.classroom-page{background-color:var(--color-bg-dark);height:100vh;color:var(--color-text-primary);flex-direction:column;display:flex;position:relative;overflow:hidden}.classroom-close-btn{color:var(--color-text-primary);z-index:50;background:var(--color-bg-surface);border:1px solid var(--color-border);cursor:pointer;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;transition:all .2s;display:flex;position:absolute;top:1rem;right:1rem;box-shadow:0 4px 6px #0000001a}.classroom-close-btn:hover{background:var(--color-bg-hover);border-color:var(--color-border-hover)}.video-player{background-color:#000;flex:1;justify-content:center;align-items:center;height:100%;display:flex;position:relative}.player-controls{color:#fff;background:linear-gradient(#0000,#000000e6);padding:2rem 1rem 4rem;position:absolute;bottom:0;left:0;right:0}.game-container,.quiz-container,.test-container,.curiosity-container,.pdf-container{flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;max-width:800px;margin:0 auto;padding:2rem;animation:.3s ease-out fadeIn;display:flex}.content-title{text-align:center;margin-bottom:2rem;font-size:1.5rem}.game-card{background:var(--color-bg-surface);border:1px solid var(--color-border);text-align:center;border-radius:1.5rem;width:100%;padding:2rem;box-shadow:0 10px 30px #0000001a}.game-question{margin-bottom:2.5rem;font-size:1.5rem;font-weight:600}.game-actions{gap:1.5rem;margin-bottom:2rem;display:flex}.game-btn{border-radius:1rem;flex-direction:column;flex:1;align-items:center;gap:.5rem;padding:2rem;font-size:1.25rem;font-weight:700;transition:all .2s;display:flex}.game-btn.true{background:var(--color-success,#22c55e);color:#022c22}.game-btn.false{background:var(--color-danger,#ef4444);color:#450a0a}.game-btn:active,.game-btn:hover{opacity:.9;transform:scale(.98)}.quiz-card{background:var(--color-bg-surface);border:1px solid var(--color-border);border-radius:1.5rem;flex-direction:column;width:100%;padding:2rem;display:flex}.quiz-title{color:var(--color-text-dim);margin-bottom:1rem;font-size:1.25rem}.quiz-progress-bar{background:var(--color-bg-secondary);border-radius:3px;height:6px;margin-bottom:2rem;overflow:hidden}.quiz-progress-bar .fill{background:var(--color-primary,#6366f1);height:100%;transition:width .3s}.quiz-question-text{margin-bottom:2rem;font-size:1.5rem;font-weight:600}.quiz-options-list{flex-direction:column;gap:1rem;display:flex}.quiz-option-btn{background:var(--color-bg-secondary);border:1px solid var(--color-border);text-align:left;color:var(--color-text-primary);border-radius:.75rem;padding:1.25rem;font-size:1.1rem;transition:all .2s}.quiz-option-btn:hover{background:var(--color-bg-hover);border-color:var(--color-primary)}.curiosity-content{text-align:center;flex-direction:column;align-items:center;gap:1.5rem;display:flex}.curiosity-icon{margin-bottom:1rem}.curiosity-facts{text-align:left;background:var(--color-bg-secondary);color:var(--color-text-primary);border-radius:1rem;margin-top:1rem;padding:2rem}.fact-item{gap:1rem;margin-bottom:1rem;font-size:1.1rem;line-height:1.6;display:flex}.fact-bullet{color:var(--color-primary,#6366f1);font-size:1.5rem;line-height:1}.pdf-header{justify-content:space-between;align-items:center;width:100%;margin-bottom:2rem;display:flex}.pdf-placeholder{background:var(--color-bg-secondary);border:2px dashed var(--color-border);width:100%;height:600px;color:var(--color-text-dim);border-radius:1rem;flex-direction:column;justify-content:center;align-items:center;gap:1rem;display:flex}.test-container{justify-content:flex-start;padding-top:4rem;overflow-y:auto}.test-header{text-align:center;margin-bottom:3rem}.questions-list{flex-direction:column;gap:3rem;width:100%;margin-bottom:4rem;display:flex}.question-item h3{margin-bottom:1rem;font-size:1.25rem}.options-grid{grid-template-columns:1fr;gap:.75rem;display:grid}.option-btn{background:var(--color-bg-surface);border:1px solid var(--color-border);color:var(--color-text-primary);text-align:left;border-radius:.5rem;padding:1rem;transition:all .2s}.option-btn.selected{border-color:var(--color-primary,#6366f1);color:#fff;background:#6366f133}.test-footer{width:100%;margin-top:2rem;padding-bottom:6rem}.test-result-container{flex:1;justify-content:center;align-items:center;width:100%;padding:1rem;display:flex}.result-card{background:var(--color-bg-surface);text-align:center;border-radius:1.5rem;flex-direction:column;align-items:center;gap:1.5rem;width:100%;max-width:360px;padding:2.5rem 