:root {
  --bg-a: #1a0f1a;
  --bg-b: #1e0f22;
  --bg-c: #12081c;
  --accent: #ff5da2;
  --accent-2: #8fd0ff;
  --good: #8ac926;
  --warn: #e94560;
  --gold: #ffd23f;
  --text: #eeeeee;
  --muted: #9aa4b2;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: linear-gradient(160deg, var(--bg-a) 0%, var(--bg-b) 55%, var(--bg-c) 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.topbar {
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar h1 { margin: 0; font-size: 17px; letter-spacing: 0.5px; color: var(--accent); }
.topbar .tagline { font-size: 12px; color: var(--muted); }
.topbar .spacer { flex: 1 1 auto; }

.topbar a {
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  border: 1px solid rgba(255, 93, 162, 0.35);
  border-radius: 6px;
  padding: 4px 10px;
  white-space: nowrap;
}

.topbar a:hover { background: rgba(255, 93, 162, 0.12); }

main.wrap {
  flex: 1 1 auto;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 20px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.big {
  font-size: 15vw;
  line-height: 1;
}

.code {
  font-size: clamp(28px, 6vw, 56px);
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent);
  margin: 10px 0;
}

.muted { color: var(--muted); }

.panel {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 20px;
  margin-top: 16px;
}

.qtext {
  font-size: clamp(18px, 3.4vw, 28px);
  font-weight: 600;
  margin: 6px 0 18px;
  line-height: 1.35;
}

.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
}

@media (max-width: 480px) {
  .choices { grid-template-columns: 1fr; }
}

.choice {
  padding: 18px 14px;
  border-radius: 10px;
  border: none;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  color: #0f0f1a;
  text-align: left;
  transition: transform 0.08s ease;
}

.choice:active { transform: scale(0.97); }
.choice:disabled { opacity: 0.55; cursor: default; }

.choice.a { background: #ff9f40; }
.choice.b { background: #4ecca3; }
.choice.c { background: #36a2eb; }
.choice.d { background: #c08bff; }

.choice.correctAnswer { outline: 3px solid var(--good); }
.choice.wrongAnswer { outline: 3px solid var(--warn); }

.timerTrack {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  margin: 6px 0 14px;
}

.timerBar {
  height: 100%;
  background: var(--accent);
  transition: width 0.2s linear;
}

.leaderboard {
  width: 100%;
  text-align: left;
  margin-top: 8px;
}

.leaderboard .row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
}

.leaderboard .row:nth-child(odd) { background: rgba(255, 255, 255, 0.03); }
.leaderboard .rank { width: 22px; color: var(--muted); font-variant-numeric: tabular-nums; }
.leaderboard .name { flex: 1 1 auto; text-align: left; }
.leaderboard .score { font-variant-numeric: tabular-nums; color: var(--accent); font-weight: 600; }
.leaderboard .row.me { outline: 1px solid rgba(255, 93, 162, 0.4); }

.field {
  width: 100%;
  margin: 14px 0;
  text-align: left;
}

.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }

.field input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 16px;
  font-family: inherit;
}

.field input:focus { outline: none; border-color: var(--accent); }

button.primary {
  padding: 12px 24px;
  border-radius: 8px;
  border: 1px solid rgba(255, 93, 162, 0.5);
  background: rgba(255, 93, 162, 0.16);
  color: var(--accent);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}

button.primary:hover { background: rgba(255, 93, 162, 0.28); }
button.primary:disabled { opacity: 0.5; cursor: default; }

.status { font-size: 13px; color: var(--muted); min-height: 18px; margin-top: 10px; }
.status.good { color: var(--good); }
.status.bad { color: var(--warn); }

.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
  margin-bottom: 8px;
}

/* --- Leaderboard page ------------------------------------------------ */

.card {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 6px 14px 12px;
  margin-bottom: 18px;
  text-align: left;
}

.card h2 {
  font-size: 14px;
  margin: 12px 0 4px;
  color: var(--accent-2);
  font-weight: 600;
}

table.board {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

table.board th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
  font-weight: 600;
  padding: 10px 8px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  white-space: nowrap;
}

table.board td {
  padding: 9px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

table.board tr:last-child td { border-bottom: none; }

.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.rank { width: 70px; color: var(--muted); font-variant-numeric: tabular-nums; }
tr.top1 .rank, tr.top1 td.score { color: var(--gold); font-weight: 600; }
tr.top2 .rank { color: #cfd8e3; }
tr.top3 .rank { color: #d09a63; }
td.score { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
td.when { color: var(--muted); font-size: 12px; white-space: nowrap; text-align: right; }

.empty { padding: 18px 8px; color: var(--muted); font-size: 13px; }

@media (max-width: 480px) {
  table.board { font-size: 13px; }
  td.when, th.when { display: none; }
}