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.playlist-item-thumbnail{background:#e53935}.playlist-item-info{flex-direction:column;justify-content:center;display:flex;overflow:hidden}.playlist-item-info h4{color:#111;white-space:nowrap;text-overflow:ellipsis;margin:0 0 .15rem;font-size:.85rem;font-weight:600;overflow:hidden}.playlist-item-info span{color:#6b7280;white-space:nowrap;text-overflow:ellipsis;font-size:.75rem;overflow:hidden}.student-video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));align-items:flex-start;gap:1.5rem;display:grid}.student-video-card{background:#fff;border:1px solid #e5e7eb;border-top:3px solid #e53935;border-radius:18px;flex-direction:column;transition:all .25s;display:flex;position:relative;overflow:hidden;box-shadow:0 2px 4px #00000005}.student-video-thumbnail{cursor:pointer;background:#f3f4f6;border-bottom:1px solid #e5e7eb;justify-content:center;align-items:center;height:140px;display:flex;position:relative;overflow:hidden}.play-button-overlay{color:#e53935;background:#fffffff2;border-radius:50%;justify-content:center;align-items:center;width:46px;height:46px;font-size:.95rem;transition:all .25s cubic-bezier(.4,0,.2,1);display:flex;transform:scale(.9);box-shadow:0 4px 10px #00000026}.student-video-thumbnail:hover .play-button-overlay{color:#fff;background:#e53935;transform:scale(1.1);box-shadow:0 6px 15px #e5393566}.student-video-content{flex-direction:column;flex:1;padding:1.25rem;display:flex}.student-video-course{color:#4b5563;text-transform:uppercase;letter-spacing:.03em;background:#f3f4f6;border-radius:6px;align-self:flex-start;margin-bottom:.6rem;padding:.3rem .5rem;font-size:.72rem;font-weight:700;display:inline-block}.student-video-title{color:#111;letter-spacing:-.01em;margin:0 0 .5rem;font-size:1.1rem;font-weight:700;line-height:1.4}.student-video-desc-short{color:#6b7280;-webkit-line-clamp:2;-webkit-box-orient:vertical;height:2.6rem;margin:0 0 1.25rem;font-size:.85rem;line-height:1.5;display:-webkit-box;overflow:hidden}.student-video-actions{align-items:center;gap:.75rem;margin-top:auto;display:flex}.student-watch-btn{color:#fff;cursor:pointer;background:#111;border:none;border-radius:10px;justify-content:center;align-items:center;gap:.5rem;width:100%;padding:.65rem;font-size:.9rem;font-weight:600;transition:all .2s;display:flex}.student-watch-btn:hover{background:#e53935;box-shadow:0 4px 12px #e5393540}.student-empty-state{text-align:center;color:#6b7280;background:#f9fafb;border:1px dashed #d1d5db;border-radius:18px;flex-direction:column;justify-content:center;align-items:center;padding:5rem 2rem;display:flex}.student-empty-state p{margin:1rem 0 0;font-size:.95rem;font-weight:500}.skeleton{background:#e5e7eb;border-radius:4px}.skeleton-pulse{animation:1.5s ease-in-out infinite pulse}.skeleton-title{width:180px;height:35px;margin-bottom:.5rem}.skeleton-subtitle{width:320px;height:18px}.skeleton-bar-title{width:150px;height:24px}.skeleton-select{border-radius:10px;width:220px;height:40px}.skeleton-card{pointer-events:none}.skeleton-thumbnail{background:#e5e7eb;height:170px}.skeleton-tag{width:80px;height:18px;margin-bottom:.75rem}.skeleton-card-title{width:85%;height:22px;margin-bottom:.5rem}.skeleton-meta{width:60%;height:16px;margin-bottom:1.25rem}.skeleton-btn{border-radius:10px;width:100%;height:38px}@keyframes pulse{0%{opacity:.6}50%{opacity:1}to{opacity:.6}}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@media (width<=992px){.student-active-player-section{grid-template-columns:1fr}.student-player-playlist-col{border-top:1px solid #e5e7eb;border-left:none;max-height:300px}}@media (width<=768px){.student-videos-container{padding:0 0 2rem}.student-videos-header{margin-bottom:1.5rem;padding:1.5rem 1rem 0}.student-videos-header h1{font-size:1.8rem}.student-videos-filter-bar{flex-direction:column;align-items:stretch;gap:1rem;padding:0 1rem}.student-select{width:100%}.student-video-grid{padding:0 1rem}.student-active-player-section{margin-bottom:2rem}.student-video-player-wrapper{border-radius:0}.student-player-details,.student-player-playlist-col{padding:1rem}}.student-player-top-header{grid-column:1/-1;justify-content:space-between;align-items:center;margin-bottom:.5rem;padding-bottom:.5rem;display:flex}.student-player-playing-tag{color:#e53935;text-transform:uppercase;letter-spacing:.05em;font-size:.85rem;font-weight:700}.student-close-player-btn{cursor:pointer;border-radius:20px;align-items:center;gap:.35rem;padding:.4rem 1.1rem;font-size:.8rem;font-weight:700;transition:all .2s ease-in-out;display:flex;color:#e53935!important;background:#fef2f2!important;border:1px solid #e5393533!important}.student-close-player-btn:hover{transform:scale(1.02);box-shadow:0 4px 12px #e5393533;color:#fff!important;background:#e53935!important;border-color:#e53935!important}.student-controls-middle{align-items:center;gap:1.25rem;display:flex;position:absolute;left:50%;transform:translate(-50%)}.student-play-pause-btn{cursor:pointer;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;transition:all .2s ease-in-out;display:flex;box-shadow:0 4px 12px #e5393566;color:#fff!important;opacity:1!important;background:#e53935!important;border:none!important}.student-play-pause-btn:hover{transform:scale(1.1);box-shadow:0 6px 16px #e539358c;background:#d32f2f!important}.student-skip-btn{cursor:pointer;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;transition:all .2s ease-in-out;display:flex;background:#ffffff1a!important;border:1px solid #ffffff1a!important}.student-skip-btn:hover{transform:scale(1.05);background:#ffffff40!important}.student-video-card.active{border:2px solid #e53935!important;box-shadow:0 8px 24px #e5393526!important}.student-video-card.active .play-button-overlay{color:#fff!important;background:#e53935!important;transform:scale(1)!important}