:root{--primary: #2563eb;--primary-hover: #1d4ed8;--success: #10b981;--success-hover: #059669;--error: #ef4444;--warning: #f59e0b;--secondary: #64748b;--secondary-hover: #475569;--background: #f8fafc;--surface: #ffffff;--border: #e2e8f0;--text: #1e293b;--text-secondary: #64748b;--shadow: rgba(0, 0, 0, .1);--shadow-lg: rgba(0, 0, 0, .15)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:var(--text);background-color:var(--background);min-height:100vh}#app{width:100%;min-height:100vh}.app-header{background:linear-gradient(135deg,var(--primary) 0%,#1e40af 100%);color:#fff;padding:2rem 1rem;text-align:center;box-shadow:0 4px 6px var(--shadow)}.app-header h1{font-size:2rem;font-weight:700;margin-bottom:.5rem}.subtitle{font-size:1rem;opacity:.9}.container{max-width:1200px;margin:0 auto;padding:2rem 1rem}section{margin-bottom:2rem}.hidden{display:none!important}.drop-zone{border:3px dashed var(--border);border-radius:16px;padding:3rem 2rem;text-align:center;background-color:var(--surface);cursor:pointer;transition:all .3s ease}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--primary);background-color:#eff6ff;transform:translateY(-2px)}.upload-icon{width:64px;height:64px;color:var(--primary);margin:0 auto 1rem}.drop-text{font-size:1.25rem;font-weight:600;color:var(--text);margin-bottom:.5rem}.drop-subtext{color:var(--text-secondary);font-size:.875rem}.video-list-section{background-color:var(--surface);border-radius:16px;padding:1.5rem;box-shadow:0 1px 3px var(--shadow)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;gap:1rem}.section-header h2{font-size:1.5rem;font-weight:600;color:var(--text)}.video-list{display:flex;flex-direction:column;gap:1rem}.video-item{display:grid;grid-template-columns:auto 100px 1fr auto auto;gap:1rem;align-items:center;background-color:var(--surface);border:2px solid var(--border);border-radius:12px;padding:1rem;transition:all .2s ease}.video-reorder-section{display:flex;flex-direction:column;align-items:center;gap:.5rem}.video-item:hover{border-color:var(--primary);box-shadow:0 4px 6px var(--shadow)}.video-item.dragging{opacity:.5}.video-drag-handle{cursor:grab;color:var(--text-secondary)}.video-drag-handle:active{cursor:grabbing}.video-drag-handle svg{width:24px;height:24px}.video-arrow-buttons{display:flex;flex-direction:column;gap:.25rem}.btn-arrow{background:none;border:1px solid var(--border);color:var(--text);cursor:pointer;padding:.25rem;border-radius:4px;transition:all .2s;display:flex;align-items:center;justify-content:center;width:28px;height:28px}.btn-arrow:hover:not(:disabled){background-color:var(--primary);border-color:var(--primary);color:#fff;transform:translateY(-1px)}.btn-arrow:active:not(:disabled){transform:translateY(0)}.btn-arrow:disabled{opacity:.3;cursor:not-allowed;border-color:var(--border);color:var(--text-secondary)}.btn-arrow svg{width:16px;height:16px}.video-preview{width:100px;height:56px;border-radius:8px;overflow:hidden;background-color:#000}.video-thumbnail{width:100%;height:100%;object-fit:cover}.video-info{display:flex;flex-direction:column;align-items:flex-start;min-width:0}.video-name{font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;width:100%}.video-meta{font-size:.875rem;color:var(--text-secondary)}.video-controls{display:flex;align-items:center}.trim-label{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text);white-space:nowrap}.trim-input{width:70px;padding:.5rem;border:1px solid var(--border);border-radius:6px;font-size:.875rem;text-align:center}.trim-unit{color:var(--text-secondary)}.btn-remove{background:none;border:none;color:var(--error);cursor:pointer;padding:.5rem;border-radius:6px;transition:background-color .2s}.btn-remove:hover{background-color:#fee}.btn-remove svg{width:20px;height:20px}.settings-section{background-color:var(--surface);border-radius:16px;padding:1.5rem;box-shadow:0 1px 3px var(--shadow)}.settings-section h2{font-size:1.5rem;font-weight:600;margin-bottom:1rem}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem}.setting-group{display:flex;flex-direction:column;gap:.5rem}.setting-group