:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a28;--bg-card: #15152a;--accent-primary: #e94560;--accent-secondary: #0f3460;--accent-gradient: linear-gradient(135deg, #e94560 0%, #0f3460 100%);--text-primary: #ffffff;--text-secondary: #a0a0b0;--text-muted: #6b6b7b;--border-color: #2a2a40;--success: #4ade80;--warning: #fbbf24;--error: #ef4444;--shadow-lg: 0 20px 40px rgba(0, 0, 0, .5);--shadow-md: 0 10px 20px rgba(0, 0, 0, .4);--shadow-sm: 0 4px 8px rgba(0, 0, 0, .3);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent-primary)}:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}button{font-family:inherit;cursor:pointer;border:none;background:none;font-size:inherit}button:disabled{opacity:.5;cursor:not-allowed}input,textarea,select{font-family:inherit;font-size:inherit;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);padding:8px 12px;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input:focus,textarea:focus,select:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #e9456033}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;width:80px;padding:0;border:none;height:20px;margin:0}input[type=range]::-webkit-slider-track{width:100%;height:4px;background:var(--bg-primary);border-radius:2px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent-primary);cursor:pointer;margin-top:-5px;transition:transform var(--transition-fast)}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.app{display:grid;grid-template-rows:56px 1fr 100px 100px;grid-template-columns:1fr;height:100vh;overflow:hidden;background:var(--bg-primary)}.header{display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);z-index:100}.header-left,.header-right,.header-center{display:flex;align-items:center;gap:8px}.mobile-menu{position:fixed;top:56px;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:99;animation:fadeIn .15s ease}.mobile-menu-content{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:16px;box-shadow:var(--shadow-lg);animation:slideDown .2s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.mobile-menu-section{margin-bottom:16px}.mobile-menu-section:last-child{margin-bottom:0}.mobile-menu-label{display:block;font-size:12px;color:var(--text-muted);margin-bottom:8px;font-weight:500}.mobile-menu-row{display:flex;gap:8px}.mobile-menu-row .btn{flex:1;justify-content:center}.mobile-menu-row .btn span{display:inline!important}.mobile-menu-info{text-align:center;font-size:12px;color:var(--text-muted);padding-top:12px;border-top:1px solid var(--border-color)}.logo{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo-icon{-webkit-text-fill-color:initial;font-size:24px}.divider-v{width:1px;height:24px;background:var(--border-color);margin:0 4px}.zoom-label{font-size:12px;color:var(--text-secondary);min-width:48px;text-align:center}.panel-info{font-size:12px;color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:var(--radius-md);font-weight:500;font-size:13px;transition:all var(--transition-fast);white-space:nowrap}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover:not(:disabled){background:#d63d56;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background:var(--border-color)}.btn-ghost{background:transparent;color:var(--text-secondary);padding:8px}.btn-ghost:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary)}.btn-sm{padding:4px 8px;font-size:12px}.btn-lg{padding:12px 24px;font-size:15px}.btn-danger:hover{color:var(--error);background:rgba(239,68,68,.15)}.main-canvas{position:relative;overflow:hidden;background:var(--bg-primary);display:flex;align-items:center;justify-content:center}.canvas-viewport{width:100%;height:100%;overflow:hidden;position:relative;display:flex;align-items:center}.continuous-canvas{position:relative;background:#1a1a28;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;transition:transform .1s ease-out;margin-left:40px}.panel-divider{position:absolute;top:0;width:2px;background:rgba(233,69,96,.3);z-index:10;pointer-events:none}.panel-divider:before{content:"";position:absolute;top:0;left:-10px;right:-10px;bottom:0;background:linear-gradient(90deg,transparent 0%,rgba(233,69,96,.05) 50%,transparent 100%)}.panel-label{position:absolute;top:8px;left:8px;background:var(--accent-primary);color:#fff;font-size:10px;font-weight:600;padding:2px 8px;border-radius:4px;white-space:nowrap}.canvas-asset{position:absolute;overflow:hidden;border-radius:2px;transition:box-shadow .2s}.canvas-asset.selected{z-index:5}.canvas-asset img{display:block;transition:transform .05s ease-out}.asset-selection-border{position:absolute;top:0;right:0;bottom:0;left:0;border:2px solid var(--accent-primary);border-radius:2px;pointer-events:none;box-shadow:0 0 