:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#f6f7fb;color:#111}.page{max-width:1100px;margin:0 auto;padding:24px}.header{display:flex;gap:16px;align-items:flex-end;justify-content:space-between;flex-wrap:wrap}h1{margin:0;font-size:28px}.muted{color:#555;margin:6px 0 0}.add{display:flex;gap:8px}.add input{width:min(420px,70vw);padding:10px 12px;border:1px solid #ddd;border-radius:10px;outline:none}.add button{padding:10px 14px;border:1px solid #111;border-radius:10px;background:#111;color:#fff;cursor:pointer}.error{margin-top:14px;padding:12px;background:#ffe7e7;border:1px solid #ffb4b4;border-radius:12px}.board{margin-top:18px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}@media (max-width: 900px){.board{grid-template-columns:1fr}}.col{background:#fff;border:1px solid #e7e7e7;border-radius:16px;padding:14px;box-shadow:0 2px 10px #0000000a}.colHead{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.col h2{margin:0;font-size:16px}.pill{font-size:12px;padding:4px 10px;border-radius:999px;background:#f0f0f0;border:1px solid #e3e3e3}.cards{display:flex;flex-direction:column;gap:10px}.card{border:1px solid #eee;border-radius:14px;padding:12px;background:#fafafa}.cardTitle{font-weight:600;margin-bottom:10px}.cardActions{display:flex;gap:8px}.cardActions button{border:1px solid #ddd;background:#fff;padding:6px 10px;border-radius:10px;cursor:pointer}.cardActions button:disabled{opacity:.4;cursor:not-allowed}.cardActions .danger{border-color:#ffb4b4}.footer{margin-top:18px}code{background:#eee;padding:2px 6px;border-radius:6px}