*{margin:0;padding:0;box-sizing:border-box}:root{--bg-1: #667eea;--bg-2: #e91e90;--bg-3: #ff9a56;--bg-gradient: linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 50%, var(--bg-3) 100%);--card-bg: rgba(255, 255, 255, .95);--accent: #ff3d7f;--accent-2: #3de1ff;--accent-3: #ffd83d;--text: #1a1a2e;--text-light: #666;--shadow: 0 8px 32px rgba(0, 0, 0, .15);--radius: 16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg-gradient);background-attachment:fixed;min-height:100vh;color:var(--text)}#app{min-height:100vh;padding:24px}.title{font-size:3rem;font-weight:900;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.2);text-align:center}.title .accent{background:linear-gradient(135deg,var(--accent-3),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:4rem}.subtitle{text-align:center;color:#ffffffbf;font-size:.95rem;margin-top:4px;font-weight:500;letter-spacing:.05em}[data-theme=simple] .subtitle{color:var(--text-light)}.edit-container{max-width:680px;margin:0 auto}.header{text-align:center;padding:16px 0 24px}.grid-section{background:var(--card-bg);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.grid-section h2{font-size:1.3rem;font-weight:800;margin-bottom:16px;color:var(--text)}.count{color:var(--accent)}.selection-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.grid-cell{aspect-ratio:16 / 9;border-radius:12px;overflow:hidden;position:relative;cursor:pointer;transition:transform .2s,box-shadow .2s}.grid-cell.empty{background:#0000000a;border:3px dashed rgba(0,0,0,.12);display:flex;align-items:center;justify-content:center}.grid-cell.empty:hover{background:#0000000f;border-color:var(--accent)}.grid-cell.filled{box-shadow:0 4px 12px #0000001a}.grid-cell.filled:hover{transform:scale(1.03);box-shadow:0 8px 24px #00000026}.grid-cell.dragging{opacity:.5}.grid-cell.drag-over{outline:3px solid var(--accent);outline-offset:-3px}.grid-cell img{width:100%;height:100%;object-fit:cover}.cell-add-btn{width:48px;height:48px;border-radius:50%;border:3px dashed var(--accent);background:transparent;color:var(--accent);font-size:1.8rem;font-weight:700;cursor:pointer;transition:background .2s,transform .2s;line-height:1}.cell-add-btn:hover{background:#ff3d7f1a;transform:scale(1.1)}.cell-slot-number{position:absolute;top:6px;left:8px;font-size:.7rem;font-weight:800;color:#0003}.cell-overlay{position:absolute;inset:0;background:linear-gradient(transparent 50%,#0009);display:flex;align-items:flex-end;justify-content:space-between;padding:8px;opacity:0;transition:opacity .2s}.grid-cell:hover .cell-overlay{opacity:1}.cell-number{background:var(--accent);color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:800}.cell-remove{background:#ffffffe6;border:none;width:24px;height:24px;border-radius:50%;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--accent);font-weight:800}.cell-remove:hover{background:#fff;transform:scale(1.1)}.view-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:calc(100vh - 48px);gap:24px}.view-mode{max-width:600px;width:100%}.view-mode .grid-cell{cursor:pointer}.view-overlay{opacity:0}.view-mode .grid-cell:hover .view-overlay{opacity:1}.view-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;justify-content:center}.edit-btn{padding:12px 24px;border:2px solid rgba(255,255,255,.5);border-radius:50px;background:transparent;color:#fff;font-size:1rem;font-weight:700;cursor:pointer;transition:background .2s}.edit-btn:hover{background:#ffffff26}.modal-overlay{position:fixed;inset:0;z-index:1000;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .25s ease}.modal-overlay.modal-visible{opacity:1}.modal-content{background:var(--card-bg);border-radius:var(--radius);box-shadow:0 16px 48px #0000004d;width:90vw;max-width:720px;max-height:85vh;display:flex;flex-direction:column;overflow:hidden;transform:translateY(20px);transition:transform .25s ease}.modal-visible .modal-content{transform:translateY(0)}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid rgba(0,0,0,.08)}.modal-title{font-size:1.1rem;font-weight:800;color:var(--text)}.modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-light);padding:4px 8px;border-radius:8px;transition:background .2s}.modal-close:hover{background:#0000000d}.modal-body{flex:1;overflow-y:auto;padding:16px 20px}.theme-switcher{display:flex;gap:8px;justify-content:center;margin-top:12px}.theme-btn{width:32px;height:32px;border-radius:50%;border:3px solid rgba(255,255,255,.3);cursor:pointer;transition:transform .2s,border-color .2s}.theme-btn:hover{transform:scale(1.15)}.theme-btn.active{border-color:#fff;box-shadow:0 0 12px #ffffff80}.browser-toolbar{display:flex;gap:8px;margin-bottom:12px}.browser-search{flex:1;padding:8px 14px;border:2px solid rgba(0,0,0,.1);border-radius:8px;font-size:.9rem;outline:none;transition:border-color .2s;background:var(--card-bg);color:var(--text)}.browser-search:focus{border-color:var(--accent)}.browser-sort{padding:8px 12px;border:2px solid