:root {
  --bg: #0f1115;
  --card-bg: #ffffff;
  --accent: #635bff; /* Stripe purple */
  --text-dark: #1a1a1a;
  --text-muted: #6b7280;
  --danger: #d92d20;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  background: var(--card-bg);
  border-radius: 16px;
  max-width: 440px;
  width: 100%;
  padding: 40px 32px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
h1 {
  font-size: 22px;
  margin: 0 0 8px;
  color: var(--text-dark);
}
p.sub {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 28px;
}
.timer {
  font-variant-numeric: tabular-nums;
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-dark);
  margin-bottom: 28px;
}
.timer.expired { color: var(--danger); }
.buy-btn {
  display: block;
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: opacity 0.15s ease;
}
.buy-btn:hover { opacity: 0.9; }
.buy-btn:disabled,
.buy-btn.disabled {
  background: #d1d5db;
  color: #6b7280;
  cursor: not-allowed;
  pointer-events: none;
}
.status-msg {
  display: none;
  margin-top: 16px;
  font-size: 14px;
}
.status-msg.show { display: block; }
.status-msg.error { color: var(--danger); }
.status-msg.muted { color: var(--text-muted); }
.landing-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.landing-links a {
  display: block;
  padding: 16px;
  border-radius: 10px;
  background: #f3f4f6;
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 600;
}
.landing-links a:hover { background: #e5e7eb; }