/* ==========================================================================
   CSS Custom Properties for Theming
   ========================================================================== */
:root {
    /* Background colors */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --bg-card: #606060;
    --bg-hover: #505050;
    
    /* Text colors */
    --text-primary: #e0e0e0;
    --text-secondary: #999;
    --text-muted: #ccc;
    
    /* Link colors */
    --link-color: #66b3ff;
    --link-hover: #99ccff;
    
    /* Border colors */
    --border-color: #555;
    --border-hover: #777;
    
    /* Additional colors */
    --text-tertiary: #888;
    --text-quaternary: #666;
    --text-light: #bbb;
    --accent-red: #ff6b6b;
    --bg-button-hover: #666;
    --text-white: white;
    
    /* Code block colors */
    --code-bg: #2d2d2d;
    --code-text: #f8f8f2;
    --code-border: #444;
    --code-inline-bg: #e8e8e8;
    --code-inline-text: #333;
    
    /* Shadow colors */
    --shadow-medium: rgba(0,0,0,0.4);
    --shadow-light: rgba(0,0,0,0.3);
    
    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
}


body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

header {
    background-color: var(--bg-card);
    color: var(--text-primary);
    padding: 0.5rem 0;
    box-shadow: 0 2px 4px var(--shadow-medium);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav h1 {
    margin: 0;
    font-size: 1.25rem;
}

nav h1 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: opacity 0.3s;
}

nav h1 a:hover {
    opacity: 0.8;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
}

nav a {
    color: var(--text-primary);
    text-decoration: none;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

main {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow-medium);
    /* iOS-specific fixes */
    width: calc(100% - 2rem);
    box-sizing: border-box;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature {
    padding: 1.5rem;
    background-color: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.feature h4 {
    margin-top: 0;
    color: var(--text-primary);
}

footer {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    text-align: left;
    padding: 1rem;
    margin-top: auto;
}

footer p {
    margin: 0;
    font-size: 0.875rem;
}

/* Gallery Styles */
.gallery-container {
    max-width: 1400px;
    background-color: var(--bg-primary);
    /* iOS-specific fixes for centering */
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

/* Gallery headings alignment */
.gallery-container h2,
.gallery-container h3 {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1rem;
    box-sizing: border-box;
}

.gallery-nav {
    margin-bottom: 1.5rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--bg-card);
    border-top: 1px solid var(--bg-card);
    font-size: 0.9rem;
    display: block;
    width: 100%;
    max-width: 1400px;
    position: sticky;
    top: 45px; /* Adjust based on header height */
    background-color: var(--bg-primary);
    z-index: 100;
    margin-top: 0;
}

.nav-link {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-separator {
    color: var(--text-quaternary);
    margin: 0 0.5rem;
}

.nav-current {
    color: var(--text-primary);
    font-weight: 500;
}

.folder-description {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 8px;
    color: var(--text-primary);
    line-height: 1.6;
    /* position: sticky; */
    top: 100px; /* Adjust based on header + nav height */
    z-index: 90;
}

.folder-description h1,
.folder-description h2,
.folder-description h3,
.folder-description h4,
.folder-description h5,
.folder-description h6 {
    color: var(--text-primary);
}

.folder-description p {
    margin-bottom: 1rem;
}

.folder-description p:last-child {
    margin-bottom: 0;
}

.folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.folder-item {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-primary);
    transition: transform 0.2s, box-shadow 0.2s;
    overflow: hidden;
}

.folder-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-medium);
}

.folder-preview {
    width: 100%;
    height: 160px;
    position: relative;
    overflow: hidden;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.folder-icon {
    font-size: 3rem;
    color: var(--text-tertiary);
}

.preview-images {
    position: relative;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 2px;
}

.preview-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s;
}

.preview-img:only-child {
    grid-column: 1 / -1;
    grid-row: 1 / -1;
}

.preview-images:has(.preview-img:nth-child(2):last-child) .preview-img {
    grid-row: 1 / -1;
}