1.5rem;display:flex;box-shadow:0 20px 50px #0003}.result-card.success{border-top:6px solid var(--color-success)}.result-card.failure{border-top:6px solid var(--color-danger)}.score-text{font-size:2.5rem;font-weight:700;line-height:1}.min-score-text{opacity:.7;margin-top:-.5rem;font-size:.9rem}.btn-primary,.btn-secondary{border-radius:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:all .2s}.btn-primary{background:var(--color-primary,#6366f1);color:#fff;border:none}.btn-primary:hover{filter:brightness(1.1)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--color-bg-surface);color:var(--color-text-primary);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-bg-hover)}.certificate-actions{border-top:1px solid #ffffff1a;width:100%;margin-top:2rem;padding-top:2rem}.certificate-buttons{grid-template-columns:1fr;gap:1rem;width:100%;display:grid}.cert-btn{cursor:pointer;border:none;border-radius:.75rem;justify-content:center;align-items:center;gap:.75rem;width:100%;padding:1rem 1.5rem;font-size:1rem;font-weight:600;text-decoration:none;transition:all .3s;display:flex}.cert-btn-download{color:var(--color-primary);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:linear-gradient(135deg,#6366f133,#8b5cf633);border:2px solid #6366f166}.cert-btn-download:hover{background:linear-gradient(135deg,#6366f14d,#8b5cf64d);border-color:#6366f199;transform:translateY(-2px);box-shadow:0 8px 20px #6366f14d}.cert-btn-view{background:var(--color-bg-surface);color:var(--color-primary);border:2px solid var(--color-primary);box-shadow:0 4px 15px #6366f11a}.cert-btn-view:hover{background:var(--color-bg-hover);transform:translateY(-2px);box-shadow:0 8px 25px #6366f133}.cert-btn svg{flex-shrink:0}.certificate-loading{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:.75rem;flex-direction:column;align-items:center;gap:1rem;margin-top:2rem;padding:1.5rem;display:flex}.loading-spinner{border:3px solid #6366f133;border-top-color:var(--color-primary,#6366f1);border-radius:50%;width:40px;height:40px;animation:1s linear infinite spin}.certificate-loading p{color:var(--color-text-secondary);margin:0;font-size:.95rem}@keyframes spin{to{transform:rotate(360deg)}}.btn-back{width:100%;color:var(--color-text-dim);border:1px solid var(--color-border);cursor:pointer;background:0 0;border-radius:.75rem;margin-top:1.5rem;padding:.875rem 1.5rem;font-size:.95rem;font-weight:500;transition:all .3s}.btn-back:hover{background:var(--color-bg-hover);border-color:var(--color-border-hover);color:var(--color-text-primary)}@media (min-width:640px){.certificate-buttons{grid-template-columns:1fr 1fr;gap:1.25rem}.result-card{max-width:500px;padding:3rem 2rem}.cert-btn{padding:1.125rem 1.75rem;font-size:1.05rem}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.course-modules-container{flex-direction:column;flex:1;height:100%;display:flex;overflow:hidden}.course-modules-container .module-content-area{flex:0 0 40%;order:1;min-height:0}.course-modules-container .module-navigator{border-right:none;border-top:1px solid var(--color-border);flex:0 0 60%;order:2;max-width:100%;min-height:0}.course-modules-container.content-expanded .module-content-area{flex:0 0 80%}.course-modules-container.content-expanded .module-navigator{flex:0 0 20%}.module-navigator{background:var(--color-bg-surface);flex-direction:column;width:100%;padding:1.5rem;transition:flex .3s;display:flex;overflow:hidden}.module-navigator-header{border-bottom:1px solid var(--color-border);flex-shrink:0;margin-bottom:1rem;padding-bottom:1rem}.module-navigator-title-row{justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1rem;display:flex}.module-navigator-header h2{flex:1;margin:0;font-size:1.25rem;font-weight:600;line-height:1.4}.module-progress-bar{background:var(--color-bg-secondary);border-radius:4px;height:8px;margin-bottom:.75rem;overflow:hidden}.module-progress-fill{background:var(--color-primary,#6366f1);border-radius:4px;height:100%;transition:width .3s}.module-list{flex-direction:column;flex:1;gap:.5rem;min-height:0;margin-top:-.5rem;padding-bottom:5rem;display:flex;overflow-y:auto}.module-item{background:var(--color-bg-secondary);border:1px solid