:root{--bg:#f6f7fb;--card:#fff;--text:#1a1d29;--muted:#6b7280;--border:#e5e7eb;--accent:#4f46e5;--danger:#b91c1c;--danger-bg:#fef2f2}@media (prefers-color-scheme:dark){:root{--bg:#0f1117;--card:#181b24;--text:#e8eaf0;--muted:#9aa1b2;--border:#2a2f3c;--accent:#818cf8;--danger:#fca5a5;--danger-bg:#2a1518}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.6}.container{max-width:760px;margin:0 auto;padding:40px 16px 60px}h1{margin:0;font-size:2rem}.sub{color:var(--muted);margin:4px 0 24px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px;margin-bottom:16px}.label{display:block;font-size:.8rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px}select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font:inherit}textarea{resize:vertical;min-height:200px}select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}.counter{text-align:right;font-size:.8rem;color:var(--muted);margin-top:4px}.counter.bad{color:var(--danger);font-weight:600}.row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;margin-top:12px}.field{flex:1 1;min-width:140px}.actions{display:flex;gap:8px}.btn{padding:10px 18px;border:0;border-radius:10px;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.secondary{background:var(--danger)}.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.btn.small{padding:4px 12px;font-size:.85rem}.error{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger);border-radius:10px;padding:12px 16px;margin-bottom:16px}.result-head{display:flex;justify-content:space-between;align-items:center}.summary{white-space:pre-wrap}.cursor{display:inline-block;width:8px;height:1em;background:var(--accent);margin-left:2px;vertical-align:text-bottom;animation:blink 1s steps(2) infinite}@keyframes blink{50%{opacity:0}}.skeleton div{height:14px;border-radius:6px;margin:10px 0;background:linear-gradient(90deg,var(--border),var(--bg),var(--border));background-size:200% 100%;animation:shimmer 1.4s infinite}.skeleton .short{width:60%}@keyframes shimmer{to{background-position:-200% 0}}footer{text-align:center;color:var(--muted);font-size:.8rem;margin-top:24px}