:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #000000);
  --muted: var(--tg-theme-hint-color, #707579);
  --link: var(--tg-theme-link-color, #2481cc);
  --button: var(--tg-theme-button-color, #2481cc);
  --button-text: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg: var(--tg-theme-secondary-bg-color, #f4f4f5);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.45;
}

header {
  padding: 16px 16px 8px;
  border-bottom: 1px solid var(--secondary-bg);
}
header h1 { margin: 0; font-size: 20px; }

main { padding: 12px 16px 32px; }
section { margin: 16px 0; }

.muted { color: var(--muted); }
.error {
  background: #ffefef; color: #b00020;
  padding: 12px; border-radius: 8px;
  font-size: 13px;
}

.totals { font-size: 13px; margin-top: 6px; }
.totals .big { font-weight: 700; color: var(--text); font-size: 16px; }

.grid { display: grid; gap: 12px; }
@media (min-width: 600px) { .grid { grid-template-columns: 1fr 1fr; } }

.card {
  background: var(--secondary-bg);
  border-radius: 12px;
  padding: 12px 14px;
}
.card h3 { margin: 0 0 4px; font-size: 16px; }
.card .topic { margin: 8px 0 0; font-size: 12px; line-height: 1.3; }

.metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin-top: 8px;
}
.metrics div {
  text-align: center;
  background: var(--bg);
  border-radius: 8px;
  padding: 6px 2px;
}
.metrics b { display: block; font-size: 14px; }
.metrics span { font-size: 10px; color: var(--muted); }

.list {
  list-style: none;
  padding: 0; margin: 8px 0;
}
.list li {
  padding: 8px 12px;
  background: var(--secondary-bg);
  border-radius: 8px;
  margin-bottom: 6px;
  font-size: 14px;
  word-wrap: break-word;
}

.centered {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-height: 70vh;
  text-align: center; padding: 24px;
}