:root {
  --bg: #f7f7f9;
  --card: #ffffff;
  --text: #1c1c22;
  --muted: #6a6a78;
  --accent: #d9480f;
  --accent-soft: #ffd8c2;
  --border: #e2e2ea;
  --correct: #2b8a3e;
  --correct-bg: #d3f9d8;
  --wrong: #c92a2a;
  --wrong-bg: #ffe3e3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121216;
    --card: #1c1c22;
    --text: #ececf2;
    --muted: #9a9aa8;
    --accent: #ff8a4c;
    --accent-soft: #4a2a18;
    --border: #2c2c36;
    --correct: #51cf66;
    --correct-bg: #1b3a24;
    --wrong: #ff6b6b;
    --wrong-bg: #4a1f24;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header, main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 1rem;
}

h1 { margin: 1rem 0 0; font-size: 1.8rem; }
h2 { margin: 2rem 0 0.75rem; font-size: 1.2rem; }

.muted { color: var(--muted); margin: 0.25rem 0; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
}

.card .label { color: var(--muted); font-size: 0.85rem; }
.card .value { font-size: 1.6rem; font-weight: 600; }
.card .sub { color: var(--muted); font-size: 0.8rem; }

.progress {
  height: 12px;
  background: var(--border);
  border-radius: 6px;
  overflow: hidden;
}

#progress-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
}

#histogram svg { width: 100%; height: auto; display: block; }
#histogram .bar { fill: var(--accent); }
#histogram .bar:hover { fill: var(--text); }
#histogram text { fill: var(--muted); font-size: 11px; }
#histogram line { stroke: var(--border); }

.top-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.75rem; }

.top-item {
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
}

.top-head {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.75rem;
}

.place {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
}

.top-item .score { font-weight: 600; }

.top-head > div { min-width: 0; }

.bracket-scroll { overflow-x: auto; margin-top: 0.5rem; }

svg.bracket { display: block; width: 100%; min-width: 1100px; height: auto; }
.bracket text { font-size: 13px; fill: var(--text); }
.bracket text.region { font-size: 12px; fill: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.bracket .line { fill: none; stroke: var(--muted); stroke-opacity: 0.55; stroke-width: 1.5; }

.slot rect { fill: var(--card); stroke: var(--border); }
.slot.correct rect { fill: var(--correct-bg); stroke: var(--correct); }
.slot.wrong rect { fill: var(--wrong-bg); stroke: var(--wrong); }
.slot.busted rect { fill: var(--card); stroke: var(--wrong); stroke-dasharray: 3 2; }
.slot.wrong .pick { fill: var(--muted); text-decoration: line-through; }
.slot.busted .pick { fill: var(--muted); text-decoration: line-through; }
.slot .actual { font-weight: 600; fill: var(--correct); font-size: 12px; }

.legend { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 0.9rem; margin-top: 0.5rem; font-size: 0.85rem; }
.legend .chip { display: inline-block; width: 14px; height: 14px; margin-right: -0.5rem; border-radius: 3px; border: 1px solid var(--border); background: var(--card); }
.legend .chip.correct { background: var(--correct-bg); border-color: var(--correct); }
.legend .chip.wrong { background: var(--wrong-bg); border-color: var(--wrong); }
.legend .chip.busted { border-color: var(--wrong); border-style: dashed; }

details { margin-top: 0.5rem; }
summary { cursor: pointer; color: var(--muted); }

code {
  display: block;
  margin-top: 0.4rem;
  padding: 0.5rem;
  background: var(--bg);
  border-radius: 6px;
  word-break: break-word;
  font-size: 0.8rem;
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--border); }
th.num, td.num { text-align: right; }