:root{--bg:#f4f5f7;--surface:#fff;--text:#172b4d;--muted:#6b778c;--border:#dfe1e6;--accent:#0052cc;--danger:#bf2600;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font:16px/1.5 system-ui,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#161a1d;--surface:#22272b;--text:#dee4ea;--muted:#9fadbc;--border:#38414a;--accent:#579dff;--danger:#ff8f73}}*{box-sizing:border-box}body{min-height:100svh;margin:0}button{font:inherit;color:inherit;border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:4px;padding:2px 8px}button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.4;cursor:not-allowed}input{font:inherit;color:inherit;background:var(--surface);border:1px solid var(--border);border-radius:4px;width:100%;padding:6px 8px}input:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.app{max-width:1100px;margin:0 auto;padding:24px 16px 48px}.app__header h1{margin:0;font-size:28px;font-weight:600}.app__hint{color:var(--muted);margin:4px 0 24px;font-size:14px}.board{grid-template-columns:repeat(3,1fr);align-items:start;gap:16px;display:grid}@media (width<=720px){.board{grid-template-columns:1fr}}.column{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:12px}.column--drop-target{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.column__heading{text-transform:uppercase;letter-spacing:.04em;color:var(--muted);justify-content:space-between;align-items:center;gap:8px;margin:0 0 12px;font-size:14px;font-weight:600;display:flex}.column__count{font-variant-numeric:tabular-nums}.column__cards{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.column__empty{color:var(--muted);padding:8px 0;font-size:14px}.card{background:var(--bg);border:1px solid var(--border);cursor:grab;border-radius:6px;padding:10px}.card--editing{cursor:auto}.card__head{align-items:flex-start;gap:6px;display:flex}.card__open{text-align:left;overflow-wrap:anywhere;border:none;border-radius:2px;flex:1;padding:0;font-weight:500}.card__open:hover:not(:disabled){color:var(--accent)}.card__badge{width:14px;height:14px;color:var(--muted);flex-shrink:0;margin-top:4px}.card__actions{flex-wrap:wrap;gap:4px;margin-top:8px;font-size:13px;display:flex}.card__delete:hover:not(:disabled){border-color:var(--danger);color:var(--danger)}.add-card{gap:4px;margin-top:12px;display:flex}.add-card button{flex-shrink:0}.overlay{background:#00000080;justify-content:center;align-items:flex-start;padding:48px 16px;display:flex;position:fixed;inset:0;overflow-y:auto}.modal{background:var(--surface);border:1px solid var(--border);border-radius:8px;width:100%;max-width:620px;padding:20px}.modal:focus-visible{outline:none}.modal__header{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.modal__title{overflow-wrap:anywhere;margin:0;font-size:20px;font-weight:600}.modal__section{text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:24px 0 8px;font-size:13px;font-weight:600}.modal__placeholder{text-align:left;width:100%;color:var(--muted);background:var(--bg);padding:12px}.modal__description{background:var(--bg);border:1px solid var(--border);overflow-wrap:anywhere;border-radius:6px;padding:4px 12px}.modal__description ul,.modal__description ol{padding-left:20px}.modal__description code{background:var(--surface);border-radius:3px;padding:1px 4px;font-size:.9em}.modal__description a{color:var(--accent)}.modal__editor{font:inherit;color:inherit;background:var(--bg);border:1px solid var(--border);resize:vertical;border-radius:6px;width:100%;padding:10px 12px}.modal__editor:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.modal__editor-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:8px;display:flex}.modal__actions{gap:8px;margin-top:8px;display:flex}.modal__editor-footer .modal__actions{margin-top:0}.modal__hint{color:var(--muted);font-size:13px}