body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f5f5f5;
    margin: 0;
    padding: 20px;
}



h1 {
    color: #333;
}

/* Cadre global */
.gallery-container {
   
    margin: auto;
    padding: 20px;
    border: 5px solid #4CAF50;
    border-radius: 10px;
    background: white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.gallery-item {
    width: 100%;
    height: auto;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.lightbox-content {
    max-width: 80%;
    max-height: 80%;
    border-radius: 5px;
}

.close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 30px;
    color: white;
    cursor: pointer;
}

/* Boutons de navigation */
.prev, .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.5);
    border: none;
    color: black;
    font-size: 30px;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 5px;
    transition: background 0.3s;
}

.prev { left: 10%; }
.next { right: 10%; }

.prev:hover, .next:hover {
    background: white;
}