/* Basic Reset & Body Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background-color: #f4f4f4;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

h1 {
    margin-bottom: 10px;
}

/* Responsive Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.gallery-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 1 / 1;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.gallery-thumb:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

/* Modal Overlay Styles */
.modal-overlay {
    display: none; 
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
}

.modal-open {
    display: flex;
}

.modal-content {
    display: block;
    margin: auto;
    max-width: 90%;
    max-height: 90vh;
    animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}

.modal-close:hover {
    color: #bbb;
}

/* PDF Download Section Styles */
.pdf-download-section {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #ddd;
}

.btn-download {
    display: inline-block;
    margin-top: 1rem;
    padding: 12px 24px;
    background-color: #007BFF;
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
    border-radius: 8px;
    transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out;
}

.btn-download:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}