0 4px #e9456033}.video-indicator{position:absolute;bottom:8px;right:8px;display:flex;align-items:center;gap:4px;background:rgba(0,0,0,.7);color:#fff;padding:4px 8px;border-radius:4px;font-size:11px;font-weight:500;pointer-events:none}.video-indicator svg{flex-shrink:0}.video-duration{font-variant-numeric:tabular-nums}.canvas-asset.is-video:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(to bottom,transparent 70%,rgba(0,0,0,.3) 100%);pointer-events:none;z-index:1}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;width:100%;padding:48px;text-align:center}.empty-state-icon{margin-bottom:24px;color:var(--text-muted);opacity:.5}.empty-state h2{font-size:24px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.empty-state p{font-size:14px;color:var(--text-secondary);margin-bottom:8px}.empty-state .hint{font-size:12px;color:var(--text-muted);margin-bottom:8px}.empty-state .hint:last-of-type{margin-bottom:24px}.transform-controls{position:absolute;top:16px;left:50%;transform:translate(-50%);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:12px 20px;box-shadow:var(--shadow-lg);z-index:50;max-width:calc(100% - 32px);box-sizing:border-box}.control-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:center}.control-row label{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-secondary);white-space:nowrap}.control-row label span{min-width:40px}.control-row .value{font-size:11px;color:var(--text-muted);min-width:36px;text-align:right}.filter-bar{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:8px 16px;overflow:hidden}.filter-bar-header{display:flex;align-items:center;gap:6px;margin-bottom:8px;font-size:12px;color:var(--text-muted);font-weight:500}.filter-presets{display:flex;gap:12px;overflow-x:auto;padding-bottom:4px}.filter-preset{display:flex;flex-direction:column;align-items:center;gap:4px;padding:4px;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);min-width:64px}.filter-preset:hover,.filter-preset.active{background:var(--bg-tertiary)}.filter-preset.active .filter-preview{border-color:var(--accent-primary);box-shadow:0 0 0 2px #e945604d}.filter-preview{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--bg-tertiary);overflow:hidden;display:flex;align-items:center;justify-content:center;border:2px solid transparent;transition:all var(--transition-fast)}.filter-preview img{width:100%;height:100%;object-fit:cover}.filter-preview svg{color:var(--text-muted)}.filter-name{font-size:10px;color:var(--text-secondary);white-space:nowrap}.filter-preset.active .filter-name{color:var(--accent-primary);font-weight:500}.timeline{background:var(--bg-secondary);border-top:1px solid var(--border-color);display:flex;flex-direction:column;overflow:hidden}.timeline-header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;border-bottom:1px solid var(--border-color)}.timeline-title{font-size:12px;font-weight:600;color:var(--text-primary)}.timeline-count{font-size:11px;color:var(--text-muted)}.timeline-content{flex:1;display:flex;gap:8px;padding:8px 16px;overflow-x:auto;align-items:center}.timeline-item{display:flex;align-items:center;gap:8px;padding:6px 8px;background:var(--bg-tertiary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);min-width:180px;max-width:220px;flex-shrink:0}.timeline-item:hover{background:var(--bg-card)}.timeline-item.selected{background:var(--bg-card);border:1px solid var(--accent-primary)}.timeline-thumb{width:48px;height:48px;border-radius:var(--radius-sm);overflow:hidden;flex-shrink:0;background:var(--bg-primary)}.timeline-thumb img{width:100%;height:100%;object-fit:cover}.timeline-thumb-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.timeline-item-info{flex:1;min-width:0}.timeline-item-name{font-size:12px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}.timeline-item-meta{font-size:10px;color:var(--text-muted)}.timeline-item-remove{opacity:0;transition:opacity var(--transition-fast)}.timeline-item:hover .timeline-item-remove{opacity:1}.timeline-empty{width:100%;text-align:center;padding:16px;color:var(--text-muted);font-size:13px}.drop-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(10,10,15,.95);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s}.drop-overlay-content{display:flex;flex-direction:column;align-items:center;text-align:center;color:var(--text-primary)}.drop-overlay-content svg{color:var(--accent-primary);margin-bottom:24px;animation:pulse 1.5s infinite}.drop-overlay-content h2{font-size:28px;margin-bottom:8px}.drop-overlay-content p{color:var(--text-secondary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.8);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn var(--transition-fast)}.modal{background:var(--bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-width:480px;width:90%;max-height:90vh;overflow:auto;animation:slideUp var(--transition-normal);border:1px solid var(--border-color)}.modal-header{padding:20px 24px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.modal-header h2{font-size:18px;font-weight:600}.modal-body{padding:24px}.modal-footer{padding:16px 24px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:12px}.export-preview{background:var(--bg-tertiary);border-radius:var(--radius-md);padding:16px;margin-bottom:16px;text-align:center}.export-size-badge{display:inline-block;background:var(--accent-primary);color:#fff;font-weight:600;padding:4px 12px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:8px}.export-note{font-size:13px;color:var(--text-secondary)}.export-note strong{color:var(--accent-primary)}.export-info{margin-top:16px}.export-info p{font-size:13px;color:var(--text-secondary);margin-bottom:8px}.export-progress{text-align:center}.progress-bar{height:6px;background:var(--bg-tertiary);border-radius:3px;overflow:hidden;margin-bottom:16px}.progress-fill{height:100%;background:var(--accent-gradient);transition:width .3s ease}.form-group{display:flex;align-items:center;gap:12px;margin-bottom:16px}.form-group label{font-size:13px;font-weight:500;color:var(--text-secondary);min-width:60px}.form-group input[type=range]{flex:1}.form-group span{font-size:13px;color:var(--text-muted);min-width:40px;text-align:right}.form-select{flex:1;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);padding:8px 12px;font-size:13px;cursor:pointer}.form-select:hover{border-color:var(--accent-primary)}.form-select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 2px #e9456033}.export-section-header{display:flex;align-items:center;gap:8px;padding:12px 0;margin:16px 0 12px;border-top:1px solid var(--border-color);color:var(--accent-primary);font-weight:500;font-size:14px}.video-info{background:linear-gradient(135deg,rgba(233,69,96,.1) 0%,rgba(15,52,96,.1) 100%);border:1px solid rgba(233,69,96,.2);border-radius:var(--radius-md);padding:12px 16px;margin-bottom:16px}.video-info p{color:var(--text-primary);margin-bottom:6px}.video-info p:last-child{margin-bottom:0}.export-substage{font-size:12px;color:var(--text-muted);margin-top:8px}@media (min-width: 1024){.transform-controls{left:50%!important;transform:translate(-50%)!important}}@media (max-width: 1024px){.app{grid-template-rows:52px 1fr 90px 90px}.header{padding:0 12px}.transform-controls{padding:6px 12px}.control-row{gap:12px}.control-row label span{display:none}input[type=range]{width:60px}}@media (max-width: 768px){html,body,#root{overflow:auto;height:auto;min-height:100%}.app{grid-template-rows:56px auto auto auto;min-height:100vh;height:auto;overflow-y:auto;overflow-x:hidden}.header-center,.logo span,.btn span{display:none}.header{padding:0 8px;position:sticky;top:0;z-index:100}.header-left,.header-right{gap:4px}.btn{padding:8px 10px}.btn-ghost{padding:8px}.main-canvas{min-height:50vh;height:auto;overflow:auto;-webkit-overflow-scrolling:touch;display:block;padding:16px}.canvas-viewport{min-height:400px;height:auto;overflow:auto;display:block;align-items:flex-start;justify-content:flex-start}.continuous-canvas{margin:0 auto;transform-origin:top center!important}.empty-state{padding:32px 16px;min-height:300px}.empty-state h2{font-size:20px}.empty-state p{font-size:13px}.empty-state .hint{font-size:11px}.empty-state-icon svg{width:48px;height:48px}.transform-controls{position:fixed;top:auto;bottom:190px;left:12px;right:12px;transform:none;padding:12px 16px;border-radius:var(--radius-md);z-index:100;max-width:none;background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-lg)}.control-row{display:flex;flex-wrap:nowrap;gap:12px;justify-content:space-between;align-items:center}.control-row label{display:flex;flex:1;min-width:0;gap:6px;align-items:center}.control-row label span{display:none}.control-row label svg{flex-shrink:0}.control-row input[type=range]{flex:1;min-width:50px;max-width:80px}.control-row .value{min-width:32px;font-size:10px}input[type=range]{width:50px;flex-shrink:1}.filter-bar{padding:8px 12px;min-height:auto}.filter-bar-header{margin-bottom:6px}.filter-presets{gap:8px;padding-bottom:8px}.filter-preset{min-width:56px}.filter-preview{width:40px;height:40px}.filter-name{font-size:9px}.timeline{min-height:auto}.timeline-header{padding:8px 12px}.timeline-content{padding:8px 12px;gap:8px}.timeline-item{min-width:130px;max-width:150px;padding:6px}.timeline-thumb{width:40px;height:40px}.timeline-item-name{font-size:11px}.timeline-item-meta{font-size:9px}.timeline-item-remove{opacity:1}.modal{width:95%;max-height:85vh;margin:16px}.modal-header{padding:16px}.modal-header