:root{--primary: #6c5ce7;--primary-hover: #5a4bd1;--primary-light: #a29bfe;--secondary: #636e72;--success: #00b894;--warning: #fdcb6e;--danger: #e17055;--info: #74b9ff;--dark: #2d3436;--darker: #1e272e;--light: #dfe6e9;--lighter: #f5f6fa;--white: #ffffff;--bg: #0f0f23;--bg-card: #1a1a2e;--bg-sidebar: #16213e;--bg-input: #1a1a2e;--text: #e0e0e0;--text-muted: #8b95a2;--border: #2a2a4a;--shadow: 0 4px 20px rgba(0, 0, 0, .3);--radius: 12px;--radius-sm: 8px;--transition: all .3s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:var(--bg);color:var(--text);display:flex;min-height:100vh;overflow-x:hidden}#root{display:flex;width:100%}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--secondary)}.sidebar{width:260px;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;z-index:100}.sidebar-header{padding:24px 20px;font-size:22px;font-weight:700;display:flex;align-items:center;gap:12px;color:var(--primary-light);border-bottom:1px solid var(--border)}.sidebar-header i{font-size:26px}.nav-links{list-style:none;padding:16px 12px;flex:1}.nav-links li{margin-bottom:4px}.nav-link{display:flex;align-items:center;gap:12px;padding:12px 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h1{font-size:28px;font-weight:700;color:var(--white)}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;transition:var(--transition);text-decoration:none}.btn-primary{background:var(--primary);color:var(--white)}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #6c5ce766}.btn-secondary{background:var(--border);color:var(--text)}.btn-secondary:hover{background:var(--secondary)}.btn-danger{background:transparent;color:var(--danger);border:1px solid var(--danger);padding:6px 12px;font-size:13px}.btn-danger:hover{background:var(--danger);color:var(--white)}.btn-icon{background:transparent;border:1px solid var(--border);color:var(--text-muted);width:36px;height:36px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition)}.btn-icon:hover{border-color:var(--primary);color:var(--primary)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.card-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.card{position:relative;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}.card:hover{border-color:var(--primary);box-shadow:0 4px 20px #6c5ce726;transform:translateY(-2px)}.video-card{aspect-ratio:9/16}.video-card .card-preview{height:100%;aspect-ratio:unset}.card-preview{width:100%;background:var(--darker);display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;overflow:hidden}.card-preview video{width:100%;height:100%;object-fit:cover;display:block}.card-preview .play-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;opacity:0;transition:var(--transition)}.card-preview:hover .play-overlay{opacity:1}.play-overlay i{font-size:48px;color:var(--white)}.card-preview-placeholder{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-muted)}.card-preview-placeholder i{font-size:48px;opacity:.3}.card-body{position:absolute;bottom:0;left:0;width:100%;max-width:100%;background:linear-gradient(180deg,transparent,rgba(0,0,0,1));padding:16px}.track-card .card-body{position:relative;background:transparent;padding:16px}.card-title{font-size:15px;font-weight:600;color:var(--white);margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.badge{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600}.badge-pending{background:#fdcb6e26;color:var(--warning)}.badge-downloading,.badge-processing{background:#74b9ff26;color:var(--info)}.badge-downloaded,.badge-completed,.badge-active{background:#00b89426;color:var(--success)}.badge-failed,.badge-error{background:#e1705526;color:var(--danger)}.badge-deleted,.badge-inactive{background:#636e7226;color:var(--secondary)}.card-actions{display:flex;gap:8px;justify-content:flex-end}.track-card .card-body{display:flex;flex-direction:column;gap:12px}.track-info{display:flex;align-items:center;gap:16px}.track-icon{width:52px;height:52px;background:#6c5ce726;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--primary-light);font-size:22px;flex-shrink:0}.track-details{flex:1;min-width:0}.track-details .card-title{margin-bottom:4px}.track-artist{font-size:13px;color:var(--text-muted)}.track-stats{display:flex;gap:16px;font-size:12px;color:var(--text-muted)}.track-stats span{display:flex;align-items:center;gap:4px}audio{width:100%;height:36px}audio::-webkit-media-controls-panel{background:var(--white)}.montage-card .card-body{padding:16px}.montage-ids{display:flex;flex-direction:column;gap:4px;margin-bottom:8px;font-size:13px;color:var(--text-muted)}.montage-ids span{display:flex;align-items:center;gap:6px}.montage-ids i{width:16px;color:var(--primary-light)}.picker-list{display:flex;flex-direction:column;gap:8px;max-height:420px;overflow-y:auto;padding-right:4px}.picker-item{display:flex;align-items:center;gap:14px;padding:12px 14px;border:2px solid 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i{color:var(--primary-light)}.picker-confirm-card{display:flex;align-items:center;gap:14px;padding:14px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm)}.picker-confirm-thumb{width:72px;height:50px;border-radius:6px;overflow:hidden;background:var(--darker);flex-shrink:0;display:flex;align-items:center;justify-content:center}.picker-confirm-thumb video{width:100%;height:100%;object-fit:cover}.picker-confirm-thumb.placeholder{color:var(--text-muted);font-size:20px;opacity:.5}.picker-confirm-thumb.music{background:#6c5ce71f;color:var(--primary-light);opacity:1}.picker-confirm-info{flex:1;min-width:0}.picker-confirm-divider{display:flex;align-items:center;justify-content:center;padding:14px 