:root {
  --bg: #f4f1ea;
  --surface: #ffffff;
  --surface-2: #f7f5f0;
  --text: #22201c;
  --muted: #6d675d;
  --border: #e2ddd2;
  --accent: #2f7d4f;
  --accent-hover: #276a43;
  --accent-text: #ffffff;
  --danger: #b33a3a;
  --warn-bg: #fff4d6;
  --warn-text: #6b4e00;
  --info-bg: #e5f1ea;
  --clock-bg: #ece8df;
  --clock-active: #2f7d4f;
  --clock-low: #b33a3a;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 4px 16px rgb(0 0 0 / 5%);
  --radius: 12px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1a18;
    --surface: #262421;
    --surface-2: #2e2c28;
    --text: #ece8e1;
    --muted: #a39d92;
    --border: #3b3833;
    --accent: #5fb27f;
    --accent-hover: #74c391;
    --accent-text: #10170f;
    --danger: #e07070;
    --warn-bg: #3d3216;
    --warn-text: #f3d98a;
    --info-bg: #213528;
    --clock-bg: #33302b;
    --clock-active: #5fb27f;
    --clock-low: #e07070;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 4px 16px rgb(0 0 0 / 25%);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}

a { color: var(--accent); }

.hidden { display: none !important; }

/* ---------------------------------------------------------------- header */

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-icon { font-size: 1.5rem; }

.topbar nav { margin-left: auto; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.topbar nav a { text-decoration: none; font-weight: 500; }
.who { color: var(--muted); }

/* ---------------------------------------------------------------- layout */

main { max-width: 1100px; margin: 0 auto; padding: 20px 16px 48px; }

.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); align-items: start; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
}

.card h2 { margin: 0 0 12px; font-size: 1.1rem; }
.card h2 .count { color: var(--muted); font-weight: 400; }

.span-all { grid-column: 1 / -1; }

.empty { color: var(--muted); margin: 4px 0; }

.banner {
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.banner.info { background: var(--info-bg); }
.banner.warn { background: var(--warn-bg); color: var(--warn-text); }
.banner .grow { flex: 1; min-width: 180px; }

/* ---------------------------------------------------------------- lists */

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}
.list li:last-child { border-bottom: none; }
.list .name { flex: 1; font-weight: 500; overflow-wrap: anywhere; }
.list .sub { color: var(--muted); font-size: .9rem; font-weight: 400; }

.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); flex: none; }
.dot.busy { background: #d49a1f; }

.badge {
  font-size: .78rem;
  padding: 2px 8px;
  border-radius: 99px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}
.badge.win { background: var(--info-bg); color: var(--accent); border-color: transparent; }
.badge.loss { color: var(--danger); }

table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 500; font-size: .85rem; }
.table-wrap { overflow-x: auto; }

/* ---------------------------------------------------------------- forms */

button, .button {
  font: inherit;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
}
button:hover:not(:disabled), .button:hover { border-color: var(--muted); }
button:disabled { opacity: .5; cursor: default; }
button.primary, .button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.primary:hover:not(:disabled), .button.primary:hover { background: var(--accent-hover); }
button.danger { color: var(--danger); }
button.small { padding: 4px 10px; font-size: .88rem; }
button.link { background: none; border: none; color: var(--accent); padding: 0; }

label { display: block; font-weight: 500; margin: 12px 0 4px; }
label.inline { display: flex; align-items: center; gap: 8px; font-weight: 400; }

input[type=text], input[type=password], select {
  font: inherit;
  width: 100%;
  padding: 9px 11px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
input:focus-visible, select:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row > input { flex: 1; width: auto; min-width: 0; }
.actions { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.form-error { color: var(--danger); min-height: 1.3em; margin: 8px 0 0; }

.segmented { display: flex; flex-wrap: wrap; gap: 6px; }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label {
  margin: 0;
  font-weight: 500;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  background: var(--surface-2);
}
.segmented input:checked + label { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.segmented input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 1px; }

dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 22px 24px;
  width: min(440px, calc(100vw - 32px));
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgb(0 0 0 / 45%); }
dialog h2 { margin: 0 0 6px; font-size: 1.2rem; }

/* ---------------------------------------------------------------- login */

.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(380px, 100%); }
.login-card h1 { margin: 0 0 4px; font-size: 1.5rem; display: flex; gap: 10px; align-items: center; }
.login-card p { color: var(--muted); margin: 0 0 8px; }
.login-card button { width: 100%; margin-top: 18px; padding: 10px; }

/* ---------------------------------------------------------------- game */

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 20px;
  align-items: start;
}

.board-col { display: flex; flex-direction: column; gap: 8px; width: 100%; max-width: min(640px, calc(100vh - 200px)); min-width: 260px; margin: 0 auto; }

.player-bar { display: flex; align-items: center; gap: 10px; }
.player-bar .name { font-weight: 600; flex: 1; overflow-wrap: anywhere; }
.player-bar .piece-icon { width: 16px; height: 16px; border-radius: 4px; border: 2px solid var(--muted); flex: none; }
.player-bar .piece-icon.white { background: #fff; }
.player-bar .piece-icon.black { background: #111; }

.clock {
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  font-weight: 600;
  padding: 2px 12px;
  border-radius: 8px;
  background: var(--clock-bg);
  min-width: 96px;
  text-align: center;
}
.clock.active { background: var(--clock-active); color: var(--accent-text); }
.clock.low { background: var(--clock-low); color: #fff; }

.board { width: 100%; aspect-ratio: 1 / 1; position: relative; }
.board > .cg-wrap { width: 100%; height: 100%; }

.side { display: flex; flex-direction: column; gap: 14px; }
.status { font-weight: 600; font-size: 1.05rem; }
.status .reason { display: block; font-weight: 400; color: var(--muted); font-size: .95rem; }

.moves {
  max-height: 260px;
  overflow-y: auto;
  display: grid;
  grid-template-columns: 2.6em 1fr 1fr;
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
}
.moves .num { color: var(--muted); padding: 3px 6px; text-align: right; }
.moves .mv { padding: 3px 8px; cursor: default; border-radius: 4px; }
.moves.navigable .mv { cursor: pointer; }
.moves.navigable .mv:hover { background: var(--border); }
.moves .mv.current { background: var(--accent); color: var(--accent-text); }
.moves .none { grid-column: 1 / -1; color: var(--muted); padding: 8px; }

.nav-buttons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }

.quick { display: flex; flex-wrap: wrap; gap: 6px; }

.chat { list-style: none; margin: 0; padding: 0; max-height: 150px; overflow-y: auto; font-size: .95rem; }
.chat li { padding: 3px 0; }
.chat .from { font-weight: 600; }

.promo-choices { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
.promo-choices button { font-size: 2.4rem; padding: 6px 0; line-height: 1.1; }

.toast-host { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 8px; z-index: 1000; width: min(420px, calc(100vw - 32px)); }
.toast { background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); text-align: center; }
.toast.error { background: var(--danger); color: #fff; }

@media (max-width: 800px) {
  .game-layout { grid-template-columns: 1fr; }
  .board-col { max-width: 100%; }
  .topbar { padding: 10px 16px; flex-wrap: wrap; }
  main { padding: 14px 16px 40px; }
  .clock { font-size: 1.3rem; min-width: 84px; }
}

/* chessground: slightly softer board colours and coordinates that fit our fonts */
cg-board { border-radius: 4px; }
.cg-wrap coords { font-family: system-ui, sans-serif; }