:root{--bg-primary: #0a0a0b;--bg-secondary: #111113;--bg-tertiary: #18181b;--bg-card: #141416;--bg-card-hover: #1c1c1f;--bg-elevated: #202024;--text-primary: #ffffff;--text-secondary: #a1a1aa;--text-tertiary: #71717a;--text-muted: #52525b;--accent-primary: #ff6363;--accent-primary-hover: #ff7a7a;--accent-secondary: #3b82f6;--accent-success: #22c55e;--accent-warning: #f59e0b;--accent-error: #ef4444;--border-primary: #27272a;--border-secondary: #3f3f46;--border-hover: #52525b;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .5);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .5);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--spacing-3xl: 64px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, 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6px}pre{padding:var(--spacing-md);overflow-x:auto}input,select,textarea{font-family:inherit;font-size:var(--text-base);color:var(--text-primary);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #ff63631a}input::placeholder,textarea::placeholder{color:var(--text-muted)}button{font-family:inherit;font-size:var(--text-sm);font-weight:var(--font-medium);cursor:pointer;border:none;border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);transition:all var(--transition-fast);display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm)}button:disabled{opacity:.5;cursor:not-allowed}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-secondary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}::selection{background:#ff63634d;color:var(--text-primary)}:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.container{max-width:var(--max-width-xl);margin:0 auto;padding:0 var(--spacing-lg)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.header{position:sticky;top:0;z-index:100;background:#0a0a0bd9;backdrop-filter:blur(12px);border-bottom:1px solid var(--border-primary)}.header-container{max-width:var(--max-width-xl);margin:0 auto;padding:0 var(--spacing-lg);height:64px;display:flex;align-items:center;justify-content:space-between}.header-logo{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--text-primary);text-decoration:none;transition:opacity var(--transition-fast)}.header-logo:hover{opacity:.8;color:var(--text-primary)}.header-logo-icon{width:28px;height:28px;color:var(--accent-primary)}.header-logo-text{font-size:var(--text-lg);font-weight:var(--font-bold);letter-spacing:-.02em}.header-nav{display:flex;align-items:center;gap:var(--spacing-xs)}.header-nav-link{padding:var(--spacing-sm) var(--spacing-md);color:var(--text-secondary);text-decoration:none;font-size:var(--text-sm);font-weight:var(--font-medium);border-radius:var(--radius-md);transition:all var(--transition-fast)}.header-nav-link:hover{color:var(--text-primary);background:var(--bg-tertiary)}.header-nav-link.active{color:var(--text-primary);background:var(--bg-card)}.header-feedback-btn{background:none;border:none;cursor:pointer;font-family:inherit}.header-actions{display:flex;align-items:center;gap:var(--spacing-md)}.header-github-link{display:flex;align-items:center;justify-content:center;width:36px;height:36px;color:var(--text-secondary);border-radius:var(--radius-md);transition:all var(--transition-fast)}.header-github-link:hover{color:var(--text-primary);background:var(--bg-tertiary)}@media (max-width: 768px){.header-nav{display:none}.header-container{padding:0 var(--spacing-md)}}.footer{margin-top:auto;background:var(--bg-secondary);border-top:1px solid var(--border-primary)}.footer-container{max-width:var(--max-width-xl);margin:0 auto;padding:var(--spacing-3xl) var(--spacing-lg) var(--spacing-xl)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--spacing-3xl)}.footer-brand{max-width:280px}.footer-logo{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--text-primary);text-decoration:none;font-size:var(--text-lg);font-weight:var(--font-bold);margin-bottom:var(--spacing-md)}.footer-logo:hover{color:var(--text-primary)}.footer-logo-icon{width:24px;height:24px;color:var(--accent-primary)}.footer-tagline{font-size:var(--text-sm);color:var(--text-tertiary);line-height:var(--leading-relaxed)}.footer-links-section{display:flex;flex-direction:column}.footer-links-title{font-size:var(--text-xs);font-weight:var(--font-semibold);color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--spacing-md)}.footer-links{list-style:none;display:flex;flex-direction:column;gap:var(--spacing-sm)}.footer-link{display:inline-flex;align-items:center;gap:var(--spacing-xs);color:var(--text-secondary);text-decoration:none;font-size:var(--text-sm);transition:color 