/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Roboto, sans-serif;
  /* Dégradé de fond : Noir vers un Violet très sombre */
  background: linear-gradient(135deg, #000000, #1a0a2e);
  background-attachment: fixed;
  color: white;
  min-height: 100vh;
}

/* ===== CONTAINER 40 (HEADER/TOP SECTION) ===== */
.container40 {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 90px;
  z-index: 1000;
  
  display: flex;
  align-items: center;
  padding: 0 40px;
  gap: 15px;

  /* Glassmorphism sombre */
  background: rgba(10, 5, 20, 0.7); /* Teinte de fond très légèrement violette */
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  
  transition: margin-left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.container40.shifted {
  margin-left: 253px;
}

/* ===== CONTAINER 50 (MAIN CARD/SECTION) ===== */
.container50 {
  position: relative;
  top: 140px; /* Espace pour le header fixe */
  margin: 0 auto 40px;
  width: 90%;
  max-width: 800px;
  padding: 30px;
  
  /* Style de la carte Glassmorphism */
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  
  text-align: center;
  transition: margin-left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.container50.shifted {
  margin-left: calc(253px + 5%);
}

/* ===== BUTTONS DANS CONTAINER 50 ===== */
.container50 button {
  display: block;
  width: 100%;
  margin: 15px 0;
  padding: 16px;
  
  font-size: 18px;
  font-weight: 600;
  color: #000;
  background: #ffffff; /* Bouton blanc par défaut */
  
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: 0.3s all ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.container50 button:hover {
  background: #8e44ad; /* Violet vibrant au survol */
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(142, 68, 173, 0.4); /* Ombre portée violette */
}

/* ===== OUTIL CARD (INNER CARDS) ===== */
.outil-card {
  background: rgba(255, 255, 255, 0.03); /* Encore plus subtil */
  padding: 20px;
  margin: 20px 0;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
}

.outil-card h3 {
  color: #c39bd3; /* Violet clair pour les titres */
  margin-bottom: 10px;
}

.outil-card button {
  width: auto;
  padding: 10px 25px;
  font-size: 14px;
  background: #4a235a; /* Violet très sombre */
  color: white;
}

.outil-card button:hover {
  background: #6c3483; /* Violet moyen au survol */
}

/* ===== RESPONSIVE / MOBILE ===== */
@media (max-width: 768px) {
  .container40 {
    padding: 0 20px;
    height: 70px;
  }

  .container50 {
    top: 100px;
    width: 95%;
    padding: 20px;
  }

  .container50 button {
    font-size: 16px;
    padding: 14px;
  }

  .container50.shifted, .container40.shifted {
    margin-left: 0; /* On annule le shift sur mobile */
  }
}
.info-box {
  background: rgba(170, 0, 255, 0.08);
  border-left: 4px solid #d400ff;
  padding: 12px 15px;
  margin: 15px 0 20px;
  border-radius: 10px;
  font-size: 14px;
  color: #eaeaea;
  backdrop-filter: blur(5px);
  box-shadow: 0 0 10px rgba(255, 0, 234, 0.1);
}