/* The showcase shares the dashboard's system (src/packages/web/.../app.css):
   one sans for the interface, monospace for data, lichess's warm grounds
   with achromatic ink, one blue accent on links and focus only. */
:root {
  --ground: #edebe9; --panel: #ffffff; --sunk: #f5f4f2;
  --ink: #2b2b2b; --ink-soft: #6b6b6b; --ink-faint: #757575;
  --rule: #d9d9d9; --rule-strong: #b4b4b4;
  --accent: #1b78d0; --ok: #2e7d32; --ok-soft: #e6f2e7; --flag: #b3261e; --flag-soft: #fbeae9;
  --f0: .75rem; --f1: .82rem; --f2: .9rem; --f3: 1rem; --f4: 1.15rem; --f5: 1.5rem;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { background: var(--ground); color: var(--ink); font: var(--f2)/1.5 var(--sans); }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: .95em; }

header { display: flex; align-items: baseline; gap: 2rem; padding: .9rem 1.5rem; background: var(--panel); border-bottom: 1px solid var(--rule); flex-wrap: wrap; }
.brand .title { color: var(--ink); font-weight: 600; font-size: var(--f4); }
.brand .tagline { color: var(--ink-soft); margin-left: .75rem; font-size: var(--f1); }
nav { display: flex; gap: .25rem; margin-left: auto; }
nav a { color: var(--ink-soft); padding: .3rem .7rem; border-radius: 4px; }
nav a.active { color: var(--ink); background: var(--sunk); }
main { flex: 1; max-width: 1100px; width: 100%; margin: 0 auto; padding: 1.5rem; }
footer { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 1.5rem; color: var(--ink-faint); font-size: var(--f1); border-top: 1px solid var(--rule); flex-wrap: wrap; }

h1 { font-size: var(--f5); font-weight: 600; margin: 0 0 .75rem; line-height: 1.25; }
.lede { color: var(--ink-soft); margin-top: 0; }
.prose p { max-width: 42rem; }
.links { color: var(--ink-faint); }
.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 420px); gap: 2rem; align-items: start; }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } .sticky { position: static; } }
.board-col { display: flex; flex-direction: column; gap: .6rem; }
.board-col.sticky { position: sticky; top: 1rem; }
.board { width: 100%; aspect-ratio: 1; background: var(--panel); border: 1px solid var(--rule); border-radius: 4px; }
.readout { font-family: var(--mono); font-size: var(--f1); color: var(--ink-soft); min-height: 1.4em; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.readout strong { color: var(--ink); }
.stepper { display: flex; gap: .4rem; }
button { font: inherit; padding: .35rem .8rem; background: var(--panel); color: var(--ink); border: 1px solid var(--rule-strong); border-radius: 4px; cursor: pointer; }
button:hover { border-color: var(--accent); }
button:focus-visible, select:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:disabled { color: var(--ink-faint); border-color: var(--rule); cursor: default; }
.line { font-size: var(--f1); color: var(--ink-soft); margin: 0; word-break: break-word; }
.line .played { color: var(--ink); font-weight: 600; }

.numbers { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .75rem 1.5rem; margin: 1.25rem 0; padding: 1rem; background: var(--panel); border: 1px solid var(--rule); border-radius: 4px; }
.numbers div { display: flex; flex-direction: column; }
.numbers dt { font-size: var(--f0); color: var(--ink-faint); text-transform: uppercase; letter-spacing: .04em; order: 2; }
.numbers dd { margin: 0; font-family: var(--mono); font-size: var(--f4); order: 1; }

.controls { display: flex; gap: 1.25rem; align-items: baseline; margin: .75rem 0; font-size: var(--f1); color: var(--ink-soft); flex-wrap: wrap; }
.controls label { display: flex; gap: .4rem; align-items: baseline; }
select { font: inherit; font-size: var(--f1); padding: .2rem .4rem; border: 1px solid var(--rule-strong); border-radius: 4px; background: var(--panel); color: var(--ink); }
.count { margin-left: auto; font-family: var(--mono); }

table.data { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--rule); border-radius: 4px; font-size: var(--f1); }
table.data th, table.data td { padding: .35rem .6rem; text-align: left; border-bottom: 1px solid var(--rule); white-space: nowrap; }
table.data th { font-weight: 600; color: var(--ink-soft); font-size: var(--f0); text-transform: uppercase; letter-spacing: .04em; background: var(--sunk); position: sticky; top: 0; }
table.sortable th { cursor: pointer; user-select: none; }
table.sortable th.sorted::after { content: " ▾"; } table.sortable th.sorted.asc::after { content: " ▴"; }
table.data td.num { font-family: var(--mono); text-align: right; }
table.data th.num { text-align: right; }
table.data tbody tr { cursor: pointer; }
table.data tbody tr:hover { background: var(--sunk); }
table.data tbody tr.selected { background: #e3eef9; }
table.data tbody tr.marker td { color: var(--ink-faint); }
.list-col { min-width: 0; overflow-x: auto; }

.status { min-height: 1.5em; font-weight: 600; }
.status.ok { color: var(--ok); } .status.bad { color: var(--flag); }
.hint { color: var(--ink-faint); font-size: var(--f1); }

/* cm-chessboard: keep the inline coordinates and the promotion dialog readable */
.cm-chessboard .coordinates { font-family: var(--mono); }