h2{font-size:16px}.modal-body{padding:16px}.modal-footer{padding:12px 16px;flex-direction:column;gap:8px}.modal-footer .btn{width:100%;justify-content:center}.export-preview{padding:12px}.export-size-badge{font-size:12px;padding:4px 10px}.export-note{font-size:12px}.form-group{flex-wrap:wrap;gap:8px}.form-group label{min-width:100%;margin-bottom:4px}.form-select{width:100%}.drop-overlay-content h2{font-size:22px}.drop-overlay-content p{font-size:13px}.drop-overlay-content svg{width:48px;height:48px}}@media (max-width: 480px){.app{grid-template-rows:50px auto auto auto}.header{padding:0 6px}.logo-icon{font-size:20px}.btn{padding:6px 8px;font-size:12px}.btn-ghost{padding:6px}.btn-lg{padding:10px 16px;font-size:13px}.btn svg{width:16px;height:16px}.main-canvas{padding:12px 8px;min-height:45vh}.canvas-viewport{min-height:350px}.panel-label{font-size:8px;padding:2px 4px}.transform-controls{bottom:175px;padding:10px 12px;left:8px;right:8px}.control-row{gap:8px;flex-wrap:nowrap}.control-row label{gap:4px}.control-row label svg{width:14px;height:14px;flex-shrink:0}.control-row input[type=range]{min-width:40px;max-width:60px;height:18px}input[type=range]::-webkit-slider-thumb{width:14px;height:14px;margin-top:-5px}.control-row .value{font-size:10px;min-width:30px}.control-row .btn{padding:6px}.control-row .btn svg{width:14px;height:14px}.empty-state{padding:24px 12px;min-height:250px}.empty-state h2{font-size:18px}.empty-state p{font-size:12px}.empty-state .hint{font-size:10px;line-height:1.4}.empty-state-icon{margin-bottom:16px}.empty-state-icon svg{width:40px;height:40px}.filter-bar{padding:6px 8px}.filter-bar-header{font-size:11px;margin-bottom:4px}.filter-bar-header svg{width:14px;height:14px}.filter-presets{gap:6px}.filter-preset{min-width:48px;padding:3px}.filter-preview{width:36px;height:36px}.filter-preview svg{width:16px;height:16px}.filter-name{font-size:8px}.timeline-header{padding:6px 8px}.timeline-title{font-size:11px}.timeline-count{font-size:10px}.timeline-content{padding:6px 8px;gap:6px}.timeline-item{min-width:110px;max-width:130px;padding:5px;gap:6px}.timeline-thumb{width:36px;height:36px}.timeline-item-name{font-size:10px}.timeline-item-meta{font-size:8px}.timeline-empty{font-size:12px;padding:12px}.modal{width:98%;max-height:90vh;margin:8px;border-radius:var(--radius-md)}.modal-header{padding:12px}.modal-header h2{font-size:15px}.modal-body{padding:12px}.modal-footer{padding:10px 12px}.export-size-badge{font-size:11px;padding:3px 8px}.export-note,.export-info p{font-size:11px}.video-info p{font-size:11px;margin-bottom:4px}.form-group{margin-bottom:12px}.form-group label{font-size:12px}.export-section-header{font-size:13px;padding:10px 0;margin:12px 0 10px}.video-indicator{padding:3px 6px;font-size:10px;bottom:4px;right:4px}.video-indicator svg{width:12px;height:12px}}@media (max-width: 768px) and (orientation: landscape){.app{grid-template-rows:48px 1fr 70px 70px}.main-canvas{min-height:40vh}.canvas-viewport{min-height:250px}.transform-controls{bottom:145px;padding:8px 12px}.control-row{gap:10px}.filter-bar{padding:4px 12px}.filter-presets{gap:6px}.filter-preview{width:32px;height:32px}.timeline-content{padding:4px 12px}.timeline-thumb{width:32px;height:32px}}@media (hover: none) and (pointer: coarse){.btn{min-height:44px;min-width:44px}.btn-ghost{min-height:40px;min-width:40px}.timeline-item{min-height:56px}.timeline-item-remove{opacity:1;min-width:32px;min-height:32px}.filter-preset{min-height:70px}input[type=range]{height:24px}input[type=range]::-webkit-slider-thumb{width:20px;height:20px;margin-top:-8px}.filter-presets,.timeline-content,.canvas-viewport{-webkit-overflow-scrolling:touch;scroll-behavior:smooth}*{touch-action:manipulation}}@supports (padding: env(safe-area-inset-bottom)){.app{padding-bottom:env(safe-area-inset-bottom)}.header{padding-left:max(8px,env(safe-area-inset-left));padding-right:max(8px,env(safe-area-inset-right))}.filter-bar,.timeline{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}.transform-controls{right:max(8px,env(safe-area-inset-right))}}@media (max-width: 768px){.filter-presets:after,.timeline-content:after{content:"";position:absolute;right:0;top:0;bottom:0;width:24px;background:linear-gradient(to left,var(--bg-secondary) 0%,transparent 100%);pointer-events:none;opacity:.8}.filter-bar,.timeline-content{position:relative}}@media (prefers-contrast: high){.btn{border:2px solid currentColor}.transform-controls,.timeline-item.selected{border-width:2px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.continuous-canvas{transition:none}}