:root {
  --bg: #f6f7f9; --panel: #ffffff; --line: #dfe3e8; --text: #1b1f24; --muted: #66707b;
  --accent: #e8590c; --accent-soft: #fff1e8; --good: #2b8a3e; --bad: #c92a2a; --info: #1c7ed6;
  --court: #f3e3c3; --court-line: #8a6d3b;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171a; --panel: #1d2125; --line: #30363d; --text: #e6e8eb; --muted: #9aa3ad;
    --accent: #ff8a3d; --accent-soft: #3a2616; --good: #51cf66; --bad: #ff6b6b; --info: #4dabf7;
    --court: #3b3226; --court-line: #c9a86a; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header.top { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--panel);
  border-bottom: 1px solid var(--line); }
header.top a.brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 17px; }
header.top a.brand span { color: var(--accent); margin-right: 2px; }
header.top nav { margin-left: auto; display: flex; gap: 14px; }
header.top nav a { color: var(--muted); text-decoration: none; }
header.top nav a:hover { color: var(--text); }
main { max-width: 880px; margin: 0 auto; padding: 20px 16px 48px; }
main.wide { max-width: 1400px; }
h1 { font-size: 22px; margin: 4px 0 4px; }
h2 { font-size: 17px; margin: 0 0 10px; }
p.sub { color: var(--muted); margin: 0 0 18px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 14px; }
.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mode { border: 2px solid var(--line); border-radius: 10px; padding: 14px; cursor: pointer; background: var(--panel); }
.mode:hover { border-color: var(--muted); }
.mode.on { border-color: var(--accent); background: var(--accent-soft); }
.mode b { display: block; font-size: 16px; margin-bottom: 4px; }
.mode small { color: var(--muted); }
label.field { display: block; margin: 0 0 12px; }
label.field > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
input[type=text], input[type=password], input[type=email], .blk input, select { width: 100%; padding: 9px 10px; border: 1px solid var(--line);
  border-radius: 7px; background: var(--bg); color: var(--text); font: inherit; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 200px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; background: var(--panel); color: var(--text); padding: 7px 12px; }
.seg button.on { background: var(--accent); color: #fff; }
button, .btn { display: inline-block; border: 1px solid var(--line); background: var(--panel); color: var(--text);
  border-radius: 8px; padding: 9px 14px; font: inherit; cursor: pointer; text-decoration: none; }
button:hover, .btn:hover { border-color: var(--muted); }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button:disabled { opacity: .5; cursor: default; }
.bar { height: 10px; background: var(--line); border-radius: 5px; overflow: hidden; margin: 8px 0; }
.bar > div { height: 100%; background: var(--accent); width: 0; transition: width .3s; }
.muted { color: var(--muted); }
.err { color: var(--bad); white-space: pre-wrap; }
.ok { color: var(--good); }
.hidden { display: none !important; }
canvas.court { width: 100%; max-width: 420px; display: block; margin: 0 auto; cursor: pointer; border-radius: 8px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin: 6px 0 14px; }
.stat { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px; }
.stat b { display: block; font-size: 24px; }
.stat span { color: var(--muted); font-size: 13px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.boards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.legend { display: flex; gap: 14px; justify-content: center; font-size: 13px; color: var(--muted); margin-top: 6px; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 4px; vertical-align: -1px; }

/* the court widget */
.setup { display: grid; grid-template-columns: 1fr 320px; gap: 14px; }
@media (max-width: 900px) { .setup { grid-template-columns: 1fr; } }
.stage { position: relative; background: #000; border-radius: 10px; overflow: hidden; height: 72vh; touch-action: none; }
.stage canvas { width: 100%; height: 100%; display: block; cursor: crosshair; }
.stage .hint { position: absolute; left: 10px; top: 10px; background: rgba(0,0,0,.65); color: #fff; padding: 6px 10px;
  border-radius: 6px; font-size: 13px; pointer-events: none; }
.steps { list-style: none; padding: 0; margin: 0 0 12px; }
.steps li { display: flex; align-items: center; gap: 8px; padding: 7px 8px; border-radius: 7px; cursor: pointer; font-size: 14px; }
.steps li:hover { background: var(--bg); }
.steps li.cur { background: var(--accent-soft); outline: 1px solid var(--accent); }
.steps li .n { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 12px;
  background: var(--line); flex: none; }
.steps li.done .n { background: var(--good); color: #fff; }
.steps li small { color: var(--muted); margin-left: auto; }