.preview-images:has(.preview-img:nth-child(3):last-child) .preview-img:first-child {
    grid-column: 1 / -1;
}

.preview-img-1 {
    z-index: 4;
}

.preview-img-2 {
    z-index: 3;
}

.preview-img-3 {
    z-index: 2;
}

.preview-img-4 {
    z-index: 1;
}

.folder-info {
    padding: 1rem;
    text-align: center;
}

.folder-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.folder-count {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.folder-description-preview {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.5rem;
    line-height: 1.3;
}

.image-grid {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    /* iOS-specific fixes */
    width: 100%;
    box-sizing: border-box;
    padding: 0 1rem;
}

/* Desktop-specific padding override */
@media (min-width: 769px) {
    .image-grid {
        padding: 0 1rem;
    }
}

.masonry-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-width: 0;
}

.image-item {
    position: relative;
    background: var(--bg-card);
    border-radius: 0;
    overflow: hidden;
    transition: transform 0.2s;
    display: block;
}

.image-item:hover {
    transform: scale(1.02);
}

/* New image highlighting */
.image-item.is-new {
    position: relative;
}

.image-item.is-new::before {
    content: "NEW";
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent-red);
    color: var(--text-white);
    padding: 4px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 4px;
    z-index: 10;
    box-shadow: 0 2px 4px var(--shadow-light);
}

.image-link {
    display: block;
    position: relative;
}

.image-item img {
    width: 100%;
    height: auto;
    display: block;
}

.gallery-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 3rem;
    padding: 2rem 0;
}

.page-link {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
}

.page-link:hover {
    background: var(--border-color);
}

.page-info {
    font-weight: 500;
}

.empty-gallery {
    text-align: center;
    padding: 4rem 0;
    color: var(--text-secondary);
}

/* Gallery Preview Component */
.gallery-preview-component {
    margin: 2rem 0;
}

.gallery-preview-component .preview-masonry {
    display: flex;
    gap: 1.5rem;
    /* iOS-specific fixes */
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
    padding: 0 1rem;
}

.gallery-preview-component .masonry-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-width: 0;
}

.gallery-preview-component .preview-item {
    background: var(--bg-card);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s, box-shadow 0.3s;
    display: block;
}

.gallery-preview-component .preview-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow-medium);
}

.gallery-preview-component .preview-image {
    position: relative;
    overflow: hidden;
    background: transparent;
    display: block;
}

.gallery-preview-component .preview-image img {
    object-fit: cover;
    transition: transform 0.3s;
    display: block;
}

.gallery-preview-component .preview-item:hover .preview-image img {
    transform: scale(1.05);
}

/* New image highlighting in gallery preview */
.gallery-preview-component .preview-item.is-new {
    position: relative;
}

.gallery-preview-component .preview-item.is-new::before {
    content: "NEW";
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent-red);
    color: var(--text-white);
    padding: 4px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 4px;
    z-index: 10;
    box-shadow: 0 2px 4px var(--shadow-light);
}

.gallery-preview-component .preview-footer {
    text-align: center;
    margin-top: 2rem;
}

.gallery-preview-component .btn-explore {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s;
}

.gallery-preview-component .btn-explore:hover {
    background: var(--bg-button-hover);
}

/* Mobile Styles */
@media (max-width: 768px) {
    nav {
        padding: 0 0.5rem;
    }
    
    main {
        padding: 1rem 0;
    }
    
    .container {
        width: calc(100% - 1rem);
        padding: 1rem 0.5rem;
        margin: 0 auto;
    }
    
    footer {
        padding: 1rem 0.5rem;
    }
    
    .gallery-container {
        padding: 0;
        margin: 0 auto;
        width: 100%;
    }
    
    .gallery-container h2,
    .gallery-container h3 {
        padding: 0 0.5rem;
    }
    
