body {
  background-color: #1e1e1e; /* gris très foncé, plus doux */
  color: #cfcfcf;
  /* le reste de tes styles... */
}


header {
  padding: 3rem 1rem;
  text-align: center;
  background-color: #101010; /* plus sombre */
  box-shadow: none; /* ombre supprimée pour sobriété */
  margin-bottom: 2rem;
}

header h1 {
  font-weight: 600;
  font-size: 2.5rem;
  margin-bottom: 0.3rem;
  color: #e0e0e0; /* un peu plus clair que le texte */
}

header p {
  color: #999999; /* plus foncé, plus doux */
  font-size: 1.1rem;
  margin-bottom: 0;
}

nav.navbar {
  background-color: #121212; /* sombre */
  padding: 0.5rem 1rem;
  margin-bottom: 3rem;
  justify-content: center;
  box-shadow: none;
}

nav.navbar .navbar-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 2rem;
  justify-content: center;
}

nav.navbar .navbar-nav .nav-link {
  color: #888888; /* plus sombre */
  font-weight: 500;
  font-size: 1rem;
  text-decoration: none;
  transition: color 0.3s;
}

nav.navbar .navbar-nav .nav-link:hover,
nav.navbar .navbar-nav .nav-link:focus {
  color: #d1d1d1;
  text-decoration: underline;
}

section {
  max-width: 700px;
  margin: 0 auto 4rem;
  padding: 1rem 2rem;
  background-color: #121212; /* sombre */
  border-radius: 6px;
  box-shadow: none;
}

section h2 {
  font-weight: 600;
  font-size: 2rem;
  margin-bottom: 1.2rem;
  border-bottom: 1.5px solid #333333;
  padding-bottom: 0.3rem;
  color: #ddd;
}

ul {
  padding-left: 1.2rem;
  color: #bbb;
}

ul li {
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

h5 {
  margin-top: 2rem;
  font-weight: 600;
  color: #999;
}

/* Pour les liens dans le contenu */
a {
  color: #5599ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: #77aaff;
}

/* Mode clair */
body.light-theme {
  background-color: #f9f9f9; /* clair */
  color: #222; /* texte bien sombre */
}


body.light-theme header {
  background-color: #eee;
  color: #222;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

body.light-theme header h1,
body.light-theme header p {
  color: #222; /* bien sombre */
}



body.light-theme nav.navbar {
  background-color: #ddd;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

body.light-theme nav.navbar .navbar-nav .nav-link {
  color: #555;
}

body.light-theme nav.navbar .navbar-nav .nav-link:hover,
body.light-theme nav.navbar .navbar-nav .nav-link:focus {
  color: #000;
}

body.light-theme section {
  background-color: #fff;
  color: #222;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

body.light-theme h2, 
body.light-theme h5, 
body.light-theme ul li {
  color: #333;
}

body.light-theme a {
  color: #0066cc;
}

body.light-theme a:hover {
  color: #004999;
}

/* Transition douce */
body, header, nav.navbar, section {
  transition: background-color 0.3s ease, color 0.3s ease;
}

#toggle-theme {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #222;
  color: #eee;
  border: none;
  padding: 10px 15px;
  border-radius: 5px;
  cursor: pointer;
  box-shadow: 0 0 5px rgba(0,0,0,0.5);
  font-size: 1.2rem;
  z-index: 1000;
  transition: background-color 0.3s, color 0.3s;
}

#toggle-theme:hover {
  background-color: #555;
  color: #fff;
}

.certif-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.certif-card {
  background-color: #1a1a1a;
  color: #eee;
  text-decoration: none;
  border-radius: 10px;
  padding: 1.2rem;
  width: 280px;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.certif-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.15);
}

