/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

/* Container */
.gallery-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

h1 {
    margin-bottom: 30px;
    color: #2c3e50;
    font-size: 2.5rem;
}

/* Gallery Grid Styling (Responsive) */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 10px;
}

/* Gallery Items & Hover Effects */
.gallery-item {
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 250px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

/* Zoom effect on hover */
.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

/* Lightbox Modal (Hidden by default) */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

/* Lightbox Image */
.lightbox-img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

/* Buttons Styling */
.close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
    transition: color 0.3s;
}

.close-btn:hover {
    color: #ff4d4d;
}

.nav-btn {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: none;
    font-size: 24px;
    padding: 15px 20px;
    cursor: pointer;
    border-radius: 5px;
    user-select: none;
    transition: background 0.3s;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.prev-btn {
    left: 30px;
}

.next-btn {
    right: 30px;
}

/* Responsive adjustments for smaller screens */
@media (max-width: 768px) {
    .nav-btn {
        padding: 10px 15px;
        font-size: 18px;
    }
    .prev-btn { left: 10px; }
    .next-btn { right: 10px; }
    h1 { font-size: 2rem; }
}