/* --- Réinitialisation et variables de base --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-color: #fcfcfc;
  --text-color: #111111;
  --accent-color: #000000;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* --- Conteneur global --- */
.container {
  width: 100%;
  max-width: 680px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

/* --- Logo centré & Responsive --- */
.header {
  width: 100%;
  display: flex;
  justify-content: center;
}

.logo {
  max-width: 280px; /* Ajustez la taille selon votre logo */
  height: auto;
  display: block;
}

/* --- Section Contenu --- */
.content h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.tagline {
  font-size: 1.125rem;
  color: #555555;
  margin-bottom: 2rem;
}

/* --- Boutons d'action --- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn.primary {
  background-color: var(--accent-color);
  color: #ffffff;
}

.btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

/* --- Pied de page --- */
.footer {
  font-size: 0.875rem;
  color: #888888;
  margin-top: 1rem;
}

/* --- Adaptation mobile (< 480px) --- */
@media (max-width: 480px) {
  .logo {
    max-width: 140px;
  }
  
  .content h1 {
    font-size: 1.75rem;
  }

  .tagline {
    font-size: 1rem;
  }
}