:root {
  --bg: #f6f5f2; --card: #ffffff; --ink: #1d1d1f; --muted: #6b6b70;
  --line: #e3e1dc; --accent: #2f5bea; --accent-ink: #ffffff; --warn: #b42318;
  --good: #1a7f37; --good-bg: #e7f5ec; --bad-bg: #fdecea; --me-bg: #eef2fe;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416; --card: #1e1e22; --ink: #f2f2f3; --muted: #a0a0a8;
    --line: #2e2e34; --accent: #6d8cff; --accent-ink: #0b0b0d; --warn: #ff6b5f;
    --good: #4ac26b; --good-bg: #13301d; --bad-bg: #3a1a18; --me-bg: #1f2640;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", "Noto Sans Thai", sans-serif;
}
main { max-width: 560px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 1.4rem; margin: 0 0 4px; }
.sub { color: var(--muted); margin: 0 0 20px; font-size: .95rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 16px; }
label { display: block; font-weight: 600; margin-bottom: 8px; }
input { width: 100%; padding: 12px; font: inherit; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); }
button {
  font: inherit; font-weight: 600; padding: 12px 18px; border: 0; border-radius: 10px;
  background: var(--accent); color: var(--accent-ink); cursor: pointer;
}
button.ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); }
button:disabled { opacity: .45; cursor: default; }
.row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.error { color: var(--warn); margin-top: 10px; min-height: 1.5em; }
.big { font-size: 5rem; font-weight: 800; text-align: center; line-height: 1; margin: 12px 0; font-variant-numeric: tabular-nums; }
.center { text-align: center; }
.muted { color: var(--muted); }
.pill { display: inline-block; font-size: .8rem; padding: 2px 10px; border-radius: 99px; border: 1px solid var(--line); color: var(--muted); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 4px; border-bottom: 1px solid var(--line); }
th { font-size: .8rem; color: var(--muted); font-weight: 600; }
td.num { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
tr.me td { color: var(--accent); }
.hidden { display: none; }
.theme { font-size: 1.35rem; font-weight: 700; margin: 2px 0 0; line-height: 1.3; }
.end-label { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; margin: 4px 0; }
.board { list-style: none; margin: 0; padding: 0; }
.board li { display: flex; align-items: center; gap: 10px; padding: 10px 8px; border-bottom: 1px solid var(--line); border-radius: 8px; }
.board li.me { background: var(--me-bg); }
.board .pos { width: 1.6em; text-align: center; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.board .who { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.board .nm { font-size: .8rem; color: var(--muted); }
.board .wd { font-weight: 600; overflow-wrap: anywhere; }
.board .moves { display: flex; gap: 4px; }
.board button.mv { padding: 6px 10px; background: transparent; color: var(--ink); border: 1px solid var(--line); border-radius: 8px; font-size: .85rem; }
.board .num { font-weight: 800; font-variant-numeric: tabular-nums; white-space: nowrap; }
.board .num.ok { color: var(--good); }
.board .num.bad { color: var(--warn); }
.banner { text-align: center; font-weight: 700; }
.banner.win { background: var(--good-bg); color: var(--good); border-color: transparent; }
.banner.lose { background: var(--bad-bg); color: var(--warn); border-color: transparent; }
.banner.lock { background: var(--me-bg); color: var(--accent); border-color: transparent; }