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#ef4444);color:#fff;font-size:2rem;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem}.error-title{font-size:1.5rem;margin-bottom:.5rem;color:var(--color-text, #fff)}.error-message{color:var(--color-text-secondary, #a1a1aa);margin-bottom:1.5rem}.error-actions{display:flex;gap:1rem;justify-content:center}.error-details{margin-top:2rem;text-align:left;background:var(--color-surface, #1a1a1b);padding:1rem;border-radius:.5rem}.error-details pre{overflow-x:auto;font-size:.75rem;white-space:pre-wrap;word-break:break-word}.home-page{display:flex;flex-direction:column}.hero{padding:var(--spacing-3xl) 0;background:linear-gradient(180deg,var(--bg-secondary) 0%,var(--bg-primary) 100%);border-bottom:1px solid var(--border-primary)}.hero-content{text-align:center;max-width:720px;margin:0 auto 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0}.section-header{text-align:center;margin-bottom:var(--spacing-xl)}.section-title{font-size:var(--text-3xl);font-weight:var(--font-bold);margin-bottom:var(--spacing-sm)}.section-description{font-size:var(--text-base);color:var(--text-secondary)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--spacing-md)}.tool-card{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius-lg);text-decoration:none;transition:all 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var(--transition-base);background:var(--bg-secondary);position:relative}.video-uploader:hover{border-color:var(--border-hover);background:var(--bg-tertiary)}.video-uploader.dragging{border-color:var(--accent-primary);background:#ff63630d;border-style:solid}.video-uploader-input{display:none}.video-uploader-icon{width:80px;height:80px;margin:0 auto var(--spacing-lg);color:var(--text-tertiary);transition:color var(--transition-base),transform var(--transition-base)}.video-uploader:hover .video-uploader-icon{color:var(--text-secondary);transform:translateY(-4px)}.video-uploader.dragging .video-uploader-icon{color:var(--accent-primary);transform:scale(1.1)}.video-uploader-icon 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var(--transition-fast)}.video-preview-remove:hover{background:#ef44441a;border-color:var(--accent-error);color:var(--accent-error)}.video-preview-remove svg{flex-shrink:0}.number-input-group{display:flex;flex-direction:column;gap:var(--spacing-xs, 4px)}.number-input-label{font-size:var(--text-sm, .875rem);font-weight:var(--font-medium, 500);color:var(--text-primary, #ffffff)}.number-input-row{display:flex;align-items:center;gap:var(--spacing-xs, 4px)}.number-input-wrapper{position:relative;display:inline-flex}.number-input-field{width:80px;padding:var(--spacing-sm, 8px);padding-right:24px;text-align:center;font-family:var(--font-mono, "Monaco", "Consolas", monospace);font-size:var(--text-sm, .875rem);background:var(--bg-tertiary, #2a2a2a);border:1px solid var(--border-primary, #333);border-radius:var(--radius-md, 6px);color:var(--text-primary, #ffffff);transition:border-color .15s ease}.number-input-field:focus{outline:none;border-color:var(--accent-primary, #ff6363)}.number-input-field:disabled{opacity:.5;cursor:not-allowed}.number-input-spinners{position:absolute;right:1px;top:1px;bottom:1px;display:flex;flex-direction:column;width:18px;border-radius:0 5px 5px 0;overflow:hidden}.number-input-spin-up,.number-input-spin-down{flex:1;display:flex;align-items:center;justify-content:center;padding:0;background:var(--bg-tertiary, #2a2a2a);border:none;border-left:1px solid var(--border-primary, #333);color:var(--text-secondary, #a1a1aa);cursor:pointer;transition:all .15s ease}.number-input-spin-up{border-bottom:1px solid var(--border-primary, #333)}.number-input-spin-up:hover:not(:disabled),.number-input-spin-down:hover:not(:disabled){background:var(--bg-elevated, #3a3a3a);color:var(--text-primary, #ffffff)}.number-input-spin-up:active:not(:disabled),.number-input-spin-down:active:not(:disabled){background:var(--bg-secondary, 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var(--transition-fast);font-size:var(--text-sm);font-weight:var(--font-medium)}.tab:hover{color:var(--text-primary);background:var(--bg-tertiary)}.tab.active{background:var(--bg-elevated);color:var(--text-primary);box-shadow:var(--shadow-sm)}.progress{width:100%;height:4px;background:var(--bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.progress-bar{height:100%;background:linear-gradient(90deg,var(--accent-primary) 