*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0d0d1a;--surface: #13131f;--surface2: #1a1a2a;--surface3: #222235;--border: #2a2a42;--border2: #363650;--primary: #7c3aed;--primary-h: #6d28d9;--primary-dim: rgba(124,58,237,.18);--accent: #10b981;--danger: #ef4444;--danger-h: #dc2626;--warn: #f59e0b;--text: #e2e8f0;--muted: #8892a4;--dim: #4a5268;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--mono: "SF Mono", "Fira Code", ui-monospace, monospace;--r: 8px;--r-lg: 14px;--tr: .14s ease}html,body{height:100%}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow:hidden}#root{height:100%}button{cursor:pointer;font-family:var(--font);border:none;outline:none}input{font-family:var(--mono);outline:none}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-header{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:52px;flex-shrink:0;background:var(--surface);border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:100}.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.05rem;letter-spacing:-.02em}.logo-mark{width:28px;height:28px;background:var(--primary);border-radius:7px;display:flex;align-items:center;justify-content:center}.logo-mark svg{display:block}.logo-name{background:linear-gradient(135deg,#a78bfa,#38bdf8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.btn-ghost{background:none;border:1px solid var(--border);color:var(--muted);padding:5px 14px;border-radius:var(--r);font-size:.8rem;transition:all var(--tr)}.btn-ghost:hover{border-color:var(--border2);color:var(--text);background:var(--surface2)}.upload-wrap{flex:1;display:flex;align-items:center;justify-content:center;padding:24px;flex-direction:column;gap:16px}.upload-zone{width:100%;max-width:560px;border:2px dashed var(--border2);border-radius:var(--r-lg);background:var(--surface);padding:56px 32px;text-align:center;cursor:pointer;transition:all var(--tr);position:relative;overflow:hidden}.upload-zone:hover,.upload-zone.dragging{border-color:var(--primary);background:var(--surface2)}.upload-zone.dragging{transform:scale(1.01)}.upload-zone:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at center,var(--primary-dim) 0%,transparent 70%);opacity:0;transition:opacity var(--tr)}.upload-zone:hover:before,.upload-zone.dragging:before{opacity:1}.upload-icon{color:var(--primary);margin-bottom:20px}.upload-icon svg{display:block;margin:0 auto}.upload-title{font-size:1.3rem;font-weight:700;margin-bottom:8px}.upload-sub{font-size:.9rem;color:var(--muted);margin-bottom:20px}.upload-formats{display:inline-flex;gap:6px;flex-wrap:wrap;justify-content:center;font-size:.75rem;color:var(--dim);font-family:var(--mono)}.upload-formats span{background:var(--surface3);border:1px solid var(--border);padding:2px 8px;border-radius:20px}.upload-progress-wrap{display:flex;flex-direction:column;align-items:center;gap:16px}.upload-spinner{width:44px;height:44px;border:3px solid var(--border2);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}.upload-pct{font-family:var(--mono);font-size:1.4rem;font-weight:700;color:var(--primary)}.upload-lbl{font-size:.85rem;color:var(--muted)}.progress-bar{width:200px;height:4px;background:var(--border);border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:var(--primary);border-radius:2px;transition:width .2s}.upload-error{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:#fca5a5;padding:10px 16px;border-radius:var(--r);font-size:.85rem;max-width:560px;width:100%}.editor{display:flex;flex-direction:column;height:calc(100vh - 52px);overflow:hidden}.editor-body{display:flex;flex:1;min-height:0;overflow:hidden}.player-wrap{flex:1;min-width:0;background:#000;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}.video-el{max-width:100%;max-height:100%;display:block;object-fit:contain}.player-center-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:#0009;border:2px solid rgba(255,255,255,.25);border-radius:50%;color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--tr);pointer-events:none}.player-wrap:hover .player-center-btn{opacity:1;pointer-events:auto}.player-center-btn svg{margin-left:3px}.ranges-panel{width:260px;flex-shrink:0;background:var(--surface);border-left:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border);flex-shrink:0}.panel-head-title{font-size:.75rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.btn-add-clip{font-size:.75rem;background:var(--primary-dim);border:1px solid rgba(124,58,237,.4);color:#a78bfa;padding:4px 10px;border-radius:6px;transition:all var(--tr)}.btn-add-clip:hover{background:#7c3aed4d;border-color:var(--primary)}.ranges-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:20px;text-align:center}.ranges-empty-icon{color:var(--dim)}.ranges-empty p{font-size:.8rem;color:var(--dim);line-height:1.5}.ranges-list{flex:1;overflow-y:auto;padding:8px;display:flex;flex-direction:column;gap:6px}.range-item{background:var(--surface2);border:1px solid var(--border);border-radius:var(--r);padding:10px;animation:fadeIn .15s ease}.range-item:hover{border-color:var(--border2)}.range-item-head{display:flex;align-items:center;gap:6px;margin-bottom:8px}.range-badge{font-size:.7rem;font-weight:700;font-family:var(--mono);background:var(--primary-dim);color:#a78bfa;border:1px solid rgba(124,58,237,.3);padding:2px 7px;border-radius:4px}.range-dur{font-size:.72rem;color:var(--muted);font-family:var(--mono);flex:1}.btn-goto,.btn-rm{width:22px;height:22px;border-radius:5px;font-size:.7rem;background:none;border:1px solid