:root{--text: #6b6375;--text-h: #08060d;--bg: #fff;--border: #e5e4e7;--code-bg: #f4f3ec;--accent: #aa3bff;--accent-bg: rgba(170, 59, 255, .1);--accent-border: rgba(170, 59, 255, .5);--social-bg: rgba(244, 243, 236, .5);--shadow: rgba(0, 0, 0, .1) 0 10px 15px -3px, rgba(0, 0, 0, .05) 0 4px 6px -2px;--sans: system-ui, "Segoe UI", Roboto, sans-serif;--heading: system-ui, "Segoe UI", Roboto, sans-serif;--mono: ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;@media (max-width: 1024px){font-size:16px}}@media (prefers-color-scheme: dark){:root{--text: #9ca3af;--text-h: #f3f4f6;--bg: #16171d;--border: #2e303a;--code-bg: #1f2028;--accent: #c084fc;--accent-bg: rgba(192, 132, 252, .15);--accent-border: rgba(192, 132, 252, .5);--social-bg: rgba(47, 48, 58, .5);--shadow: rgba(0, 0, 0, .4) 0 10px 15px -3px, rgba(0, 0, 0, .25) 0 4px 6px -2px}#social .button-icon{filter:invert(1) brightness(2)}}body{margin:0}#root{width:1126px;max-width:100%;margin:0 auto;text-align:center;border-inline:1px solid var(--border);min-height:100svh;display:flex;flex-direction:column;box-sizing:border-box}h1,h2{font-family:var(--heading);font-weight:500;color:var(--text-h)}h1{font-size:56px;letter-spacing:-1.68px;margin:32px 0;@media (max-width: 1024px){font-size:36px;margin:20px 0}}h2{font-size:24px;line-height:118%;letter-spacing:-.24px;margin:0 0 8px;@media (max-width: 1024px){font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);display:inline-flex;border-radius:4px;color:var(--text-h)}code{font-size:15px;line-height:135%;padding:4px 8px;background:var(--code-bg)}*{box-sizing:border-box}:root{--bg: #f8fafc;--bg-card: #ffffff;--text: #1e293b;--text-muted: #64748b;--primary: #3b82f6;--primary-hover: #2563eb;--primary-light: #dbeafe;--border: #e2e8f0;--border-hover: #cbd5e1;--error: #ef4444;--error-bg: #fef2f2;--success: #22c55e;--success-bg: #f0fdf4;--warning: #f59e0b;--warning-bg: #fffbeb;--shadow: 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: 12px;--radius-sm: 8px;--transition: .2s ease}*{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column}.header{padding:32px 24px 24px;text-align:center}.header-content{display:flex;align-items:center;justify-content:center;gap:16px;max-width:720px;margin:0 auto}.logo{width:48px;height:48px;color:var(--primary);flex-shrink:0}.header-text h1{font-size:2rem;font-weight:700;letter-spacing:-.02em;color:var(--text);margin-bottom:4px}.header-text p{font-size:1rem;color:var(--text-muted);font-weight:400}.main{flex:1;max-width:720px;width:100%;margin:0 auto;padding:24px}.section{margin-bottom:32px}.upload-section{margin-bottom:24px}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:48px 24px;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--bg-card);position:relative}.drop-zone:hover,.drop-zone.active{border-color:var(--primary);background:var(--primary-light)}.drop-zone.has-file{border-style:solid;border-color:var(--border);padding:16px}.drop-zone.has-file:hover{border-color:var(--border-hover);background:var(--bg-card)}.drop-content{display:flex;flex-direction:column;align-items:center;gap:12px}.upload-icon{width:48px;height:48px;color:var(--primary)}.drop-content p{font-size:1.1rem;font-weight:500;color:var(--text)}.drop-content .hint{font-size:.875rem;color:var(--text-muted);font-weight:400}.file-info{display:flex;align-items:center;gap:16px;padding:8px}.file-icon{font-size:2.5rem}.file-details{flex:1;text-align:left;display:flex;flex-direction:column;gap:4px}.file-name{font-weight:600;font-size:1rem;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-size{font-size:.875rem;color:var(--text-muted)}.remove-btn{width:32px;height:32px;border:none;background:var(--bg);border-radius:var(--radius-sm);font-size:1.25rem;color:var(--text-muted);cursor:pointer;transition:all var(--transition);display:flex;align-items:center;justify-content:center}.remove-btn:hover{background:var(--error-bg);color:var(--error)}.convert-section{background:var(--bg-card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.format-selector{margin-bottom:20px}.format-selector label{display:block;font-weight:600;margin-bottom:8px;color:var(--text)}.format-selector select{width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:1rem;background:var(--bg-card);color:var(--text);cursor:pointer;transition:all var(--transition)}.format-selector select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.format-selector select:disabled{background:var(--bg);color:var(--text-muted);cursor:not-allowed}.convert-btn{width:100%;padding:14px 