0%,#ff4d4d 100%);border-radius:var(--radius-full);transition:width var(--transition-base)}.badge{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:4px 10px;font-size:var(--text-xs);font-weight:var(--font-medium);border-radius:var(--radius-full);background:var(--bg-tertiary);color:var(--text-secondary)}.badge-primary{background:#ff636326;color:var(--accent-primary)}.badge-success{background:#22c55e26;color:var(--accent-success)}.divider{width:100%;height:1px;background:var(--border-primary);margin:var(--spacing-lg) 0}.icon-btn{width:36px;height:36px;padding:0;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--border-primary);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.icon-btn:hover{background:var(--bg-tertiary);border-color:var(--border-secondary);color:var(--text-primary)}.tooltip{position:relative}.tooltip:after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translate(-50%);padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-elevated);border:1px solid var(--border-primary);border-radius:var(--radius-sm);font-size:var(--text-xs);color:var(--text-primary);white-space:nowrap;opacity:0;visibility:hidden;transition:all var(--transition-fast);margin-bottom:var(--spacing-xs)}.tooltip:hover:after{opacity:1;visibility:visible}.dropdown{position:relative}.dropdown-menu{position:absolute;top:100%;left:0;min-width:200px;background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius-lg);padding:var(--spacing-xs);box-shadow:var(--shadow-xl);z-index:100;opacity:0;visibility:hidden;transform:translateY(8px);transition:all var(--transition-fast)}.dropdown.open .dropdown-menu{opacity:1;visibility:visible;transform:translateY(4px)}.dropdown-item{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.dropdown-item:hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;visibility:hidden;transition:all var(--transition-base)}.modal-overlay.open{opacity:1;visibility:visible}.modal{background:var(--bg-card);border:1px solid var(--border-primary);border-radius:var(--radius-xl);padding:var(--spacing-xl);max-width:500px;width:90%;max-height:90vh;overflow-y:auto;transform:scale(.95);transition:transform var(--transition-base)}.modal-overlay.open .modal{transform:scale(1)}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-lg)}.modal-title{font-size:var(--text-xl);font-weight:var(--font-semibold)}.spinner{width:24px;height:24px;border:2px solid var(--border-primary);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.upload-zone{border:2px dashed var(--border-secondary);border-radius:var(--radius-xl);padding:var(--spacing-3xl) var(--spacing-xl);text-align:center;cursor:pointer;transition:all var(--transition-base);background:var(--bg-secondary)}.upload-zone:hover,.upload-zone.dragging{border-color:var(--accent-primary);background:#ff63630d}.upload-zone-icon{width:64px;height:64px;margin:0 auto var(--spacing-lg);color:var(--text-tertiary)}.upload-zone-title{font-size:var(--text-lg);font-weight:var(--font-medium);color:var(--text-primary);margin-bottom:var(--spacing-sm)}.upload-zone-description{font-size:var(--text-sm);color:var(--text-tertiary)}.video-preview{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-secondary)}.video-preview video{width:100%;display:block}.video-preview-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.8) 0%,transparent 50%);display:flex;align-items:flex-end;padding:var(--spacing-lg)}.grid{display:grid;gap:var(--spacing-lg)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.text-center{text-align:center}.text-sm{font-size:var(--text-sm)}.text-muted{color:var(--text-tertiary)}.selectable-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.selectable-item{display:flex;justify-content:space-between;align-items:center;width:100%;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);font-size:var(--text-sm);font-weight:var(--font-medium);color:var(--text-primary)}.selectable-item:hover{border-color:var(--border-secondary);background:var(--bg-elevated)}.selectable-item.active{border-color:var(--accent-primary);background:#ff63631a}.selectable-item-label{color:var(--text-primary)}.selectable-item-meta{font-size:var(--text-xs);color:var(--text-tertiary)}.color-swatch{width:32px;height:32px;border:2px solid var(--border-primary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);padding:0}.color-swatch:hover{transform:scale(1.1)}.color-swatch.active{border-color:var(--accent-primary);box-shadow:0 0 0 2px #ff63634d}