* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 1rem 0;
}

h1 {
    margin-bottom: 0.5rem;
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.gallery-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

button {
    padding: 0.5rem 1rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

select {
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid #ddd;
}

.gallery-container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

#image-viewer {
    position: relative;
    padding: 1rem;
    text-align: center;
}

#current-image {
    max-width: 100%;
    max-height: 500px;
    display: block;
    margin: 0 auto;
    border-radius: 4px;
}

#image-info {
    margin-top: 0.5rem;
    font-style: italic;
    color: #666;
}

#thumbnail-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.5rem;
    padding: 1rem;
    background-color: #f9f9f9;
}

.thumbnail {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.2s;
}

.thumbnail:hover {
    transform: scale(1.05);
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: #2c3e50;
    color: white;
    margin-top: 2rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .gallery-controls {
        flex-direction: column;
    }
    
    #current-image {
        max-height: 300px;
    }
}