html {
  height: 100%;
  scrollbar-gutter: stable;
}
body {
  margin: 0;
  min-height: 100vh; /* s'assure que ça couvre toujours la hauteur de l'écran */
  background: linear-gradient(to bottom, #cde4f5, #f8d7e3);
  background-attachment: fixed; /* Empêche le dégradé de se répéter en scroll */
  background-repeat: no-repeat;
  background-size: cover;
}
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px;
}
header {
  background-color: rgba(255, 255, 255, 0.8);
  padding: 15px 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  border-bottom: 2px solid #add8e6;
}
nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
}
nav ul li a {
  text-decoration: none;
  color: #333;
  font-weight: bold;
  padding: 8px 15px;
  border-radius: 5px;
  transition: background-color 0.3s ease, color 0.3s ease;
}
nav ul li a:hover {
  background-color: #ffd1dc;
  color: #000;
}
h1 {
  font-size: 3em;
  text-align: center;
  color: #333;
  margin-bottom: 40px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}
.gallery-item {
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  border: 2px solid #ffd1dc;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.gallery-item:hover {
  transform: translateY(-5px);
  border-color: #add8e6;
}
.gallery-item-image-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 100%;
  overflow: hidden;
  border-bottom: 2px solid #add8e6;
}
.gallery-item img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}
.gallery-item .title {
  padding: 15px;
  font-size: 1.2em;
  font-weight: bold;
  color: #333;
  text-align: center;
}
main {
  flex-grow: 1;
}
footer {
  text-align: center;
  padding: 20px;
  background-color: rgba(255, 255, 255, 0.8);
  border-top: 2px solid #add8e6;
  color: #555;
}

.lb-target {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  padding: 24px;
}
.lb-target:target { display: flex; }

.lb-target img {
  max-width: 95vw;
  max-height: 95vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
}

.lb-close {
  position: fixed;
  inset: 0;
  display: block;
  content: "";
  z-index: 0;
}

.lb-content { position: relative; z-index: 1; }

.lb-close::after {
  content: "\00d7"; /* × */
  position: absolute;
  top: 16px;
  right: 20px;
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  font-size: 26px;
  color: #fff;
  background: rgba(0,0,0,0.45);
  border-radius: 18px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.lb-close:hover::after { background: rgba(0,0,0,0.6); }

.gallery-item img { cursor: default; }