.reading-preview-container{max-width:900px;margin:0 auto}.preview-header{text-align:center;margin-bottom:2.5rem}.preview-badge{display:inline-block;padding:.5rem 1rem;background:#f7f9fc;color:#665665;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;border-radius:6px;margin-bottom:1rem}.preview-header h3{font-size:1.5rem;font-weight:600;color:#1a1a1a;margin:0 0 .75rem;letter-spacing:-.02em}.preview-header p{font-size:.9375rem;color:#665665;margin:0;line-height:1.6}.reading-sample{background:white;border:1px solid #e0e0e0;border-radius:12px;overflow:visible}.reading-title{font-size:1.5rem;font-weight:600;color:#1a1a1a;text-align:center;padding:2rem 2rem .5rem;letter-spacing:-.02em}.reading-subtitle{font-size:.875rem;color:#999;text-align:center;padding:0 2rem 1.5rem;border-bottom:1px solid #f0f0f0}.reading-content-wrapper{position:relative;padding:2.5rem;background:#fafbfc;min-height:450px;overflow:visible}.reading-text-container{position:relative;max-width:580px}.reading-text{position:relative;background:white;padding:2.5rem;border-radius:12px;font-size:1rem;line-height:1.7;color:#1a1a1a;max-height:400px;overflow:hidden;box-shadow:0 2px 8px #0000000a;transform:perspective(1000px) rotateX(2deg) rotateY(2deg);transform-style:preserve-3d;transition:transform .3s ease}.reading-text:hover{transform:perspective(1000px) rotateX(0) rotateY(0)}.reading-text p{margin:0 0 1.5rem}.reading-text p:last-child{margin-bottom:0}.tooltip-word{position:relative;color:#3b82f6;font-weight:500;padding:.125rem .25rem;margin:0 .125rem;border-radius:4px;background-color:#3b82f614;transition:background-color .15s ease}.tooltip-bubble{position:absolute;bottom:100%;left:50%;transform:translate(-50%) translateY(-8px);background:#1a1a1a;color:#fff;padding:.5rem .75rem;border-radius:6px;font-size:.875rem;font-weight:500;white-space:nowrap;z-index:10;pointer-events:none;box-shadow:0 4px 12px #00000026}.tooltip-bubble:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:6px solid transparent;border-top-color:#1a1a1a}.tooltip-examples{position:absolute;top:0;right:-20px;width:360px;height:100%;pointer-events:auto}.tooltip-example-card{position:absolute;transition:all .3s ease}.tooltip-example-card.front{z-index:10}.tooltip-example-card.back{z-index:5;opacity:.75;filter:blur(.5px)}.simple-tooltip-demo{background:#1a1a1a;color:#fff;padding:.625rem 1rem;border-radius:8px;font-size:.875rem;font-weight:500;white-space:nowrap;box-shadow:0 4px 16px #00000026;letter-spacing:-.01em}.tooltip-pointer-line{width:1px;height:24px;background:linear-gradient(to bottom,#cccccc,transparent);margin:0 auto;margin-top:.5rem}.wiki-tooltip-demo{background:white;border:1px solid #e0e0e0;border-radius:12px;width:300px;box-shadow:0 16px 40px #00000026,0 4px 8px #00000014;overflow:hidden;transform:perspective(1000px) rotateX(2deg) rotateY(-3deg);transform-style:preserve-3d;transition:transform .3s ease}.wiki-tooltip-demo.partial{width:280px;transform:perspective(1000px) rotateX(3deg) rotateY(-4deg)}.wiki-tooltip-image{width:100%;height:150px;overflow:hidden;background:#f5f5f5;position:relative}.wiki-tooltip-image:after{content:"";position:absolute;bottom:0;left:0;right:0;height:40px;background:linear-gradient(to bottom,transparent,rgba(0,0,0,.05))}.wiki-tooltip-image img{width:100%;height:100%;object-fit:cover}.wiki-tooltip-content{padding:1.25rem}.wiki-tooltip-title{font-size:1.0625rem;font-weight:600;color:#1a1a1a;margin-bottom:.625rem;line-height:1.3;letter-spacing:-.015em}.wiki-tooltip-description{font-size:.875rem;line-height:1.6;color:#665665;margin-bottom:.875rem}.wiki-tooltip-link{display:flex;align-items:center;gap:.5rem;font-size:.8125rem;color:#8b5cf6;font-weight:500;letter-spacing:-.005em}.wiki-tooltip-link svg{opacity:.6}.fade-overlay{position:absolute;bottom:0;left:0;right:0;height:80px;background:linear-gradient(to bottom,transparent,white);pointer-events:none}.reading-stats{display:flex;justify-content:center;align-items:center;gap:2rem;padding:1.5rem 2rem;background:white;border-top:1px solid #f0f0f0}.stat-group{text-align:center}.stat-value{font-size:1.75rem;font-weight:300;color:#1a1a1a;line-height:1;margin-bottom:.25rem;letter-spacing:-.03em}.stat-label{font-size:.8125rem;color:#999;text-transform:uppercase;letter-spacing:.05em;font-weight:500}.stat-divider{width:1px;height:40px;background:#e0e0e0}.reading-caption{padding:1.5rem 2rem;background:white;border-top:1px solid #f0f0f0;font-size:.875rem;line-height:1.6;color:#665665}.reading-caption strong{color:#1a1a1a;font-weight:600}.preview-note{display:flex;align-items:flex-start;gap:.75rem;padding:1.25rem 2rem;background:#f7f9fc;font-size:.875rem;color:#665665;line-height:1.6}.preview-note svg{flex-shrink:0;margin-top:.125rem}.preview-note strong{font-weight:600}@media (max-width: 900px){.reading-content-wrapper{padding:1.5rem 1rem}.tooltip-examples{display:none}.reading-text-container{max-width:100%}.reading-text,.reading-text:hover{transform:none}}@media (max-width: 640px){.preview-header h3{font-size:1.25rem}.reading-title{font-size:1.25rem;padding:1.5rem 1rem .5rem}.reading-subtitle{font-size:.8125rem;padding:0 1rem 1rem}.reading-content-wrapper{padding:1.5rem 1rem}.reading-text{padding:1.5rem 1rem;font-size:1rem;max-height:350px}.reading-stats{gap:1rem;padding:1.25rem 1rem}.stat-value{font-size:1.5rem}.stat-label{font-size:.75rem}.reading-caption{padding:1.25rem 1rem;font-size:.8125rem}.preview-note{padding:1rem;font-size:.8125rem}}@media (min-width: 901px){.tooltip-example-card.back:hover .wiki-tooltip-demo{transform:perspective(1000px) rotateX(0) rotateY(0)}.tooltip-example-card.front:hover{transform:translateY(-2px) scale(1.01)}.tooltip-example-card.front:hover .wiki-tooltip-demo{transform:perspective(1000px) rotateX(0) rotateY(0)}}.exercise-preview-container{max-width:900px;margin:0 auto}.exercise-preview-header{text-align:center;margin-bottom:3rem}.exercise-preview-header .preview-badge{display:inline-block;padding:.5rem 1rem;background:#f7f9fc;color:#665665;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;border-radius:6px;margin-bottom:1rem}.exercise-preview-header h3{font-size:1.5rem;font-weight:600;color:#1a1a1a;margin:0 0 .75rem;letter-spacing:-.02em}.exercise-preview-header p{font-size:.9375rem;color:#665665;margin:0;line-height:1.6}.exercise-card-isometric{background:linear-gradient(135deg,#3b82f6 0%,#06b6d4 100%);border-radius:12px;padding:3rem;box-shadow:0 12px 32px #0000001f;transform:perspective(1000px) rotateX(2deg) rotateY(-2deg);transform-style:preserve-3d;transition:transform .3s ease;min-height:350px;display:flex;flex-direction:column;justify-content:center}.exercise-card-isometric:hover{transform:perspective(1000px) rotateX(0) rotateY(0)}.exercise-prompt{margin-bottom:2.5rem;text-align:center}.prompt-label{display:block;font-size:.875rem;font-weight:500;color:#ffffffb3;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.prompt-text{display:block;font-size:1rem;color:#ffffffe6;font-weight:400;letter-spacing:-.01em}.sentence-display{font-size:2rem;font-weight:500;color:#fff;text-align:center;line-height:1.6;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:0}.sentence-text{display:inline;white-space:pre}.blank-wrapper{display:inline-flex;flex-direction:column;align-items:center;position:relative;margin:0 .25rem}.blank-input{font-size:2rem;font-weight:500;padding:.5rem 1.5rem .75rem;background:rgba(255,255,255,.15);border:none;border-bottom:3px solid white;color:#fff;border-radius:4px 4px 0 0;min-width:120px;text-align:center;transition:all .2s ease}.blank-hint{position:absolute;bottom:-1.75rem;font-size:.75rem;color:#ffffffb3;white-space:nowrap;font-weight:400}@media (max-width: 768px){.exercise-card-isometric{transform:none;padding:2rem;min-height:300px}.exercise-card-isometric:hover{transform:none}.sentence-display{font-size:1.5rem}.blank-input{font-size:1.5rem;padding:.4rem 1rem;min-width:100px}.blank-hint{font-size:.6875rem}}@media (max-width: 640px){.exercise-preview-header{margin-bottom:2rem}.exercise-preview-header h3{font-size:1.25rem}.exercise-card-isometric{padding:1.5rem}.sentence-display{font-size:1.25rem}.blank-input{font-size:1.25rem;padding:.3rem .75rem;min-width:80px}.prompt-text{font-size:.875rem}}.landing-page{min-height:100vh;background:#ffffff;color:#1a1a1a;font-size:1rem;line-height:1.6;scroll-behavior:smooth}.landing-container{max-width:1100px;margin:0 auto;padding:0 2rem}.landing-hero{position:relative;padding:7rem 0 9rem;text-align:center;overflow:hidden}.hero-background{position:absolute;top:0;left:0;right:0;bottom:0;background-image:url(https://images.unsplash.com/photo-1456513080510-7bf3a84b82f8?w=1600&q=80);background-size:cover;background-position:center;opacity:.08;z-index:0}.hero-background:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(59,130,246,.02) 0%,rgba(255,255,255,.95) 100%);z-index:1}.landing-hero .landing-container{position:relative;z-index:2}.hero-badge{display:inline-block;padding:.5rem 1rem;background:#f7f9fc;color:#665665;font-size:.875rem;font-weight:500;border-radius:6px;margin-bottom:2rem;letter-spacing:-.01em;border:1px solid #e0e7ff;animation:fadeInDown .6s ease}.hero-title{font-size:3.25rem;font-weight:300;line-height:1.2;letter-spacing:-.04em;margin:0 0 2rem;color:#1a1a1a;animation:fadeInUp .7s ease .1s backwards}.hero-subtitle{font-size:1.25rem;line-height:1.7;color:#665665;max-width:720px;margin:0 auto 3rem;font-weight:400;animation:fadeInUp .7s ease .2s backwards}.hero-subtitle strong{color:#1a1a1a;font-weight:500}.hero-caption{margin-top:1rem;font-size:.875rem;color:#999;animation:fadeInUp .7s ease .4s backwards}.cta-primary{background:#3b82f6;color:#fff;border:none;padding:1.125rem 2.5rem;font-size:1.0625rem;font-weight:600;letter-spacing:-.01em;border-radius:12px;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px #3b82f626;animation:fadeInUp .7s ease .3s backwards;position:relative}.cta-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px #3b82f640}.cta-primary:active{transform:translateY(0)}.cta-primary.large{padding:1.25rem 2.5rem;font-size:1.125rem}.landing-section{padding:7rem 0}.landing-section.bg-subtle{background:#f8faff}.landing-section.bg-subtle-alt{background:#f0f4f8}.section-title{font-size:2.25rem;font-weight:600;line-height:1.2;letter-spacing:-.03em;text-align:center;margin:0 0 1.25rem;color:#1a1a1a;position:relative}.section-title:before{content:"";position:absolute;top:-1.75rem;left:50%;transform:translate(-50%);width:60px;height:2px;background:linear-gradient(90deg,transparent,#3b82f6,transparent);border-radius:2px}.section-title.secondary:before{background:#999999}.section-intro{font-size:1.1875rem;line-height:1.7;color:#665665;text-align:center;max-width:720px;margin:0 auto 4.5rem}.comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;max-width:900px;margin:0 auto}.comparison-card{background:white;padding:2.25rem;border-radius:12px;box-shadow:0 2px 12px #0000000a;transition:all .25s ease;border:1px solid transparent}.comparison-card:hover{box-shadow:0 8px 24px #00000014;transform:translateY(-4px)}.landing-section.bg-subtle .comparison-card{background:white;border:1px solid #e0e0e0}.comparison-card:last-child{background:#f8faff;border:1px solid #3b82f6;border-width:.5px}.comparison-card:last-child:hover{border-color:#2563eb;box-shadow:0 12px 32px #3b82f61f}.comparison-label{font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:1.5rem;padding-bottom:.75rem;border-bottom:2px solid}.comparison-label.bad{color:#999;border-color:#e0e0e0}.comparison-label.good{color:#3b82f6;border-color:#3b82f6}.comparison-list{list-style:none;padding:0;margin:0;cursor:default}.comparison-list li{padding:.875rem 0;color:#665665;line-height:1.6;font-size:.9375rem;transition:transform .2s ease}.comparison-card:hover .comparison-list li{transform:translate(2px)}.comparison-list li:before{content:"•";color:#999;font-weight:700;display:inline-block;width:1.5rem}.comparison-card:last-child .comparison-list li:before{color:#3b82f6}.method-visual{display:flex;align-items:center;justify-content:center;gap:2rem;margin:4rem 0;padding:3.5rem;background:linear-gradient(135deg,#f8faff 0%,#ffffff 100%);border-radius:16px;box-shadow:0 4px 20px #0000000f;border:1px solid #e0e7ff}.method-step{flex:1;text-align:center;transition:transform .3s ease}.method-step:hover{transform:translateY(-4px)}.method-number{width:48px;height:48px;background:linear-gradient(135deg,#3b82f6 0%,#2563eb 100%);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.25rem;font-weight:600;font-size:1.125rem;box-shadow:0 4px 12px #3b82f640;transition:transform .3s ease}.method-step:hover .method-number{transform:scale(1.1)}.method-content h3{font-size:1.125rem;font-weight:600;margin:0 0 1rem;color:#1a1a1a}.method-example{display:block;background:#f7f9fc;padding:1rem;border-radius:8px;font-size:.9375rem;color:#333;border:1px solid #e0e0e0;line-height:1.5}.method-arrow{font-size:2rem;color:#999;flex-shrink:0}.method-caption{text-align:center;color:#665665;font-size:1rem;max-width:650px;margin:0 auto;line-height:1.6}.phases-list{max-width:800px;margin:0 auto}.phase-item{display:flex;gap:1.5rem;padding:2.75rem 0;border-bottom:1px solid #f0f0f0;position:relative;transition:all .3s ease}.phase-item:hover{padding-left:1rem}.phase-item:last-child{border-bottom:none}.phase-item:nth-child(odd){border-left:3px solid #3b82f6;padding-left:1.5rem}.phase-item:nth-child(2n){border-left:3px solid #e0e7ff;padding-left:1.5rem}.phase-icon{font-size:2rem;flex-shrink:0;width:56px;height:56px;background:#f8faff;border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid #e0e7ff;transition:all .3s ease}.phase-item:hover .phase-icon{background:#3b83f67e;border-color:#3b83f67e;transform:scale(1.1)}.phase-content h3{font-size:1.25rem;font-weight:600;margin:0 0 .5rem;color:#1a1a1a;letter-spacing:-.015em}.phase-content p{margin:0;color:#665665;line-height:1.6;font-size:.9375rem}.stats-row{display:flex;justify-content:center;gap:5rem;margin:4rem 0;padding:3.5rem 0;background:linear-gradient(135deg,#f0f4f8 0%,#fafbfc 100%);border-radius:16px;border:1px solid #e0e0e0}.stat-item{text-align:center;transition:transform .3s ease}.stat-item:hover{transform:translateY(-8px)}.stat-number{font-size:3rem;font-weight:300;line-height:1;color:#3b82f6;letter-spacing:-.04em;margin-bottom:.75rem}.stat-label{font-size:1rem;color:#665665;font-weight:500;margin-bottom:.25rem}.stat-caption{font-size:.875rem;color:#999}.utility-examples{max-width:900px;margin:3rem auto 0;padding-top:3rem;border-top:1px solid #f0f0f0}.utility-examples h3{font-size:1.375rem;font-weight:600;text-align:center;margin:0 0 2.5rem;color:#1a1a1a;letter-spacing:-.02em}.utility-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.utility-card{background:white;padding:1.75rem;border-radius:12px;text-align:center;border:1px solid #e0e0e0;transition:all .25s ease;cursor:default}.utility-card:hover{border-color:#3b82f6;box-shadow:0 8px 20px #3b82f61a;transform:translateY(-4px)}.utility-module{font-size:.75rem;font-weight:600;text-transform:uppercase;color:#999;letter-spacing:.05em;margin-bottom:.75rem}.utility-phrase{font-size:1.5rem;font-weight:500;color:#1a1a1a;margin-bottom:.5rem}.utility-desc{font-size:.875rem;color:#665665}.preview-box{max-width:900px;margin:0 auto;background:#f7f9fc;padding:2rem;border-radius:12px;border:1px solid #e0e0e0}.preview-image{width:100%;height:auto;border-radius:8px;margin-bottom:1rem}.preview-caption{text-align:center;color:#665665;font-size:.9375rem;margin:0;line-height:1.6}.audience-layout{max-width:1000px;margin:0 auto}.audience-image-container{margin-bottom:3rem;display:flex;justify-content:center}.audience-image{width:100%;max-width:700px;height:320px;object-fit:cover;border-radius:16px;opacity:.92;transition:all .4s ease;box-shadow:0 8px 24px #00000014}.audience-image:hover{opacity:1;transform:scale(1.02);box-shadow:0 12px 32px #0000001f}.audience-content{display:grid;grid-template-columns:1fr 1fr;gap:3rem}.audience-col h3{font-size:1.25rem;font-weight:600;margin:0 0 1.5rem;color:#1a1a1a;letter-spacing:-.015em}.audience-list{list-style:none;padding:0;margin:0;cursor:default}.audience-list li{padding:.875rem 0;color:#665665;line-height:1.6;font-size:.9375rem;transition:all .2s ease}.audience-list li:hover{padding-left:.5rem;color:#1a1a1a}.audience-list li:before{content:"✓";color:#3b82f6;font-weight:700;display:inline-block;width:1.5rem}.audience-list.muted li{color:#999}.audience-list.muted li:before{content:"×";color:#ccc}.landing-cta-section{padding:7rem 0;text-align:center;background:linear-gradient(180deg,#f0f4f8 0%,#fafbfc 100%);border-top:1px solid #e0e0e0}.cta-title{font-size:2.75rem;font-weight:600;line-height:1.2;letter-spacing:-.03em;margin:0 0 1.25rem;color:#1a1a1a}.cta-subtitle{font-size:1.1875rem;line-height:1.7;color:#665665;max-width:640px;margin:0 auto 3rem}.cta-note{margin-top:1rem;font-size:.875rem;color:#999}.landing-footer{padding:4rem 0;text-align:center;border-top:1px solid #e0e0e0;background:#fafbfc}.landing-footer p{margin:0;color:#999;font-size:.875rem;letter-spacing:.02em}@media (max-width: 900px){.comparison-grid{grid-template-columns:1fr;gap:1.5rem}.method-visual{flex-direction:column;gap:1rem}.method-arrow{transform:rotate(90deg)}.stats-row{flex-direction:column;gap:2rem}.utility-grid{grid-template-columns:1fr;gap:1rem}.audience-image{height:240px}.audience-content{grid-template-columns:1fr;gap:2rem}}@media (max-width: 768px){.landing-container{padding:0 1.5rem}.landing-hero{padding:3rem 0 3.5rem}.hero-badge{font-size:.8125rem;padding:.375rem .875rem;margin-bottom:1.25rem}.hero-title{font-size:2.25rem;margin-bottom:1.25rem}.hero-subtitle{font-size:1.0625rem;margin-bottom:2rem}.hero-caption{font-size:.8125rem}.section-title{font-size:1.625rem;margin-bottom:.875rem}.section-intro{font-size:1.0625rem;margin-bottom:2.5rem}.landing-section{padding:5rem 0}.comparison-card{padding:1.5rem}.phase-item{gap:1.25rem;padding:1.75rem 0}.phase-icon{font-size:1.75rem}.phase-content h3{font-size:1.125rem}.phase-content p{font-size:.9375rem}.method-visual{padding:1.75rem;gap:1.25rem}.stats-row{gap:3rem;padding:2rem 0}.stat-number{font-size:2.5rem}.preview-box{padding:1.5rem}.audience-image{height:240px}.landing-cta-section{padding:4rem 0}.cta-title{font-size:2rem}.cta-subtitle{font-size:1.0625rem}}@media (max-width: 640px){.landing-container{padding:0 1rem}.landing-hero{padding:2.5rem 0 3rem}.hero-badge{font-size:.75rem;padding:.3125rem .75rem;margin-bottom:1rem}.hero-title{font-size:1.875rem;margin-bottom:1rem}.hero-subtitle{font-size:1rem;margin-bottom:1.75rem}.hero-caption{font-size:.75rem;margin-top:.875rem}.cta-primary{padding:.875rem 1.75rem;font-size:.9375rem}.section-title{font-size:1.5rem;margin-bottom:.75rem}.section-intro{font-size:1rem;margin-bottom:2rem}.landing-section,.landing-section.bg-subtle{padding:4rem 0}.comparison-card{padding:1.25rem;border-radius:8px}.comparison-label{font-size:.8125rem;margin-bottom:1.25rem;padding-bottom:.625rem}.comparison-list li{padding:.625rem 0;font-size:.875rem}.phase-item{gap:1rem;padding:1.5rem 0}.phase-icon{font-size:1.5rem}.phase-content h3{font-size:1.0625rem;margin-bottom:.375rem}.phase-content p{font-size:.875rem}.method-visual{padding:1.25rem;margin:2rem 0}.method-number{width:36px;height:36px;font-size:1rem;margin-bottom:.875rem}.method-content h3{font-size:1rem;margin-bottom:.875rem}.method-example{padding:.875rem;font-size:.875rem}.method-caption{font-size:.9375rem}.stats-row{gap:2rem;margin:2rem 0;padding:1.75rem 0}.stat-number{font-size:2rem;margin-bottom:.5rem}.stat-label{font-size:.9375rem}.stat-caption{font-size:.8125rem}.utility-examples{margin:2rem auto 0;padding-top:2rem}.utility-examples h3{font-size:1.125rem;margin-bottom:1.5rem}.utility-card{padding:1.25rem}.utility-phrase{font-size:1.25rem}.utility-desc{font-size:.8125rem}.preview-box{padding:1.25rem;border-radius:8px}.preview-caption{font-size:.875rem}.audience-image{height:180px;border-radius:8px}.audience-image-container{margin-bottom:1.75rem}.audience-col h3{font-size:1rem;margin-bottom:1.25rem}.audience-list li{padding:.625rem 0;font-size:.875rem}.landing-cta-section{padding:3rem 0}.cta-title{font-size:1.625rem;margin-bottom:.875rem}.cta-subtitle{font-size:1rem;margin-bottom:2rem}.cta-note{margin-top:.875rem;font-size:.8125rem}.cta-primary.large{padding:.875rem 1.75rem;font-size:.9375rem}.landing-footer{padding:2.5rem 0}.landing-footer p{font-size:.8125rem}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.welcome-page{min-height:100vh;background:#ffffff;color:#1a1a1a;font-size:1rem;line-height:1.6}.welcome-container{max-width:900px;margin:0 auto;padding:0 2.5rem}.welcome-hero{padding:5rem 0 4rem;text-align:center;background:linear-gradient(180deg,#f8faff 0%,#ffffff 100%);border-bottom:1px solid #f0f0f0}.welcome-title{font-size:3rem;font-weight:300;line-height:1.2;letter-spacing:-.04em;margin:0 0 1.25rem;color:#1a1a1a;animation:fadeInUp .7s ease .1s backwards}.welcome-subtitle{font-size:1.25rem;line-height:1.6;color:#665665;max-width:700px;margin:0 auto;font-weight:400;animation:fadeInUp .7s ease .2s backwards}.welcome-art-section{padding:4rem 0 5rem;background:#fafbfc;border-bottom:1px solid #f0f0f0}.art-container{max-width:800px;margin:0 auto;animation:fadeIn .8s ease .3s backwards}.art-image{width:100%;height:auto;border-radius:12px;box-shadow:0 8px 24px #0000001f;transition:all .3s ease;display:block}.art-image:hover{box-shadow:0 12px 32px #00000029;transform:translateY(-2px)}.art-caption{margin-top:1.25rem;font-size:.9375rem;line-height:1.7;color:#665665;text-align:center}.art-link{color:#3b82f6;text-decoration:none;font-weight:500;transition:color .15s ease}.art-link:hover{color:#2563eb;text-decoration:underline}.art-link em{font-style:italic}.welcome-section{padding:5rem 0}.welcome-section.bg-subtle{background:#fafbfc}.welcome-section-title{font-size:2rem;font-weight:600;line-height:1.2;letter-spacing:-.03em;margin:0 0 3rem;color:#1a1a1a;text-align:center;animation:fadeInUp .6s ease backwards}.welcome-intro{font-size:1.125rem;line-height:1.7;color:#665665;text-align:center;max-width:680px;margin:0 auto 3rem}.welcome-facts{max-width:800px;margin:0 auto}.welcome-fact-item{padding:2rem 0;border-bottom:1px solid #f0f0f0;animation:fadeInUp .6s ease backwards}.welcome-fact-item:first-child{padding-top:0;animation-delay:.1s}.welcome-fact-item:nth-child(2){animation-delay:.2s}.welcome-fact-item:nth-child(3){animation-delay:.3s}.welcome-fact-item:nth-child(4){animation-delay:.4s}.welcome-fact-item:last-child{border-bottom:none;padding-bottom:0}.fact-label{font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:#3b82f6;margin-bottom:.75rem}.fact-content{font-size:1rem;line-height:1.7;color:#1a1a1a}.fact-content strong{font-weight:600;color:#1a1a1a}.welcome-fact-item.with-image{padding:2rem 0}.fact-content-with-image{display:flex;gap:2rem;align-items:flex-start}.fact-image{flex-shrink:0;width:280px}.image-link{display:block;border-radius:8px;overflow:hidden;transition:all .2s ease}.image-link:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.roman-temple-image,.academie-image{width:100%;height:auto;display:block;border:1px solid #e0e0e0;border-radius:8px}.image-caption{margin-top:.75rem;font-size:.875rem;line-height:1.5;color:#665665;text-align:center}.image-caption-link{color:#3b82f6;text-decoration:none;font-weight:500;transition:color .15s ease}.image-caption-link:hover{color:#2563eb;text-decoration:underline}.welcome-fact-item.with-map{padding:2rem 0}.fact-content-with-map{display:flex;gap:2rem;align-items:flex-start}.fact-text{flex:1;font-size:1rem;line-height:1.7;color:#1a1a1a}.fact-text strong{font-weight:600;color:#1a1a1a}.fact-text .inline-link{color:#3b82f6;text-decoration:none;font-weight:500;transition:color .15s ease}.fact-text .inline-link:hover{color:#2563eb;text-decoration:underline}.fact-text .inline-link em{font-style:italic}.fact-map{flex-shrink:0;width:280px}.map-link{display:block;border-radius:8px;overflow:hidden;transition:all .2s ease}.map-link:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.map-image{width:100%;height:auto;display:block;border:1px solid #e0e0e0;border-radius:8px}.map-caption{margin-top:.75rem;font-size:.875rem;line-height:1.5;color:#665665;text-align:center}.map-caption-link{color:#3b82f6;text-decoration:none;font-weight:500;transition:color .15s ease}.map-caption-link:hover{color:#2563eb;text-decoration:underline}.welcome-linguistic-features{max-width:800px;margin:0 auto}.linguistic-feature{margin-bottom:3rem;animation:fadeInUp .6s ease backwards}.linguistic-feature:first-child{animation-delay:.1s}.linguistic-feature:nth-child(2){animation-delay:.2s}.linguistic-feature:last-child{margin-bottom:0}.linguistic-feature h3{font-size:1.25rem;font-weight:600;margin:0 0 1rem;color:#1a1a1a;letter-spacing:-.015em}.linguistic-feature p{margin:0 0 1.5rem;color:#665665;line-height:1.7;font-size:1rem}.linguistic-feature p:last-child{margin-bottom:0}.linguistic-feature em{font-style:italic;color:#1a1a1a}.linguistic-feature strong{font-weight:600;color:#1a1a1a}.linguistic-feature .spacing-below{margin-bottom:2.5rem}.language-comparison{background:#ffffff;border:1px solid #e0e0e0;border-radius:8px;padding:1.5rem;margin:1.5rem 0}.comparison-example{padding:1rem 0}.comparison-example:first-child{padding-top:0;padding-bottom:1.25rem;border-bottom:1px solid #f0f0f0}.comparison-example:last-child{padding-bottom:0;padding-top:1.25rem}.lang-label{font-size:.875rem;font-weight:600;color:#999;margin-bottom:.5rem}.pronunciation{font-size:1.0625rem;line-height:1.6;color:#1a1a1a;font-weight:500}.pronunciation .subtle{display:block;font-size:.875rem;color:#999;font-weight:400;margin-top:.375rem}.phrase-with-audio{display:inline-flex;align-items:center;gap:.5rem}.inline-phrase-audio{display:inline-flex;align-items:center;gap:0;vertical-align:baseline}.inline-phrase-audio button{margin-left:.2rem;vertical-align:baseline}.feature-note{background:#f7f9fc;padding:1.25rem;border-radius:8px;border-left:3px solid #3b82f6;font-size:.9375rem;color:#665665;line-height:1.6;margin-top:1.5rem}.feature-note.secondary{background:#fafbfc;border-left-color:#999;color:#665665}.feature-note-with-image{display:flex;align-items:flex-start;gap:1.5rem;margin-top:1.5rem}.feature-note-image{flex-shrink:0;width:280px}.robot-clock-image{width:100%;height:auto;border-radius:8px;box-shadow:0 2px 8px #00000014;aspect-ratio:3 / 2;object-fit:cover;display:block}.feature-note-with-image .feature-note{margin-top:0;flex:1}.pedagogy-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:3rem}.pedagogy-card{background:#fafbfc;padding:2rem;border-radius:8px;border:1px solid #f0f0f0;transition:all .2s ease;animation:fadeInUp .5s ease backwards}.pedagogy-card:nth-child(1){animation-delay:.1s}.pedagogy-card:nth-child(2){animation-delay:.2s}.pedagogy-card:nth-child(3){animation-delay:.3s}.pedagogy-card:nth-child(4){animation-delay:.4s}.pedagogy-card:nth-child(5){animation-delay:.5s}.pedagogy-card:nth-child(6){animation-delay:.6s}.pedagogy-card:hover{border-color:#3b82f6;box-shadow:0 4px 12px #3b82f614}.pedagogy-number{width:36px;height:36px;background:#3b82f6;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1rem;margin-bottom:1rem}.pedagogy-card h3{font-size:1.125rem;font-weight:600;margin:0 0 .75rem;color:#1a1a1a;letter-spacing:-.015em}.pedagogy-card p{margin:0;color:#665665;line-height:1.7;font-size:.9375rem}.pedagogy-example{margin-top:1rem;padding:.875rem;background:#ffffff;border:1px solid #e0e0e0;border-radius:6px;font-size:.9375rem;color:#1a1a1a;font-family:SF Mono,Monaco,Courier New,monospace;text-align:center}.research-note{background:#f7f9fc;padding:2rem;border-radius:12px;border:1px solid #e0e7ff;max-width:800px;margin:0 auto}.research-note p{margin:0;color:#665665;line-height:1.7;font-size:.9375rem}.research-note strong{color:#1a1a1a;font-weight:600}.research-note .research-link{color:#3b82f6;text-decoration:none;font-weight:500;transition:color .15s ease}.research-note .research-link:hover{color:#2563eb;text-decoration:underline}.expectations{max-width:800px;margin:0 auto}.expectation-item{display:flex;gap:1.5rem;padding:2rem 0;border-bottom:1px solid #f0f0f0;animation:fadeInUp .6s ease backwards}.expectation-item:first-child{padding-top:0;animation-delay:.1s}.expectation-item:nth-child(2){animation-delay:.2s}.expectation-item:nth-child(3){animation-delay:.3s}.expectation-item:nth-child(4){animation-delay:.4s}.expectation-item:last-child{border-bottom:none;padding-bottom:0}.expectation-icon{font-size:2rem;flex-shrink:0;width:56px;height:56px;background:#ffffff;border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid #f0f0f0}.expectation-content h3{font-size:1.125rem;font-weight:600;margin:0 0 .5rem;color:#1a1a1a;letter-spacing:-.015em}.expectation-content p{margin:0;color:#665665;line-height:1.7;font-size:.9375rem}.welcome-cta-section{padding:5rem 0;text-align:center;background:#fafbfc;border-top:1px solid #f0f0f0}.welcome-cta-title{font-size:2.25rem;font-weight:600;line-height:1.2;letter-spacing:-.03em;margin:0 0 1rem;color:#1a1a1a}.welcome-cta-subtitle{font-size:1.125rem;line-height:1.7;color:#665665;max-width:560px;margin:0 auto 2.5rem}.welcome-cta-button{background:#3b82f6;color:#fff;border:none;padding:1.125rem 2.5rem;font-size:1.0625rem;font-weight:600;letter-spacing:-.01em;border-radius:10px;cursor:pointer;transition:all .15s ease;box-shadow:0 4px 12px #3b82f633;animation:fadeInUp .7s ease .3s backwards}.welcome-cta-button:hover{background:#2563eb;box-shadow:0 6px 16px #3b82f64d;transform:translateY(-1px)}.welcome-cta-button:active{transform:translateY(0)}@media (max-width: 768px){.welcome-container{padding:0 1rem}.welcome-hero{padding:2.5rem 0 2rem}.welcome-art-section{padding:2rem 0 2.5rem}.art-caption{font-size:.8125rem;margin-top:.75rem}.welcome-title{font-size:2rem;margin-bottom:.75rem}.welcome-subtitle{font-size:1rem}.welcome-section{padding:2.5rem 0}.welcome-section-title{font-size:1.5rem;margin-bottom:1.5rem}.welcome-intro{font-size:1rem;margin-bottom:1.5rem}.welcome-fact-item{padding:1rem 0}.fact-content,.linguistic-feature h3,.linguistic-feature p{font-size:1rem}.pedagogy-grid{grid-template-columns:1fr;gap:1rem}.pedagogy-card{padding:1rem}.fact-content-with-image{flex-direction:column;gap:1rem}.fact-image{width:100%;max-width:100%;margin:0}.fact-content-with-map{flex-direction:column;gap:1rem}.fact-map{width:100%;max-width:100%;margin:0}.expectation-item{gap:1rem;padding:1rem 0}.expectation-icon{font-size:1.5rem;width:40px;height:40px}.expectation-content h3,.expectation-content p{font-size:1rem}.welcome-cta-section{padding:2.5rem 0}.welcome-cta-title{font-size:1.625rem}.welcome-cta-subtitle{font-size:1rem;margin-bottom:1.5rem}.feature-note-with-image{flex-direction:column;gap:1rem}.feature-note-image{width:100%;max-width:250px;margin:0 auto}}@media (max-width: 640px){.welcome-container{padding:0 .75rem}.welcome-hero{padding:2rem 0 1.5rem}.welcome-art-section{padding:1.5rem 0 2rem}.art-image{border-radius:6px}.art-caption{margin-top:.75rem;font-size:.75rem}.welcome-title{font-size:1.75rem;margin-bottom:.5rem}.welcome-subtitle{font-size:1rem}.welcome-section{padding:2rem 0}.welcome-section-title{font-size:1.375rem;margin-bottom:1.25rem}.welcome-intro{font-size:.9375rem;margin-bottom:1.25rem}.welcome-fact-item{padding:.75rem 0}.fact-label{font-size:.75rem}.fact-content{font-size:1rem}.linguistic-feature{margin-bottom:1.5rem}.linguistic-feature h3{font-size:.9375rem}.linguistic-feature p{font-size:1rem}.language-comparison{padding:1rem}.pronunciation{font-size:1rem}.feature-note{padding:.75rem;font-size:.8125rem}.pedagogy-grid{gap:1rem;margin-bottom:1.5rem}.pedagogy-card{padding:1rem}.pedagogy-number{width:28px;height:28px;font-size:.875rem;margin-bottom:.75rem}.pedagogy-card h3{font-size:1rem;margin-bottom:.5rem}.pedagogy-card p{font-size:1rem}.pedagogy-example{padding:.625rem;font-size:1rem}.research-note{padding:1rem}.research-note p{font-size:.8125rem}.fact-image,.fact-map{max-width:100%}.expectation-item{gap:1rem;padding:.75rem 0}.expectation-icon{font-size:1.25rem;width:32px;height:32px}.expectation-content h3{font-size:.9375rem;margin-bottom:.25rem}.expectation-content p{font-size:1rem}.welcome-cta-section{padding:2rem 0}.welcome-cta-title{font-size:1.5rem}.welcome-cta-subtitle{font-size:1rem;margin-bottom:1.25rem}.welcome-cta-button{padding:.875rem 1.5rem;font-size:1rem}}.dashboard-header{background:white;padding:2rem;margin-bottom:2.5rem;border-radius:16px;border:1px solid #f0f0f0}.dashboard-loading{font-size:.9375rem;color:#999;text-align:center;padding:2rem 0}.dashboard-layout{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start}.dashboard-left{display:flex;flex-direction:column}.next-lesson-card{position:relative;color:#fff!important;border:none;border-radius:16px;padding:2rem;cursor:pointer;transition:all .15s ease;text-align:left;width:100%;display:flex;flex-direction:column;gap:.75rem;overflow:hidden;background-image:url(https://images.unsplash.com/photo-1502602898657-3e91760cbb34?w=1200&q=80),url(/img/eiffel-tower-paris.jpg);background-size:cover;background-position:center}.next-lesson-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(0,0,0,.5) 0%,rgba(0,0,0,.35) 100%);border-radius:16px;z-index:0}.next-lesson-card>*{position:relative;z-index:1}.next-lesson-card *{color:inherit}.next-lesson-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #3b82f64d}.next-lesson-card:active{transform:translateY(0)}.next-lesson-card .lesson-badge{display:inline-block;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;background:rgba(255,255,255,.2);padding:.375rem .75rem;border-radius:6px;width:fit-content}.next-lesson-card .lesson-title{font-size:1.5rem;font-weight:600;letter-spacing:-.02em;line-height:1.3;margin-top:.25rem}.next-lesson-card .lesson-unit{display:flex;align-items:center;gap:.5rem;font-size:.9375rem;font-weight:500;margin-top:.25rem}.next-lesson-card .unit-icon{font-size:1.125rem;line-height:1}.next-lesson-card .unit-name{letter-spacing:-.01em}.next-lesson-card .lesson-description{font-size:.9375rem;line-height:1.5;margin-top:.25rem;color:#fff!important}.next-lesson-card .lesson-progress-info{margin-top:.5rem;display:flex;flex-direction:column;gap:.5rem}.next-lesson-card .lesson-progress-bar{width:100%;height:6px;background:rgba(255,255,255,.2);border-radius:3px;overflow:hidden}.next-lesson-card .lesson-progress-fill{height:100%;background:white;border-radius:3px;transition:width .3s ease}.next-lesson-card .lesson-progress-text{font-size:.8125rem;font-weight:500;letter-spacing:-.01em}.dashboard-complete-card{background:linear-gradient(135deg,#fafbfc 0%,#f7f9fc 100%);border:1px solid #f0f0f0;border-radius:16px;padding:3rem 2rem;display:flex;flex-direction:column;align-items:center;gap:.75rem;text-align:center}.complete-icon{font-size:3rem;line-height:1}.complete-text{font-size:1.25rem;font-weight:600;color:#1a1a1a;letter-spacing:-.015em}.dashboard-right{display:flex;flex-direction:column;gap:1.5rem}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.stat-box{background:#fafbfc;border-radius:12px;padding:1.25rem;display:flex;align-items:center;gap:1rem;transition:all .15s ease;border:1px solid transparent}.stat-box:hover{background:#f7f9fc;border-color:#f0f0f0}.stat-box.stat-streak{background:#fafbfc}.stat-box.stat-streak.active{background:#fff7ed;border-color:#fed7aa}.stat-icon-wrapper{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:white;border-radius:10px;color:#3b82f6;flex-shrink:0;box-shadow:0 1px 3px #0000000d}.stat-icon-flame{color:#999;transition:color .15s ease}.stat-streak.active .stat-icon-flame{color:#f97316}.stat-info{display:flex;flex-direction:column;gap:.125rem;min-width:0}.stat-value{font-size:1.5rem;font-weight:600;color:#1a1a1a;line-height:1.2;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.stat-value-small{font-size:.9375rem;font-weight:600;color:#1a1a1a;letter-spacing:-.01em}.stat-label{font-size:.8125rem;font-weight:500;color:#665665;letter-spacing:-.01em}.stat-box.stat-progress{display:flex;align-items:center;gap:1rem;padding:1.25rem;position:relative}.stat-box.stat-progress .stat-icon-wrapper{display:none}.stat-box.stat-progress .stat-info{flex:1;min-width:0}.progress-circle-container{position:relative;width:60px;height:60px;flex-shrink:0;order:-1}.progress-circle{display:block;transition:stroke-dashoffset .5s ease}.progress-circle-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:.9375rem;font-weight:600;color:#1a1a1a;letter-spacing:-.01em}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.dashboard-header{animation:fadeSlideUp .25s ease}@media (max-width: 1024px){.dashboard-layout{grid-template-columns:1fr;gap:1.5rem}.stats-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.dashboard-header{padding:1rem .5rem;margin-bottom:1.5rem}.dashboard-layout{gap:1rem}.next-lesson-card{padding:1.25rem 1rem}.next-lesson-card .lesson-title{font-size:1.25rem}.stats-grid{gap:.625rem}.stat-box{padding:.75rem}.stat-value{font-size:1.25rem}.reference-link{width:100%;justify-content:center}}@media (max-width: 480px){.dashboard-header{padding:.75rem .25rem;margin-bottom:1rem}.next-lesson-card{padding:1rem .75rem;gap:.5rem}.next-lesson-card .lesson-title{font-size:1.125rem}.next-lesson-card .lesson-badge{font-size:.6875rem;padding:.25rem .5rem}.next-lesson-card .lesson-description{font-size:.875rem}.stats-grid{grid-template-columns:1fr;gap:.5rem}.dashboard-right{gap:1rem}.stat-box{padding:.75rem;gap:.625rem}.stat-box.stat-progress{padding:.75rem}.stat-box.stat-progress .stat-icon-wrapper{display:flex}.stat-box.stat-progress .progress-circle-container{order:0}.stat-icon-wrapper{width:32px;height:32px}.stat-icon-wrapper svg{width:16px;height:16px}.stat-value{font-size:1.125rem}.stat-label{font-size:.75rem}.progress-circle-container,.progress-circle{width:44px;height:44px}.progress-circle-text{font-size:.75rem}.reference-link{width:100%;justify-content:center;padding:.875rem 1rem;font-size:.875rem}}.next-lesson-card:focus-visible,.stat-box:focus-visible{outline:2px solid #3b82f6;outline-offset:2px}.reference-link{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.25rem;background:#f3f3f3;color:#1a1a1a;border:1px solid #e0e0e0;border-radius:10px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .15s ease;letter-spacing:-.01em;width:100%}.reference-link:hover{background:#e0e0e0;border-color:#d0d0d0;transform:translateY(-1px)}.reference-link svg{color:#3b82f6}.reference-link:active{transform:translateY(0)}.reference-link svg{flex-shrink:0}.reference-link:focus-visible{outline:2px solid #3b82f6;outline-offset:2px}.french-character-picker{margin-top:.5rem;padding:.75rem;background:transparent;border-radius:6px;border:none}.character-picker-label{font-size:.875rem;color:#ffffffe6;margin-bottom:.5rem;font-weight:500}.character-buttons{display:flex;flex-wrap:wrap;gap:.5rem}.character-btn{min-width:2.5rem;height:2.5rem;padding:.5rem;background:transparent;border:2px solid rgba(255,255,255,.5);border-radius:6px;font-size:1.125rem;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;cursor:pointer;transition:all .2s ease;color:#fff;font-weight:400}.character-btn:hover{background:rgba(255,255,255,.15);border-color:#fff;transform:translateY(-1px);box-shadow:0 2px 8px #0003}.character-btn:active{transform:translateY(0);background:rgba(255,255,255,.25);box-shadow:0 1px 4px #0003}.character-btn:focus{outline:2px solid white;outline-offset:2px}@media (max-width: 768px){.character-btn{min-width:2rem;height:2rem;font-size:1rem}.character-buttons{gap:.375rem}.french-character-picker{padding:.5rem}}.right-sidebar{display:flex;flex-direction:column;height:100%}.sidebar-tabs{display:flex;gap:.5rem;padding:.75rem;background:#f8fafc;border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:10;flex-shrink:0}.tab-button{flex:1;padding:.625rem 1rem;background:transparent;border:none;border-radius:6px;cursor:pointer;font-size:.875rem;color:#64748b;transition:all .2s;font-weight:500}.tab-button:hover:not(.active){background:#e2e8f0;color:#1e293b}.tab-button.active{background:#ffffff;color:#3b82f6;box-shadow:0 1px 3px #00000014,0 1px 2px #0000000a}.tab-button:focus{outline:none;box-shadow:inset 0 0 0 2px #3b82f6;border-radius:6px}.tab-content{flex:1;overflow-y:auto;padding-right:.5rem;padding-left:1rem}.tab-content .concept-pane,.tab-content .vocabulary-reference{margin:0;padding:0}.tab-content>*:first-child{margin-top:0;padding-top:0}@media (max-width: 1024px){.sidebar-tabs{margin-bottom:1rem}.tab-button{padding:.75rem 1rem;font-size:.875rem}}@media (max-width: 768px){.right-sidebar{display:flex;flex-direction:column;height:auto}.sidebar-tabs{padding:.5rem .75rem;gap:.375rem;background:#f8fafc;border-bottom:1px solid #e2e8f0;border-radius:8px 8px 0 0}.tab-button{padding:.5rem .75rem;font-size:1rem}.tab-content{padding-left:.75rem;padding-right:.25rem}}.tab-content::-webkit-scrollbar{width:6px}.tab-content::-webkit-scrollbar-track{background:transparent}.tab-content::-webkit-scrollbar-thumb{background:#dddddd;border-radius:3px}.tab-content::-webkit-scrollbar-thumb:hover{background:#bbbbbb}.fill-in-blank-container{min-height:80vh;max-height:90vh;display:flex;flex-direction:column;background:linear-gradient(135deg,#3b82f6 0%,#06b6d4 100%);padding:2rem;position:relative;border-radius:.8rem}.question-content{flex:1;display:flex;flex-direction:column;justify-content:center;max-width:100%;width:100%;margin:0;padding:0 1rem}.top-part{display:flex;align-items:center;gap:.5rem;margin-bottom:3rem}.nav-arrow-left{flex-shrink:0;display:flex;justify-content:flex-start}.nav-arrow-right{flex-shrink:0;display:flex;justify-content:flex-end}.sentence-area{flex:1;min-width:0}.nav-btn{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.2);border:2px solid rgba(255,255,255,.5);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease;font-size:2rem;font-weight:300}.nav-btn:hover{background:rgba(255,255,255,.3);border-color:#fff;transform:scale(1.1);box-shadow:0 4px 12px #0003}.nav-btn:active{transform:scale(1.05)}.bottom-part{display:flex;justify-content:center}.fill-in-blank-header{position:absolute;top:2rem;right:2rem;display:flex;flex-direction:column;align-items:flex-end;gap:.5rem;min-width:200px}.progress-indicator{display:flex;align-items:baseline;gap:.5rem;font-size:1rem;color:#ffffffb3;font-weight:500}.fill-in-progress-bar{width:100%;height:6px;background:rgba(255,255,255,.2);border-radius:3px;overflow:hidden;margin-top:.5rem}.fill-in-progress-fill{height:100%;background:linear-gradient(90deg,#10b981 0%,#059669 100%);transition:width .5s ease;border-radius:3px}.fill-in-progress-text{font-size:.85rem;color:#fffc;text-align:right;font-weight:500;margin-top:.25rem}.current-number{font-size:2rem;font-weight:700;color:#fff}.progress-separator{font-size:1.5rem;color:#ffffff80}.total-number{font-size:1.2rem;color:#ffffffb3}.sentence-display{font-size:2.5rem;font-weight:500;color:#fff;text-align:center;line-height:1.6;margin-bottom:2rem;min-height:150px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:.5rem}.sentence-text{display:inline}.blank-wrapper{display:inline-block;position:relative;margin:0 .25rem;vertical-align:baseline;background:none;border:none}.blank-input{font-size:2.5rem;font-weight:500;padding:.5rem 1.5rem .75rem;margin:0;border:none;border-top:none;border-left:none;border-right:none;border-bottom:3px solid rgba(255,255,255,.6);background:transparent;background-image:none;color:#fff;text-align:center;outline:none;outline-offset:0;transition:all .3s ease;font-family:inherit;vertical-align:baseline;box-shadow:none!important;text-shadow:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.blank-input::placeholder{color:#ffffff4d}.blank-input:focus{border-bottom-color:#fff;border-bottom-width:3px;background:rgba(255,255,255,.1);border-radius:8px 8px 0 0;box-shadow:none}.blank-input.correct{border-bottom-color:#10b981!important;border-bottom-width:6px!important;background:rgba(16,185,129,.25)!important;animation:correctPulse .5s ease}.blank-input.incorrect{border-bottom-color:#ef4444!important;border-bottom-width:6px!important;background:rgba(239,68,68,.25)!important;animation:incorrectShake .5s ease}@keyframes correctPulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes incorrectShake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.blank-hint{position:absolute;top:calc(100% + .25rem);left:50%;transform:translate(-50%);font-size:.9rem;color:#ffffffb3;font-weight:400;white-space:nowrap;pointer-events:none}.blank-feedback{position:absolute;top:calc(100% + 2.5rem);left:50%;transform:translate(-50%);padding:.5rem 1rem;border-radius:8px;font-size:1rem;font-weight:500;white-space:nowrap;z-index:10;animation:fadeIn .3s ease;box-shadow:0 4px 12px #0003}.blank-feedback.correct{background:#10b981;color:#fff}.blank-feedback.incorrect{background:#ef4444;color:#fff}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.sentence-instruction{font-size:1.2rem;color:#fffc;text-align:center;font-weight:400}.french-character-picker-wrapper{margin-top:2rem}.fill-in-blank-actions{display:flex;gap:1rem;justify-content:center;margin-top:2rem}.btn-check-answer,.btn-skip-sentence{padding:1rem 2rem;font-size:1.1rem;font-weight:600;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease}.btn-check-answer{background:white;color:#3b82f6}.btn-check-answer:hover:not(:disabled){background:#f0f0f0;transform:translateY(-2px);box-shadow:0 4px 12px #0003}.btn-check-answer:disabled{opacity:.5;cursor:not-allowed}.btn-skip-sentence{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}.btn-skip-sentence:hover{background:rgba(255,255,255,.1);border-color:#fff}.fill-in-blank-hint{text-align:center;font-size:.95rem;color:#fff9;margin-top:1.5rem}.fill-in-blank-results{min-height:80vh;max-height:90vh;display:flex;flex-direction:column;justify-content:center;align-items:center;background:linear-gradient(135deg,#3b82f6 0%,#06b6d4 100%);padding:2rem}.results-content{max-width:600px;width:100%;text-align:center}.results-score{background:white;border-radius:24px;padding:3rem 2rem;box-shadow:0 20px 60px #0000004d;margin-bottom:2rem}.score-circle{width:150px;height:150px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:3rem;font-weight:700;margin:0 auto 2rem;border:8px solid}.score-circle.pass{background:linear-gradient(135deg,#10b981 0%,#059669 100%);border-color:#065f46;color:#fff}.score-circle.fail{background:linear-gradient(135deg,#ef4444 0%,#dc2626 100%);border-color:#991b1b;color:#fff}.results-score h2{font-size:2rem;margin-bottom:1rem;color:#1f2937}.results-score p{font-size:1.2rem;color:#6b7280;margin-bottom:.5rem}.pass-message{color:#059669;font-weight:600}.fail-message{color:#dc2626;font-weight:600}.results-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn-retry,.btn-continue,.btn-back{padding:1rem 2.5rem;font-size:1.2rem;font-weight:600;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease}.btn-retry{background:#f59e0b;color:#fff}.btn-retry:hover{background:#d97706;transform:translateY(-2px);box-shadow:0 4px 12px #f59e0b66}.btn-continue{background:white;color:#3b82f6}.btn-continue:hover{background:#f0f0f0;transform:translateY(-2px);box-shadow:0 4px 12px #fff6}.btn-back{background:transparent;color:#fff;border:2px solid white}.btn-back:hover{background:rgba(255,255,255,.1);transform:translateY(-2px)}@media (max-width: 768px){.fill-in-blank-container{padding:1.5rem .75rem;min-height:calc(100vh - 60px);border-radius:0}.fill-in-blank-header{position:relative;top:0;right:0;align-items:center;min-width:100%;margin-bottom:1.25rem}.fill-in-progress-bar{width:100%;max-width:100%}.fill-in-progress-text{text-align:center}.progress-indicator{font-size:.9375rem}.current-number{font-size:1.5rem}.total-number{font-size:1rem}.question-content{padding:0}.nav-arrow-left,.nav-arrow-right{display:none}.top-part{margin-bottom:2rem}.sentence-area{width:100%}.sentence-display{font-size:1.5rem;padding:0;min-height:auto;margin-bottom:2rem;line-height:1.8;row-gap:2.5rem}.blank-input{font-size:1.5rem;padding:.375rem 1rem .625rem}.blank-hint{font-size:.8125rem;top:calc(100% + .125rem)}.sentence-instruction{font-size:.9375rem;padding-top:2rem;margin-top:2rem;margin-bottom:1.5rem}.fill-in-blank-actions{flex-direction:column;width:100%;gap:.75rem;margin-top:2rem}.btn-check-answer,.btn-skip-sentence{width:100%;padding:.875rem 1.25rem;font-size:1rem}.fill-in-blank-hint{font-size:.875rem;margin-top:1.25rem}.fill-in-blank-results{padding:1.5rem .75rem;min-height:calc(100vh - 60px)}.results-score{padding:2rem 1.25rem;border-radius:16px}.score-circle{width:100px;height:100px;font-size:2rem;border-width:6px;margin-bottom:1.5rem}.results-score h2{font-size:1.375rem}.results-score p{font-size:.9375rem}.results-actions{gap:.75rem}.btn-retry,.btn-continue,.btn-back{width:100%;padding:.875rem 1.5rem;font-size:1rem}}@media (max-width: 640px){.fill-in-blank-container{padding:1rem .5rem}.fill-in-blank-header{margin-bottom:1rem}.progress-indicator{font-size:.875rem}.current-number{font-size:1.375rem}.total-number{font-size:.9375rem}.top-part{margin-bottom:1.5rem}.sentence-display{font-size:1.25rem;margin-bottom:1.5rem;line-height:1.75;row-gap:2.25rem}.blank-input{font-size:1.25rem;padding:.25rem .5rem .5rem}.blank-hint{font-size:.75rem;top:calc(100% + .125rem)}.sentence-instruction{font-size:.875rem;padding-top:1.75rem;margin-top:1.75rem;margin-bottom:1.25rem}.fill-in-blank-actions{margin-top:1.5rem;gap:.625rem}.btn-check-answer,.btn-skip-sentence{padding:.75rem 1.25rem;font-size:.9375rem}.fill-in-blank-hint{font-size:.8125rem;margin-top:1rem}.fill-in-blank-results{padding:1rem .5rem}.results-score{padding:1.5rem .75rem}.score-circle{width:90px;height:90px;font-size:1.75rem;border-width:5px;margin-bottom:1.25rem}.results-score h2{font-size:1.25rem;margin-bottom:.875rem}.results-score p{font-size:.875rem;margin-bottom:.375rem}.btn-retry,.btn-continue,.btn-back{padding:.75rem 1.25rem;font-size:.9375rem}}.phonics-view{width:100%;max-width:1200px;margin:0 auto;padding:1.5rem 2rem;min-height:100vh;scroll-padding-top:var( --category-sticky-top, 160px )}.phonics-header{margin-bottom:1rem;text-align:center}.phonics-title{font-size:1.75rem;font-weight:600;color:#1a1a1a;margin:0 0 .5rem;letter-spacing:-.02em;line-height:1.2}.phonics-subtitle{font-size:.9375rem;color:#665665;line-height:1.5;max-width:600px;margin:0 auto}.phonics-sticky-bar{position:sticky;top:60px;z-index:50;background:white;border-bottom:1px solid #f0f0f0;padding:.875rem 0;margin:0 -2rem 1.5rem;box-shadow:0 2px 8px #00000005}.phonics-sticky-container{max-width:1200px;margin:0 auto;padding:0 2rem}.phonics-search{position:relative;max-width:600px;margin:0 auto .75rem}.phonics-search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:#999;pointer-events:none}.phonics-search-input{width:100%;padding:.625rem 3rem;font-size:.9375rem;color:#1a1a1a;background:white;border:1px solid #e0e0e0;border-radius:8px;outline:none;transition:all .15s ease;font-family:inherit}.phonics-search-input:focus{border-color:#3b82f6;box-shadow:0 4px 12px #3b82f61a}.phonics-search-input::placeholder{color:#999}.phonics-search-clear{position:absolute;right:1rem;top:50%;transform:translateY(-50%);background:none;border:none;color:#665665;font-size:1.25rem;cursor:pointer;padding:.5rem;line-height:1;transition:color .15s ease}.phonics-search-clear:hover{color:#1a1a1a}.phonics-quick-links{display:flex;flex-wrap:wrap;gap:.375rem;justify-content:center;max-width:900px;margin:0 auto}.phonics-quick-link{padding:.25rem .625rem;background:#fafbfc;border:1px solid #e0e0e0;border-radius:4px;text-decoration:none;color:#665665;font-size:.8125rem;font-weight:500;transition:all .15s ease;cursor:pointer;white-space:nowrap}.phonics-quick-link:hover{background:#f0f0f0;border-color:#3b82f6;color:#1a1a1a}.phonics-content{margin-top:1rem}.phonics-empty{text-align:center;padding:2rem;color:#665665;font-size:.9375rem}.phonics-category{margin-bottom:1.25rem;background:transparent;border-radius:8px;overflow:visible;border:none;scroll-margin-top:var( --category-sticky-top, 160px )}.phonics-category:not(:first-child){margin-top:.5rem}.phonics-category-sticky-wrapper{position:sticky;top:var( --category-sticky-top, 160px );z-index:40;background:#f8fafc;padding-top:.5rem;margin-top:-.5rem}.phonics-category-header{display:flex;align-items:center;gap:.75rem;padding:.875rem 1.25rem;background:#fafbfc;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background .15s ease;border-radius:8px 8px 0 0;border:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0}.phonics-category-header:hover{background:#f0f0f0}.phonics-category.collapsed .phonics-category-header{border-radius:8px}.phonics-category-icon{font-size:1.25rem;line-height:1}.phonics-category-title{flex:1;font-size:1.0625rem;font-weight:600;color:#1a1a1a;margin:0;letter-spacing:-.015em}.phonics-category-count{font-size:.875rem;color:#665665;font-weight:500}.phonics-category-toggle{background:none;border:none;padding:0;cursor:pointer;display:flex;align-items:center;color:#665665;transition:color .15s ease}.phonics-category-toggle:hover{color:#1a1a1a}.phonics-patterns{padding:1rem 1.25rem;border-radius:0 0 8px 8px;background:white;border-left:1px solid #e0e0e0;border-right:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0}.phonics-pattern{margin-bottom:1.5rem}.phonics-pattern:last-child{margin-bottom:0}.phonics-pattern-header{display:flex;align-items:baseline;gap:.75rem;margin-bottom:.875rem;padding-bottom:.5rem;border-bottom:1px solid #f0f0f0}.phonics-sound{font-size:1.125rem;font-weight:600;color:#1a1a1a;font-family:Courier New,monospace;letter-spacing:-.015em}.phonics-description{font-size:.875rem;color:#665665;font-style:italic}.phonics-spellings-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:.75rem}.phonics-spelling-card{background:#fafbfc;border-radius:6px;padding:.75rem;border:1px solid #e0e0e0;transition:all .15s ease}.phonics-spelling-card:hover{border-color:#3b82f6;box-shadow:0 2px 6px #3b82f61a}.phonics-spelling-label{margin-bottom:.625rem;padding-bottom:.5rem;border-bottom:1px solid #e0e0e0}.phonics-spelling-text{display:block;font-size:1rem;font-weight:600;color:#3b82f6;font-family:Courier New,monospace;letter-spacing:.01em;margin-bottom:.25rem}.phonics-spelling-note{display:block;font-size:.8125rem;color:#665665;font-style:italic;line-height:1.4}.phonics-examples-list{display:flex;flex-wrap:wrap;gap:.375rem}.phonics-example-btn{display:flex;align-items:center;gap:.375rem;padding:.3125rem .625rem;background:white;border:1px solid #e0e0e0;border-radius:4px;cursor:pointer;transition:all .15s ease;font-family:inherit}.phonics-example-btn:hover{background:#f7f9fc;border-color:#3b82f6;box-shadow:0 1px 3px #3b82f626}.phonics-example-text{font-size:.875rem;color:#1a1a1a;font-weight:500}.phonics-example-speaker{opacity:.6;transition:opacity .15s ease}.phonics-example-btn:hover .phonics-example-speaker{opacity:1}@media (max-width: 1024px){.phonics-view{padding:1.5rem 1.25rem}.phonics-title{font-size:1.5rem}.phonics-subtitle{font-size:.875rem}.phonics-spellings-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.625rem}.phonics-category-header{padding:.75rem 1rem;border-radius:8px 8px 0 0}.phonics-category.collapsed .phonics-category-header{border-radius:8px}.phonics-patterns{padding:.875rem 1rem;border-radius:0 0 8px 8px}}@media (max-width: 768px){.phonics-view{padding:.5rem}.phonics-header{margin-bottom:.5rem}.phonics-title{font-size:1.25rem}.phonics-subtitle{font-size:.8125rem;display:none}.phonics-sticky-bar{margin:0 -.5rem .75rem;padding:.5rem 0;top:56px}.phonics-sticky-container{padding:0 .5rem}.phonics-search{margin-bottom:.5rem}.phonics-search-icon{left:.75rem}.phonics-search-clear{right:.75rem}.phonics-search-input{padding:.5rem 2.5rem;font-size:.875rem;border-radius:6px}.phonics-quick-links{gap:.25rem}.phonics-quick-link{padding:.25rem .5rem;font-size:.75rem}.phonics-content{margin-top:.5rem}.phonics-category{margin-bottom:.75rem;border-radius:6px}.phonics-category-sticky-wrapper{padding-top:.375rem;margin-top:-.375rem}.phonics-category-header{padding:.625rem .75rem;gap:.5rem;border-radius:6px 6px 0 0}.phonics-category.collapsed .phonics-category-header{border-radius:6px}.phonics-category-icon{font-size:1rem}.phonics-category-title{font-size:.9375rem}.phonics-category-count{font-size:.75rem}.phonics-patterns{padding:.75rem;border-radius:0 0 6px 6px}.phonics-pattern{margin-bottom:1rem}.phonics-pattern:last-child{margin-bottom:0}.phonics-pattern-header{flex-direction:column;align-items:flex-start;gap:.25rem;margin-bottom:.625rem;padding-bottom:.375rem}.phonics-sound{font-size:.9375rem}.phonics-description{font-size:.75rem}.phonics-spellings-grid{grid-template-columns:1fr;gap:.5rem}.phonics-spelling-card{padding:.625rem;border-radius:4px}.phonics-spelling-label{margin-bottom:.5rem;padding-bottom:.375rem}.phonics-spelling-text{font-size:.875rem;margin-bottom:.1875rem}.phonics-spelling-note{font-size:.6875rem;line-height:1.3}.phonics-examples-list{gap:.25rem}.phonics-example-btn{padding:.25rem .5rem;border-radius:3px}.phonics-example-text{font-size:.75rem}.phonics-empty{padding:1.5rem 1rem;font-size:.875rem}}@media (max-width: 400px){.phonics-view{padding:.375rem}.phonics-title{font-size:1.125rem}.phonics-sticky-bar{margin:0 -.375rem .5rem;padding:.375rem 0}.phonics-sticky-container{padding:0 .375rem}.phonics-search-icon{left:.625rem}.phonics-search-clear{right:.625rem}.phonics-search-input{padding:.4375rem 2.25rem;font-size:.8125rem}.phonics-category-sticky-wrapper{padding-top:.375rem;margin-top:-.375rem}.phonics-category-header{padding:.5rem .625rem}.phonics-category.collapsed .phonics-category-header{border-radius:6px}.phonics-patterns{padding:.625rem}.phonics-spelling-card{padding:.5rem}}.phonics-example-btn:focus,.phonics-category-header:focus,.phonics-category-toggle:focus,.phonics-search-input:focus{outline:2px solid #3b82f6;outline-offset:2px}@media print{.phonics-search,.phonics-example-speaker,.phonics-category-toggle{display:none}.phonics-view{padding:1rem}.phonics-category{page-break-inside:avoid;border:1px solid #e0e0e0}.phonics-patterns{display:block!important}.phonics-example-btn{border:1px solid #e0e0e0}}.verb-pattern-help{min-height:100vh;background:#fafbfc;padding:2rem 1rem}.verb-pattern-help-container{max-width:1200px;margin:0 auto;background:#ffffff;border-radius:16px;box-shadow:0 2px 8px #0000000f}.help-nav{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 3rem 0}.help-nav-placeholder{width:120px}.btn-nav-back{background:transparent;color:#665665;border:none;padding:.75rem 1rem;border-radius:8px;font-size:.9375rem;font-weight:500;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;gap:.5rem}.btn-nav-back:hover{background:#f7f9fc;color:#1a1a1a}.help-page-indicator{font-size:.875rem;color:#999;font-weight:400}.page-current{font-weight:600;color:#1a1a1a}.page-total{color:#665665}.help-header{padding:2rem 3rem;text-align:center;border-bottom:1px solid #f0f0f0}.help-header h1{font-size:2.5rem;font-weight:300;color:#1a1a1a;letter-spacing:-.04em;margin:0 0 1rem;line-height:1.2}.help-subtitle{font-size:1.125rem;line-height:1.6;color:#665665;margin:0 0 1.5rem;max-width:800px;margin-left:auto;margin-right:auto}.listen-prompt{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-top:1.5rem}.speaker-icon{font-size:1.25rem;color:#3b82f6}.listen-prompt h3{font-size:1.125rem;font-weight:500;color:#1a1a1a;letter-spacing:-.015em;margin:0;line-height:1.3}.help-content{padding:0 3rem 2rem}.help-section{padding:2.5rem 0;border-bottom:1px solid #f0f0f0}.help-section:last-child{border-bottom:none}.help-section h2{font-size:1.5rem;font-weight:600;color:#1a1a1a;letter-spacing:-.025em;margin:0 0 1.5rem;line-height:1.3}.help-section h3{font-size:1rem;font-weight:600;color:#1a1a1a;margin:0 0 1rem;text-align:center;letter-spacing:-.015em}.verb-comparison-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-bottom:1.5rem}.verb-grid-3col{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.verb-column{background:#fafbfc;border-radius:12px;padding:1.5rem;border:1px solid #f0f0f0}.verb-forms{display:flex;flex-direction:column;gap:.75rem}.verb-form{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:#ffffff;border-radius:8px;border:1px solid #e0e0e0}.verb-form.clickable{cursor:pointer;transition:all .15s ease}.verb-form.clickable:hover{background:#f7f9fc;border-color:#3b82f6;transform:translateY(-1px)}.verb-form .pronoun{font-size:.9375rem;font-weight:500;color:#665665;min-width:60px}.verb-form .conjugation{font-size:1rem;font-weight:600;color:#1a1a1a;font-style:italic}.sound-explanation{margin-top:1.5rem;padding:1.25rem;background:#f0f9ff;border-radius:8px;border:1px solid #bae6fd}.sound-note{font-size:.9375rem;line-height:1.6;color:#0369a1;margin:0}.consistent-endings{background:#f0f9ff;border-radius:12px;padding:1.5rem;border:1px solid #bae6fd}.consistency-note{font-size:.9375rem;line-height:1.6;color:#0369a1;margin:0 0 1.5rem}.verb-conjugation-table{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.5rem}.table-header{display:grid;grid-template-columns:100px 1fr 1fr;gap:.5rem;margin-bottom:.5rem}.header-cell{font-size:1rem;font-weight:600;color:#0369a1;text-align:center;letter-spacing:-.015em;padding:.75rem 1rem}.table-row{display:grid;grid-template-columns:100px 1fr 1fr;gap:.5rem;align-items:stretch}.infinitive-cell{display:flex;align-items:center;justify-content:center;padding:.75rem 1rem;font-size:1rem;font-weight:600;color:#1a1a1a;background:transparent;letter-spacing:-.015em}.conjugation-cell{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;background:#ffffff;border-radius:8px;border:1px solid #e0f2fe}.conjugation-cell.clickable{cursor:pointer;transition:all .15s ease}.conjugation-cell.clickable:hover{background:#f7f9fc;border-color:#3b82f6;transform:translateY(-1px)}.conjugation-cell .example-verb{flex:1;font-size:.9375rem;font-weight:600;color:#1a1a1a;letter-spacing:-.01em}.conjugation-cell .example-english{font-size:.875rem;color:#665665;font-weight:400;min-width:80px}.ending-example .example-verb{flex:1;font-size:.9375rem;font-weight:600;color:#1a1a1a;font-style:italic}.ending-example .example-english{flex:1;font-size:.875rem;color:#665665}.reliability-note{font-size:.9375rem;line-height:1.6;color:#0369a1;margin:0;text-align:center;font-weight:500}.verb-groups-explanation{background:#f7f9fc;border-radius:12px;padding:1.5rem}.verb-groups-explanation p{font-size:.9375rem;line-height:1.6;color:#1a1a1a;margin:0 0 1.5rem}.group-examples{display:flex;flex-direction:column;gap:.75rem}.group-item{display:flex;align-items:center;gap:1rem;padding:.75rem 1rem;background:#ffffff;border-radius:8px;border:1px solid #e0e0e0}.group-label{font-size:.9375rem;font-weight:600;color:#3b82f6;font-family:SF Mono,Monaco,Inconsolata,Roboto Mono,monospace;min-width:80px}.group-desc{font-size:.9375rem;color:#665665;font-style:italic}.transition-note{background:#f7f9fc;border-radius:12px;padding:1.5rem 2rem;text-align:center}.transition-note p{font-size:1.125rem;line-height:1.6;color:#1a1a1a;margin:0;font-weight:500}.benefits-list{display:flex;flex-direction:column;gap:1rem}.benefit-item{display:flex;align-items:flex-start;gap:.75rem;padding:1rem 1.25rem;background:#fafbfc;border-radius:8px;border:1px solid #f0f0f0}.benefit-icon{font-size:1.125rem;flex-shrink:0;margin-top:.125rem}.benefit-text{font-size:.9375rem;line-height:1.6;color:#1a1a1a;margin:0}.help-footer{padding:0 3rem 3rem;display:flex;justify-content:space-between;align-items:center;gap:1rem}.help-footer:has(.btn-continue:only-child){justify-content:center}.btn-continue{background:#3b82f6;color:#fff;border:none;padding:1rem 1.5rem;border-radius:10px;font-size:1rem;font-weight:600;letter-spacing:-.01em;cursor:pointer;transition:all .15s ease;min-width:200px}.btn-back{background:transparent;color:#665665;border:none;padding:1rem 1.5rem;border-radius:10px;font-size:1rem;font-weight:500;letter-spacing:-.01em;cursor:pointer;transition:all .15s ease;min-width:200px}.btn-back:hover{background:#f7f9fc;color:#1a1a1a}@media (max-width: 768px){.verb-pattern-help{padding:.5rem}.verb-pattern-help-container{border-radius:12px}.help-nav{padding:.75rem .5rem 0}.help-nav-placeholder{width:60px}.btn-nav-back{padding:.5rem .75rem;font-size:.875rem}.help-page-indicator{font-size:.8125rem}.help-header{padding:1.25rem .5rem}.help-header h1{font-size:1.75rem;margin-bottom:.75rem}.help-subtitle{font-size:1rem;margin-bottom:1rem}.listen-prompt{margin-top:1rem;gap:.5rem}.listen-prompt