:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px}a{text-decoration:none}button{font-family:inherit}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #3b82f6;--primary-hover: #2563eb;--secondary-color: #64748b;--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--background: #f8fafc;--surface: #ffffff;--surface-hover: #f1f5f9;--text-primary: #1e293b;--text-secondary: #64748b;--border-color: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: 8px;--radius-lg: 12px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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p{font-size:1.125rem;font-weight:500;color:var(--text-primary);margin-bottom:.5rem}.drop-subtitle{font-size:.875rem;color:var(--text-secondary)}.upload-progress{background:var(--surface);border-radius:var(--radius);padding:1.5rem;margin-bottom:2rem;box-shadow:var(--shadow-sm)}.progress-bar{height:.5rem;background:var(--border-color);border-radius:1rem;overflow:hidden;margin-bottom:1rem}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary-color),var(--primary-hover));border-radius:1rem;animation:progress-pulse 2s ease-in-out infinite}@keyframes progress-pulse{0%,to{opacity:1}50%{opacity:.7}}.loading{text-align:center;padding:4rem 0}.spinner{width:3rem;height:3rem;border:3px solid var(--border-color);border-top:3px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:4rem 0;background:var(--surface);border-radius:var(--radius-lg);border:2px dashed var(--border-color)}.empty-icon{width:4rem;height:4rem;color:var(--text-secondary);margin-bottom:1rem}.empty-state h3{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:.5rem}.empty-state p{color:var(--text-secondary)}.video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.video-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;transition:all .3s ease;border:1px solid var(--border-color)}.video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.video-thumbnail{position:relative;height:180px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center}.video-icon{width:4rem;height:4rem;color:#fff;opacity:.8}.video-overlay{position:absolute;top:.75rem;right:.75rem;background:#000000b3;color:#fff;padding:.25rem .5rem;border-radius:var(--radius);font-size:.75rem;font-weight:500}.video-info{padding:1rem}.video-title{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:.25rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.video-meta{font-size:.875rem;color:var(--text-secondary)}.video-actions{display:flex;gap:.5rem;padding:0 1rem 1rem;justify-content:flex-end}.btn-icon{display:flex;align-items:center;justify-content:center;width:2rem;height:2rem;border:none;background:var(--surface-hover);color:var(--text-secondary);border-radius:var(--radius);cursor:pointer;transition:all .2s ease}.btn-icon:hover{background:var(--border-color);color:var(--text-primary);transform:scale(1.1)}.btn-icon.copied,.btn-icon.btn-success{background:var(--success-color);color:#fff}.btn-icon.btn-success:hover{background:#059669}.btn-icon.btn-danger{background:var(--danger-color);color:#fff}.btn-icon.btn-danger:hover{background:#dc2626}.edit-form{display:flex;align-items:center;gap:.5rem}.edit-input{flex:1;padding:.5rem;border:1px solid var(--border-color);border-radius:var(--radius);font-size:.875rem;background:var(--background)}.edit-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #3b82f61a}.edit-actions{display:flex;gap:.25rem}@media(max-width:768px){.header-content{flex-direction:column;gap:1rem;padding:1rem}.container{padding:0 1rem}.video-grid{grid-template-columns:1fr}.drop-zone{padding:2rem}.video-actions{justify-content:center}}@media(max-width:480px){.logo h1{font-size:1.25rem}.upload-button{padding:.625rem 1.25rem;font-size:.8125rem}.video-grid{gap:1rem}}@media(prefers-color-scheme:dark){:root{--background: #0f172a;--surface: #1e293b;--surface-hover: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--border-color: #334155}.drop-zone,.empty-state,.video-card{border-color:#475569}.edit-input{background:#334155;border-color:#475569;color:var(--text-primary)}}