.tools { display: flex; gap: 6px; margin-top: 8px; align-items: center; }
.tools button { padding: 7px 11px; }
.side canvas.mini { max-width: 240px; cursor: default; }
.side .actions { display: grid; gap: 8px; margin-top: 10px; }
.fitinfo { font-size: 13px; margin-top: 6px; }
.stage canvas { touch-action: none; }

/* upload flow */
.blocks .blk { display: grid; grid-template-columns: minmax(0, 1fr) 90px 90px 36px; gap: 8px; align-items: center; margin-bottom: 8px; }
.blocks .blk button { padding: 6px 0; }
.blocks .head { font-size: 12px; color: var(--muted); }
details.opt > summary { cursor: pointer; color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.notice { background: var(--accent-soft); border: 1px solid var(--accent); border-radius: 8px; padding: 10px 12px; margin: 10px 0; }
.big { font-size: 18px; font-weight: 600; }
.steprow { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
.steprow .ic { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; background: var(--line); flex: none; }
.steprow.ok .ic { background: var(--good); color: #fff; }
.steprow.now .ic { background: var(--accent); color: #fff; }

/* results */
.tabbar { display: flex; gap: 6px; flex-wrap: wrap; margin: 4px 0 12px; }
.tabbar button { border-radius: 999px; padding: 6px 14px; }
.tabbar button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.tabbar button small { opacity: .8; margin-left: 4px; }
.timeline { width: 100%; height: 64px; display: block; }
.grid2 { display: grid; grid-template-columns: minmax(0, 420px) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 760px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }
.arc { font-size: 14px; }
.arc .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }
.caveat { font-size: 12px; color: var(--muted); margin: 8px 0 0; }

.chcards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; margin-bottom: 10px; }
.chcard { border: 2px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; background: var(--panel); font-size: 14px; }
.chcard:hover { border-color: var(--muted); }
.chcard.on { border-color: var(--accent); background: var(--accent-soft); }
p.explain { background: var(--bg); border-left: 3px solid var(--accent); padding: 8px 12px; margin: 0 0 12px; font-size: 14px; }
p.explain:empty { display: none; }

/* the leaderboard: court next to a podium table (upload page and leaderboard page) */
.lb { display: grid; grid-template-columns: minmax(0, 260px) minmax(0, 1fr); gap: 18px; align-items: start; }
@media (max-width: 720px) { .lb { grid-template-columns: minmax(0, 1fr); } }
.filters .seg { margin: 0 6px 8px 0; flex-wrap: wrap; }
.filters .seg button { padding: 6px 11px; font-size: 14px; }
.podium { width: 100%; border-collapse: collapse; }
.podium th, .podium td { padding: 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.podium td.board { color: var(--muted); font-size: 14px; white-space: nowrap; }
.podium td.you { text-align: center; font-weight: 600; color: var(--accent); }
.podium .who { display: block; font-weight: 600; }
.podium .val { display: block; font-size: 12px; color: var(--muted); }
.podium .med { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; font-size: 11px;
  font-weight: 600; margin-right: 6px; vertical-align: -4px; border: 1.5px solid rgba(0,0,0,.4); color: #2b2118; }
.podium .g { background: #e8b923; } .podium .s { background: #c9ccd1; } .podium .b { background: #c7814a; }
.podium .cell { display: flex; align-items: flex-start; }
.podium .me .who { color: var(--accent); }
.podium .empty { color: var(--muted); }
.lb canvas.court { max-width: none; }
.lbhint { color: var(--muted); font-size: 14px; margin: 0; }

.modebar { position: sticky; top: 0; z-index: 20; background: var(--bg); padding: 8px 0; margin-bottom: 6px; border-bottom: 1px solid var(--line); }
.modebar .seg button { padding: 7px 14px; }
.seg button.on { background: var(--accent); color: #fff; }

label.check { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.namebtns { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 2px; }
.progchart { width: 100%; height: 110px; display: block; margin: 4px 0 8px; }
td.num a { white-space: nowrap; }

tr.near td { font-size: 13px; color: var(--muted); padding-top: 0; }
tr.near b { color: var(--text); font-weight: 600; }
tr:has(+ tr.near) td { border-bottom: 0; padding-bottom: 2px; }