rgba(0,0,0,.1);border-radius:8px;font-size:.9rem;background:var(--card-bg);color:var(--text);cursor:pointer;outline:none}.browser-sort:focus{border-color:var(--accent)}.video-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-height:500px;overflow-y:auto;padding-right:8px}.video-list::-webkit-scrollbar{width:6px}.video-list::-webkit-scrollbar-track{background:transparent}.video-list::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}.video-card{border-radius:12px;overflow:hidden;cursor:pointer;transition:transform .2s,box-shadow .2s;background:#0000000a}.video-card:hover{transform:translateY(-2px);box-shadow:0 6px 16px #0000001a}.video-card.selected{opacity:.5;cursor:default;pointer-events:none}.video-thumb-wrapper{position:relative;aspect-ratio:16 / 9}.video-thumb-wrapper img{width:100%;height:100%;object-fit:cover}.selected-badge{position:absolute;top:8px;right:8px;width:28px;height:28px;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800}.video-info{padding:8px 12px}.video-title{font-size:.8rem;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--text)}.load-more-btn{width:100%;padding:12px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--accent),#e91e90);color:#fff;font-size:1rem;font-weight:700;cursor:pointer;margin-top:12px;transition:transform .2s}.load-more-btn:hover{transform:scale(1.02)}.share-buttons{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}.share-btn{padding:10px 20px;border:none;border-radius:50px;color:#fff;font-size:.9rem;font-weight:700;cursor:pointer;transition:transform .2s,box-shadow .2s;text-decoration:none;display:inline-flex;align-items:center}.share-btn:hover{transform:scale(1.05)}.share-twitter{background:#000}.share-twitter:hover{box-shadow:0 4px 16px #0000004d}.share-line{background:#06c755}.share-line:hover{box-shadow:0 4px 16px #06c7554d}.share-copy{background:linear-gradient(135deg,var(--accent-2),var(--accent))}.share-copy:hover{box-shadow:0 4px 16px #ff3d7f4d}.share-btn.copied{background:linear-gradient(135deg,#4caf50,#2e7d32)}.share-save{background:linear-gradient(135deg,var(--accent-3),#ffab40);color:var(--text)!important}.share-save:hover{box-shadow:0 4px 16px #ffd83d66}.save-container{margin-top:8px}.loading{text-align:center;padding:40px;color:var(--text-light);font-size:1.1rem}.error{text-align:center;padding:40px;color:var(--accent)}.toast-container{position:fixed;top:20px;left:50%;transform:translate(-50%);z-index:9999;display:flex;flex-direction:column;gap:8px;pointer-events:none}.toast{display:flex;align-items:center;gap:12px;padding:14px 20px;border-radius:12px;color:#fff;font-size:.95rem;font-weight:600;box-shadow:0 8px 32px #00000040;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);pointer-events:auto;opacity:0;transform:translateY(-20px);transition:opacity .3s,transform .3s;max-width:480px}.toast-visible{opacity:1;transform:translateY(0)}.toast-error{background:#dc2626eb}.toast-warning{background:#ea8214eb}.toast-info{background:#3b82f6eb}.toast-close{background:none;border:none;color:#ffffffb3;font-size:1.2rem;cursor:pointer;padding:0 4px;line-height:1;flex-shrink:0}.toast-close:hover{color:#fff}[data-theme=dark] .grid-cell.empty{background:#ffffff0d;border-color:#ffffff26}[data-theme=dark] .grid-cell.empty:hover{background:#ffffff14}[data-theme=dark] .cell-add-btn{border-color:var(--accent);color:var(--accent)}[data-theme=dark] .cell-slot-number{color:#ffffff40}[data-theme=dark] .video-card{background:#ffffff14}[data-theme=dark] .modal-header{border-bottom-color:#ffffff1a}[data-theme=dark] .modal-close:hover{background:#ffffff1a}[data-theme=dark] .browser-search,[data-theme=dark] .browser-sort{border-color:#ffffff26}[data-theme=simple] .title{color:var(--text);text-shadow:none}[data-theme=simple] .title .accent{background:none;-webkit-background-clip:unset;-webkit-text-fill-color:var(--text);background-clip:unset}[data-theme=simple] .grid-section{box-shadow:0 1px 3px #00000014;border:1px solid #e5e5e5}[data-theme=simple] .grid-cell.empty{background:#fafafa;border:2px dashed #ddd}[data-theme=simple] .grid-cell.empty:hover{border-color:#999}[data-theme=simple] .cell-add-btn{border-color:#bbb;color:#bbb}[data-theme=simple] .cell-add-btn:hover{border-color:#666;color:#666;background:#00000008}[data-theme=simple] .grid-cell.filled{box-shadow:0 1px 4px #00000014}[data-theme=simple] .cell-number{background:#222}[data-theme=simple] .cell-remove{color:#222}[data-theme=simple] .edit-btn{color:var(--text);border-color:#0003}[data-theme=simple] .edit-btn:hover{background:#0000000d}[data-theme=simple] .share-save{background:#222;color:#fff!important}[data-theme=simple] .share-copy{background:#555}[data-theme=simple] .load-more-btn{background:#222}[data-theme=simple] .theme-btn{border-color:#00000026}[data-theme=simple] .theme-btn.active{border-color:#222;box-shadow:0 0 8px #00000026}[data-theme=simple] .modal-content{box-shadow:0 4px 24px #0000001f;border:1px solid #e5e5e5}[data-theme=simple] .selected-badge{background:#222}@media(max-width:768px){.title{font-size:2rem}.title .accent{font-size:2.5rem}.modal-content{width:95vw;max-height:90vh}.video-list{max-height:400px}.view-actions{flex-direction:column}}