:root {
  --bg: #1a1008;
  --panel: #2b1c0e;
  --line: #5a3d1c;
  --text: #fff6e2;
  --muted: #c9ae86;
  --gold: #ffc71f;
  --bad: #ff5d5d;
  --good: #7dff9a;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: radial-gradient(circle at 50% 0%, #3a2410, var(--bg) 70%) fixed;
  color: var(--text);
  font: 15px/1.4 "Be Vietnam Pro", "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
[hidden] { display: none !important; }
.ic { width: 1.15em; height: 1.15em; vertical-align: -0.2em; }
button, .btn {
  font: inherit; color: inherit; background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 6px 10px; cursor: pointer; white-space: nowrap; text-decoration: none;
  display: inline-flex; align-items: center; gap: 4px;
}
button:disabled { opacity: .4; cursor: default; }
button.primary { background: var(--gold); color: #2b1600; border-color: var(--gold); font-weight: 700; justify-content: center; }

#hud {
  display: flex; align-items: center; gap: 8px; padding: 8px 12px;
  padding-top: max(8px, env(safe-area-inset-top)); overflow-x: auto;
}
.stat { font-size: 13px; color: var(--muted); white-space: nowrap; }
.stat b { color: var(--text); font-size: 16px; font-variant-numeric: tabular-nums; }
#hMoney.ok { color: var(--good); }
#hTime.low { color: var(--bad); }
#btnDyn { margin-left: auto; }
.stat small { font-size: 13px; }
.stat .short { display: none; }
@media (max-width: 520px) {
  #hud { gap: 6px; padding-inline: 8px; }
  #hud button, #hud .btn { padding: 5px 7px; }
  .stat small { display: none; }
  .stat .short { display: inline; }
  .stat b { font-size: 14px; }
}
/* ≤ 440px: chừa chỗ cho nút Cách chơi (i) trên HUD. */
@media (max-width: 440px) {
  #hud { gap: 4px; padding-inline: 6px; }
  #hud button { padding: 5px 5px; }
  .stat b { font-size: 13px; }
}
/* ≤ 390px, chơi nhiều người có thêm nút ẩn/hiện người chơi khác: khít thêm. */
@media (max-width: 390px) {
  #hud { gap: 2px; }
  #hud button { padding: 5px 4px; }
}

#stage { position: relative; flex: 1; min-height: 0; display: grid; place-items: center; padding: 0 8px 8px; }
#game { border-radius: 10px; box-shadow: 0 10px 40px #000a; touch-action: none; cursor: pointer; }

#overlay { position: absolute; inset: 0; display: grid; grid-template-columns: minmax(0, 1fr); place-items: center; background: #1a1008c0; padding: 16px; overflow-y: auto; }
#loading {
  position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 12px;
  padding: 16px; text-align: center; color: var(--muted);
}
#loading p { margin: 0; }
#loading .bar { width: min(240px, 70vw); height: 12px; border-radius: 999px; background: var(--panel); border: 1px solid var(--line); overflow: hidden; }
#loading .bar i { display: block; width: 0; height: 100%; background: var(--gold); border-radius: inherit; transition: width .15s; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 20px;
  width: min(420px, 100%); display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; justify-items: center; text-align: center;
  box-shadow: 0 12px 40px #000a;
}
.card h2, .card p { margin: 0; }
.card .primary { width: 100%; }
.muted { color: var(--muted); font-size: 13px; }
.link { color: var(--muted); font-size: 13px; }

.row { display: flex; gap: 8px; width: 100%; justify-content: center; flex-wrap: wrap; }
.field { display: grid; gap: 4px; width: 100%; text-align: left; color: var(--muted); font-size: 13px; }
input {
  font: inherit; color: inherit; background: #1a1008; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; width: 100%;
}
input.code { flex: 1; min-width: 0; text-transform: uppercase; letter-spacing: 3px; text-align: center; }
.card > button:not(.primary) { width: 100%; justify-content: center; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; width: 100%; }
.seg button { justify-content: center; }
.seg button.on { border-color: var(--gold); color: var(--gold); }
.seg button:disabled { opacity: 1; }
.plist { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.plist li { padding: 3px 10px; border: 1px solid var(--line); border-radius: 999px; font-size: 13px; }
.plist li.off { opacity: .45; }
.result { display: grid; gap: 6px; width: 100%; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.result ol { margin: 0; padding-left: 20px; text-align: left; }
#scores { list-style: none; margin: 0; padding: 0 12px 6px; display: flex; gap: 6px; flex-wrap: wrap; font-size: 13px; }
#scores li { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px; background: var(--panel); border: 1px solid var(--line); }
#scores li b { color: var(--c); }
#scores li.off { opacity: .45; }
/* Khung người chơi (panel.css) thay dải điểm; ẩn khung thì dải điểm gọn hiện lại. */
body:not(.panel-off):not(.panel-empty) #scores { display: none; }
.arena #stage { padding: 0 8px 8px; }
#scores .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--c); font-style: normal; }
.sprite { display: inline-block; max-width: 100%; background-image: var(--atlas, url("assets/atlas.webp")); background-repeat: no-repeat; flex: none; }

.shopkeeper { display: flex; align-items: center; gap: 10px; text-align: left; }
.shop-items { display: grid; gap: 8px; width: 100%; }
.shop-item {
  display: grid; grid-template-columns: 56px 1fr auto; grid-template-rows: auto auto;
  column-gap: 10px; align-items: center; text-align: left; width: 100%; padding: 8px 12px;
}
.shop-item .sprite { grid-row: span 2; justify-self: center; }
.shop-item small { color: var(--muted); grid-column: 2; }
.shop-item em { grid-row: 1 / span 2; grid-column: 3; font-style: normal; font-weight: 700; color: var(--gold); }