var(--border);color:var(--dim);display:flex;align-items:center;justify-content:center;transition:all var(--tr)}.btn-goto:hover{color:var(--accent);border-color:var(--accent);background:#10b9811a}.btn-rm:hover{color:var(--danger);border-color:var(--danger);background:#ef44441a}.range-inputs{display:flex;flex-direction:column;gap:5px}.range-inputs label{display:flex;align-items:center;gap:8px}.range-inputs label 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var(--border);color:var(--muted);display:flex;align-items:center;justify-content:center;transition:all var(--tr);cursor:pointer;line-height:1;padding:0}.zoom-btn:hover{background:var(--border);color:var(--text);border-color:var(--border2)}.zoom-reset{font-size:9px;font-weight:600;width:auto;padding:0 6px}.zoom-label{font-family:var(--mono);font-size:10px;color:var(--muted);min-width:28px;text-align:center}.tl-scrollbar{height:6px;border-radius:3px;background:var(--surface3);position:relative;cursor:pointer;overflow:hidden}.tl-scrollbar-thumb{position:absolute;top:0;bottom:0;border-radius:3px;background:var(--border2);transition:background var(--tr)}.tl-scrollbar:hover 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var(--tr)}.range-block:hover{background:#7c3aed61}.range-block.preview{background:#7c3aed26;border-color:#7c3aed73;border-style:dashed;pointer-events:none}.range-handle{position:absolute;top:0;bottom:0;width:10px;background:var(--primary);border-radius:2px;cursor:ew-resize;display:flex;align-items:center;justify-content:center}.range-handle.lft{left:0;border-radius:3px 0 0 3px}.range-handle.rgt{right:0;border-radius:0 3px 3px 0}.range-handle:after{content:"";width:2px;height:50%;background:#fff9;border-radius:1px}.range-lbl{flex:1;text-align:center;font-size:10px;font-family:var(--mono);color:#fffc;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 12px;pointer-events:none}.range-x{position:absolute;top:-9px;right:-9px;width:18px;height:18px;background:var(--danger);border:none;border-radius:50%;color:#fff;font-size:11px;line-height:1;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--tr);z-index:10}.range-block:hover .range-x{opacity:1}.range-x:hover{background:var(--danger-h)}.playhead{position:absolute;top:-4px;bottom:-4px;width:2px;background:var(--warn);transform:translate(-50%);pointer-events:none;z-index:20;will-change:left}.playhead:before{content:"";position:absolute;top:2px;left:50%;transform:translate(-50%);width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-top:8px solid var(--warn)}.scrubber-row{padding:6px 14px 2px;flex-shrink:0}.scrubber{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:20px;background:transparent;cursor:pointer;outline:none;padding:0;margin:0;display:block}.scrubber::-webkit-slider-runnable-track{height:5px;border-radius:3px;background:inherit}.scrubber::-moz-range-track{height:5px;border-radius:3px;background:var(--surface3)}.scrubber::-moz-range-progress{height:5px;border-radius:3px;background:var(--warn)}.scrubber::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--warn);cursor:pointer;margin-top:-5.5px;box-shadow:0 0 0 3px #f59e0b33;transition:box-shadow var(--tr),transform var(--tr)}.scrubber:hover::-webkit-slider-thumb{box-shadow:0 0 0 6px #f59e0b40;transform:scale(1.15)}.scrubber::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--warn);border:none;cursor:pointer;box-shadow:0 0 0 3px #f59e0b33}.controls-bar{display:flex;align-items:center;justify-content:space-between;padding:7px 14px;gap:10px;flex-shrink:0;border-top:1px solid var(--border)}.ctrl-left{display:flex;flex-direction:column;gap:1px;min-width:0}.file-name{font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:180px}.file-dur{font-size:10px;color:var(--dim);font-family:var(--mono)}.ctrl-mid{display:flex;align-items:center;gap:10px}.timecode{font-family:var(--mono);font-size:1rem;font-weight:700;color:var(--text);min-width:56px;text-align:center}.btn-play{width:36px;height:36px;border-radius:50%;background:var(--surface3);border:1px solid var(--border);color:var(--text);display:flex;align-items:center;justify-content:center;transition:all var(--tr)}.btn-play:hover{background:var(--border);border-color:var(--border2)}.btn-play svg{display:block}.ctrl-right{display:flex;align-items:center;gap:10px}.clip-count{font-size:.75rem;color:var(--muted);white-space:nowrap}.btn-cut{display:flex;align-items:center;gap:8px;background:var(--primary);color:#fff;padding:8px 18px;border-radius:var(--r);font-size:.85rem;font-weight:600;white-space:nowrap;transition:all var(--tr);border:none}.btn-cut:hover:not(:disabled){background:var(--primary-h);transform:translateY(-1px);box-shadow:0 4px 16px #7c3aed66}.btn-cut:disabled{opacity:.45;cursor:not-allowed;transform:none}.spinner-sm{width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}.cut-error{padding:6px 14px;font-size:.78rem;color:#fca5a5;background:#ef44441a;border-top:1px solid rgba(239,68,68,.2)}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 700px){.editor-body{flex-direction:column}.ranges-panel{width:100%;height:180px;border-left:none;border-top:1px solid var(--border);flex-direction:row;overflow-x:auto}.panel-head{flex-direction:column;align-items:flex-start;gap:6px;min-width:140px}.ranges-list{flex-direction:row;overflow-x:auto;overflow-y:hidden;padding:8px}.range-item{min-width:200px}.timeline-section{height:120px}.controls-bar{flex-wrap:wrap}.ctrl-left{display:none}.timecode{font-size:.85rem}.btn-cut{padding:7px 14px}.player-center-btn{opacity:1;pointer-events:auto}}