h3{font-size:1rem}.help-content{padding:0 .5rem 1rem}.help-section{padding:1.5rem 0}.help-section h2{font-size:1.25rem;margin-bottom:1.25rem}.help-section h3{font-size:1rem;margin-bottom:.75rem}.help-footer{padding:0 .5rem 1.5rem}.verb-comparison-grid{grid-template-columns:1fr;gap:1rem}.verb-column{padding:1.25rem}.verb-form{padding:.625rem .875rem}.verb-form .pronoun{font-size:.875rem;min-width:50px}.verb-form .conjugation{font-size:1rem}.sound-explanation{margin-top:1.25rem;padding:1rem}.sound-note{font-size:1rem}.consistent-endings{padding:1.25rem}.consistency-note{font-size:1rem;margin-bottom:1.25rem}.verb-conjugation-table{gap:.75rem}.table-header{grid-template-columns:1fr;text-align:left}.header-cell{font-size:1rem;padding:.625rem .875rem}.header-cell:first-child{display:none}.table-row{grid-template-columns:1fr;gap:.625rem;padding:.875rem;background:#f0f9ff;border-radius:8px;margin-bottom:.5rem}.infinitive-cell{order:1;justify-content:flex-start;font-weight:600;color:#0369a1;padding:0;margin-bottom:.5rem;font-size:1rem}.conjugation-cell{order:2;margin-bottom:.25rem;padding:.625rem .875rem}.conjugation-cell .example-verb{font-size:.875rem}.conjugation-cell .example-english{font-size:.8125rem;min-width:70px}.reliability-note{font-size:1rem}.verb-groups-explanation{padding:1.25rem}.verb-groups-explanation p{font-size:1rem;margin-bottom:1.25rem}.group-item{flex-direction:column;align-items:flex-start;gap:.5rem;padding:.625rem .875rem}.group-label{min-width:auto;font-size:.875rem}.group-desc{font-size:1rem}.transition-note{padding:1.25rem 1.5rem}.transition-note p{font-size:1.125rem}.benefit-item{padding:.875rem 1rem}.benefit-icon,.benefit-text{font-size:1rem}.help-footer{flex-direction:column;gap:.75rem}.btn-continue,.btn-back{width:100%;min-width:auto;padding:.875rem 1.25rem}.section-understood{justify-content:center;margin-top:1rem}.section-understood .understood-btn{padding:.5rem .875rem;font-size:.8125rem}}.section-understood{display:flex;justify-content:flex-end;margin-top:1.5rem;padding-top:1rem;border-top:1px solid #f0f0f0}.section-understood .understood-btn{background:transparent;border:1px solid #e0e0e0;color:#665665;padding:.5rem 1rem;border-radius:8px;font-size:.875rem;font-weight:600;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;gap:.5rem;letter-spacing:-.01em}.section-understood .understood-btn:hover{border-color:#15803d;color:#15803d;background:#f7f9fc}.section-understood .understood-btn.understood{background:rgba(59,246,96,.1);border-color:#76ba8f;color:#15803d}.section-understood .understood-btn.understood:hover{background:rgba(59,246,96,.2);border-color:#15803d}.liaison-help{min-height:100vh;background:#ffffff;padding:0}.liaison-container{max-width:760px;margin:0 auto;padding:3rem 2rem}.liaison-header{text-align:center;margin-bottom:3rem}.module-prefix{font-size:.875rem;font-weight:500;color:#999;letter-spacing:.05em;text-transform:uppercase;margin-bottom:.75rem}.liaison-header h1{font-size:2.5rem;font-weight:300;color:#1a1a1a;letter-spacing:-.04em;margin:0 0 1rem;line-height:1.2}.liaison-subtitle{font-size:1.125rem;line-height:1.6;color:#665665;margin:0;font-weight:400}.listen-prompt{margin-top:2rem;padding:1.25rem 1.5rem;background:#fbbf24;border-radius:12px;display:inline-flex;align-items:center;gap:.75rem}.speaker-icon{font-size:1.5rem}.listen-prompt h3{font-size:1rem;font-weight:600;color:#1a1a1a;letter-spacing:-.015em;margin:0}.liaison-section{margin-bottom:4rem}.liaison-section h2{font-size:1.5rem;font-weight:600;color:#1a1a1a;letter-spacing:-.025em;margin:0 0 .75rem;line-height:1.3}.liaison-section .section-intro{font-size:1rem;line-height:1.7;color:#665665;margin:0 0 2rem}.phrase-list{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem}.phrase-item{background:#fafbfc;border-radius:12px;padding:1.25rem 1.5rem;cursor:pointer;transition:all .15s ease;border:2px solid transparent;display:flex;align-items:center;justify-content:space-between;gap:1rem}.phrase-item:hover{background:#f0f9ff;border-color:#3b82f6}.phrase-item:active{transform:scale(.99)}.phrase-item.wrong{background:#fef2f2;border-color:#fecaca}.phrase-item.wrong:hover{background:#fee2e2;border-color:#dc2626}.phrase-item.wrong .phrase-french{color:#991b1b}.phrase-item.correct{background:#f0fdf4;border-color:#bbf7d0}.phrase-item.correct:hover{background:#dcfce7;border-color:#15803d}.phrase-item.correct .phrase-french{color:#15803d}.phrase-content{flex:1;display:flex;flex-direction:column;gap:.25rem}.phrase-french{font-size:1.25rem;font-weight:600;color:#1a1a1a;letter-spacing:-.02em}.phrase-pronunciation{font-size:.9375rem;color:#999;font-style:italic}.comparison-layout{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:2rem}.comparison-column h3{font-size:1rem;font-weight:600;color:#1a1a1a;margin:0 0 1rem;letter-spacing:-.015em;display:flex;align-items:center;gap:.5rem}.comparison-column.wrong h3{color:#dc2626}.comparison-column.correct h3{color:#15803d}.insight-box{background:#f0f9ff;border-radius:12px;padding:1.5rem;margin:2rem 0}.insight-box p{font-size:1rem;line-height:1.7;color:#0369a1;margin:0}.insight-box strong{font-weight:600;color:#075985}.insight-box em{font-style:italic}.examples-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;margin-bottom:2rem}.example-group h3{font-size:.875rem;font-weight:600;color:#665665;margin:0 0 1rem;letter-spacing:0;text-transform:uppercase}.example-group .phrase-list{gap:.75rem}.example-group .phrase-item{padding:1rem 1.25rem}.example-group .phrase-french{font-size:1.125rem}.key-takeaway{background:#fafbfc;border-radius:12px;padding:2rem;text-align:center;margin:2rem 0}.key-takeaway p{font-size:1.125rem;line-height:1.7;color:#1a1a1a;margin:0;font-weight:400}.key-takeaway strong{font-weight:600}.section-footer{display:flex;justify-content:flex-end;padding-top:1.5rem;border-top:1px solid #f0f0f0;margin-top:2rem}.understood-btn{background:transparent;border:2px solid #e0e0e0;color:#665665;padding:.75rem 1.5rem;border-radius:10px;font-size:.9375rem;font-weight:600;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;gap:.5rem;letter-spacing:-.01em}.understood-btn:hover{border-color:#15803d;color:#15803d;background:#f0fdf4}.understood-btn.understood{background:#f0fdf4;border-color:#15803d;color:#15803d}.understood-btn.understood:hover{background:#dcfce7}.liaison-footer{display:flex;justify-content:center;padding-top:3rem}.btn-continue{background:#3b82f6;color:#fff;border:none;padding:1rem 2rem;border-radius:10px;font-size:1rem;font-weight:600;letter-spacing:-.01em;cursor:pointer;transition:all .15s ease;min-width:200px}.btn-continue:hover{background:#2563eb}.btn-continue:active{transform:scale(.98)}@media (max-width: 768px){.liaison-container{padding:2rem 1rem}.liaison-header{margin-bottom:2rem}.liaison-header h1{font-size:2rem}.liaison-subtitle{font-size:1rem}.listen-prompt{padding:1rem 1.25rem;margin-top:1.5rem}.liaison-section{margin-bottom:3rem}.liaison-section h2{font-size:1.25rem}.comparison-layout,.examples-grid{grid-template-columns:1fr;gap:1.5rem}.phrase-item{padding:1rem 1.25rem}.phrase-french{font-size:1.125rem}.insight-box{padding:1.25rem}.key-takeaway{padding:1.5rem}.key-takeaway p{font-size:1rem}.section-footer{justify-content:center}.liaison-footer{padding-top:2rem}.btn-continue{width:100%}}.reference-modules{padding:2.5rem 2.5rem 5rem;max-width:1200px;margin:0 auto;background:#ffffff;min-height:100vh}.reference-nav{margin-bottom:3rem}.btn-back-to-dashboard{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1rem;background:transparent;color:#665665;border:none;border-radius:8px;font-size:.9375rem;font-weight:500;letter-spacing:-.01em;cursor:pointer;transition:all .15s ease}.btn-back-to-dashboard:hover{background:#f7f9fc;color:#1a1a1a}.btn-back-to-dashboard:active{background:#f0f0f0}.reference-header{text-align:center;margin-bottom:3rem}.reference-header h1{font-size:2.5rem;font-weight:300;color:#1a1a1a;margin:0 0 1rem;letter-spacing:-.04em;line-height:1.2}.reference-header p{font-size:1.125rem;color:#665665;font-weight:400;line-height:1.6;margin:0}.reference-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:2rem}.reference-card{background:#ffffff;border-radius:12px;overflow:hidden;cursor:pointer;transition:all .15s ease;border:1px solid #f0f0f0}.reference-card:hover{border-color:#e0e0e0;box-shadow:0 4px 12px #00000014}.card-image{position:relative;height:200px;overflow:hidden;background:#fafbfc}.card-image img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.reference-card:hover .card-image img{transform:scale(1.03)}.card-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.3);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s ease}.reference-card:hover .card-overlay{opacity:1}.card-icon{width:2.5rem;height:2.5rem;color:#f1f1f1f0;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3))}.card-content{padding:1.5rem}.card-category{font-size:.75rem;font-weight:600;color:#999;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.card-title{font-size:1.25rem;font-weight:600;color:#1a1a1a;margin:0 0 .75rem;line-height:1.3;letter-spacing:-.015em}.card-description{font-size:.9375rem;color:#665665;line-height:1.6;font-weight:400;margin:0}@media (max-width: 768px){.reference-modules{padding:2rem 1.5rem 4rem}.reference-nav{margin-bottom:2rem}.reference-header{margin-bottom:2.5rem}.reference-header h1{font-size:2rem}.reference-header p{font-size:1rem}.reference-grid{grid-template-columns:1fr;gap:1.5rem}.card-content{padding:1.25rem}.card-title{font-size:1.125rem}}@media (max-width: 480px){.reference-modules{padding:1.5rem 1rem 3rem}.btn-back-to-dashboard{padding:.625rem .875rem;font-size:.875rem}.reference-header{margin-bottom:2rem}.reference-header h1{font-size:1.75rem}.reference-header p{font-size:.9375rem}.card-image{height:180px}.card-content{padding:1rem}.card-title{font-size:1.0625rem}.card-description{font-size:.875rem}}.feedback-modal-backdrop{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.48);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem;animation:fadeIn .15s ease}.feedback-modal{background:#ffffff;border-radius:16px;max-width:600px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 24px 80px #0003;animation:slideUp .25s ease}.feedback-modal-header{display:flex;align-items:center;justify-content:space-between;padding:3rem 3rem 0;border-bottom:1px solid #f0f0f0;margin-bottom:0}.feedback-modal-header h2{font-size:1.5rem;font-weight:600;color:#1a1a1a;letter-spacing:-.025em;margin:0}.feedback-close-btn{background:none;border:none;font-size:1.5rem;color:#999;cursor:pointer;padding:.5rem;border-radius:6px;transition:all .15s ease;line-height:1}.feedback-close-btn:hover{background:#f7f9fc;color:#1a1a1a}.feedback-modal-content{padding:3rem}.feedback-intro{color:#665665;font-size:1rem;line-height:1.6;margin-bottom:2rem}.feedback-success,.feedback-error{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;border-radius:8px;margin-bottom:1.5rem;font-size:.9375rem}.feedback-success{background:#f0f9ff;color:#0369a1;border:1px solid #bae6fd}.feedback-error{background:#fef2f2;color:#dc2626;border:1px solid #fecaca}.feedback-success-icon,.feedback-error-icon{font-size:1.125rem;font-weight:600}.feedback-form{display:flex;flex-direction:column;gap:1.5rem}.feedback-form-group{display:flex;flex-direction:column;gap:.5rem}.feedback-form-group label{font-size:.9375rem;font-weight:500;color:#1a1a1a;letter-spacing:-.01em}.feedback-form-group input,.feedback-form-group select,.feedback-form-group textarea{padding:.75rem 1rem;border:1px solid #e0e0e0;border-radius:8px;font-size:1rem;color:#1a1a1a;background:#ffffff;transition:all .15s ease;font-family:inherit}.feedback-form-group input:focus,.feedback-form-group select:focus,.feedback-form-group textarea:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.feedback-form-group input:disabled,.feedback-form-group select:disabled,.feedback-form-group textarea:disabled{background:#f7f9fc;color:#999;cursor:not-allowed}.feedback-form-group textarea{resize:vertical;min-height:120px;line-height:1.6}.feedback-form-group input::placeholder,.feedback-form-group textarea::placeholder{color:#999}.feedback-form-actions{display:flex;gap:1rem;justify-content:flex-end;margin-top:1rem;padding-top:1.5rem;border-top:1px solid #f0f0f0}.feedback-btn{padding:1rem 1.5rem;border-radius:10px;font-size:1rem;font-weight:600;letter-spacing:-.01em;cursor:pointer;transition:all .15s ease;border:none;min-width:120px}.feedback-btn:disabled{opacity:.6;cursor:not-allowed}.feedback-btn-primary{background:#3b82f6;color:#fff}.feedback-btn-primary:hover:not(:disabled){background:#2563eb}.feedback-btn-secondary{background:transparent;color:#665665;border:1px solid #e0e0e0}.feedback-btn-secondary:hover:not(:disabled){background:#f7f9fc;border-color:#cbd5e1}@media (max-width: 640px){.feedback-modal-backdrop{padding:0}.feedback-modal{margin:0;max-height:100vh;height:100vh;border-radius:0}.feedback-modal-header{padding:1.25rem 1rem;padding-top:calc(1.25rem + env(safe-area-inset-top))}.feedback-modal-header h2{font-size:1.25rem}.feedback-close-btn{padding:.375rem;font-size:1.25rem}.feedback-modal-content{padding:1.5rem 1rem;padding-bottom:calc(1.5rem + env(safe-area-inset-bottom))}.feedback-intro{font-size:.9375rem;margin-bottom:1.5rem}.feedback-form{gap:1.25rem}.feedback-form-group{gap:.375rem}.feedback-form-group label{font-size:.875rem}.feedback-form-group input,.feedback-form-group select,.feedback-form-group textarea{padding:.75rem .875rem;font-size:.9375rem}.feedback-form-group textarea{min-height:100px}.feedback-form-actions{flex-direction:column;gap:.625rem;margin-top:.75rem;padding-top:1.25rem}.feedback-btn{width:100%;padding:.875rem 1.25rem;font-size:.9375rem}.feedback-success,.feedback-error{padding:.875rem 1rem;font-size:.875rem;gap:.5rem}}.feedback-admin{max-width:1200px;margin:0 auto;padding:2rem;font-family:inherit}.feedback-admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid #e0e0e0}.feedback-admin-header h1{font-size:1.5rem;font-weight:600;color:#1a1a1a;margin:0}.feedback-filters{display:flex;gap:.5rem}.feedback-filters button{padding:.5rem 1rem;border:1px solid #e0e0e0;background:#ffffff;color:#665665;border-radius:6px;cursor:pointer;transition:all .15s ease;font-size:.875rem;font-weight:500}.feedback-filters button:hover{background:#f7f9fc;border-color:#cbd5e1}.feedback-filters button.active{background:#3b82f6;color:#fff;border-color:#3b82f6}.feedback-list{display:grid;gap:1rem}.feedback-item{background:#ffffff;border:1px solid #e0e0e0;border-radius:8px;padding:1.5rem;cursor:pointer;transition:all .15s ease}.feedback-item:hover{border-color:#cbd5e1;box-shadow:0 2px 8px #0000000f}.feedback-item.selected{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.feedback-item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.feedback-meta{display:flex;gap:1rem;align-items:center}.feedback-category{background:#f7f9fc;color:#1a1a1a;padding:.25rem .75rem;border-radius:4px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.feedback-status{font-size:.875rem;font-weight:600}.feedback-date{color:#999;font-size:.875rem}.feedback-content{margin-bottom:1rem}.feedback-text{color:#1a1a1a;line-height:1.6;margin:0 0 .75rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.feedback-contact{display:flex;gap:1rem;font-size:.875rem;color:#665665}.feedback-actions{display:flex;gap:.5rem}.action-btn{padding:.5rem 1rem;border:none;border-radius:6px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .15s ease}.review-btn{background:#3b82f6;color:#fff}.review-btn:hover{background:#2563eb}.dismiss-btn{background:#6b7280;color:#fff}.dismiss-btn:hover{background:#4b5563}.resolve-btn{background:#10b981;color:#fff}.resolve-btn:hover{background:#059669}.delete-btn{background:#ef4444;color:#fff}.delete-btn:hover{background:#dc2626}.reopen-btn{background:#f59e0b;color:#fff}.reopen-btn:hover{background:#d97706}.feedback-detail{position:fixed;top:0;right:0;bottom:0;width:400px;background:#ffffff;border-left:1px solid #e0e0e0;box-shadow:-4px 0 12px #0000001a;z-index:1000;display:flex;flex-direction:column}.feedback-detail-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid #e0e0e0}.feedback-detail-header h3{font-size:1.125rem;font-weight:600;color:#1a1a1a;margin:0}.close-detail{background:none;border:none;font-size:1.5rem;color:#999;cursor:pointer;padding:.25rem;border-radius:4px;transition:all .15s ease}.close-detail:hover{background:#f7f9fc;color:#1a1a1a}.feedback-detail-content{flex:1;padding:1.5rem;overflow-y:auto}.detail-section{margin-bottom:1.5rem}.detail-section label{display:block;font-size:.875rem;font-weight:600;color:#665665;margin-bottom:.5rem}.detail-section span{color:#1a1a1a;font-size:.9375rem}.feedback-text-detail{background:#f7f9fc;padding:1rem;border-radius:6px;color:#1a1a1a;line-height:1.6;white-space:pre-wrap}.loading{text-align:center;padding:3rem;color:#665665;font-size:1rem}.empty-state{text-align:center;padding:3rem;color:#999}.empty-state p{margin:0;font-size:1rem}@media (max-width: 768px){.feedback-admin{padding:1rem}.feedback-admin-header{flex-direction:column;gap:1rem;align-items:stretch}.feedback-filters{flex-wrap:wrap}.feedback-detail{width:100%;position:fixed;top:0;left:0;right:0;bottom:0}}.study-container{padding:1rem;max-width:900px;margin:0 auto}.study-intro{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem}.btn-skip{background:transparent;color:#222;border:1px solid #ebebeb;padding:.625rem 1.25rem;border-radius:8px;cursor:pointer;font-size:.9375rem;transition:all .15s;font-weight:500}.btn-skip:hover{background:#fafbfc}.study-mode{background:#ffffff;border-radius:12px;padding:3rem;box-shadow:0 1px 2px #0000000a;border:none}.study-header{text-align:center;margin-bottom:3rem}.btn-back-to-concepts{background:transparent;color:#222;border:1px solid #ebebeb;padding:.625rem 1.25rem;border-radius:8px;cursor:pointer;font-size:.9375rem;transition:all .15s;font-weight:500}.btn-back-to-concepts:hover{background:#fafbfc}.study-header h3{color:#222;margin-bottom:.5rem;font-size:1.5rem;font-weight:500;letter-spacing:-.02em}.study-header p{color:#717171;margin-bottom:2rem;font-size:.9375rem}.study-progress-bar{height:2px;background:#ebebeb;border-radius:1px;overflow:hidden;margin:1.5rem auto;max-width:300px}.study-progress-fill{height:100%;background:linear-gradient(90deg,#3b82f6 0%,#10b981 100%);transition:width .3s ease}.study-progress-text{color:#b0b0b0;font-size:.8125rem;font-weight:400}.flashcard{background:linear-gradient(135deg,#1e293b 0%,#0f172a 100%);border-radius:16px;padding:5rem 3rem;min-height:400px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;margin-bottom:3rem;border:none;box-shadow:0 8px 32px #0000001f}.flashcard-front,.flashcard-back{width:100%;max-width:600px}.flashcard-label{color:#94a3b8;font-size:.6875rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:2rem;font-weight:600}.flashcard-content h2,.flashcard-answer h2{color:#fff;font-size:3.5rem;margin:0;font-weight:300;letter-spacing:-.03em;line-height:1.1}.flashcard-article{color:#e2e8f0;font-size:1rem;margin-top:2rem;padding:1.25rem 1.5rem;background:rgba(255,255,255,.08);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:8px;font-family:SF Mono,Monaco,Inconsolata,Fira Code,monospace;border:1px solid rgba(255,255,255,.1)}.reveal-btn{background:#ffffff;color:#1e293b;border:none;padding:1rem 2.5rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;margin-top:3rem;transition:all .15s;letter-spacing:-.01em}.reveal-btn:hover{background:#f1f5f9;transform:scale(1.02)}.flashcard-hint,.flashcard-instruction{background:rgba(255,255,255,.05);color:#94a3b8;padding:.5rem .875rem;border-radius:20px;margin-top:.75rem;font-size:.75rem;line-height:1.4;border:1px solid rgba(255,255,255,.08);display:inline-flex;align-items:center;max-width:90%}.flashcard-back{display:flex;flex-direction:column;align-items:center}.study-navigation{display:flex;justify-content:space-between;gap:1rem}.study-navigation .btn-nav{flex:1;max-width:200px;padding:.875rem 1.5rem;border-radius:8px;font-weight:500;font-size:.9375rem}.study-navigation .btn-nav:not(.btn-primary){background:transparent;color:#222;border:1px solid #ebebeb}.study-navigation .btn-nav:not(.btn-primary):hover{background:#fafbfc}.vocab-divider{height:1rem}.vocab-section-break{height:2px;background:#d0d0d0;margin:1rem 0;opacity:.8;border-radius:1px}.vocab-reference{border-radius:8px;overflow:hidden;border:none;margin-top:1.5rem}.vocab-header{background:transparent;padding:1rem 0 .75rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #ebebeb;transition:opacity .15s}.vocab-header:hover{opacity:.7}.vocab-header h4{margin:0;color:#b0b0b0;font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em}.toggle-btn{background:none;border:none;color:#b0b0b0;font-size:.8125rem;cursor:pointer;padding:.25rem}.vocab-table{overflow-x:auto}.vocab-table table{width:100%;border-collapse:collapse}.vocab-table th{background:transparent;padding:.75rem 0;text-align:left;font-size:.625rem;font-weight:600;color:#b0b0b0;border-bottom:1px solid #ebebeb;text-transform:uppercase;letter-spacing:.08em}.vocab-table td{padding:.75rem 0;border-bottom:1px solid #f0f0f0;font-size:.8125rem}.vocab-table tbody tr:last-child td{border-bottom:none}.vocab-table tbody tr.vocab-row-clickable{cursor:pointer;transition:background-color .15s}.vocab-table tbody tr.vocab-row-clickable:hover{background-color:#fafbfc}.vocab-table tbody tr.vocab-row-clickable:hover .speak-btn{background:rgba(59,130,246,.1);color:#3b82f6;transform:scale(1.05)}.vocab-french{color:#2563eb;font-weight:600;font-family:SF Mono,Monaco,Inconsolata,Fira Code,monospace;font-size:.8125rem}.vocab-french.feminine{color:#ec4899;font-weight:600}.vocab-french.masculine,.gender-masculine{color:#2563eb;font-weight:600}.vocab-english{color:#222;font-size:.8125rem}.vocab-note{color:#b0b0b0;font-size:.75rem;font-style:italic}@media (max-width: 968px){.study-container{padding:.75rem}.study-mode{padding:2rem .75rem}.flashcard{padding:3rem 1rem;min-height:320px}.flashcard-content h2,.flashcard-answer h2{font-size:2.5rem}.study-navigation{flex-direction:column-reverse}.study-navigation .btn-nav{max-width:none}}@media (max-width: 768px){.study-container{padding:.5rem}.study-mode{padding:1.5rem .5rem}.study-header{margin-bottom:2rem}.study-header h3{font-size:1.25rem}.study-header p{margin-bottom:1.5rem}.flashcard{padding:2.5rem .75rem;min-height:300px;margin-bottom:2rem}.flashcard-content h2,.flashcard-answer h2{font-size:2rem}.flashcard-label{margin-bottom:1.5rem}.flashcard-article{margin-top:1.5rem;padding:1rem 1.25rem;font-size:.9375rem}.reveal-btn{margin-top:2rem;padding:.875rem 2rem;font-size:.9375rem}.study-navigation .btn-nav{padding:.875rem 1.25rem}}@media (max-width: 640px){.study-container{padding:.25rem}.study-mode{padding:1.25rem .25rem;border-radius:8px}.study-intro{margin-bottom:1rem}.study-header{margin-bottom:1.5rem}.study-header h3{font-size:1.125rem;margin-bottom:.375rem}.study-header p{margin-bottom:1.25rem;font-size:.875rem}.study-progress-bar{margin:1.25rem auto}.flashcard{padding:2rem .5rem;min-height:280px;margin-bottom:1.5rem;border-radius:12px}.flashcard-content h2,.flashcard-answer h2{font-size:1.75rem}.flashcard-label{margin-bottom:1.25rem;font-size:.625rem}.flashcard-article{margin-top:1.25rem;padding:.875rem 1rem;font-size:.875rem}.reveal-btn{margin-top:1.5rem;padding:.75rem 1.75rem;font-size:.875rem}.flashcard-hint,.flashcard-instruction{padding:.375rem .75rem;font-size:.6875rem;margin-top:.625rem}.study-navigation{gap:.75rem}.study-navigation .btn-nav{padding:.75rem 1rem;font-size:.875rem}.btn-skip,.btn-back-to-concepts{padding:.5rem 1rem;font-size:.875rem}.vocab-reference{margin-top:1.25rem}.vocab-header{padding:.875rem 0 .625rem}.vocab-table th,.vocab-table td{padding:.625rem 0;font-size:.75rem}.vocab-french,.vocab-english{font-size:.75rem}.vocab-note{font-size:.6875rem}}.module-exam{max-width:800px;margin:2.5rem auto;padding:2.5rem 2.5rem 6rem}.exam-header{text-align:center;margin-bottom:2.5rem}.exam-header h2{color:#1e293b;margin-bottom:.75rem;font-size:1.625rem;font-weight:600;letter-spacing:-.02em}.exam-header p{color:#64748b;margin-bottom:1.25rem;font-size:1rem}.exam-progress-bar{height:3px;background:#e2e8f0;border-radius:2px;overflow:hidden;margin:1.25rem auto;max-width:500px}.exam-progress-fill{height:100%;background:#3b82f6;transition:width .3s ease}.exam-progress-text{color:#64748b;font-size:.9375rem}.exam-question{background:#ffffff;border-radius:8px;padding:2rem;margin-bottom:2.5rem;box-shadow:0 1px 3px #0000001a;border:1px solid #e2e8f0}.question-number{color:#64748b;font-weight:600;margin-bottom:1.25rem;font-size:.8125rem;text-transform:uppercase;letter-spacing:.05em}.question-prompt{font-size:1.0625rem;color:#64748b;margin-bottom:.625rem}.question-english{font-size:1.375rem;color:#1e293b;margin-bottom:2rem;font-weight:500;line-height:1.4}.answer-input{margin-bottom:1.75rem}.answer-input label{display:block;color:#64748b;margin-bottom:.625rem;font-weight:500;font-size:.9375rem}.answer-input input{width:100%;padding:1rem 1.125rem;font-size:1.0625rem;border:1px solid #e2e8f0;border-radius:6px;font-family:SF Mono,Monaco,Inconsolata,Fira Code,monospace;transition:border-color .2s;background:#ffffff;color:#1e293b}.answer-input input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.question-hint{background:#fffbeb;border-left:3px solid #fbbf24;padding:1.125rem;border-radius:6px;color:#92400e;font-size:.9375rem;line-height:1.6}.exam-navigation{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;gap:1.25rem;background:#ffffff;padding:1.25rem 2rem;border-top:2px solid #e2e8f0;box-shadow:0 -2px 10px #0000001a;z-index:1000}.exam-nav-center{flex:1;text-align:center}.answered-indicator{color:#059669;font-weight:600;font-size:.9375rem}.unanswered-indicator{color:#dc2626;font-weight:600;font-size:.9375rem}.btn-submit{font-size:1.0625rem;padding:.875rem 1.75rem}.exam-warning{text-align:center;color:#dc2626;background:#fef2f2;padding:1rem;border-radius:6px;margin:1.25rem 0;font-weight:500;font-size:.9375rem;border:1px solid #fecaca}.exam-results{max-width:650px;margin:3rem auto;padding:0 1.5rem}.exam-results-header{text-align:center;margin-bottom:3rem}.exam-results-header h2{color:#1a1a1a;margin-bottom:1.5rem;font-size:1rem;font-weight:600;letter-spacing:-.01em;text-transform:uppercase;color:#666}.score{font-size:4.5rem;font-weight:300;margin:0;letter-spacing:-.04em;line-height:1}.score.passed{color:#059669}.score.failed{color:#dc2626}.exam-passed,.exam-failed{background:#ffffff;border-radius:12px;padding:3rem 2.5rem;margin-bottom:2.5rem;border:1px solid #f0f0f0;text-align:center}.exam-passed,.exam-failed{border-top:none}.exam-message h3{color:#1a1a1a;margin-bottom:1.5rem;font-size:1.5rem;font-weight:600;letter-spacing:-.02em}.exam-message p{color:#666;margin-bottom:.75rem;font-size:1.0625rem;line-height:1.7}.exam-message p:last-child{margin-bottom:0}.exam-actions{display:flex;gap:1.25rem;justify-content:center;margin-top:2.5rem;flex-wrap:wrap}.btn-large{font-size:1rem;font-weight:600;padding:1rem 2rem;margin:2rem auto 0;display:inline-block;letter-spacing:-.01em}.exam-breakdown{margin-top:2.5rem}.exam-breakdown h4{color:#1e293b;margin-bottom:1.25rem;font-size:1.25rem;font-weight:600}.exam-item{background:#ffffff;border-radius:6px;padding:1.25rem;margin-bottom:1rem;border:1px solid #e2e8f0}.exam-item.correct{border-left:3px solid #059669;background:#f0fdf4}.exam-item.incorrect{border-left:3px solid #dc2626;background:#fef2f2}.exam-item-header{display:flex;justify-content:space-between;margin-bottom:.75rem}.exam-item-number{font-weight:600;color:#1e293b;font-size:.9375rem}.exam-item-prompt{color:#64748b;font-style:italic;font-size:.9375rem}.exam-item-details{font-size:.9375rem;color:#1e293b;line-height:1.6}.exam-item-details>div{margin:.375rem 0}.exam-item-correct{color:#059669;margin-top:.625rem;font-size:.9375rem}.exam-item-warning{color:#d97706;background:#fef3c7;padding:.5rem;border-radius:4px;margin-top:.625rem;font-size:.9375rem;border-left:3px solid #f59e0b}.module-complete-screen{max-width:700px;margin:4rem auto;padding:2.5rem;text-align:center}.completion-celebration{background:#ffffff;border-radius:8px;padding:3rem;margin-bottom:2.5rem;box-shadow:0 1px 3px #0000001a;border:1px solid #e2e8f0}.completion-celebration h2{color:#1e293b;font-size:2.25rem;margin-bottom:1.25rem;font-weight:600;letter-spacing:-.025em}.completion-celebration>p{color:#64748b;font-size:1.1875rem;margin-bottom:2.5rem;line-height:1.6}.completion-stats{display:flex;justify-content:center;gap:3.5rem;margin-top:2.5rem}.stat{text-align:center}.stat-number{font-size:3rem;font-weight:700;color:#1e293b;margin-bottom:.625rem;letter-spacing:-.03em}.stat-label{color:#64748b;font-size:.9375rem}.completion-actions{display:flex;gap:1.25rem;justify-content:center;flex-wrap:wrap}.ready-for-exam{background:#f0fdf4;color:#059669;padding:1.75rem;border-radius:6px;margin-bottom:2.5rem;text-align:center;border:1px solid #d1fae5}.exam-ready-message{font-size:1.1875rem;font-weight:500;margin-bottom:1.25rem;color:#059669;line-height:1.5}.btn-exam{font-size:1.0625rem;padding:.875rem 1.75rem;background:#059669;color:#fff;border:none}.btn-exam:hover{background:#047857}.right-pane{flex:1;padding:2.5rem;position:relative}.unit-exam{max-width:900px;margin:2.5rem auto;padding:2.5rem 2.5rem 6rem}.exam-description{font-size:1.0625rem;color:#64748b;margin-bottom:1.75rem}.exam-overall-progress{margin:1.75rem 0}.exam-overall-progress .progress-text{color:#64748b;font-size:.9375rem;margin-bottom:.625rem;text-align:center;font-weight:500}.section-indicators{display:flex;gap:1rem;justify-content:center;margin-top:1.75rem}.section-indicator{padding:.75rem 1.5rem;border-radius:6px;background:#f8fafc;border:1px solid #e2e8f0;color:#64748b;font-weight:500;font-size:.9375rem;transition:all .2s}.section-indicator.active{background:#3b82f6;color:#fff;border-color:#3b82f6;font-weight:600}.section-indicator.completed{background:#f0fdf4;color:#059669;border-color:#d1fae5}.exam-section{background:#ffffff;border-radius:8px;padding:2.5rem;margin:2.5rem 0;box-shadow:0 1px 3px #0000001a;border:1px solid #e2e8f0}.section-header{text-align:center;margin-bottom:2.5rem;padding-bottom:1.75rem;border-bottom:2px solid #e2e8f0}.section-header h3{color:#1e293b;font-size:1.625rem;margin-bottom:.625rem;font-weight:600;letter-spacing:-.02em}.section-subtitle{color:#64748b;font-size:1rem;margin-bottom:1rem}.section-progress{color:#3b82f6;font-weight:600;font-size:.9375rem}.exam-questions{display:flex;flex-direction:column;gap:1.5rem}.exam-question-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:6px;padding:1.5rem;transition:all .2s}.exam-question-card:hover{border-color:#cbd5e1;box-shadow:0 1px 3px #0000000d}.exam-question-card .question-header{display:flex;align-items:center;gap:.625rem;margin-bottom:1rem}.exam-question-card .question-number{color:#64748b;font-weight:600;font-size:.8125rem;text-transform:uppercase;letter-spacing:.05em;margin:0;display:flex;align-items:center;gap:.5rem}.answered-check{color:#059669;font-size:.75rem;font-weight:500}.exam-question-card .question-prompt{font-size:1.125rem;color:#1e293b;margin-bottom:1.25rem;font-weight:500}.exam-question-card .answer-input{margin-bottom:1rem}.exam-question-card .answer-input input{width:100%;padding:.875rem 1rem;font-size:1rem;border:1px solid #cbd5e1;border-radius:6px;font-family:SF Mono,Monaco,Inconsolata,Fira Code,monospace;transition:all .2s;background:#ffffff;color:#1e293b}.exam-question-card .answer-input input.answered{border-color:#3b82f6;background:#ffffff}.exam-question-card .answer-input input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.exam-question-card .question-hint{background:#fffbeb;border-left:3px solid #fbbf24;padding:.875rem 1rem;border-radius:4px;color:#92400e;font-size:.875rem;line-height:1.5}.module-exam .french-character-picker,.unit-exam .french-character-picker,.exam-question-card .french-character-picker,.code-editor .french-character-picker{margin-top:.5rem;padding:.75rem;background:rgba(59,130,246,.04);border-radius:6px;border:1px solid rgba(59,130,246,.15)}.module-exam .character-picker-label,.unit-exam .character-picker-label,.exam-question-card .character-picker-label,.code-editor .character-picker-label{color:#6f7a8a;font-size:.75rem;margin-bottom:.5rem;font-weight:500}.module-exam .character-btn,.unit-exam .character-btn,.exam-question-card .character-btn,.code-editor .character-btn{min-width:2.5rem;height:2.5rem;padding:.5rem;background:#ffffff;border:1px solid #cbd5e1;border-radius:6px;font-size:1.125rem;cursor:pointer;transition:all .2s ease;color:#454c55;font-weight:400}.module-exam .character-btn:hover,.unit-exam .character-btn:hover,.exam-question-card .character-btn:hover,.code-editor .character-btn:hover{background:#3b82f6;color:#fff;border-color:#3b82f6;transform:translateY(-1px);box-shadow:0 2px 8px #3b82f640}.module-exam .character-btn:active,.unit-exam .character-btn:active,.exam-question-card .character-btn:active,.code-editor .character-btn:active{transform:translateY(0);box-shadow:0 1px 4px #3b82f633}.module-exam .character-btn:focus,.unit-exam .character-btn:focus,.exam-question-card .character-btn:focus,.code-editor .character-btn:focus{outline:2px solid #3b82f6;outline-offset:2px}.section-results{background:#ffffff;border-radius:6px;padding:1.5rem;margin-bottom:1.75rem;border:1px solid #e2e8f0}.section-results-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem;padding-bottom:1rem;border-bottom:2px solid #e2e8f0}.section-results-header h5{color:#1e293b;font-size:1.1875rem;font-weight:600;margin:0}.section-score{color:#3b82f6;font-weight:700;font-size:1.125rem}.section-results .exam-item{margin-bottom:.875rem}@media (max-width: 968px){.module-exam,.unit-exam{padding:1.5rem .75rem 6rem;margin:2rem auto}.exam-header{margin-bottom:2rem}.exam-header h2{font-size:1.5rem}.exam-question{padding:1.5rem 1rem}.exam-section{padding:1.75rem 1.25rem;margin:2rem 0}.section-header{margin-bottom:2rem;padding-bottom:1.5rem}.section-header h3{font-size:1.5rem}.exam-navigation{padding:1rem;flex-wrap:wrap}.exam-nav-center{order:-1;width:100%;margin-bottom:.75rem;text-align:center}.completion-stats{gap:1.5rem}.exam-actions{flex-direction:column}.completion-celebration{padding:2rem}.section-indicators{flex-wrap:wrap;gap:.625rem}.section-indicator{padding:.625rem 1rem;font-size:.875rem}.exam-question-card{padding:1.25rem 1rem}}@media (max-width: 768px){.module-exam,.unit-exam{padding:1rem .5rem 5rem;margin:1rem auto}.exam-header{margin-bottom:1.5rem}.exam-header h2{font-size:1.375rem}.exam-header p{font-size:.9375rem}.exam-description{font-size:1rem;margin-bottom:1.5rem}.exam-progress-bar{max-width:100%}.exam-overall-progress{margin:1.5rem 0}.section-indicators{margin-top:1.5rem;gap:.5rem}.section-indicator{padding:.5rem .875rem;font-size:.8125rem}.exam-section{padding:1.5rem .75rem;margin:1.5rem 0}.section-header{margin-bottom:1.75rem;padding-bottom:1.25rem}.section-header h3{font-size:1.25rem}.section-subtitle{font-size:.9375rem}.exam-questions{gap:1.25rem}.exam-question{padding:1.25rem .75rem}.exam-question-card{padding:1rem .75rem}.exam-question-card .question-prompt{font-size:1rem;margin-bottom:1rem}.exam-question-card .answer-input input{padding:.75rem .875rem;font-size:.9375rem}.question-english{font-size:1.25rem;margin-bottom:1.5rem}.answer-input input{padding:.875rem 1rem;font-size:1rem}.exam-navigation{padding:.875rem .75rem;gap:.625rem;flex-direction:column}.exam-nav-center{order:-1;width:100%;margin-bottom:0;font-size:.8125rem}.exam-navigation>button{width:100%}.btn-submit,.btn-large{padding:.875rem 1.25rem;font-size:.9375rem}.completion-stats{flex-direction:row;justify-content:space-around;gap:.75rem}.stat-number{font-size:2rem}.stat-label{font-size:.8125rem}.completion-celebration{padding:1.75rem 1.25rem}.completion-celebration h2{font-size:1.75rem}.completion-celebration>p{font-size:1.0625rem}.exam-results{padding:1.5rem .75rem;margin:1.5rem auto}.exam-results-header{margin-bottom:2rem}.exam-results-header h2{font-size:1.5rem}.score{font-size:3rem}.exam-passed,.exam-failed{padding:2rem 1.25rem}.exam-message h3{font-size:1.25rem}.exam-message p{font-size:1rem}.exam-item{padding:1rem}.french-character-picker{padding:.625rem}.character-btn{min-width:2.25rem;height:2.25rem;font-size:1rem}}@media (max-width: 640px){.module-exam,.unit-exam{padding:.75rem .25rem 5rem;margin:.75rem auto}.exam-header{margin-bottom:1.25rem}.exam-header h2{font-size:1.25rem;margin-bottom:.625rem}.exam-header p{font-size:.875rem;margin-bottom:1rem}.exam-description{font-size:.9375rem;margin-bottom:1.25rem}.exam-overall-progress{margin:1.25rem 0}.exam-overall-progress .progress-text{font-size:.875rem}.section-indicators{margin-top:1.25rem;gap:.375rem}.section-indicator{padding:.5rem .75rem;font-size:.75rem}.exam-section{padding:1.25rem .5rem;margin:1.25rem 0}.section-header{margin-bottom:1.5rem;padding-bottom:1rem}.section-header h3{font-size:1.125rem;margin-bottom:.5rem}.section-subtitle{font-size:.875rem;margin-bottom:.875rem}.section-progress{font-size:.875rem}.exam-questions{gap:1rem}.exam-question{padding:1rem .5rem;margin-bottom:1rem}.exam-question-card{padding:.875rem .5rem}.exam-question-card .question-number{font-size:.75rem}.exam-question-card .question-prompt,.question-english{font-size:1.0625rem;margin-bottom:1.25rem}.question-prompt{font-size:1rem}.exam-question-card .answer-input input,.answer-input input{padding:.75rem .875rem;font-size:.9375rem}.question-hint,.exam-question-card .question-hint{padding:.75rem .875rem;font-size:.8125rem}.exam-navigation{padding:.75rem .5rem;gap:.625rem;flex-direction:column}.exam-nav-center{order:-1;width:100%;margin-bottom:0;font-size:.75rem}.answered-indicator,.unanswered-indicator{font-size:.75rem}.exam-navigation>button{width:100%}.btn-submit,.btn-large{padding:.75rem 1rem;font-size:.875rem}.completion-celebration{padding:1.5rem .75rem}.completion-celebration h2{font-size:1.5rem;margin-bottom:1rem}.completion-celebration>p{font-size:1rem;margin-bottom:2rem}.completion-stats{flex-direction:row;gap:.5rem}.stat-number{font-size:1.75rem;margin-bottom:.5rem}.stat-label{font-size:.75rem}.exam-actions{gap:.75rem;margin-top:2rem}.exam-actions button{width:100%}.exam-results{padding:1rem .5rem;margin:1rem auto}.exam-results-header{margin-bottom:1.75rem}.exam-results-header h2{font-size:1.375rem;margin-bottom:1rem}.score{font-size:2.5rem}.exam-passed,.exam-failed{padding:1.75rem 1rem;margin-bottom:2rem}.exam-message h3{font-size:1.125rem;margin-bottom:1rem}.exam-message p{font-size:.9375rem}.exam-breakdown{margin-top:2rem}.exam-breakdown h4{font-size:1.125rem;margin-bottom:1rem}.exam-item{padding:.875rem;margin-bottom:.875rem}.exam-item-header{margin-bottom:.625rem}.exam-item-number,.exam-item-prompt,.exam-item-details{font-size:.875rem}.exam-item-correct,.exam-item-warning{font-size:.8125rem}.section-results{padding:1.25rem;margin-bottom:1.5rem}.section-results-header{margin-bottom:1rem;padding-bottom:.875rem}.section-results-header h5{font-size:1.0625rem}.section-score{font-size:1rem}.french-character-picker{padding:.5rem}.character-picker-label{font-size:.6875rem}.character-btn{min-width:2rem;height:2rem;font-size:.9375rem;padding:.375rem}.exam-warning{padding:.875rem;font-size:.875rem}.ready-for-exam{padding:1.5rem 1.25rem;margin-bottom:2rem}.exam-ready-message{font-size:1.0625rem;margin-bottom:1rem}}.btn-retry-discrete{background:transparent;border:none;color:#665665;font-size:.875rem;font-weight:400;padding:.5rem 0;margin-top:1rem;cursor:pointer;transition:opacity .15s ease;text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;letter-spacing:-.01em}.btn-retry-discrete:hover{opacity:.7;text-decoration:none}.btn-retry-discrete:focus{outline:2px solid #3b82f6;outline-offset:2px;border-radius:4px}.intro-container{max-width:1000px;margin:0 auto;padding:1rem}.intro-skip{text-align:right;margin-bottom:1.25rem}.concept-intro{background:#ffffff;border-radius:12px;padding:3rem;box-shadow:none;border:none}.intro-header{text-align:center;margin-bottom:3rem;padding-bottom:3rem;border-bottom:1px solid #f0f0f0}.module-prefix{color:#999;font-size:.875rem;font-weight:500;margin-bottom:.75rem;text-transform:uppercase;letter-spacing:.05em}.intro-header h2{color:#1a1a1a;font-size:2rem;margin-bottom:1rem;font-weight:600;letter-spacing:-.04em}.intro-description{color:#665665;font-size:1.0625rem;line-height:1.7;max-width:700px;margin:0 auto}.intro-content{display:flex;flex-direction:column;gap:3rem}.intro-section{background:transparent;border-radius:0;overflow:visible;border:none}.intro-section-header{background:transparent;color:#1a1a1a;padding:0 0 1rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:opacity .15s;border-bottom:none}.intro-section-header:hover{opacity:.7}.intro-section-header h3{margin:0;font-size:1.25rem;font-weight:600;letter-spacing:-.03em}.intro-section-header .toggle-btn{background:transparent;color:#999;border:none;padding:.5rem .75rem;border-radius:6px;font-size:.9375rem;cursor:pointer;transition:all .15s}.intro-section-header .toggle-btn:hover{background:#f7f9fc;color:#665665}.vocab-intro-table{padding:1.5rem 0 0}.vocab-intro-table table{width:100%;border-collapse:collapse;background:transparent;border-radius:0;overflow:visible;border:none}.vocab-intro-table th{background:transparent;color:#665665;padding:0 1.25rem 1rem .75rem;text-align:left;font-weight:500;font-size:.875rem;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid #f0f0f0}.vocab-intro-table td{padding:1.25rem 1.25rem 1.25rem .75rem;border-bottom:1px solid #f0f0f0}.vocab-intro-table tbody tr:last-child td{border-bottom:none}.vocab-intro-table tbody tr{transition:background-color .15s;border-radius:4px}.vocab-intro-table tbody tr.vocab-row-clickable{cursor:pointer}.vocab-intro-table tbody tr:hover{background:#fafbfc}.vocab-intro-table tbody tr.vocab-row-clickable:hover .speak-btn{background:rgba(59,130,246,.1);color:#3b82f6;transform:scale(1.05)}.vocab-french-intro{color:#2563eb;font-weight:600;font-size:1.0625rem}.vocab-french-intro.feminine{color:#ec4899}.vocab-french-intro.masculine{color:#2563eb}.vocab-with-audio{display:flex;align-items:center;gap:.75rem}.vocab-english-intro{color:#1a1a1a;font-size:1rem}.vocab-note-intro{color:#999;font-size:.9375rem;font-style:italic}.concepts-intro-grid{padding:1.5rem 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:2rem}.concept-intro-card{background:#fafbfc;border-radius:8px;border:none;overflow:hidden;transition:all .15s ease;display:flex;flex-direction:column;position:relative}.concept-intro-card:hover{background:#f7f9fc}.concept-intro-card.understood{background:#f7f9fc;border:1px solid rgba(22,163,74,.2)}.concept-intro-card.understood:hover{background:#fafbfc}.concept-card-header{background:transparent;padding:1.5rem 1.5rem .5rem;border-bottom:none;display:flex;justify-content:space-between;align-items:flex-start}.concept-intro-card h4{color:#1a1a1a;margin:0;font-size:1.0625rem;font-weight:600;letter-spacing:-.02em;flex:1}.concept-check{color:#15803d;background:rgba(59,246,96,.1);border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;margin-left:1rem;flex-shrink:0;position:absolute;top:1.5rem;right:1.5rem}.concept-card-body{padding:.5rem 1.5rem 1.5rem;flex:1;display:flex;flex-direction:column;gap:1.5rem}.concept-intro-definition{color:#665665;line-height:1.7;font-size:.9375rem;margin:0}.concept-intro-example{background:#ffffff;padding:1rem 1.25rem;border-radius:6px;border-left:none;margin-top:auto}.concept-intro-example strong{color:#999;font-weight:500;display:block;margin-bottom:.75rem;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em}.concept-intro-example code{color:#1a1a1a;font-weight:400;font-family:inherit;display:block;font-size:.9375rem;line-height:1.8;white-space:pre-wrap;font-style:italic}.concept-intro-card h4:has-text("⚠️"),.concept-intro-card h4:contains("⚠️"){color:#dc2626}.concept-intro-example code{font-style:normal}.understood-btn{background:transparent;border:1px solid #e0e0e0;color:#665665;padding:.375rem .75rem;border-radius:8px;font-size:.75rem;font-weight:600;cursor:pointer;transition:all .15s ease;margin-top:1rem;align-self:flex-end}.understood-btn:hover{border-color:#15803d;color:#15803d;background:#f7f9fc}.understood-btn.understood{background:rgba(59,246,96,.1);border-color:#76ba8f;color:#15803d}.understood-btn.understood:hover{background:rgba(59,246,96,.291);border-color:#15803d}.concepts-header-content{display:flex;flex-direction:column;align-items:flex-start;gap:.25rem}.concepts-progress{color:#665665;font-size:.875rem;font-weight:500}.learning-tip{padding:2rem 0 .5rem;background:transparent}.learning-tip ol{color:#1a1a1a;margin-left:1.5rem;margin-bottom:1.5rem;counter-reset:item;list-style:none}.learning-tip li{margin:1.25rem 0;line-height:1.7;font-size:1rem;counter-increment:item;position:relative;padding-left:.5rem}.learning-tip li:before{content:counter(item) ".";position:absolute;left:-1.5rem;font-weight:600;color:#665665}.learning-tip strong{color:#1a1a1a;font-weight:600}.tip-note{background:#fafbfc;padding:1.25rem 1.5rem;border-radius:8px;color:#665665;margin-top:1.5rem;border-left:none;line-height:1.7;font-size:.9375rem}.tip-note strong{color:#1a1a1a}.intro-actions{margin-top:3rem;padding-top:3rem;border-top:1px solid #f0f0f0;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}.intro-actions .btn-large{font-size:1rem;font-weight:600;padding:1rem 2rem;border-radius:10px;box-shadow:none;transition:all .15s ease;letter-spacing:-.01em}.intro-actions .btn-large:hover{opacity:.9}.btn-help-link{background:none;border:none;color:#665665;font-size:.9375rem;cursor:pointer;padding:.5rem 1rem;text-decoration:underline;text-underline-offset:2px;transition:color .15s}.btn-help-link:hover{color:#1a1a1a}@media (max-width: 968px){.intro-container{padding:.5rem .25rem}.concept-intro{padding:2rem .75rem}.intro-header{margin-bottom:2rem;padding-bottom:2rem}.intro-header h2{font-size:1.75rem}.intro-content{gap:2.5rem}.concepts-intro-grid{grid-template-columns:1fr;gap:1.5rem}.vocab-intro-table{overflow-x:auto}.vocab-intro-table th,.vocab-intro-table td{padding-right:1rem}.learning-tip{padding:1.5rem 0 0}.intro-actions{margin-top:2rem;padding-top:2rem}}@media (max-width: 768px){.intro-container{padding:.5rem .25rem}.concept-intro{padding:1.5rem .5rem}.intro-header{margin-bottom:1.5rem;padding-bottom:1.5rem}.intro-header h2{font-size:1.5rem}.intro-description{font-size:1rem}.intro-content{gap:2rem}.concepts-intro-grid{gap:1rem}.concept-card-header{padding:1.25rem 1rem .5rem}.concept-card-body{padding:.5rem 1rem 1.25rem;gap:1.25rem}.concept-check{width:28px;height:28px;top:1.25rem;right:1rem}.vocab-intro-table th,.vocab-intro-table td{padding-left:.5rem;padding-right:.75rem}.learning-tip{padding:1.25rem 0 0}.intro-actions{margin-top:1.5rem;padding-top:1.5rem}}@media (max-width: 640px){.intro-container{padding:.25rem}.concept-intro{padding:1.25rem .25rem}.intro-header{margin-bottom:1.25rem;padding-bottom:1.25rem}.intro-header h2{font-size:1.375rem}.intro-description{font-size:.9375rem}.intro-content{gap:1.5rem}.concepts-intro-grid{gap:.75rem}.concept-card-header{padding:1rem .75rem .5rem}.concept-card-body{padding:.5rem .75rem 1rem;gap:1rem}.concept-check{width:24px;height:24px;top:1rem;right:.75rem}.concept-intro-card h4{font-size:1rem}.concept-intro-definition{font-size:.875rem}.concept-intro-example{padding:.875rem .75rem}.concept-intro-example code{font-size:.875rem}.vocab-intro-table th,.vocab-intro-table td{padding:.875rem .5rem .875rem .375rem}.vocab-french-intro{font-size:1rem}.vocab-english-intro{font-size:.9375rem}.vocab-note-intro{font-size:.875rem}.learning-tip{padding:1rem 0 0}.learning-tip li{margin:1rem 0;font-size:.9375rem}.tip-note{padding:1rem;font-size:.875rem}.intro-actions{margin-top:1.25rem;padding-top:1.25rem}.intro-actions .btn-large{font-size:.9375rem;padding:.875rem 1.5rem}}.reading-module-layout{padding:0;background:#ffffff}.reading-exercise-container{background:#ffffff;padding-bottom:6rem}.reading-article-wrapper{max-width:720px;margin:0 auto;padding:4rem 2.5rem 3.5rem;background:#ffffff;border-bottom:1px solid #e2e8f0}.reading-quiz-section{max-width:900px;margin:0 auto;padding:3.5rem 2.5rem;background:#f8fafc}.reading-passage{background:transparent;margin-bottom:0}.passage-header{margin-bottom:3.5rem;text-align:left;padding-bottom:2.5rem}.passage-meta{color:#64748b;font-size:.8125rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;margin-bottom:1rem;cursor:default}.passage-header h1{color:#1e293b;margin:0 0 2.5rem;font-size:2.75rem;font-weight:700;line-height:1.15;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,sans-serif;letter-spacing:-.03em;cursor:default}.btn-translation{background:#ffffff;color:#64748b;border:1px solid #e2e8f0;padding:.625rem 1.25rem;border-radius:6px;cursor:pointer;font-size:.875rem;font-weight:500;transition:all .15s}.btn-translation:hover{background:#f8fafc;border-color:#cbd5e1;color:#1e293b}.passage-content{margin-bottom:3.5rem}.passage-audio-header{display:flex;align-items:center;gap:.75rem;padding-bottom:1.5rem;border-bottom:1px solid #e2e8f0}.audio-label{color:#64748b;font-size:.875rem;font-weight:500;cursor:default}.passage-french{margin-bottom:3rem}.paragraph-block{margin:2.25rem 0;cursor:default}.paragraph-with-audio{position:relative;padding-right:3rem;transition:background-color .2s;border-radius:4px}.paragraph-with-audio:hover{background-color:#3b82f608}.paragraph-audio-btn{position:absolute;top:.5rem;right:.5rem;opacity:0;transition:opacity .2s ease;pointer-events:none}.paragraph-with-audio:hover .paragraph-audio-btn{opacity:1;pointer-events:all}.french-text{font-family:Charter,Georgia,Cambria,Times New Roman,serif;font-size:1.25rem;line-height:1.8;color:#1e293b;font-weight:400;margin:0 0 1rem;letter-spacing:-.011em;cursor:default}.speaker-label{color:#1e293b;font-weight:700;font-size:1.0625rem;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;cursor:default}.english-translation{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:1rem;line-height:1.7;color:#64748b;font-weight:400;margin:0;font-style:italic;padding-left:1.5rem;border-left:2px solid #e2e8f0;cursor:default}.interactive-word{position:relative;cursor:help;padding:0 1px;border-radius:2px;transition:background-color .15s}.interactive-word:hover{background-color:#3b82f61a;border-radius:3px}.missing-translation{background-color:#ef44441a;border-bottom:1px dotted #ef4444;cursor:help}.word-tooltip{position:absolute;bottom:100%;left:50%;transform:translate(-50%);background:#1e293b;color:#fff;padding:.5rem .875rem;border-radius:6px;font-size:.8125rem;white-space:nowrap;margin-bottom:.5rem;z-index:10;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-weight:500;box-shadow:0 2px 4px #0000001a}.word-tooltip:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:5px solid transparent;border-top-color:#1e293b}.wiki-tooltip{white-space:normal;min-width:280px;max-width:320px;padding:0;background:#ffffff;border:1px solid #e2e8f0;box-shadow:0 8px 24px #00000026;left:50%;transform:translate(-50%)}.wiki-tooltip:after{border-top-color:#fff;left:50%;transform:translate(-50%)}.wiki-content{display:flex;flex-direction:column;gap:0}.wiki-image{width:100%;height:140px;object-fit:cover;border-radius:5px 5px 0 0;display:block}.wiki-text{padding:1rem 1.25rem 1.125rem;color:#1a1a1a}.wiki-text strong{display:block;font-size:.9375rem;font-weight:600;color:#1a1a1a;margin-bottom:.5rem;letter-spacing:-.01em}.wiki-text p{font-size:.8125rem;line-height:1.5;color:#665665;margin:0 0 .75rem;font-weight:400}.wiki-link{display:inline-flex;align-items:center;gap:.375rem;font-size:.8125rem;color:#3b82f6;text-decoration:none;font-weight:500;transition:color .15s}.wiki-link:hover{color:#2563eb}.paragraph-image{margin:2.5rem 0;text-align:center}.reading-image{max-width:100%;height:auto;border-radius:12px;filter:drop-shadow(0 4px 12px rgba(0,0,0,.1));transition:filter .2s}.reading-image:hover{filter:drop-shadow(0 6px 16px rgba(0,0,0,.15))}.passage-instructions{background:#fffbeb;border-left:3px solid #fbbf24;padding:1.25rem 1.5rem;color:#78350f;font-size:.9375rem;margin-top:1.75rem;margin-bottom:2.5rem;line-height:1.7;border-radius:6px;cursor:default}.passage-instructions strong{color:#92400e;font-weight:600}.reading-quiz-section .exercise-header{margin-bottom:1.75rem}.reading-quiz-section .exercise-instruction{background:#ffffff;border:1px solid #e2e8f0;border-radius:6px;padding:1.5rem}.reading-quiz-section .code-editor{max-width:600px}@media (max-width: 768px){.reading-article-wrapper{padding:2.5rem 1rem 2rem}.reading-quiz-section{padding:2rem 1rem}.passage-header{margin-bottom:2.5rem;padding-bottom:2rem}.passage-header h1{font-size:2rem;margin-bottom:2rem}.passage-meta{font-size:.75rem}.french-text{font-size:1.125rem;line-height:1.7}.paragraph-block{margin:1.75rem 0}.english-translation{font-size:.9375rem;padding-left:1rem}.passage-audio-header{padding-bottom:1.25rem}}@media (max-width: 640px){.reading-article-wrapper{padding:1.5rem .75rem;order:0!important}.reading-quiz-section{padding:1.5rem .75rem;order:1!important}.passage-header{margin-bottom:2rem;padding-bottom:1.5rem}.passage-header h1{font-size:1.75rem;margin-bottom:1.5rem;line-height:1.2}.passage-meta{font-size:.6875rem;margin-bottom:.875rem}.btn-translation{padding:.5rem 1rem;font-size:.8125rem}.passage-content{margin-bottom:2.5rem}.french-text{font-size:1.0625rem;line-height:1.65;margin-bottom:.875rem}.speaker-label{font-size:1rem}.paragraph-block{margin:1.5rem 0}.paragraph-with-audio{padding-right:2.5rem}.paragraph-audio-btn{top:.25rem;right:.25rem}.english-translation{font-size:.875rem;line-height:1.6;padding-left:.875rem;margin-top:.625rem}.passage-audio-header{padding-bottom:1rem;gap:.625rem}.audio-label{font-size:.8125rem}.passage-instructions{padding:1rem;font-size:.875rem;margin-top:1.5rem;margin-bottom:2rem}.paragraph-image{margin:2rem 0}.word-tooltip{font-size:.75rem;padding:.375rem .75rem;margin-bottom:.375rem}.wiki-tooltip{min-width:min(280px,90vw);max-width:min(340px,90vw);box-shadow:0 12px 32px #0000002e;padding:0;overflow:hidden;left:calc(50% + var(--tooltip-shift, 0px));transform:translate(-50%)}.wiki-tooltip:after{left:calc(50% + var(--arrow-shift, 0px))}.reading-article-wrapper{padding-left:1rem;padding-right:1rem;overflow-x:clip}.french-text{overflow:visible}.wiki-image{height:160px;border-radius:0;margin:0;display:block}.wiki-text{padding:.875rem 1rem}.wiki-text strong{font-size:.9375rem;margin-bottom:.375rem;letter-spacing:-.015em}.wiki-text p{font-size:.8125rem;line-height:1.5;margin-bottom:.625rem;color:#665665}.wiki-link{font-size:.8125rem}.reading-quiz-section .exercise-header{margin-bottom:1.5rem}.reading-quiz-section .exercise-instruction{padding:1.25rem 1rem;font-size:.875rem}.reading-exercise-container{padding-bottom:5rem}}@media (max-width: 400px){.wiki-tooltip{min-width:280px;max-width:min(320px,94vw);padding:0;overflow:hidden;left:calc(50% + var(--tooltip-shift, 0px))}.wiki-tooltip:after{left:calc(50% + var(--arrow-shift, 0px))}.wiki-image{height:140px;border-radius:0;margin:0;display:block}.wiki-text{padding:.75rem .875rem}.wiki-text strong{font-size:.875rem}.wiki-text p,.wiki-link{font-size:.75rem}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.48);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:10000;padding:1rem;animation:fadeIn .15s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:#ffffff;border-radius:16px;box-shadow:0 24px 80px #0003;max-width:640px;width:100%;max-height:90vh;display:flex;flex-direction:column;animation:slideUp .25s ease}@keyframes slideUp{0%{transform:translateY(30px) scale(.98);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}.module-complete-modal .modal-header{text-align:center;padding:3rem 3rem 2rem;border-bottom:none;background:#ffffff;flex-shrink:0;position:relative}.modal-close-btn{position:absolute;top:1.5rem;left:1.5rem;background:transparent;border:none;color:#999;font-size:1.5rem;cursor:pointer;padding:.5rem;transition:all .15s ease;line-height:1;border-radius:6px;width:36px;height:36px;display:flex;align-items:center;justify-content:center}.modal-close-btn:hover{background:#f7f9fc;color:#1a1a1a}.reset-exercises-link{position:absolute;top:3.5rem;right:3rem;background:none;border:none;color:#999;font-size:.75rem;cursor:pointer;padding:0;transition:color .15s ease;font-weight:400}.reset-exercises-link:hover{color:#3b82f6}.modal-header h2{font-size:2rem;margin:0;font-weight:600;color:#1a1a1a;letter-spacing:-.04em}.modal-body{padding:0 3rem 3rem;background:#ffffff;overflow-y:auto;flex:1;min-height:0}.completion-stats{display:flex;justify-content:center;gap:2rem;margin-bottom:3rem;padding-bottom:3rem;border-bottom:1px solid #f0f0f0}.stat-card{background:transparent;padding:0;border-radius:0;text-align:center;border:none;transition:all .15s ease}.stat-card:hover{opacity:.7}.stat-icon{font-size:2rem;margin-bottom:.75rem;opacity:.8}.stat-value{font-size:2.5rem;font-weight:300;color:#1a1a1a;margin-bottom:.5rem;letter-spacing:-.04em;line-height:1;white-space:nowrap}.stat-label{font-size:.875rem;color:#665665;font-weight:500;text-transform:capitalize;letter-spacing:0}.summary-section{margin-bottom:3rem}.summary-section:last-child{margin-bottom:0}.summary-section h3{font-size:1.25rem;color:#1a1a1a;margin-bottom:1.5rem;font-weight:600;display:flex;align-items:center;gap:.5rem;letter-spacing:-.03em}.summary-section h4{font-size:1.125rem;font-weight:500;color:#1a1a1a;letter-spacing:-.03em;margin-bottom:1rem}.concepts-grid{display:grid;gap:1rem}.concept-summary-card{background:#fafbfc;padding:1.25rem 1.5rem;border-radius:8px;border:none;transition:all .15s ease}.concept-summary-card:hover{background:#f7f9fc}.concept-term{font-weight:600;color:#1a1a1a;font-size:.9375rem;margin-bottom:.5rem;letter-spacing:-.015em}.concept-definition{color:#665665;font-size:.875rem;line-height:1.6}.vocabulary-grid{display:flex;flex-direction:column;gap:.75rem}.vocabulary-summary-item{display:flex;align-items:baseline;gap:.75rem;padding:.875rem 0;background:transparent;border-radius:0;border:none;border-bottom:1px solid #f0f0f0;transition:background-color .15s ease}.vocabulary-summary-item:last-child{border-bottom:none}.vocabulary-summary-item:hover{background:#fafbfc}.vocab-french{font-weight:600;color:#1a1a1a;font-size:1rem;letter-spacing:-.015em;min-width:120px}.vocab-arrow{color:#ccc;font-size:.875rem;flex-shrink:0}.vocab-english{color:#665665;font-size:.9375rem;line-height:1.6}.modal-footer{padding:2rem 3rem 3rem;display:flex;gap:.75rem;flex-direction:column;background:#ffffff;border-top:1px solid #f0f0f0;flex-shrink:0}.modal-footer .btn-primary{width:100%;justify-content:center;font-size:1rem;font-weight:600;padding:1rem 1.5rem;border-radius:10px;letter-spacing:-.01em}.modal-footer .btn-secondary{width:100%;justify-content:center;font-size:.9375rem;font-weight:500;padding:.875rem 1.5rem;background:transparent;color:#665665;border:none;border-radius:10px}.modal-footer .btn-secondary:hover{background:#f7f9fc;color:#1a1a1a}@media (max-width: 640px){.modal-overlay{padding:0}.modal-content{max-height:100vh;border-radius:0;height:100vh}.module-complete-modal .modal-header{padding:1rem 1rem .75rem;padding-top:calc(1rem + env(safe-area-inset-top))}.modal-close-btn{top:1rem;left:1rem;width:32px;height:32px;font-size:1.25rem}.reset-exercises-link{top:1.5rem;right:1rem;font-size:.6875rem}.modal-header h2,.modal-header h3{font-size:1.25rem}.modal-body{padding:0 1rem 1.5rem}.completion-stats{display:flex;flex-direction:row;justify-content:space-around;gap:.5rem;margin-bottom:1.5rem;padding-bottom:1.5rem}.stat-card{flex:1;min-width:0}.stat-icon{font-size:1.125rem;margin-bottom:.375rem}.stat-value{font-size:1.375rem;margin-bottom:.25rem}.stat-label{font-size:.6875rem}.summary-section{margin-bottom:1.5rem}.summary-section h3,.summary-section h4{font-size:1rem;margin-bottom:.875rem}.concept-summary-card{padding:.875rem 1rem}.concept-term{font-size:.875rem;margin-bottom:.375rem}.concept-definition{font-size:.8125rem}.vocabulary-summary-item{padding:.75rem 0;gap:.625rem}.vocab-french{min-width:90px;font-size:.875rem}.vocab-english{font-size:.8125rem}.modal-footer{padding:1.25rem 1rem;padding-bottom:calc(1.25rem + env(safe-area-inset-bottom));gap:.625rem}.modal-footer .btn-primary{padding:.875rem 1.25rem;font-size:.9375rem}.modal-footer .btn-secondary{padding:.75rem 1rem;font-size:.875rem}}.modal-body::-webkit-scrollbar{width:6px}.modal-body::-webkit-scrollbar-track{background:transparent}.modal-body::-webkit-scrollbar-thumb{background:#dddddd;border-radius:3px}.modal-body::-webkit-scrollbar-thumb:hover{background:#bbbbbb}.left-nav{position:fixed;left:0;top:60px;bottom:0;width:320px;background:#ffffff;border-right:1px solid #e2e8f0;display:flex;flex-direction:column;z-index:90;overflow:hidden;transition:width .2s ease}.left-nav.collapsed{width:64px}.nav-collapsed-content{display:flex;flex-direction:column;padding:1rem 0;gap:.5rem;overflow-y:auto}.nav-expand-btn{margin:0 .375rem .5rem}.nav-collapsed-unit{display:flex;flex-direction:column;align-items:center;padding:.75rem .5rem;cursor:pointer;transition:background .15s;border-radius:6px;margin:0 .375rem}.nav-collapsed-unit:hover{background:#f8fafc}.collapsed-unit-icon{font-size:1.5rem;margin-bottom:.25rem}.collapsed-unit-progress{font-size:.625rem;color:#94a3b8;font-weight:600;line-height:1}.nav-search{padding:1rem;border-bottom:1px solid #e2e8f0;background:#ffffff;display:flex;align-items:center;gap:.5rem;flex-shrink:0}.search-input-wrapper{flex:1;position:relative;display:flex;align-items:center}.search-icon{position:absolute;left:.75rem;font-size:.875rem;opacity:.5}.search-input{width:100%;padding:.5rem 2rem .5rem 2.25rem;border:1px solid #e2e8f0;border-radius:6px;font-size:.875rem;background:#f8fafc;transition:all .2s}.search-input:focus{outline:none;border-color:#3b82f6;background:#ffffff}.search-clear{position:absolute;right:.5rem;background:none;border:none;color:#94a3b8;cursor:pointer;padding:.25rem;font-size:.75rem;opacity:.6;transition:opacity .2s}.search-clear:hover{opacity:1}.nav-collapse-btn{display:flex;align-items:center;justify-content:center;padding:.5rem;background:transparent;border:1px solid #e2e8f0;border-radius:6px;color:#64748b;cursor:pointer;transition:all .2s;flex-shrink:0}.nav-collapse-btn:hover{background:#f1f5f9;color:#1e293b;border-color:#cbd5e1}.nav-collapse-btn:active{background:#e2e8f0;transform:scale(.95)}.nav-tabs{display:flex;gap:.5rem;padding:.75rem;background:#f8fafc;border-bottom:1px solid #e2e8f0;flex-shrink:0}.nav-tab{flex:1;padding:.625rem 1rem;background:transparent;border:none;border-radius:6px;cursor:pointer;font-size:.875rem;color:#64748b;transition:all .2s;font-weight:500}.nav-tab:hover:not(.active){background:#e2e8f0;color:#1e293b}.nav-tab.active{background:#ffffff;color:#3b82f6;box-shadow:0 1px 3px #00000014,0 1px 2px #0000000a}.nav-content{flex:1;overflow-y:auto;overflow-x:hidden}.nav-tree{padding:.5rem 0}.nav-unit{margin-bottom:.5rem}.nav-unit-header{display:flex;align-items:center;gap:.5rem;padding:.625rem 1rem;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background .15s;position:sticky;top:0;background:#ffffff;z-index:10;border-bottom:1px solid transparent}.nav-unit-header:hover{background:#f8fafc}.nav-unit-header.sticky{border-bottom-color:#e2e8f0;box-shadow:0 1px 3px #0000000d}.nav-unit-icon{font-size:1rem;flex-shrink:0}.nav-unit-title{flex:1;font-size:.8125rem;font-weight:300;color:#1e293b;text-transform:uppercase;letter-spacing:.025em}.nav-unit-chevron{color:#94a3b8;transition:transform .2s;flex-shrink:0}.nav-unit-chevron.collapsed{transform:rotate(-90deg)}.nav-unit-lessons{padding-left:.5rem}.nav-lesson{padding:.625rem 1rem .625rem 2rem;cursor:pointer;transition:all .15s;border-left:2px solid transparent;margin-bottom:1px}.nav-lesson:hover{background:#f8fafc;border-left-color:#cbd5e1}.nav-lesson.active{background:#eff6ff;border-left-color:#3b82f6}.nav-lesson.complete{opacity:.7}.nav-lesson-main{display:flex;align-items:center;gap:.5rem}.nav-lesson-number{font-size:.75rem;color:#94a3b8;font-weight:600;min-width:1.5rem}.nav-lesson.active .nav-lesson-number{color:#3b82f6}.nav-lesson-exam-icon{display:flex;align-items:center;justify-content:center;color:#f59e0b;min-width:1.5rem}.nav-lesson.active .nav-lesson-exam-icon{color:#f59e0b}.nav-lesson-exam-icon svg{stroke-width:2}.nav-lesson-reading-icon{display:flex;align-items:center;justify-content:center;color:#3b82f6;min-width:1.5rem}.nav-lesson.active .nav-lesson-reading-icon{color:#3b82f6}.nav-lesson-reading-icon svg{stroke-width:2}.nav-lesson-practice-icon{display:flex;align-items:center;justify-content:center;color:#8b5cf6;min-width:1.5rem}.nav-lesson.active .nav-lesson-practice-icon{color:#8b5cf6}.nav-lesson-practice-icon svg{stroke-width:2}.nav-lesson-title{flex:1;font-size:.875rem;color:#475569;line-height:1.4}.nav-lesson.active .nav-lesson-title{color:#1e293b;font-weight:500}.nav-lesson-check{color:#10b981;font-size:.875rem}.nav-lesson-progress{margin-top:.375rem;margin-left:2rem;height:2px;background:#e2e8f0;border-radius:1px;overflow:hidden}.nav-lesson-progress-bar{height:100%;background:#3b82f6;transition:width .3s}.nav-vocab{padding:.5rem}.nav-vocab-item{padding:.75rem;margin-bottom:.5rem;background:#f8fafc;border-radius:6px;border:1px solid #e2e8f0}.nav-vocab-word{display:flex;justify-content:space-between;align-items:center;gap:.5rem;margin-bottom:.5rem;cursor:pointer;padding:.25rem;margin:-.25rem -.25rem .5rem;border-radius:4px;transition:background .15s}.nav-vocab-word:hover{background:rgba(59,130,246,.05)}.nav-vocab-text{display:flex;flex-direction:column;gap:.25rem;flex:1}.nav-vocab-french{font-size:.9375rem;font-weight:600;color:#1e293b}.gender-masculine{color:#2563eb;font-weight:600}.gender-feminine{color:#ec4899;font-weight:600}.gender-separator{color:#666;font-weight:400}.nav-vocab-english{font-size:.8125rem;color:#64748b}.nav-vocab-speaker{flex-shrink:0}.nav-vocab-lessons{display:flex;flex-wrap:wrap;gap:.375rem}.nav-vocab-lesson-link{padding:.25rem .5rem;background:#ffffff;border:1px solid #e2e8f0;border-radius:4px;font-size:.75rem;color:#3b82f6;cursor:pointer;transition:all .15s}.nav-vocab-lesson-link:hover{background:#3b82f6;color:#fff;border-color:#3b82f6}.nav-empty{padding:2rem 1rem;text-align:center;color:#94a3b8;font-size:.875rem}.nav-overlay{display:none}@media (max-width: 768px){.nav-overlay{display:block;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.4);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:89;animation:fadeIn .2s ease;touch-action:none}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.left-nav{width:85vw;max-width:380px;transform:translate(-100%);transition:transform .2s ease;box-shadow:2px 0 8px #0000001a;top:60px;overflow-y:auto;-webkit-overflow-scrolling:touch;touch-action:pan-y}.left-nav.open{transform:translate(0)}.nav-collapse-btn{display:none!important}.mobile-close-btn{position:absolute;top:.75rem;right:.75rem;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:#64748b;font-size:1.5rem;width:32px;height:32px;cursor:pointer;z-index:20;border-radius:6px;transition:all .15s;line-height:1;padding:0}.mobile-close-btn:hover{background:#f1f5f9;color:#1e293b}.nav-search{padding:.75rem 3rem .75rem .75rem;gap:.375rem}.search-input{padding:.5rem 1.75rem .5rem 2rem;font-size:.8125rem}.search-icon{left:.625rem;font-size:.8125rem}.nav-content{overflow-y:auto;-webkit-overflow-scrolling:touch;touch-action:pan-y}.nav-tabs{padding:.75rem;gap:.5rem}.nav-tab{padding:.625rem .875rem;font-size:.875rem}.nav-unit{margin-bottom:.375rem}.nav-unit-header{padding:.75rem 1rem;gap:.5rem}.nav-unit-icon{font-size:1rem}.nav-unit-title{font-size:.8125rem}.nav-unit-lessons{padding-left:.5rem}.nav-lesson{padding:.75rem 1rem .75rem 2rem;margin-bottom:1px}.nav-lesson-number{font-size:.75rem;min-width:1.5rem}.nav-lesson-title{font-size:.875rem;line-height:1.35}.nav-lesson-check{font-size:.875rem}.nav-lesson-progress{margin-top:.375rem;margin-left:2rem}.nav-lesson-exam-icon,.nav-lesson-reading-icon,.nav-lesson-practice-icon{min-width:1.25rem}.nav-lesson-exam-icon svg,.nav-lesson-reading-icon svg,.nav-lesson-practice-icon svg{width:14px;height:14px}.nav-vocab{padding:.5rem}.nav-vocab-item{padding:.75rem;margin-bottom:.5rem}.nav-vocab-word{margin-bottom:.5rem;padding:.25rem}.nav-vocab-french{font-size:.9375rem}.nav-vocab-english{font-size:.8125rem}.nav-vocab-lessons{gap:.375rem}.nav-vocab-lesson-link{padding:.375rem .5rem;font-size:.75rem}.nav-empty{padding:1.5rem .75rem;font-size:.8125rem}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f8fafc;min-height:100vh;color:#1e293b}.app{display:flex;flex-direction:column;min-height:100vh}.app-header{background:#ffffff;padding:0 1.5rem;border-bottom:1px solid #e2e8f0;position:fixed;top:0;left:0;right:0;height:60px;z-index:100;box-shadow:0 1px 3px #0000000d;display:flex;align-items:center}.app-header h1{font-size:1.25rem;color:#1e293b;font-weight:600;letter-spacing:-.025em}.mobile-menu-btn{display:none;background:none;border:none;font-size:1.5rem;color:#1e293b;cursor:pointer;padding:.5rem;margin-right:1rem;border-radius:4px;transition:background-color .2s}.mobile-menu-btn:hover{background-color:#f1f5f9}@media (max-width: 768px){.mobile-menu-btn{display:block}}.main-content-wrapper,.lesson-content-wrapper{position:relative;min-height:100%;animation:fadeInContent .2s ease-out}@keyframes fadeInContent{0%{opacity:0}to{opacity:1}}.feedback-fab{position:fixed;bottom:2rem;right:2rem;width:56px;height:56px;border-radius:50%;background:#60a5fa;color:#fff;border:none;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 12px #60a5fa4d;transition:all .15s ease;z-index:200;display:flex;align-items:center;justify-content:center;-webkit-user-select:none;user-select:none}.feedback-fab:hover{background:#3b82f6;box-shadow:0 6px 16px #60a5fa66;transform:translateY(-2px)}.feedback-fab:active{transform:translateY(0);box-shadow:0 2px 8px #60a5fa4d}@media (max-width: 768px){.feedback-fab{bottom:1.5rem;right:1.5rem;width:52px;height:52px;font-size:1.25rem}}.admin-btn{position:fixed;bottom:2rem;right:calc(2rem + 70px);width:56px;height:56px;border-radius:50%;background:#10b981;color:#fff;border:none;font-size:1.25rem;cursor:pointer;box-shadow:0 4px 12px #10b9814d;transition:all .15s ease;z-index:200;display:flex;align-items:center;justify-content:center;-webkit-user-select:none;user-select:none}.admin-btn:hover{background:#059669;box-shadow:0 6px 16px #10b98166;transform:translateY(-2px)}.admin-btn:active{transform:translateY(0);box-shadow:0 2px 8px #10b9814d}.admin-badge{position:absolute;top:-4px;right:-4px;background:#ef4444;color:#fff;font-size:.75rem;font-weight:700;min-width:20px;height:20px;border-radius:10px;display:flex;align-items:center;justify-content:center;padding:0 6px;box-shadow:0 2px 4px #0003}.admin-close-btn{position:fixed;top:1rem;left:1rem;background:#6b7280;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .15s ease;z-index:300}.admin-close-btn:hover{background:#4b5563}@media (max-width: 768px){.admin-btn{bottom:1.5rem;right:calc(1.5rem + 60px);width:52px;height:52px;font-size:1rem}}.app-main{flex:1;margin-left:320px;padding:.5rem;padding-top:calc(.5rem + 60px);min-height:calc(100vh - 60px);transition:margin-left .2s ease}body:has(.left-nav.collapsed) .app-main{margin-left:64px}.app-footer{background:#ffffff;color:#94a3b8;padding:1.5rem;text-align:center;font-size:.875rem;border-top:1px solid #e2e8f0;margin-left:320px;transition:margin-left .2s ease}body:has(.left-nav.collapsed) .app-footer{margin-left:64px}.welcome-screen{max-width:700px;margin:6rem auto 4rem;text-align:center;display:flex;flex-direction:column;align-items:center}.welcome-icon{font-size:4rem;margin-bottom:1.5rem;opacity:.9}.welcome-screen h2{font-size:2rem;margin-bottom:.75rem;color:#1e293b;font-weight:600;letter-spacing:-.025em}.welcome-subtitle{font-size:1.0625rem;color:#64748b;margin-bottom:3rem;line-height:1.6}.welcome-actions{display:flex;flex-direction:column;gap:1rem;margin-bottom:3rem;width:100%}.welcome-tip{display:flex;align-items:center;gap:1rem;padding:1rem 1.5rem;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;font-size:.9375rem;color:#475569;text-align:left}.tip-icon{display:flex;align-items:center;justify-content:center;min-width:2rem;height:2rem;background:#ffffff;border:1px solid #e2e8f0;border-radius:6px;font-size:.875rem;color:#64748b;font-weight:500}.welcome-stats{display:flex;gap:1.5rem;justify-content:center;width:100%}.stat-card{background:#ffffff;border:1px solid #e2e8f0;border-radius:10px;padding:1.5rem 2rem;display:flex;flex-direction:column;align-items:center;gap:.5rem;flex:1;max-width:160px;box-shadow:0 1px 2px #0000000d}.stat-number{font-size:2.5rem;font-weight:700;color:#3b82f6;line-height:1}.stat-label{font-size:.8125rem;color:#64748b;text-transform:uppercase;letter-spacing:.05em;font-weight:500}.error-screen{max-width:600px;margin:4rem auto;text-align:center;padding:2rem;background:#fef2f2;border:1px solid #fecaca;border-radius:12px}.error-screen h2{color:#dc2626;margin-bottom:1rem}.error-screen p{color:#991b1b}.lesson-list-header{text-align:left;margin-bottom:3rem;padding-bottom:0;border-bottom:none;padding:2rem}@media (max-width: 768px){.lesson-list-header{padding:1rem .5rem;margin-bottom:2rem}}@media (max-width: 640px){.lesson-list-header{padding:.75rem .25rem;margin-bottom:1.5rem}}.lesson-list-header h2{font-size:2rem;margin-bottom:.5rem;font-weight:600;letter-spacing:-.03em;color:#222}.lesson-list-header p{color:#717171;font-size:1rem;font-weight:400;line-height:1.5;max-width:none;margin:0}.lessons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:2rem}.lesson-card{background:#ffffff;border-radius:12px;padding:2rem;cursor:pointer;transition:all .2s ease;border:none;box-shadow:0 1px 2px #0000000a;display:flex;flex-direction:column}.lesson-card:hover{box-shadow:0 6px 16px #0000001f;transform:translateY(-1px)}.lesson-card.complete{background:#ffffff;box-shadow:0 1px 2px #10b98114}.lesson-card-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:.75rem}.lesson-card-header h3{color:#222;font-size:1rem;font-weight:600;flex:1;line-height:1.3;letter-spacing:-.01em}.lesson-exam-icon{color:#f59e0b;flex-shrink:0;margin-right:1rem;stroke-width:2}.lesson-reading-icon{color:#3b82f6;flex-shrink:0;margin-right:1rem;stroke-width:2}.lesson-practice-icon{color:#8b5cf6;flex-shrink:0;margin-right:1rem;stroke-width:2}.badge-complete{color:#10b981;font-size:1.125rem;font-weight:400}.lesson-description{color:#717171;margin-bottom:1.25rem;line-height:1.5;font-size:.875rem;min-height:2.625rem}.lesson-stats{margin-bottom:1.5rem;margin-top:auto}.progress-bar{height:2px;background:#ebebeb;border-radius:1px;overflow:hidden;margin-bottom:.5rem}.progress-fill{height:100%;background:#222222;transition:width .3s}.progress-text{font-size:.8125rem;color:#b0b0b0;font-weight:400}.lesson-concepts{padding-top:1rem;border-top:1px solid #ebebeb;margin-top:auto}.lesson-concepts strong{color:#b0b0b0;font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;display:block;margin-bottom:.5rem}.lesson-concepts ul{list-style:none;margin:0}.lesson-concepts li{color:#717171;font-size:.8125rem;padding:.25rem 0;line-height:1.4;font-weight:400}.lesson-concepts li:before{content:"·";color:#ddd;margin-right:.375rem}.lesson-list-header-content{display:flex;justify-content:space-between;align-items:flex-start;gap:2rem}.view-toggle{display:flex;gap:.5rem;background:#fafbfc;padding:.25rem;border-radius:10px;flex-shrink:0}.view-toggle-btn{background:transparent;border:none;padding:.625rem .75rem;border-radius:8px;cursor:pointer;color:#665665;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.view-toggle-btn:hover{background:rgba(59,130,246,.08);color:#3b82f6}.view-toggle-btn.active{background:#ffffff;color:#1a1a1a;box-shadow:0 1px 3px #00000014}.reference-modules-btn{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;background:#3b82f6;color:#fff;border:none;border-radius:8px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .15s ease;letter-spacing:-.01em;flex-shrink:0}.reference-modules-btn:hover{background:#2563eb;transform:translateY(-1px);box-shadow:0 4px 12px #3b82f64d}.split-view-container{display:flex;gap:2rem;min-height:600px}.split-view-list{flex:0 0 380px;background:#ffffff;border-radius:12px;overflow-y:auto;box-shadow:0 1px 2px #0000000a;max-height:calc(100vh - 300px)}.split-view-detail{flex:1;background:#ffffff;border-radius:12px;border:1px solid #f0f0f0;box-shadow:0 1px 2px #0000000a;overflow-y:auto;max-height:calc(100vh - 300px)}.split-unit-section{border-bottom:1px solid #f0f0f0}.split-unit-section:last-child{border-bottom:none}.split-unit-header{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;background:#fafbfc;border-bottom:1px solid #f0f0f0;position:sticky;top:0;z-index:10}.split-unit-icon{font-size:1.125rem;line-height:1}.split-unit-title{flex:1;font-size:.875rem;font-weight:600;color:#1a1a1a;text-transform:uppercase;letter-spacing:.025em}.split-unit-count{font-size:.8125rem;color:#999;font-weight:500}.split-lesson-item{padding:1rem 1.25rem;cursor:pointer;transition:all .15s ease;border-left:3px solid transparent}.split-lesson-item:hover{background:#fafbfc}.split-lesson-item.selected{background:#f7f9fc;border-left-color:#3b82f6}.split-lesson-item.complete{opacity:.65;padding:.75rem 1.25rem}.split-lesson-item.complete .split-lesson-title{font-size:.875rem}.split-lesson-item.complete .split-lesson-icon{width:14px;height:14px}.split-lesson-header{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.split-lesson-item.complete .split-lesson-header{margin-bottom:.375rem}.split-lesson-number{font-size:.75rem;color:#999;font-weight:600;min-width:1.5rem;text-align:center}.split-lesson-icon{flex-shrink:0;stroke-width:2}.split-lesson-icon.exam{color:#f59e0b}.split-lesson-icon.reading{color:#3b82f6}.split-lesson-icon.practice{color:#8b5cf6}.split-lesson-title{flex:1;font-size:.9375rem;color:#1a1a1a;font-weight:500;line-height:1.3;letter-spacing:-.01em}.split-lesson-check{color:#10b981;font-size:.9375rem}.split-lesson-progress-bar{height:2px;background:#f0f0f0;border-radius:1px;overflow:hidden;margin-left:2.25rem;transition:opacity .15s ease}.split-lesson-progress-fill{height:100%;background:#1a1a1a;transition:width .3s ease}.split-lesson-item.complete .split-lesson-progress-bar{height:1.5px;opacity:.5}.split-unit-show-completed{width:100%;padding:.75rem 1.25rem;background:transparent;border:none;border-top:1px solid #f0f0f0;font-size:.8125rem;color:#3b82f6;cursor:pointer;transition:all .15s ease;text-align:left;font-weight:500}.split-unit-show-completed:hover{background:#fafbfc;color:#2563eb}.split-detail-content{padding:2rem 2.5rem}.split-detail-empty{display:flex;align-items:center;justify-content:center;height:100%;min-height:400px}.split-detail-empty p{color:#999;font-size:.9375rem}.split-detail-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem}.split-detail-icon{flex-shrink:0;stroke-width:2}.split-detail-icon.exam{color:#f59e0b}.split-detail-icon.reading{color:#3b82f6}.split-detail-icon.practice{color:#8b5cf6}.split-detail-header h2{flex:1;font-size:1.5rem;font-weight:400;color:#1a1a1a;letter-spacing:-.02em;margin:0}.split-detail-badge{color:#10b981;font-size:1rem;font-weight:400}.split-detail-description{color:#665665;font-size:1rem;line-height:1.6;margin-bottom:1.5rem}.split-detail-action-row{display:flex;align-items:center;justify-content:space-between;gap:2rem;margin-bottom:1rem}.split-detail-stats-inline{display:flex;gap:2rem;flex:1}.split-stat-inline{display:flex;align-items:baseline;gap:.5rem}.split-stat-value-inline{font-size:1.5rem;font-weight:300;color:#1a1a1a;letter-spacing:-.025em;line-height:1}.split-stat-label-inline{font-size:.8125rem;color:#999;font-weight:500;text-transform:uppercase;letter-spacing:.05em}.split-detail-progress{margin-bottom:2rem}.split-detail-progress-bar{height:4px;background:#f0f0f0;border-radius:2px;overflow:hidden}.split-detail-progress-fill{height:100%;background:#1a1a1a;transition:width .3s ease}.split-detail-concepts{margin-bottom:0;padding:1.25rem;background:#fafbfc;border-radius:8px}.split-detail-concepts h3{font-size:.8125rem;font-weight:600;color:#665665;text-transform:uppercase;letter-spacing:.05em;margin:0 0 .875rem}.split-detail-concepts ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.75rem}.split-detail-concepts li{color:#1a1a1a;font-size:.9375rem;line-height:1.5}.split-detail-concepts li strong{font-weight:600;color:#1a1a1a}.split-detail-start-btn{padding:.75rem 1.5rem;background:#3b82f6;color:#fff;border:none;border-radius:8px;font-size:.9375rem;font-weight:600;letter-spacing:-.01em;cursor:pointer;transition:all .15s ease;white-space:nowrap;flex-shrink:0}.split-detail-start-btn:hover{background:#2563eb;transform:translateY(-1px);box-shadow:0 2px 8px #3b82f633}.split-detail-start-btn:active{transform:translateY(0)}@media (max-width: 1024px){.split-view-container{flex-direction:column;gap:2rem}.split-view-list{flex:1;max-height:400px}.split-view-detail{flex:1;max-height:none}.split-detail-content{padding:1.75rem 2rem}}@media (max-width: 768px){.lesson-list-header-content{flex-direction:column;gap:1.5rem}.view-toggle{width:100%}.view-toggle-btn{flex:1}.reference-modules-btn{width:100%;justify-content:center}.split-view-list{max-height:350px}.split-detail-content{padding:1.5rem}.split-detail-action-row{flex-direction:column;align-items:stretch;gap:1.25rem}.split-detail-stats-inline{gap:1.5rem}.split-stat-value-inline{font-size:1.25rem}.split-detail-start-btn{width:100%;padding:.75rem 1.25rem}.unit-header-accordion{margin:0;margin-bottom:1rem;padding:.75rem .5rem}}.lesson-view{background:#ffffff;border-radius:8px;overflow:hidden;box-shadow:0 1px 3px #0000001a;animation:slideUpFadeIn .25s ease-out}.lesson-view:has(.phonics-view){overflow:visible;box-shadow:none;background:transparent}@keyframes slideUpFadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.lesson-view:has(.reading-module-layout){box-shadow:none;border-radius:0}.lesson-header{background:#ffffff;color:#1e293b;padding:.5rem 2rem;display:flex;align-items:center;gap:1.5rem;border-bottom:1px solid #e2e8f0}.lesson-header-mobile{display:none;background:#ffffff;color:#1e293b;padding:1rem;border-bottom:1px solid #e2e8f0;align-items:center;gap:1rem}.btn-back-mobile{background:#ffffff;border:1px solid #e2e8f0;color:#64748b;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-size:.875rem;transition:all .2s;font-weight:500}.btn-back-mobile:hover{background:#f8fafc;color:#1e293b;border-color:#cbd5e1}.lesson-title-mobile{flex:1}.lesson-title-mobile h2{font-size:1.125rem;font-weight:600;color:#1e293b;margin:0;letter-spacing:-.025em}.btn-back{background:#ffffff;border:1px solid #e2e8f0;color:#64748b;padding:.625rem 1.25rem;border-radius:6px;cursor:pointer;font-size:.9375rem;transition:all .2s;font-weight:500}.btn-back:hover{background:#f8fafc;color:#1e293b;border-color:#cbd5e1}.lesson-title-container{flex:1;display:flex;align-items:center;gap:.75rem}.unit-badge{display:inline-flex;align-items:center;gap:.375rem;padding:.375rem .75rem;border-radius:6px;font-size:.8125rem;font-weight:500;background:transparent;border:1px solid;white-space:nowrap;letter-spacing:-.01em}.lesson-header h2{flex:1;font-size:.875rem;font-weight:600;letter-spacing:-.015em;color:#1e293b;margin:0}.lesson-title-desktop{display:block}.lesson-title-compact{display:none}@media (max-width: 1280px){.lesson-title-desktop{display:none}.lesson-title-compact{display:block}}.btn-reset-module{display:flex;align-items:center;gap:.375rem;background:transparent;border:1px solid #e2e8f0;color:#64748b;padding:.5rem .875rem;border-radius:6px;cursor:pointer;font-size:.8125rem;font-weight:500;transition:all .2s}.btn-reset-module:hover{background:#f8fafc;border-color:#cbd5e1;color:#475569}.btn-reset-module:disabled{opacity:.5;cursor:not-allowed}.exercise-progress{background:#f8fafc;color:#64748b;padding:.625rem 1.25rem;border-radius:6px;font-size:.9375rem;font-weight:500}.lesson-content{display:grid;grid-template-columns:1fr 300px;gap:0;min-height:600px}.left-pane{overflow-y:auto;max-height:100vh}.right-pane{background:#ffffff;border-left:1px solid #ebebeb;overflow-y:auto;max-height:100vh;padding:0rem}.concept-pane{padding:0}.concept-pane-header{margin-bottom:1.5rem;margin-top:1.5rem}.concept-pane h3{color:#222;margin-bottom:.25rem;font-size:.875rem;font-weight:600;letter-spacing:-.01em;text-transform:uppercase;letter-spacing:.05em;font-size:.6875rem;color:#b0b0b0}.concepts-progress{color:#665665;font-size:.75rem;font-weight:500}.concept-item{background:#fafbfc;padding:1.25rem;border-radius:8px;margin-bottom:.75rem;border:none;transition:all .15s;position:relative}.concept-item:hover{background:#f7f9fc}.concept-item.understood{background:#f7f9fc;border:1px solid #e0e0e0}.concept-item.understood:hover{background:#fafbfc}.concept-item-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.5rem}.concept-item h4{color:#222;margin:0;font-size:.875rem;font-weight:600;letter-spacing:-.01em;flex:1}.concept-item .concept-check{color:#3b82f6;background:rgba(59,130,246,.1);border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;margin-left:.75rem;flex-shrink:0}.concept-item .understood-btn{background:transparent;border:1px solid #e0e0e0;color:#665665;padding:.375rem .75rem;border-radius:8px;font-size:.75rem;font-weight:600;cursor:pointer;transition:all .15s ease;margin-top:.75rem;align-self:flex-end}.concept-item .understood-btn:hover{border-color:#3b82f6;color:#3b82f6;background:#f7f9fc}.concept-item .understood-btn.understood{background:#3b82f6;border-color:#3b82f6;color:#fff}.concept-item .understood-btn.understood:hover{background:#2563eb;border-color:#2563eb}.concept-definition{color:#717171;font-size:.8125rem;margin-bottom:.75rem;line-height:1.5}.concept-example{margin-top:.75rem;padding-top:.75rem;border-top:1px solid #ebebeb}.concept-example strong{color:#b0b0b0;font-weight:600;display:block;margin-bottom:.5rem;font-size:.625rem;text-transform:uppercase;letter-spacing:.08em}.concept-example code{display:block;background:transparent;padding:0;color:#717171;font-family:inherit;font-size:.8125rem;line-height:1.6;font-weight:400;font-style:italic}.exercise-pane{padding:3rem 3rem 6rem;display:flex;flex-direction:column;max-width:900px;margin:0 auto}.exercise-header{display:flex;flex-direction:row;justify-content:space-between;align-items:center;margin-bottom:2.5rem}.exercise-header-left{display:flex;align-items:center}.btn-back-to-lesson{background:transparent;color:#665665;border:none;padding:.5rem 1rem;border-radius:8px;cursor:pointer;font-size:.875rem;font-weight:500;transition:all .15s;display:inline-flex;align-items:center;gap:.375rem}.btn-back-to-lesson:hover{background:#fafbfc;color:#1a1a1a}.exercise-title-row{display:flex;align-items:center;gap:1rem}.exercise-header h3{color:#1a1a1a;font-size:1.5rem;font-weight:600;letter-spacing:-.03em}.badge-done{background:#f0fdf4;color:#059669;padding:.5rem 1rem;border-radius:20px;font-size:.875rem;font-weight:500;border:none}.exercise-instruction{background:#fafbfc;padding:1.5rem 2rem;border-radius:8px;margin-bottom:2.5rem;border:none}.exercise-instruction p{margin:.75rem 0;color:#1a1a1a;font-size:1rem;line-height:1.7}.exercise-instruction p:first-child{margin-top:0}.exercise-instruction p:last-child{margin-bottom:0}.code-editor{border:1px solid #f0f0f0;border-radius:8px;overflow:hidden;margin-bottom:1.5rem}.editor-header{background:#fafbfc;color:#1a1a1a;padding:.875rem 1.25rem;display:flex;justify-content:space-between;align-items:center;font-size:.875rem;font-family:SF Mono,Monaco,Inconsolata,Fira Code,monospace;border-bottom:1px solid #f0f0f0;transition:background-color .15s ease}.editor-header.success{background:#f0fdf4;border-bottom-color:#d1fae5}.editor-header.error{background:#fef2f2;border-bottom-color:#fecaca}.editor-language{color:#999;flex:1;text-align:center;font-weight:500;margin-left:10px}.editor-shortcut{color:#999;font-size:.8125rem;font-weight:500;padding:.375rem .625rem;border-radius:6px;background:#ffffff;border:1px solid #f0f0f0}.keyboard-help{display:inline-block;width:16px;height:16px;margin-left:6px;background:#e0e0e0;color:#666;border-radius:50%;text-align:center;line-height:16px;font-size:11px;font-weight:700;cursor:help;transition:background-color .2s ease}.keyboard-help:hover{background:#d0d0d0;color:#333}.editor-status{font-size:.8125rem;font-weight:600;padding:.5rem .875rem;border-radius:6px;display:inline-flex;align-items:center;gap:.375rem;animation:slideIn .2s ease}.editor-status-success{background:#d1fae5;color:#059669}.editor-status-error{background:#fee2e2;color:#dc2626}@keyframes slideIn{0%{opacity:0;transform:translate(10px)}to{opacity:1;transform:translate(0)}}.code-input{width:100%;min-height:160px;padding:1.5rem;border:none;font-family:SF Mono,Monaco,Inconsolata,Fira Code,monospace;font-size:1rem;resize:vertical;background:#ffffff;color:#1a1a1a;line-height:1.6}.code-input:focus{outline:none;background:#ffffff}.exercise-actions{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.left-actions{display:flex;gap:.75rem;align-items:center}.action-buttons{display:flex;gap:.75rem}button{padding:.75rem 1.5rem;border:none;border-radius:8px;font-size:.9375rem;cursor:pointer;font-weight:500;transition:all .15s}.btn-primary{background:#3b82f6;color:#fff;display:flex;align-items:center;gap:.5rem;font-weight:600}.btn-primary:hover{opacity:.9}.keyboard-shortcut{font-size:.75rem;font-weight:500;padding:.125rem .5rem;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.25);border-radius:4px;font-family:ui-monospace,SFMono-Regular,SF Mono,Consolas,Liberation Mono,Menlo,monospace;letter-spacing:.025em}.keyboard-shortcut-nav{font-size:.75rem;font-weight:500;margin-left:.5rem;padding:.125rem .375rem;background:rgba(59,130,246,.1);border:1px solid rgba(59,130,246,.2);border-radius:4px;color:#3b82f6}.btn-secondary{background:#f7f9fc;color:#665665;border:none}.btn-secondary:hover{background:#f0f0f0;color:#1a1a1a}.btn-hint{background:#fafbfc;color:#665665;border:none}.btn-hint:hover{background:#f7f9fc;color:#1a1a1a}button:disabled{opacity:.4;cursor:not-allowed}.hint-box{background:#fafbfc;border:none;padding:1.5rem 2rem;border-radius:8px;margin-bottom:2rem;color:#665665;font-size:.9375rem;line-height:1.7}.hint-box strong{color:#1a1a1a}.test-output{background:#fafbfc;color:#1a1a1a;padding:2rem;border-radius:8px;margin-bottom:2rem;font-family:SF Mono,Monaco,Inconsolata,Fira Code,monospace;font-size:.875rem;border:none}.output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1.25rem;border-bottom:1px solid #f0f0f0}.output-header h4{color:#1a1a1a;font-size:1rem;font-weight:600}.test-summary{display:flex;gap:1.5rem;font-size:.875rem;font-weight:500}.test-summary .success{color:#059669}.test-summary .error{color:#dc2626}.test-summary .total{color:#665665}.lint-section{margin-bottom:2rem}.lint-section h5{color:#1a1a1a;margin-bottom:1.25rem;font-size:.9375rem;font-weight:600}.lint-error{background:#fef2f2;border-left:none;padding:1.25rem 1.5rem;margin-bottom:1rem;border-radius:8px}.error-type{color:#dc2626;font-weight:600;margin-bottom:.5rem;font-size:.875rem}.error-message{color:#991b1b;margin-bottom:.75rem;line-height:1.6}.error-hint{color:#78350f;font-size:.875rem;margin-top:.625rem;line-height:1.5}.error-hint code{background:#fffbeb;padding:.25rem .5rem;border-radius:3px;color:#92400e}.lint-warning{background:#fffbeb;border-left:3px solid #f59e0b;padding:1rem;margin-bottom:.75rem;border-radius:4px}.warning-message{color:#92400e;line-height:1.5}.tests-section{margin-top:1.25rem}.tests-section h5{color:#1e293b;margin-bottom:1rem;font-size:.875rem;font-weight:600}.test-result{padding:1rem 1.125rem;margin-bottom:.75rem;border-radius:6px;border:1px solid}.test-result.pass{background:#f0fdf4;border-color:#bbf7d0;border-left:3px solid #059669}.test-result.pass-warning{background:#fef3c7;border-color:#fde68a;border-left:3px solid #f59e0b}.test-result.fail{background:#fef2f2;border-color:#fecaca;border-left:3px solid #dc2626}.test-message{color:#1e293b;line-height:1.5;font-size:.9375rem}.expected-answer{margin-top:1.25rem;padding:1rem;background:#f8fafc;border-radius:4px;color:#64748b;line-height:1.5;border:1px solid #e2e8f0}.expected-answer code{color:#1e293b;background:#ffffff;padding:.25rem .5rem;border-radius:3px;border:1px solid #e2e8f0}.success-message{background:#f0fdf4;color:#059669;padding:2rem;border-radius:8px;text-align:center;margin-bottom:2rem;border:none}.success-message h4{margin-bottom:.75rem;font-size:1.125rem;font-weight:600;color:#059669}.success-message p{color:#047857}.navigation-buttons{position:fixed;bottom:0;left:280px;right:0;display:flex;justify-content:space-between;gap:1.25rem;padding:1.25rem 2rem;background:#ffffff;border-top:2px solid #e2e8f0;box-shadow:0 -2px 10px #0000001a;z-index:1000;transition:left .2s ease}body:has(.left-nav.collapsed) .navigation-buttons{left:64px}.btn-nav{background:#3b82f6;color:#fff;padding:.75rem 1.5rem}.btn-nav:hover:not(:disabled){background:#2563eb}.unit-section{margin-bottom:4rem;padding-bottom:4rem;border-bottom:1px solid #ebebeb}.unit-section.unit-collapsed{margin-bottom:0;padding-bottom:0;border-bottom:none}.unit-section.unit-collapsed .unit-header-accordion{border:1px solid #f0f0f0;background:#ffffff;margin-bottom:1rem;padding:1rem;border-radius:10px;box-shadow:0 1px 2px #0000000a}.unit-section.unit-collapsed .unit-header-accordion:hover{background:#fafbfc;border-color:#e0e0e0;box-shadow:0 2px 4px #0000000f}.unit-section:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.unit-header{background:transparent;border-radius:0;padding:0;margin-bottom:2rem;border:none;display:flex;gap:1rem;align-items:center}.unit-header-accordion{cursor:pointer;transition:all .15s ease;padding:.75rem;margin:-.75rem -.75rem 1.25rem;border-radius:8px;border:1px solid transparent}.unit-header-accordion:hover{background:#fafbfc}.unit-section:not(.unit-collapsed) .unit-header-accordion{border-color:transparent;box-shadow:none}.unit-accordion-toggle{background:transparent;border:none;padding:.5rem;cursor:pointer;color:#665665;display:flex;align-items:center;justify-content:center;transition:all .15s ease;border-radius:6px;flex-shrink:0;margin-left:auto}.unit-accordion-toggle:hover{background:#f0f0f0;color:#1a1a1a}.unit-accordion-toggle svg{transition:transform .15s ease}.unit-collapsed-info{display:flex;align-items:center;gap:.5rem}.unit-collapsed-count{font-size:.875rem;color:#1a1a1a;font-weight:500;letter-spacing:-.01em}.unit-collapsed-separator{color:#ddd;font-size:.875rem;line-height:1}.unit-collapsed-description{font-size:.875rem;color:#999;font-weight:400;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.unit-icon{font-size:1.5rem;line-height:1;flex-shrink:0}.unit-content{flex:1;min-width:0}.unit-title-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.unit-title{color:#222;font-size:1.375rem;font-weight:600;margin:0;letter-spacing:-.02em}.unit-badge-complete{display:inline-flex;align-items:center;gap:.375rem;background:transparent;color:#10b981;font-size:.875rem;font-weight:500;letter-spacing:-.01em}.unit-badge-complete svg{flex-shrink:0}.unit-description{color:#717171;font-size:.9375rem;margin-bottom:0;line-height:1.5}.unit-progress{display:none}.lesson-card{position:relative}.lesson-card-header{flex-direction:row;align-items:center;gap:0}.lesson-card-header h3{color:#222;padding-right:0;font-size:1rem;font-weight:600;letter-spacing:-.01em}.lesson-card.module-exam{border:1px solid #3b82f6;background:#ffffff;box-shadow:0 1px 2px #3b82f61a}.lesson-card.module-exam:hover{box-shadow:0 6px 16px #3b82f626}.lesson-card.final-exam{border-left:3px solid #f59e0b;padding-left:1.875rem;background:linear-gradient(to right,#fffef7 0%,#ffffff 2rem)}.lesson-card.final-exam:hover{box-shadow:0 4px 12px #f59e0b1f;border-left-color:#d97706}.lesson-card.reading-milestone{border-left:3px solid #3b82f6;padding-left:1.875rem;background:linear-gradient(to right,#f9fbff 0%,#ffffff 2rem)}.lesson-card.reading-milestone:hover{box-shadow:0 4px 12px #3b82f61f;border-left-color:#2563eb}.lesson-card.fill-in-blank{border-left:3px solid #8b5cf6;padding-left:1.875rem;background:linear-gradient(to right,#fbfaff 0%,#ffffff 2rem)}.lesson-card.fill-in-blank:hover{box-shadow:0 4px 12px #8b5cf61f;border-left-color:#7c3aed}.lesson-card.next-lesson{position:relative}.lesson-card.next-lesson:before{content:"";position:absolute;top:1rem;right:1rem;width:6px;height:6px;background:#3b82f6;border-radius:50%;opacity:.7}.lesson-card.next-lesson:hover:before{opacity:1}@media (max-width: 768px){.app-header{left:0;padding:1rem .5rem}.header-content h1{font-size:1rem}.app-main{margin-left:0!important;padding:1rem .5rem;padding-top:calc(1rem + 60px)}.app-footer{margin-left:0!important}.navigation-buttons{left:0!important}}@media (max-width: 968px){.app-main{padding:1.5rem .5rem;padding-top:calc(1.5rem + 60px)}.lesson-content{grid-template-columns:1fr;gap:0;display:flex;flex-direction:column}.left-pane{max-height:none;overflow-y:visible;order:1}.right-pane{border-left:none;border-top:1px solid #e2e8f0;padding-bottom:.75rem;padding:0rem;max-height:none;overflow-y:visible;order:2}.concept-item{padding:1.25rem 1rem}.lessons-grid{grid-template-columns:1fr;gap:1rem}.lesson-card{padding:1.25rem .75rem}.lesson-title{font-size:1rem;line-height:1.4}.lesson-description{font-size:.8125rem;line-height:1.5}.unit-header{flex-direction:row;gap:1rem;padding:0;text-align:left;align-items:flex-start}.unit-header-accordion{padding:.5rem;margin:0;margin-bottom:1rem}.unit-title{font-size:1.125rem;line-height:1.3}.unit-content{flex:1;min-width:0}.unit-title-row{flex-direction:column;align-items:flex-start;gap:.5rem}.unit-badge-complete{font-size:.8125rem;gap:.3rem}.unit-badge-complete svg{width:14px;height:14px}.navigation-buttons{padding:1rem;flex-wrap:wrap}.welcome-screen{margin:3rem auto 2rem}.exercise-pane{padding:2rem .75rem 5.5rem}.exercise-header{margin-bottom:2rem}.exercise-header h3{font-size:1.375rem}.exercise-instruction{padding:1.25rem 1.5rem;margin-bottom:2rem}}@media (max-width: 640px){.app-main{padding:.5rem .25rem;padding-top:calc(.5rem + 60px)}.unit-section{margin-bottom:2rem;padding-bottom:2rem}.unit-header{gap:.75rem;margin-bottom:1.5rem}.unit-header-accordion{padding:.375rem;margin:0;margin-bottom:1.125rem}.unit-accordion-toggle{padding:.375rem}.unit-section.unit-collapsed{margin-bottom:0}.unit-section.unit-collapsed .unit-header-accordion{margin-bottom:.75rem;padding:.875rem}.unit-collapsed-count,.unit-collapsed-description{font-size:.8125rem}.unit-title{font-size:1rem;line-height:1.3}.unit-icon{font-size:1.25rem}.lesson-card{padding:1rem .5rem;margin-bottom:1rem}.lesson-title{font-size:.9375rem;line-height:1.3}.lesson-description{font-size:.75rem;line-height:1.4;margin-bottom:1rem}.lesson-concepts{padding-top:.75rem}.lesson-concepts strong{font-size:.625rem}.lesson-concepts li{font-size:.75rem;padding:.1875rem 0}.progress-text{font-size:.75rem}.welcome-screen{margin:2rem auto 1.5rem;padding:0 1rem}.welcome-icon{font-size:3rem}.right-pane{padding:0rem 0rem .75rem}.concept-item{padding:1rem .75rem}.navigation-buttons{left:0!important;padding:1rem .75rem;flex-direction:column;gap:.75rem;align-items:stretch}.btn-nav{width:100%;padding:.875rem 1.25rem;font-size:.9375rem;text-align:center}.lesson-header{display:none}.lesson-header-mobile{display:flex}.exercise-pane{padding:1rem .5rem 5rem}.exercise-pane>div,.reading-quiz-section{display:flex;flex-direction:column}.reading-exercise-container{display:flex;flex-direction:column}.exercise-header{margin-bottom:1.5rem;flex-direction:column;align-items:flex-start;gap:1rem;order:1!important}.exercise-header h3{font-size:1.125rem}.exercise-instruction{padding:1rem 1.25rem;margin-bottom:1.5rem;order:2!important}.exercise-instruction p{font-size:.9375rem;margin:.625rem 0}.code-editor{order:3!important;margin-bottom:1rem}.hint-box{order:4!important;padding:1rem 1.25rem;margin-bottom:.75rem;font-size:.875rem}.exercise-actions{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:1.5rem;order:5!important}.action-buttons,.left-actions{display:contents}.action-buttons .btn-primary{grid-column:1 / -1;grid-row:1}.left-actions .btn-hint{grid-column:1 / -1;grid-row:2}.left-actions .btn-secondary{grid-column:1;grid-row:3}.action-buttons .btn-secondary{grid-column:2;grid-row:3;background:transparent;color:#665665;border:1px solid #e2e8f0}.action-buttons .btn-secondary:hover{background:#f8fafc;color:#1a1a1a}.test-output{padding:1.25rem;margin-bottom:1.5rem;font-size:.8125rem;order:6!important}.success-message{order:6!important}.code-input{padding:1rem;font-size:.9375rem;min-height:140px}.editor-header{padding:.75rem 1rem;font-size:.8125rem}.keyboard-help,.editor-shortcut,.keyboard-shortcut,.keyboard-shortcut-nav{display:none!important}.editor-status{font-size:.75rem;padding:.375rem .625rem;gap:.25rem}.editor-header{justify-content:space-between}.editor-header>span:first-child{display:none}.editor-language{text-align:left;margin-left:0;font-size:.75rem;order:-1}.french-character-picker{order:3!important}}.speak-btn{background:transparent;border:none;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;justify-content:center;padding:.375rem;border-radius:6px;line-height:1;color:#64748b;flex-shrink:0}.speak-btn:hover{background:rgba(59,130,246,.1);color:#3b82f6;transform:scale(1.05)}.speak-btn:active{transform:scale(.95);background:rgba(59,130,246,.15)}.speak-btn-small{padding:.25rem;margin-left:.5rem}.speak-btn-medium{padding:.375rem;margin-left:.75rem}.speak-btn-large{padding:.5rem;margin-top:1rem}.vocab-with-audio{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.flashcard-speaker{margin-top:1.25rem;opacity:.8}.flashcard-speaker:hover{opacity:1}.passage-controls{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.auth-loading{display:flex;align-items:center;justify-content:center;height:100vh;background:#fafbfc}.loading-spinner{text-align:center;color:#1a1a1a}.loading-spinner p{color:#665665;font-size:.9375rem}.spinner{width:40px;height:40px;border:3px solid #e0e0e0;border-left:3px solid #3b82f6;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}.auth-container{height:100vh;background:transparent;display:flex;align-items:center;justify-content:center;padding:2rem;margin:0}.auth-content{background:transparent;max-width:500px}.auth-header{text-align:center;margin-bottom:2rem}.auth-header h1{font-size:2rem;font-weight:600;margin-bottom:.5rem;color:#1a1a1a;letter-spacing:-.03em}.auth-header p{color:#665665;font-size:1rem;line-height:1.6}.auth-toggle{display:flex;background:#f3f4f6;border-radius:8px;padding:4px;margin-bottom:2rem}.auth-toggle button{flex:1;padding:.75rem;border:none;background:transparent;border-radius:6px;font-weight:500;transition:all .2s;cursor:pointer;font-size:.9rem!important}.auth-toggle button.active{background:white;box-shadow:0 1px 3px #0000001a;color:#3b82f6}.auth-toggle button:not(.active){color:#6b7280}.auth-form{margin-bottom:2rem;display:flex;justify-content:center}.auth-features{padding-top:2rem;border-top:1px solid #e5e7eb}.auth-features h3{margin-bottom:1rem;color:#374151;font-size:1.1rem}.auth-features ul{list-style:none;padding:0;margin:0}.auth-features li{padding:.5rem 0;color:#6b7280;font-size:.95rem}.auth-back-link{display:block;width:100%;padding:1rem;margin-top:1.5rem;background:transparent;border:none;color:#665665;font-size:.9375rem;cursor:pointer;transition:color .15s ease}.auth-back-link:hover{color:#3b82f6}.authenticated-app{position:relative}.auth-header-bar{position:fixed;top:.45rem;right:1rem;z-index:1000;background:rgba(255,255,255,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:8px;padding:.5rem}.auth-header-bar:hover{box-shadow:0 4px 6px -1px #0000001a}@media (max-width: 768px){.auth-header-bar [class*=cl-userButtonText],.auth-header-bar [class*=cl-userButton]>div:not([class*=avatarBox]):not([class*=userButtonTrigger]){display:none!important}.auth-header-bar{padding:.375rem;right:.75rem}.auth-header-bar:hover{box-shadow:none}}@media (max-width: 640px){.auth-container{padding:1rem}.auth-content{padding:2rem 1.5rem}.auth-header h1{font-size:2rem}.auth-header-bar{padding:.25rem;right:.5rem;top:.5rem}}.offline-indicator{position:fixed;top:68px;right:1rem;z-index:1000;background:rgba(255,255,255,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:8px;box-shadow:0 4px 6px -1px #0000001a;border:1px solid #e5e7eb;font-size:.875rem}.offline-indicator.offline{background:rgba(251,146,60,.95);border-color:#f97316;color:#9a3412}.offline-indicator.online{background:rgba(34,197,94,.95);border-color:#22c55e;color:#166534}.offline-status{display:flex;align-items:center;gap:.5rem;padding:.5rem .75rem;cursor:pointer;-webkit-user-select:none;user-select:none}.status-icon{font-size:1rem}.status-text{display:flex;flex-direction:column;gap:.125rem}.pending-count{font-size:.75rem;opacity:.8}.offline-details{border-top:1px solid rgba(0,0,0,.1);padding:.75rem;background:white;border-radius:0 0 8px 8px;min-width:250px}.detail-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.detail-header h4{margin:0;font-size:.875rem;font-weight:600;color:#374151}.close-details{background:none;border:none;font-size:1.25rem;cursor:pointer;color:#6b7280;padding:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center}.close-details:hover{color:#374151}.detail-content p{margin:.5rem 0;font-size:.8125rem;color:#374151}.btn-sync{background:#3b82f6;color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;font-size:.8125rem;cursor:pointer;margin:.5rem 0;transition:background .2s}.btn-sync:hover:not(:disabled){background:#2563eb}.btn-sync:disabled{background:#9ca3af;cursor:not-allowed}.last-sync{color:#6b7280!important;font-size:.75rem!important}.offline-explanation{margin-top:.5rem;padding-top:.5rem;border-top:1px solid #e5e7eb}.offline-explanation small{color:#6b7280;line-height:1.4}.offline-indicator.online .status-icon{animation:none}.offline-indicator .status-icon:has-text("🔄"){animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 640px){.offline-indicator{top:50px;right:.5rem;font-size:.8125rem}.offline-details{min-width:200px}}.dev-mode-banner{position:fixed;top:0;left:0;right:0;z-index:10000;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;padding:.75rem 1rem;box-shadow:0 2px 8px #00000026;animation:slideDown .3s ease-out;height:52px}@keyframes slideDown{0%{transform:translateY(-100%)}to{transform:translateY(0)}}.dev-mode-content{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:1rem;font-size:.875rem}.dev-badge{background:rgba(255,255,255,.2);padding:.25rem .75rem;border-radius:12px;font-weight:600;font-size:.75rem;letter-spacing:.5px}.dev-message{flex:1;opacity:.95}.dev-close{background:rgba(255,255,255,.2);border:none;color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.25rem;transition:background .2s;padding:0;line-height:1}.dev-close:hover{background:rgba(255,255,255,.3)}.dev-mode-wrapper{padding-top:52px}.dev-mode-wrapper .app{min-height:calc(100vh - 52px)}@media (max-width: 640px){.dev-mode-banner{padding:.5rem .75rem}.dev-mode-content{font-size:.8125rem}.dev-badge{font-size:.7rem;padding:.2rem .5rem}}