:root {
  --white: #fff;
  --bg-start: #000000;
  --bg-end: #111111;
  --card: #ffffff;
  --text: #ffffff;
  --muted: #111111;
  --primary: #ffffff; /* boutons */
  --primary-600: #e5e5e5; /* Effet */
  --success: #ffffff; /* grayscale message */
  --danger: #ffffff;
  --ring: rgba(255, 255, 255, 0.45);
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial,
    "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--bg-start);
  display: grid;
  place-items: center;
  /* REMPLACE LE CHEMIN DE L'IMAGE */
  background-image: url(images/bg_site.jpg);
  background-size: cover;
}

.site-brand {
  position: fixed;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  z-index: 10;
}
.site-brand img {
  height: 40px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}

.container {
  width: min(100%, 1080px);
  padding: 32px 20px 48px;
}
header {
  text-align: center;
  color: #000;
}
header h1 {
  margin: 10px 0 8px;
  font-weight: 800;
  letter-spacing: 0.4px;
  font-size: clamp(28px, 4vw, 40px);
}
header p {
  margin: 0 auto;
  max-width: 720px;
  opacity: 0.9;
  line-height: 1.6;
  font-size: clamp(14px, 2.2vw, 16px);
}

.timer {
  margin: 28px auto 32px;
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: clamp(8px, 1.8vw, 16px);
  width: min(100%, 860px);
}

.unit {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 10px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.unit .card {
  background: var(--card);
  border-radius: 14px;
  text-align: center;
  padding: 18px 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}
.value {
  font-size: clamp(34px, 8vw, 60px);
  font-weight: 800;
  letter-spacing: 2px;
}
.label {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 2.5px;
  color: var(--bg-start);
  font-weight: 600;
  text-transform: uppercase;
}

footer {
  margin-top: 34px;
  text-align: center;
  color: #f8f8f8;
  opacity: 0.85;
  font-size: 13px;
}

/* Responsive layout */
@media (max-width: 1024px) {
  .container {
    padding: 28px 18px 40px;
  }
  .timer {
    gap: 12px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 24px 16px 36px;
  }
  .timer {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
    width: min(100%, 640px);
    gap: 12px;
  }
  .unit .card {
    padding: 16px 10px;
  }
  header p {
    padding: 0 8px;
  }
  .site-brand img {
    height: 32px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 20px 12px 28px;
  }
  .timer {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .value {
    font-size: clamp(28px, 12vw, 44px);
  }
  .label {
    font-size: 11px;
    letter-spacing: 2px;
  }
  .site-brand {
    top: 12px;
    left: 12px;
  }
  .site-brand img {
    height: 28px;
  }
}