:root {
  --ink: #1c1c24;
  --gold: #ffd166;
  --paper: #fffaf0;
  --board: #2f4f3a;
  --font: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.5 var(--font);
}

.hero {
  background: var(--board);
  color: #fff;
  padding: 64px 24px 72px;
  text-align: center;
  border-bottom: 10px solid #8b5a2b;
}

.hero h1 {
  margin: 0;
  font-size: clamp(40px, 8vw, 76px);
  font-weight: 900;
  letter-spacing: 0.5px;
}

.hero p {
  margin: 12px auto 0;
  max-width: 640px;
  font-size: 20px;
  opacity: 0.9;
}

.actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.btn {
  display: inline-block;
  padding: 16px 32px;
  border: 4px solid var(--ink);
  border-radius: 18px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 900;
  font-size: 24px;
  text-decoration: none;
  box-shadow: 0 6px 0 var(--ink);
}

.btn.secondary { background: #fff; }

.btn:active { transform: translateY(4px); box-shadow: 0 2px 0 var(--ink); }

main.content {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px;
}

main.content h2 { font-size: 28px; margin: 0 0 8px; }

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px;
  font-size: 14px;
  color: #555;
  border-top: 1px solid #ddd;
}

/* stats page */
body.stats { background: #0f121e; color: #fff; }

.stats-wrap { max-width: 1100px; margin: 0 auto; padding: 32px 24px; text-align: center; }

.stats-wrap h1 { font-size: clamp(32px, 5vw, 56px); margin: 0 0 8px; color: var(--gold); }

.big {
  font-size: clamp(72px, 14vw, 180px);
  font-weight: 900;
  line-height: 1;
  margin: 16px 0 4px;
  font-variant-numeric: tabular-nums;
}

.sub { font-size: 22px; opacity: 0.85; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; margin-top: 40px; }

.card { background: #1b2033; border: 3px solid #2c3554; border-radius: 20px; padding: 24px; text-align: left; }

.card h2 { margin: 0 0 16px; font-size: 24px; color: var(--gold); }

.bar-row { margin: 12px 0; }

.bar-label { display: flex; justify-content: space-between; font-weight: 800; font-size: 20px; }

.bar { height: 22px; background: #2c3554; border-radius: 11px; overflow: hidden; margin-top: 6px; }

.bar > span { display: block; height: 100%; background: var(--gold); width: 0; transition: width 0.6s; }

.note { margin-top: 32px; font-size: 16px; opacity: 0.7; }

.streak {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  border-radius: 16px;
  background: #fff8e1;
  color: var(--ink);
  font-size: 22px;
  font-weight: 800;
}

.streak[hidden] { display: none; }