label{font-weight:500;color:var(--text);font-size:.875rem}.input{padding:.75rem;border:1px solid var(--border);border-radius:8px;font-size:1rem;font-family:inherit;transition:border-color .2s}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.controls-section{display:flex;justify-content:center}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.875rem 1.5rem;font-size:1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .2s;font-family:inherit}.btn svg{width:20px;height:20px}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px var(--shadow-lg)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background-color:var(--secondary);color:#fff}.btn-secondary:hover{background-color:var(--secondary-hover)}.btn-success{background-color:var(--success);color:#fff}.btn-success:hover{background-color:var(--success-hover)}.progress-section{background-color:var(--surface);border-radius:16px;padding:2rem;box-shadow:0 1px 3px var(--shadow)}.progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.progress-header h3{font-size:1.25rem;font-weight:600;color:var(--text)}.progress-percent{font-size:1.5rem;font-weight:700;color:var(--primary)}.progress-bar{width:100%;height:12px;background-color:var(--border);border-radius:999px;overflow:hidden;margin-bottom:1rem}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),#3b82f6);border-radius:999px;transition:width .3s ease}.progress-status{color:var(--text-secondary);font-size:.875rem;margin-bottom:1rem}.console-details{margin-top:1rem}.console-details summary{cursor:pointer;font-weight:600;color:var(--text);padding:.5rem;border-radius:6px;transition:background-color .2s}.console-details summary:hover{background-color:var(--background)}.console-log{margin-top:.5rem;padding:1rem;background-color:#1e293b;color:#94a3b8;font-family:Courier New,monospace;font-size:.75rem;border-radius:8px;max-height:200px;overflow-y:auto}.console-log div{margin-bottom:.25rem}.output-section{background-color:var(--surface);border-radius:16px;padding:2rem;box-shadow:0 1px 3px var(--shadow);text-align:center}.output-section h2{font-size:1.5rem;font-weight:600;margin-bottom:1.5rem;color:var(--text)}.output-video{width:100%;max-width:800px;border-radius:12px;margin-bottom:1.5rem;box-shadow:0 4px 6px var(--shadow)}.output-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.toast{position:fixed;bottom:2rem;right:2rem;padding:1rem 1.5rem;background-color:var(--text);color:#fff;border-radius:8px;box-shadow:0 4px 12px var(--shadow-lg);font-weight:500;z-index:1000;animation:slideIn .3s ease}.toast.success{background-color:var(--success)}.toast.error{background-color:var(--error)}.toast.warning{background-color:var(--warning)}@keyframes slideIn{0%{transform:translateY(100px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width: 768px){.app-header h1{font-size:1.5rem}.subtitle{font-size:.875rem}.container{padding:1rem}.video-item{grid-template-columns:auto 80px 1fr;gap:.75rem;padding:.75rem}.video-reorder-section{gap:.375rem}.btn-arrow{width:24px;height:24px}.btn-arrow svg{width:14px;height:14px}.video-preview{width:80px;height:45px}.video-controls{grid-column:2 / -1}.trim-label{font-size:.75rem}.trim-input{width:60px}.btn-remove{grid-column:4;grid-row:1}.settings-grid{grid-template-columns:1fr}.section-header{flex-direction:column;align-items:stretch}.toast{left:1rem;right:1rem;bottom:1rem}.drop-zone{padding:2rem 1rem}.upload-icon{width:48px;height:48px}.drop-text{font-size:1rem}}@media (max-width: 480px){.video-item{grid-template-columns:1fr;gap:.75rem}.video-reorder-section{grid-column:1;grid-row:1;justify-self:start;flex-direction:row;gap:.5rem}.video-arrow-buttons{flex-direction:row}.video-preview{grid-column:1;grid-row:2;width:100%;height:auto;aspect-ratio:16 / 9}.video-info{grid-column:1;grid-row:3}.video-controls{grid-column:1;grid-row:4;justify-content:flex-start}.btn-remove{position:absolute;top:.75rem;right:.75rem}.video-item{position:relative}}