var(--color-border);cursor:pointer;text-align:left;border-radius:.75rem;align-items:center;gap:1rem;width:100%;padding:1rem;transition:all .2s;display:flex}.module-item:hover:not(.locked):not(:disabled){background:var(--color-bg-hover);border-color:var(--color-border-hover)}.module-item.active{border-color:var(--color-primary,#6366f1);background:#6366f126}.module-item.completed{border-color:var(--color-success,#22c55e)}.module-item.locked{opacity:.5;cursor:not-allowed}.module-item:disabled{cursor:not-allowed;opacity:.5}.module-item-icon{color:var(--color-text-dim);flex-shrink:0}.module-item.active .module-item-icon{color:var(--color-primary,#6366f1)}.module-item.completed .module-item-icon{color:var(--color-success,#22c55e)}.module-item-content{flex-direction:column;flex:1;gap:.25rem;display:flex}.module-item-number{color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.5px;font-size:.75rem;font-weight:500}.module-item-title{color:var(--color-text-primary);font-size:.9rem;font-weight:500;line-height:1.4}.module-item.test-item{border-top:2px solid var(--color-border);margin-top:1rem;padding-top:1.5rem}.module-item.test-item.unlocked{border-color:var(--color-primary,#6366f1);background:#6366f11a}.module-content-area{flex-direction:column;flex:1;padding:2rem;transition:flex .3s;display:flex;overflow-y:auto}.module-locked{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:1rem;display:flex}.module-locked h2{margin-bottom:.5rem;font-size:1.5rem}.module-viewer{flex-direction:column;width:100%;max-width:1000px;height:100%;margin:0 auto;display:flex}.module-viewer-header{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:2rem;display:flex;position:relative}.module-viewer-header h1{flex:1;min-width:200px;font-size:1.75rem;font-weight:600}.module-viewer-actions{flex-wrap:wrap;align-items:center;gap:.75rem;display:flex}.expand-toggle-btn{background:var(--color-bg-secondary);border:1px solid var(--color-border);cursor:pointer;color:var(--color-text-primary);border-radius:.5rem;flex-direction:column;flex-shrink:0;align-items:center;gap:.25rem;min-width:50px;padding:.5rem .75rem;transition:all .2s;display:flex}.expand-toggle-btn:hover{background:var(--color-bg-hover);border-color:var(--color-border-hover)}.expand-toggle-label{color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.5px;font-size:.65rem;font-weight:500;line-height:1}.module-viewer-content{flex-direction:column;flex:1;display:flex}.video-module-wrapper{flex-direction:column;flex:1;gap:1.25rem;display:flex}.video-module{background-color:#000;border-radius:1rem;justify-content:center;align-items:center;min-height:400px;display:flex;position:relative;overflow:hidden}.video-module-complete{justify-content:center;padding:.25rem 0;display:flex}.video-module video{object-fit:contain;width:100%;height:100%}.module-completion-overlay{z-index:10;color:#fff;background:#000000e6;flex-direction:column;justify-content:center;align-items:center;gap:1rem;display:flex;position:absolute;inset:0}.module-completion-overlay h2{font-size:1.5rem;font-weight:600}.pdf-module{flex-direction:column;flex:1;gap:1.5rem;display:flex}.pdf-module-header{justify-content:flex-end;display:flex}.pdf-module-footer{border-top:1px solid var(--color-border);justify-content:center;padding-top:1.5rem;display:flex}.curiosity-module{flex:1;justify-content:center;align-items:center;display:flex}.curiosity-module .curiosity-content{width:100%;max-width:600px}.course-completed-container{flex:1;justify-content:center;align-items:center;padding:2rem;display:flex}.course-completed-card{background:var(--color-bg-surface);border:1px solid var(--color-border);text-align:center;border-radius:1.5rem;width:100%;max-width:500px;padding:3rem 2rem;box-shadow:0 10px 30px #0000001a}.course-completed-card h1{margin-bottom:.5rem;font-size:2rem;font-weight:600}.game-progress{color:var(--color-text-dim);margin-top:1.5rem;font-size:.9rem}@media (max-width:768px){.course-modules-container .module-navigator,.course-modules-container .module-content-area,.module-content-area{padding:1rem}.module-viewer-header{flex-direction:column}.module-viewer-header h1{font-size:1.5rem}.module-viewer-actions{width:100%}.module-viewer-actions button{flex:1}}@media (min-width:1024px){.module-navigator{padding:2rem}.module-content-area{padding:3rem}}