/* Một cột trên điện thoại cho người chấm; trang quản trị và màn chiếu dùng lưới rộng hơn. */
:root {
  --bg: #f3f4f8;
  --surface: #ffffff;
  --ink: #171a2b;
  --muted: #646a82;
  --line: #dcdfe9;
  --accent: #2b3fd6;
  --accent-ink: #ffffff;
  --accent-soft: #e6e9fc;
  --gold: #c98a00;
  --good: #14804a;
  --bad: #c0362c;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1120;
    --surface: #191c30;
    --ink: #eef0fa;
    --muted: #9ba1bd;
    --line: #2c3050;
    --accent: #7f8fff;
    --accent-ink: #0b0d1c;
    --accent-soft: #232a56;
    --gold: #f2b93b;
    --good: #4cc98a;
    --bad: #ff7b6e;
    color-scheme: dark;
  }
}
:root.stage {
  --bg: #0b0d1c;
  --surface: #161a30;
  --ink: #f3f4fc;
  --muted: #9ba1bd;
  --line: #2a2f50;
  --accent: #8c9aff;
  --accent-ink: #0b0d1c;
  --accent-soft: #212754;
  --gold: #f2b93b;
  --good: #4cc98a;
  --bad: #ff7b6e;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 var(--font);
}
h1, h2, h3 { margin: 0; line-height: 1.2; text-wrap: balance; }
p { margin: 0; }
[hidden] { display: none !important; }

.wrap { max-width: 520px; margin: 0 auto; padding: 20px 16px 48px; display: flex; flex-direction: column; gap: 16px; }
.wrap.wide { max-width: 1040px; }

.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.num { font-variant-numeric: tabular-nums; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row > .grow { flex: 1; min-width: 0; }
.stack { display: flex; flex-direction: column; gap: 10px; }

button, .btn {
  font: inherit; font-weight: 600; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  border-radius: 10px; padding: 10px 16px; min-height: 44px; text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.danger { color: var(--bad); }
button.link { border: 0; background: none; color: var(--accent); padding: 4px 0; min-height: 0; font-weight: 500; }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible, input:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
button.block { width: 100%; }

input[type="text"], input[type="number"], input[type="password"] {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; min-height: 44px; width: 100%; min-width: 0;
}
label { font-size: 14px; font-weight: 600; display: flex; flex-direction: column; gap: 6px; }

.pill { align-self: flex-start; display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.pill.live { background: color-mix(in srgb, var(--good) 18%, transparent); color: var(--good); }
.pill.live::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.pill.off { background: var(--bg); color: var(--muted); }

.msg { font-size: 14px; font-weight: 500; min-height: 1.5em; }
.msg.err { color: var(--bad); }
.msg.ok { color: var(--good); }

/* Thang điểm 1–10 */
.scale { display: grid; grid-template-columns: repeat(10, 1fr); gap: 4px; }
.scale button { padding: 0; min-height: 44px; border-radius: 8px; font-variant-numeric: tabular-nums; }
.scale button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.crit-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.crit-head b { font-size: 17px; }

/* Bảng xếp hạng */
.board { display: flex; flex-direction: column; gap: 8px; }
.board-row { display: grid; grid-template-columns: 2.2em 1fr auto; gap: 4px 12px; align-items: center; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.board-row .rank { font-size: 1.4em; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.board-row.first .rank, .board-row.first .final { color: var(--gold); }
.board-row .name { font-weight: 700; min-width: 0; overflow-wrap: anywhere; }
.board-row .final { font-size: 1.5em; font-weight: 700; font-variant-numeric: tabular-nums; }
.board-row .detail { grid-column: 2 / -1; font-size: .8em; color: var(--muted); font-variant-numeric: tabular-nums; }
.bar { grid-column: 2 / -1; height: 6px; border-radius: 3px; background: var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); border-radius: 3px; transition: width .6s ease; }
.board-row.first .bar i { background: var(--gold); }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
td.r, th.r { text-align: right; }
.scroll-x { overflow-x: auto; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

.final small { font-size: .5em; font-weight: 500; }

/* Chọn Ban tổ chức / Khán giả */
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.seg button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.seg button:disabled[aria-pressed="true"] { opacity: 1; }
.total { display: flex; justify-content: space-between; align-items: baseline; padding-top: 12px; border-top: 1px solid var(--line); font-weight: 700; }
.total .num { font-size: 1.6em; }

/* Dãy số tiết mục trên phiếu chấm */
.strip { display: flex; flex-wrap: wrap; gap: 6px; }
.strip span { min-width: 40px; padding: 6px 10px; text-align: center; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--muted); font-weight: 700; font-variant-numeric: tabular-nums; }
.strip span.done { color: var(--good); }
.strip span.live { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.success { padding: 14px 16px; border-radius: 10px; font-size: 18px; font-weight: 700; color: var(--good); background: color-mix(in srgb, var(--good) 14%, transparent); }