:root {
  --bg: #050711;
  --bg-card: rgba(9, 14, 30, 0.94);
  --accent: #3fd1ff;
  --accent-soft: rgba(63, 209, 255, 0.3);
  --accent-strong: #5cf0ff;
  --text-main: #f5f7ff;
  --text-muted: #a4adc4;
  --radius-lg: 18px;
  --shadow-strong: 0 24px 60px rgba(0, 0, 0, 0.7);
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", Roboto, sans-serif;
}

body {
  font-family: var(--font-main);
  background:
    radial-gradient(circle at 10% 0, #101739 0, transparent 50%),
    radial-gradient(circle at 90% 100%, #0b3a4f 0, transparent 55%),
    var(--bg);
  color: var(--text-main);
}

/* Full screen, meilleure utilisation verticale */
.page {
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 1.25rem;
}

.card {
  margin: auto;
  width: 100%;
  max-width: 520px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.4rem 1.7rem;
  box-shadow: var(--shadow-strong);
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: grid;
  row-gap: 1.1rem;
}

/* Typo plus grande sur mobile, avec clamp pour garder la lisibilité.[web:11][web:12] */
.card__header {
  text-align: left;
}

.card__title {
  font-size: clamp(1.4rem, 1.2rem + 1vw, 1.9rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0 0 0.3rem;
}

.card__title-accent {
  color: var(--accent-strong);
}

.card__subtitle {
  margin: 0;
  font-size: clamp(0.9rem, 0.85rem + 0.4vw, 1rem);
  color: var(--text-muted);
}

/* Accent cyan réutilisable */
.text-accent {
  color: var(--accent);
}

.text-accent-strong {
  color: var(--accent-strong);
}

/* Countdown occupe plus d'espace, chiffres plus gros */
.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
}

.countdown__unit {
  background: radial-gradient(circle at 10% 0, #172039 0, #080c1a 70%);
  border-radius: 16px;
  padding: 0.8rem 0.4rem;
  text-align: center;
  border: 1px solid var(--accent-soft);
}

.countdown__value {
  display: block;
  font-size: clamp(1.5rem, 1.2rem + 1.8vw, 2.2rem);
  font-weight: 600;
}

.countdown__label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.card__message {
  margin: 0;
  font-size: clamp(0.9rem, 0.85rem + 0.3vw, 1rem);
  color: var(--text-muted);
}

/* Bloc offre plus dense, mais lisible */
.offer {
  background: linear-gradient(135deg, rgba(63, 209, 255, 0.14), transparent);
  border-radius: 16px;
  padding: 0.9rem 0.9rem 0.95rem;
  border: 1px solid var(--accent-soft);
}

.offer__title {
  margin: 0 0 0.35rem;
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.1rem);
}

.offer__text,
.offer__note {
  margin: 0 0 0.45rem;
  font-size: clamp(0.85rem, 0.8rem + 0.2vw, 0.95rem);
  color: var(--text-muted);
}

.offer__code {
  margin: 0.1rem 0 0.4rem;
  font-size: clamp(0.9rem, 0.85rem + 0.3vw, 1rem);
}

#promo-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.27rem 0.7rem;
  border-radius: 999px;
  background: rgba(5, 7, 17, 0.96);
  border: 1px dashed rgba(63, 209, 255, 0.8);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* État fin de compte à rebours */
.card--finished .countdown {
  opacity: 0.3;
}

.card--finished .card__message {
  color: var(--accent);
}

/* Légères améliorations sur écrans plus larges */
@media (min-width: 600px) {
  .card {
    padding: 1.9rem 2rem 2rem;
    max-width: 600px;
  }

  .countdown {
    gap: 0.8rem;
  }
}