:root {
    --bg-gradient: linear-gradient(to bottom, #f2d6a0, #d4aa6a, #b07c3a);
    --card-bg: linear-gradient(145deg, #f3e0c3, #d4b07a);
    --gold: #b8860b;
}

/* Page Background */
.container-background{
    background: linear-gradient(rgba(255,255,255,0.15), rgba(255,255,255,0.15)), var(--bg-gradient);
    min-height: 100vh;
    padding: 30px 15px;
}

/* Image Card */
.image-card {
    background: var(--card-bg);
    border-radius: 14px;
    overflow: hidden;
    border: 2px solid var(--gold);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    transition: 0.3s ease;
    cursor: pointer;
}

.image-card:hover {
    transform: scale(1.05);
}

/* Image */
.image-card img {
    width: 100%;
    height: 260px;
    object-fit: contain;
    display: block;
}

/* Modal Image */
#previewImage {
    max-height: 85vh;
    object-fit: contain;
}

/* Close Button */
.modal-close-btn {
    position: absolute;
    top: 10px;
    right: 12px;
    background: rgba(0,0,0,0.8);
    color: #fff;
    border: none;
    font-size: 22px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 20;
}

.modal-close-btn:hover {
    background: red;
}