/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem 0;
    text-align: center;
    color: white;
}

.title {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Main content */
.main {
    padding: 3rem 0;
}


/* Loading spinner */
.loading {
    text-align: center;
    padding: 3rem;
    color: white;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(var(--columns), 1fr);
    gap: 15px;
    margin-top: 2rem;
    width: 100%;
    padding: 10px;
}

.gallery-item {
    background: white;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    aspect-ratio: 1;
}

.gallery-item:hover {
    transform: scale(1.02);
    z-index: 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

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

/* No images message */
.no-images {
    text-align: center;
    padding: 4rem 2rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    color: #4a5568;
}

.no-images p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.help-text {
    font-size: 0.9rem;
    color: #718096;
}

.no-images code {
    background: #edf2f7;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    margin: 2% auto;
    width: 90%;
    max-width: 1000px;
    height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    transition: color 0.3s ease;
}

.close:hover {
    color: #667eea;
}

.modal-image {
    max-width: 100%;
    max-height: 70%;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.modal-info {
    text-align: center;
    color: white;
    margin-top: 2rem;
}

.modal-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-info p {
    opacity: 0.8;
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 2rem;
    padding: 1rem 1.5rem;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
    pointer-events: all;
    backdrop-filter: blur(10px);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

/* Responsive design */
@media (max-width: 768px) {
    .title {
        font-size: 2rem;
    }
    
    .modal-content {
        width: 95%;
        height: 95%;
    }
    
    .nav-btn {
        font-size: 1.5rem;
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .close {
        top: 10px;
        right: 15px;
        font-size: 1.5rem;
    }
}