24px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);display:flex;align-items:center;justify-content:center;gap:8px}.convert-btn:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-lg)}.convert-btn:active:not(:disabled){transform:translateY(0)}.convert-btn:disabled{background:var(--border);color:var(--text-muted);cursor:not-allowed}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.spinner-small{width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.progress-text{font-size:.875rem;opacity:.9}.method-badge{margin-top:12px;padding:8px 12px;background:var(--primary-light);color:var(--primary);border-radius:var(--radius-sm);font-size:.875rem;font-weight:500;text-align:center}.error{margin-top:16px;padding:12px 16px;background:var(--error-bg);color:var(--error);border-radius:var(--radius-sm);font-size:.875rem;display:flex;align-items:center;gap:8px}.result-section{animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.result-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);display:flex;align-items:center;gap:16px;margin-bottom:16px;flex-wrap:wrap}.result-icon{font-size:3rem}.result-info{flex:1;text-align:left;display:flex;flex-direction:column;gap:4px;min-width:200px}.result-name{font-weight:600;font-size:1rem;color:var(--text)}.result-size{font-size:.875rem;color:var(--text-muted)}.result-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.download-btn{padding:12px 24px;background:var(--success);color:#fff;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);display:flex;align-items:center;gap:8px}.download-btn:hover{background:#16a34a;transform:translateY(-1px);box-shadow:var(--shadow-lg)}.download-btn svg{width:20px;height:20px}.cloud-btn{padding:12px 24px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);display:flex;align-items:center;gap:8px}.cloud-btn:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-lg)}.cloud-btn:disabled{background:var(--border);color:var(--text-muted);cursor:not-allowed}.convert-another{width:100%;padding:12px 24px;background:transparent;color:var(--primary);border:2px solid var(--primary);border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition)}.convert-another:hover{background:var(--primary-light)}.cloud-result{margin-top:12px;padding:12px 16px;background:var(--success-bg);border:1px solid var(--success);border-radius:var(--radius-sm);width:100%}.cloud-link{display:inline-flex;align-items:center;color:var(--success);cursor:pointer;font-weight:500;font-size:.875rem;transition:opacity var(--transition)}.cloud-link:hover{opacity:.8}.features{margin-top:48px}.features h2{text-align:center;font-size:1.5rem;font-weight:700;margin-bottom:24px;color:var(--text)}.format-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:32px}.format-category{background:var(--bg-card);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow);transition:all var(--transition)}.format-category:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.category-icon{font-size:2.5rem;margin-bottom:12px}.format-category h3{font-size:1.125rem;font-weight:600;margin-bottom:8px;color:var(--text)}.format-category p{font-size:.875rem;color:var(--text-muted);line-height:1.6}.feature-tag{display:inline-block;margin-top:12px;padding:4px 10px;background:var(--primary-light);color:var(--primary);border-radius:999px;font-size:.75rem;font-weight:600}.server-note{background:var(--bg-card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}.server-note h3{font-size:1rem;font-weight:600;margin-bottom:12px;color:var(--text)}.server-note ul{list-style:none;margin-bottom:16px}.server-note li{padding:8px 0;border-bottom:1px solid var(--border);font-size:.875rem;color:var(--text-muted)}.server-note li:last-child{border-bottom:none}.server-note li strong{color:var(--text)}.server-note p{font-size:.875rem;color:var(--text-muted)}.supabase-note{background:var(--bg-card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border);margin-top:24px}.supabase-note h3{font-size:1rem;font-weight:600;margin-bottom:12px;color:var(--text)}.supabase-note p{font-size:.875rem;color:var(--text-muted);line-height:1.6}.supabase-note code{background:var(--bg);padding:2px 6px;border-radius:4px;font-size:.8rem;color:var(--primary)}.status-ok{color:var(--success);font-weight:600}.status-warn{color:var(--warning);font-weight:600}.footer{text-align:center;padding:24px;color:var(--text-muted);font-size:.875rem;border-top:1px solid var(--border);margin-top:auto}@media (max-width: 640px){.header-text h1{font-size:1.75rem}.main{padding:16px}.drop-zone{padding:32px 16px}.result-card{flex-direction:column;text-align:center}.result-info{text-align:center;min-width:auto}.result-actions{justify-content:center}.format-grid{grid-template-columns:1fr}.header-content{flex-direction:column;gap:12px}}