:root {
  --bg: var(--tg-theme-bg-color, #f4f5f7);
  --card: var(--tg-theme-secondary-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #1c1c1e);
  --hint: var(--tg-theme-hint-color, #8e8e93);
  --button: var(--tg-theme-button-color, #2481cc);
  --button-text: var(--tg-theme-button-text-color, #ffffff);
  --success: #2e9e5b;
}

* { box-sizing: border-box; }

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

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.card {
  width: 100%;
  max-width: 420px;
  padding: 24px 20px;
  border-radius: 16px;
  background: var(--card);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.env-label {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--hint);
  color: var(--hint);
  font-size: 12px;
}

h1 {
  margin: 20px 0 8px;
  font-size: 28px;
}

h1.success { color: var(--success); }

.status {
  margin: 0 0 4px;
  color: var(--hint);
}

.timestamp {
  margin: 0;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

button {
  width: 100%;
  margin-top: 24px;
  padding: 14px;
  border: 0;
  border-radius: 12px;
  background: var(--button);
  color: var(--button-text);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}

button:active { opacity: 0.85; }

@media (min-width: 600px) {
  .card { padding: 32px; }
}