0;color:var(--primary-light);font-size:18px}.search-bar{display:flex;align-items:center;gap:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 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h2{font-size:18px;font-weight:600;color:var(--white)}.btn-close{background:transparent;border:none;color:var(--text-muted);font-size:24px;cursor:pointer;transition:var(--transition);line-height:1}.btn-close:hover{color:var(--danger)}.modal-body{padding:24px}.modal-footer{display:flex;justify-content:flex-end;gap:12px;padding:16px 24px;border-top:1px solid var(--border)}.form-group{margin-bottom:20px}.form-group:last-child{margin-bottom:0}.form-group label{display:block;margin-bottom:8px;font-size:14px;font-weight:500;color:var(--text)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 14px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:14px;transition:var(--transition);font-family:inherit}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6c5ce726}.form-group textarea{resize:vertical}.form-group 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.link{color:var(--primary-light);cursor:pointer}.file-name{margin-top:8px;color:var(--success)!important;font-weight:500}.video-player{width:100%;max-height:500px;border-radius:var(--radius-sm);background:#000}#toast-container{position:fixed;top:20px;right:20px;z-index:2000;display:flex;flex-direction:column;gap:10px}.toast{min-width:300px;padding:14px 20px;border-radius:var(--radius-sm);color:var(--white);font-size:14px;font-weight:500;display:flex;align-items:center;gap:10px;box-shadow:var(--shadow);animation:toastIn .3s ease}.toast.removing{animation:toastOut .3s ease forwards}@keyframes toastIn{0%{opacity:0;transform:translate(100px)}to{opacity:1;transform:translate(0)}}@keyframes toastOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100px)}}.toast-success{background:linear-gradient(135deg,#00b894,#00a381)}.toast-error{background:linear-gradient(135deg,#e17055,#d63031)}.toast-info{background:linear-gradient(135deg,#6c5ce7,#5a4bd1)}.loading{grid-column:1 / -1;text-align:center;padding:60px;color:var(--text-muted);font-size:16px}.loading i{margin-right:8px}.empty-state{grid-column:1 / -1;text-align:center;padding:60px;color:var(--text-muted)}.empty-state i{font-size:64px;opacity:.2;margin-bottom:16px;display:block}.empty-state p{font-size:16px;margin-top:8px}.hamburger{display:none;position:fixed;top:16px;left:16px;z-index:200;width:44px;height:44px;border-radius:var(--radius-sm);background:var(--bg-sidebar);border:1px solid var(--border);color:var(--primary-light);font-size:20px;cursor:pointer;align-items:center;justify-content:center;transition:var(--transition);box-shadow:0 2px 12px #0000004d}.hamburger:hover{background:var(--primary);color:var(--white)}.sidebar-overlay{display:none}@media(max-width:1280px){.content{padding:28px}.card-grid{gap:12px}}@media(max-width:1024px){.sidebar{width:220px}.content{margin-left:220px;padding:24px 20px}.section-header h1{font-size:24px}.card-grid{grid-template-columns:repeat(5,1fr)}.modal{max-width:460px;margin:16px}.modal-lg{max-width:700px}}@media(max-width:768px){.hamburger{display:flex}.sidebar{width:260px;transform:translate(-100%);transition:transform .3s ease;z-index:300}.sidebar.open{transform:translate(0)}.sidebar-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:250;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:fadeIn .2s ease}.sidebar-overlay.active{display:block}.content{margin-left:0;padding:76px 16px 24px;width:100%}.section-header{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:20px}.section-header h1{font-size:22px}.section-header .btn{width:100%;justify-content:center;padding:12px 20px}.search-bar{margin-bottom:16px}.card-grid{grid-template-columns:repeat(2,1fr);gap:10px}.card-preview{height:180px}.card-body{padding:14px}.track-info{gap:12px}.track-icon{width:44px;height:44px;font-size:18px}.track-stats{flex-wrap:wrap;gap:10px}.modal-overlay{align-items:flex-end;padding:0}.modal{max-width:100%;border-radius:var(--radius) var(--radius) 0 0;max-height:90vh;overflow-y:auto;margin:0}.modal-lg{max-width:100%;max-height:95vh}.modal-header{padding:16px 20px;position:sticky;top:0;background:var(--bg-card);z-index:1}.modal-body{padding:20px}.modal-footer{padding:14px 20px;position:sticky;bottom:0;background:var(--bg-card)}.file-upload{padding:24px 16px}.video-player{max-height:300px}#toast-container{top:auto;bottom:16px;right:16px;left:16px}.toast{min-width:auto;width:100%;font-size:13px;padding:12px 16px}.montage-ids{font-size:12px}.card-meta{gap:6px;margin-bottom:10px}.badge{font-size:11px;padding:3px 8px}.picker-list{max-height:50vh}.picker-item{padding:10px 12px;gap:10px}.picker-item-preview{width:64px;height:44px}.picker-item-icon{width:44px;height:44px;font-size:18px}.picker-item-title{font-size:13px}.picker-footer{flex-direction:column;gap:12px}.picker-footer-actions{width:100%;justify-content:flex-end}.picker-confirm-card{gap:10px;padding:12px}.picker-confirm-thumb{width:56px;height:40px}}@media(max-width:480px){.content{padding:68px 12px 20px}.section-header h1{font-size:20px}.btn{font-size:13px;padding:10px 16px}.card-preview{height:160px}.card-body{padding:12px}.card-title{font-size:14px}.track-icon{width:40px;height:40px;font-size:16px}.track-details .card-title{font-size:14px}.track-artist{font-size:12px}.track-stats{font-size:11px;gap:8px}.form-group label{font-size:13px}.form-group input,.form-group textarea,.form-group select{font-size:13px;padding:9px 12px}.empty-state{padding:40px 20px}.empty-state i{font-size:48px}.empty-state p{font-size:14px}.loading{padding:40px;font-size:14px}.card-actions{gap:6px}.btn-icon{width:32px;height:32px;font-size:13px}}