    .image-grid {
        flex-direction: column;
        gap: 1rem;
        padding: 0 0.5rem;
        width: 100%;
        margin: 0 auto;
        box-sizing: border-box;
        overflow-x: hidden;
    }
    
    .masonry-column[data-column="1"] {
        display: none;
    }
    
    .masonry-column {
        padding: 0 0.5rem;
        width: 100%;
        box-sizing: border-box;
    }
    
    .gallery-preview-component .preview-masonry {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
        width: 100%;
        margin: 0 auto;
        box-sizing: border-box;
    }
    
    .gallery-preview-component .masonry-column {
        width: 100%;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 0;
    }
    
    .gallery-preview-component .masonry-column[data-column="1"] {
        display: none;
    }
    
    .gallery-preview-component .preview-item {
        margin: 0 auto;
        width: auto;
        max-width: 100%;
    }
    
    .gallery-preview-component .preview-image {
        margin: 0 auto;
    }
    
    .gallery-preview-component .preview-image img {
        width: 100%;
        height: auto;
        display: block;
    }
}

/* iOS Safari specific fixes */
@supports (-webkit-touch-callout: none) {
    .container, .gallery-container, .image-grid, .gallery-preview-component .preview-masonry {
        -webkit-overflow-scrolling: touch;
        transform: translate3d(0, 0, 0); /* Hardware acceleration */
    }
    
    /* Safe area support for iOS devices with notches - but not for gallery containers */
    body {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
    
    /* Moved to global code block styles */
    
    main {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
    
    /* Override safe area for gallery on mobile to prevent excessive padding */
    @media (max-width: 768px) {
        .gallery-container, .image-grid {
            margin-left: calc(-1 * env(safe-area-inset-left));
            margin-right: calc(-1 * env(safe-area-inset-right));
            padding-left: env(safe-area-inset-left);
            padding-right: env(safe-area-inset-right);
        }
        
        .gallery-container .container {
            margin-left: 0;
            margin-right: 0;
            width: 100%;
        }
        
        main {
            padding-left: 0;
            padding-right: 0;
        }
    }
}
/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Container widths */
.container-sm {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.container-md {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.container-lg {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* Card component */
.card {
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.card h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1.1rem;
}

/* ==========================================================================
   Common Components
   ========================================================================== */

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
    border: 1px solid transparent;
}

.btn:hover {
    background: var(--bg-hover);
}

.btn-primary {
    background: var(--link-color);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: var(--link-hover);
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--link-hover);
}

/* Time/Date displays */
time {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Breadcrumbs */
.breadcrumbs {
    margin-bottom: var(--spacing-md);
}

.breadcrumbs a {
    color: var(--link-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.breadcrumbs a:hover {
    text-decoration: underline;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.pagination a {
    color: var(--link-color);
    text-decoration: none;
}

.pagination a:hover {
    text-decoration: underline;
}

.page-info {
    color: var(--text-secondary);
}

/* Code blocks */
pre {
    background: var(--code-bg);
    color: var(--code-text);
    padding: var(--spacing-md);
    overflow-x: auto;
    border-radius: 4px;
    margin: var(--spacing-md) 0;
    border: 1px solid var(--code-border);
}

code {
    background: var(--code-inline-bg);
    color: var(--code-inline-text);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
}

pre code {
    background: none;
    color: inherit;
    padding: 0;
    font-size: 0.9em;
    line-height: 1.5;
}

/* Blockquotes */
blockquote {
    border-left: 4px solid var(--border-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

th, td {
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm);
    text-align: left;
}

th {
    background: var(--bg-card);
    color: var(--text-primary);
    font-weight: bold;
}

/* ==========================================================================
   Responsive Utilities
   ========================================================================== */
@media (max-width: 768px) {
    .container-sm,
    .container-md,
    .container-lg {
        padding: var(--spacing-md);
    }
    
    .hide-mobile {
        display: none;
    }
}

@media (min-width: 769px) {
    .show-mobile {
        display: none;
    }
}