/* ==========================================================================
   CSS LANDING PAGE (landing.css)
   Thème : Sombre & Violet
   ========================================================================== */

/* --- Boutons de Navigation Spécifiques (Accueil) --- */
header nav .nav-btn-alt {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 8px;
  transition: all 0.3s ease;
  font-weight: 500;
}
header nav .nav-btn-alt:hover {
  background-color: var(--bg-surface-2);
  color: var(--text-color);
  text-decoration: none;
}

header nav .nav-btn-primary {
  padding: 0.5rem 1rem;
  border: 1px solid var(--primary-color);
  background: var(--primary-color);
  color: #fff;
  border-radius: 8px;
  transition: all 0.3s ease;
  font-weight: 500;
}
header nav .nav-btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  text-decoration: none;
}

/* --- Section Hero --- */
.hero {
  background: var(--bg-surface);
  color: var(--text-color);
  padding: 6rem 2rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-content h1 {
  font-size: 3rem;
  color: var(--text-color);
  margin-bottom: 1.5rem;
  line-height: 1.2;
  font-weight: 700;
}
.hero-content h1 .highlight {
  color: var(--primary-color); /* Utilise la couleur accent */
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Bouton principal (CTA) --- */
.btn-primary {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary-color);
  padding: 0.9rem 1.8rem;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 2px 10px var(--shadow-color);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 15px var(--glow-color-soft);
  transform: translateY(-2px);
}

/* --- Sections (Features, Advantages) --- */
.features,
.advantages {
  padding: 4rem 2rem;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  color: var(--text-color);
  margin-bottom: 3rem;
  font-weight: 600;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-surface);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px var(--shadow-color);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px var(--shadow-color), 0 0 25px var(--glow-color-soft);
}

.feature-card i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.feature-card:hover i {
  transform: scale(1.1);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Animations d'entrée (de l'original) --- */
.hidden {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive (Landing) --- */
@media (max-width: 768px) {
  .hero-content h1 { font-size: 2.2rem; }
  .hero-content p { font-size: 1rem; }
  .hero { padding: 4rem 1rem; }
  .features, .advantages { padding: 2rem 1rem; }
  .section-title { font-size: 1.8rem; }
}