:root {
  color-scheme: dark;
  --bg: #101315;
  --panel: #181d20;
  --panel-2: #20272b;
  --text: #eef4f0;
  --muted: #9aa9a3;
  --line: #2d373b;
  --accent: #6ee7b7;
  --accent-2: #7dd3fc;
  --danger: #fb7185;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, rgba(125, 211, 252, 0.16), transparent 30%), var(--bg);
  color: var(--text);
}
button, input, select {
  font: inherit;
}
button {
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #06251a;
  font-weight: 800;
  padding: 11px 14px;
  cursor: pointer;
}
button.secondary {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
}
button:disabled { opacity: 0.45; cursor: not-allowed; }
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0d1113;
  color: var(--text);
  padding: 11px 12px;
}
.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 18px 48px;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}
.brand { display: flex; flex-direction: column; gap: 4px; }
.brand h1 { margin: 0; font-size: 34px; letter-spacing: 0; }
.brand span, .muted { color: var(--muted); }
.grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
}
.panel {
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}
.panel h2 { margin: 0 0 12px; font-size: 19px; }
.stack { display: grid; gap: 12px; }
.row { display: flex; gap: 10px; align-items: center; }
.row > * { flex: 1; }
.code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 118px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0d1113;
  color: var(--accent-2);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 2px;
}
.status {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--muted);
  width: fit-content;
}
.question {
  font-size: 28px;
  line-height: 1.14;
  margin: 6px 0 18px;
}
.options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.option {
  text-align: left;
  min-height: 64px;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
}
.option.selected {
  background: color-mix(in srgb, var(--accent) 25%, var(--panel-2));
  border-color: var(--accent);
}
.players, .scores { display: grid; gap: 9px; }
.player, .score {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  background: #0d1113;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
}
.tag { color: var(--accent); font-weight: 800; }
.error { color: var(--danger); min-height: 22px; }
.hidden { display: none; }
@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
  .topbar, .row { align-items: stretch; flex-direction: column; }
  .options { grid-template-columns: 1fr; }
  .brand h1 { font-size: 28px; }
}