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1rem}.class-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.back-link{color:#666;font-weight:500}.back-link:hover{color:var(--color-primary)}.subject-badge{padding:4px 12px;border-radius:4px;font-size:.8rem;font-weight:700;text-transform:uppercase;color:#fff}.subject-badge.algebra{background-color:#ff6b6b}.subject-badge.calculo{background-color:#4ecdc4}.subject-badge.fisica{background-color:#ffe66d;color:#333}.detail-title{margin-bottom:30px;font-size:2rem}.detail-layout{display:grid;grid-template-columns:1fr 300px;gap:40px}.video-container{position:relative;padding-bottom:56.25%;height:0;background-color:#000;border-radius:12px;overflow:hidden;margin-bottom:30px}.video-container iframe,.video-container .no-video{position:absolute;top:0;left:0;width:100%;height:100%}.no-video{display:flex;align-items:center;justify-content:center;color:#fff}.pdf-section{background:#fff;padding:30px;border-radius:12px;box-shadow:0 2px 8px #0000000d}.pdf-section 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button{flex:1;border-radius:12px;padding:12px}.ramos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:30px}.ramo-card{background:#fff;border-radius:20px;box-shadow:0 10px 30px #0000000d;overflow:hidden;position:relative;transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;min-height:200px;height:fit-content}.ramo-delete-top{position:absolute;top:15px;right:15px;background:none;border:none;color:#cbd5e1;cursor:pointer;padding:8px;border-radius:50%;transition:all .2s ease;display:flex;align-items:center;justify-content:center;z-index:10}.ramo-delete-top:hover{background-color:#fee;color:#ef4444;transform:scale(1.1)}.ramo-card.expanded{grid-column:1 / -1}.ramo-card:hover{transform:translateY(-5px);box-shadow:0 15px 40px #0000001a}.ramo-color-strip{height:8px;width:100%}.ramo-title{padding:25px 25px 5px;font-size:1.4rem;color:var(--color-text)}.ramo-meta{padding:0 25px 25px;color:#888;font-size:.9rem}.ramo-actions{margin-top:auto;padding:20px 25px;display:flex;gap:10px;background-color:#fcfcfc;border-top:1px solid #f5f5f5}.ramo-actions button{flex:1;border-radius:10px;padding:8px 5px;font-size:.85rem}.btn-danger-outline{background:transparent;border:1px solid #ff4d4d;color:#ff4d4d}.btn-danger-outline:hover{background:#ff4d4d;color:#fff}.no-ramos{text-align:center;grid-column:1 / -1;padding:60px 20px;color:#666;background:#fff;border-radius:20px;box-shadow:0 10px 30px #0000000d}.no-ramos p{margin-bottom:10px}@media (max-width: 600px){.create-form-btns{flex-direction:column}}.ramo-inline-edit{display:flex;flex-direction:column;gap:12px;padding:25px}.inline-edit-input{width:100%;padding:8px 0;border:none;border-bottom:2px solid #f0f0f0;font-family:inherit;transition:border-color .2s;background:transparent}.inline-edit-input:focus{outline:none;border-color:var(--color-primary)}.creation-unification{margin-top:15px;border:1px solid #f1f5f9;padding:20px;border-radius:20px;background:#fdfdfd}.create-ramo-card.unification-active{max-width:900px}@media (max-width: 900px){.creation-unification{grid-template-columns:1fr}}.unification-group{margin-top:25px}.inline-edit-input.title-input{font-size:1.4rem;font-weight:800;color:var(--color-text)}.inline-edit-input.desc-input{font-size:1rem;color:#64748b;resize:none;min-height:40px}.inline-color-selector{display:flex;gap:8px;margin:5px 0}.mini-color-btn{width:22px;height:22px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:transform .2s,border-color .2s}.mini-color-btn.active{border-color:#333;transform:scale(1.2)}.inline-edit-btns{display:flex;gap:10px;margin-top:5px}.ramo-expanded-content{min-height:0;background:#fdfdfd;border-top:1px solid #f0f0f0;padding:25px;display:grid;grid-template-columns:1fr 1fr;gap:30px}@media (max-width: 850px){.ramo-expanded-content{grid-template-columns:1fr}}.ramo-classes-section h4,.ramo-add-classes-section h4{font-size:1.1rem;margin-bottom:15px;color:#444;border-bottom:2px solid #f0f0f0;padding-bottom:5px}.ramo-mini-list{max-height:380px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding-right:10px}.ramo-mini-item{display:flex;align-items:center;padding:12px 15px;background:#fff;border:1px solid #eee;border-radius:12px;transition:background .2s}.mini-info{flex:1;text-align:left;min-width:0}.mini-info h5{font-size:1rem;margin:0 0 2px;padding:0}.mini-description{font-size:.8rem;color:#888;margin:0;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis}.mini-remove{background:#fee;color:#f55;border:none;width:30px;height:30px;border-radius:50%;cursor:pointer;font-weight:700;display:flex;align-items:center;justify-content:center}.mini-remove:hover{background:#fcc}.class-lookup{margin-bottom:15px}.lookup-input{width:100%;padding:10px 15px;border:2px solid 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.2s}.btn-primary{background-color:var(--color-primary);color:var(--color-text)}.btn-primary:hover{color:#fff}.btn-secondary{background-color:var(--color-secondary);color:var(--color-text)}.btn-secondary:hover{filter:brightness(.9)}.auth-container{min-height:calc(100vh - 70px);display:flex;align-items:center;justify-content:center;padding:20px;background-color:#f0f2f5}.auth-card{background:#fff;padding:40px;border-radius:12px;box-shadow:0 4px 12px #0000001a;width:100%;max-width:500px}.auth-title{text-align:center;margin-bottom:20px;color:var(--color-text)}.auth-error{background-color:#fee;color:#c00;padding:10px;border-radius:4px;margin-bottom:20px;font-size:.9rem}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:500}.form-group input{width:100%;padding:10px;border:1px solid #ddd;border-radius:6px;font-size:1rem}.form-group input:focus{outline:none;border-color:var(--color-primary)}.auth-submit{width:100%;padding:12px;font-size:1rem;margin-top:10px}.auth-footer{margin-top:20px;text-align:center;font-size:.9rem}.auth-footer a{color:var(--color-primary-strong);font-weight:600}