:root {

  --charte-vert: #00b558;
  --charte-rose: #ff82ba;
  --charte-bleu: #0079fc;
  --charte-orange: #ff6338;
  --charte-jaune: #ffd62c;
  --charte-bleu-fonce: #1c2939;

  --color-fond: #F8F6F0;
  --color-texte: #2A2346;
  --color-accent: var(--charte-bleu);
  --color-second: var(--charte-vert);
  --color-muted: #6c638c;
  --color-bordure: rgba(42, 35, 70, 0.15);

  --font-display: "Caveat", cursive;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-fond: #1a1938;
    --color-texte: #F8F6F0;
    --color-accent: var(--charte-bleu);
    --color-second: var(--charte-vert);
    --color-muted: #b3add6;
    --color-bordure: rgba(248, 246, 240, 0.15);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-texte);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--color-fond);
}

.page {
  flex: 1;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.logo {
  width: 220px;
  height: auto;
  margin-bottom: 40px;
}

.logo img {
  width: 100%;
  height: auto;
  display: block;
}

.logo .logo-fond-clair {
  display: block;
}

.logo .logo-fond-sombre {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .logo .logo-fond-clair {
    display: none;
  }

  .logo .logo-fond-sombre {
    display: block;
  }
}

.cartouche {
  max-width: 600px;
  width: 100%;
  padding: 0;
}

.cartouche p {
  font-size: 1.15rem;
  margin-bottom: 24px;
  color: var(--color-texte);
}

.tagline {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 34px;
  line-height: 1.1;
}

@media (prefers-color-scheme: dark) {
  .tagline {
    color: var(--charte-orange);
  }
}

.cta {
  display: inline-block;
  background: var(--color-accent);
  color: #000;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  margin-top: 24px;
  padding: 14px 28px;
  border-radius: 999px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.cta:hover,
.cta:focus {
  background: var(--color-second);
  transform: translateY(-2px);
}

.cta:focus-visible {
  outline: 3px solid var(--color-texte);
  outline-offset: 3px;
}

.cta-secondaire {
  display: inline-block;
  margin-top: 16px;
  color: var(--color-muted);
  font-size: 0.95rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.cta-secondaire:hover,
.cta-secondaire:focus {
  color: var(--color-texte);
  border-color: var(--color-texte);
}

.cta-secondaire:focus-visible {
  outline: 2px solid var(--color-texte);
  outline-offset: 2px;
  border-radius: 2px;
}

footer {
  width: 100%;
  text-align: center;
  padding: 24px;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Videos */

.grille-videos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  width: 100%;
  max-width: 960px;
  margin-top: 32px;
}

.video-card {
  text-align: left;
}

.video-titre {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-texte);
}

.video-placeholder {
  width: 100%;
  background: var(--color-fond);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-bordure);
}

.video-placeholder video {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #000;
}

.video-placeholder a {
  color: var(--color-accent);
  text-decoration: underline;
}

@media (max-width: 480px) {
  .page {
    padding: 32px 18px;
  }

  .logo {
    width: 180px;
  }

  .tagline {
    font-size: 2rem;
  }

  .cartouche p {
    font-size: 1.05rem;
  }
}