.certif-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.certif-card p {
  margin: 0;
  font-size: 0.95rem;
  color: #ccc;
}

body.light-theme .certif-card {
  background-color: #f1f1f1;
  color: #111;
}

body.light-theme .certif-card p {
  color: #555;
}

.card-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 2rem;
}

/* sombre par défaut */
/* Conteneurs */
.card-container,
.certifications-container,
.certif-container,
.stages-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  align-items: flex-start;
  margin-top: 2rem;
}

/* Cartes générales */
.card,
.certif-card {
  flex: 1 1 250px;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  gap: 15px;
  text-align: center;
  transition: all 0.3s;
}

/* Couleurs par défaut (mode sombre) */
.card,
.certif-card {
  background-color: #1e1e1e;
  color: #eee;
}

.card:hover,
.certif-card:hover {
  background-color: #292929;
  transform: scale(1.03);
  box-shadow: 0 0 15px rgba(255,255,255,0.15);
}

/* Texte secondaire */
.card p,
.certif-card p {
  color: #aaa;
  font-size: 0.9rem;
  margin: 0;
}

/* Boutons */
.btn-certif {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: #4c8ef7;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 0.5rem;
  transition: background-color 0.3s;
}

.btn-certif:hover {
  background-color: #6ea7ff;
}

/* Mode clair */
body.light-theme .card,
body.light-theme .certif-card {
  background-color: #f1f1f1;
  color: #222;
}

body.light-theme .card:hover,
body.light-theme .certif-card:hover {
  background-color: #e2e2e2;
}

body.light-theme .card p,
body.light-theme .certif-card p {
  color: #555;
}


.btn-certif:hover {
  background-color: #6ea7ff;
}

.card.disabled {
  opacity: 0.6;
  pointer-events: none;
}

.btn-certif.inactive {
  background-color: #666;
  cursor: not-allowed;
}

.pdf-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  margin-top: 15px;
  transition: opacity 0.5s ease;
  opacity: 1;
}

.pdf-gallery iframe {
  width: 100%;
  height: 300px;
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease;
}

.pdf-gallery iframe:hover {
  transform: scale(1.03);
}

/* Animation d’apparition */
.pdf-gallery.hidden {
  opacity: 0;
  pointer-events: none;
  height: 0;
  overflow: hidden;
  margin: 0;
  padding: 0;
  transition: opacity 0.5s ease, height 0.3s ease;
}

.interets-list {
  list-style: none;
  padding: 0;
}

.interets-list li {
  font-size: 1.1em;
  margin: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.interets-list i {
  color: #ffcc00; /* tu peux changer la couleur pour matcher ton thème */
  font-size: 1.2em;
}
/* Mode clair pour les centres d'intérêts */
body.light-theme .interets-list li {
  color: #333;
}
body.light-theme .interets-list i {
  color: #ff9900;
}

.stages-container {
  display: flex;
  gap: 20px;
  justify-content: space-between;
  align-items: stretch; /* force la même hauteur */
  flex-wrap: wrap;      /* responsive : passe en colonne si écran trop petit */
  margin-top: 20px;
  max-width: 900px;     /* largeur max du container */
  margin-left: auto;
  margin-right: auto;
}

.card {
  flex: 1 1 45%;        /* 2 cartes côte à côte */
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 15px;
}


/* prévisualisation en format A4 */
.attestation embed {
  width: 100%;
  aspect-ratio: 210 / 297; /* ratio A4 */
  border: 1px solid #444;
  border-radius: 8px;
  margin-bottom: 10px;
}

/* Bouton retour sombre par défaut */
.btn-retour {
  display: inline-block;
  margin-bottom: 20px;
  padding: 8px 15px;
  background-color: #333;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s, color 0.3s;
}

.btn-retour:hover {
  background-color: #555;
}

/* Bouton retour en mode clair */
body.light-theme .btn-retour {
  background-color: #eee; /* clair comme tes sections */
  color: #222;            /* texte sombre */
}

body.light-theme .btn-retour:hover {
  background-color: #ddd; /* un peu plus foncé au hover */
}