/* Public CSS - Photo Blog Engine */

/* ===========================
   CSS Variables - Base (shared across themes)
   =========================== */
:root {
    /* Brand Colors (constant across themes) */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-secondary: #64748b;
    --color-accent: #0ea5e9;

    /* Layout */
    --content-max-width: 1200px;
    --content-narrow: 800px;
    --header-height: 72px;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Typography */
    --font-family:
        "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        sans-serif;
    --font-serif: "Georgia", "Times New Roman", serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Borders */
    --border-radius-sm: 0.25rem;
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-theme: 200ms ease;
}

/* ===========================
   Light Theme (Default)
   =========================== */
:root,
[data-theme="light"] {
    /* Semantic Colors - Background */
    --bg-primary: #ffffff;
    --bg-carouselle: white;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* Semantic Colors - Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-muted: #94a3b8;
    --text-inverted: #ffffff;

    /* Semantic Colors - Borders */
    --border-primary: #e2e8f0;
    --border-secondary: #cbd5e1;
    --border-focus: #2563eb;

    /* Semantic Colors - Surfaces */
    --surface-card: #ffffff;
    --surface-input: #ffffff;
    --surface-hover: #f1f5f9;
    --surface-active: #e2e8f0;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md:
        0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg:
        0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Component-specific */
    --header-bg: rgba(255, 255, 255, 0.8);
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
    --code-bg: #1e293b;
    --code-text: #f1f5f9;
    --inline-code-bg: #f1f5f9;
    --inline-code-text: #0f172a;

    /* Grays (for backward compatibility) */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    color-scheme: light;
}

/* ===========================
   Dark Theme
   =========================== */
[data-theme="dark"] {
    /* Semantic Colors - Background */
    --bg-primary: #0f172a;
    --bg-carouselle: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.7);

    /* Semantic Colors - Text */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #cbd5e1; /* #94a3b8; */
    --text-muted: #64748b;
    --text-inverted: #0f172a;

    /* Semantic Colors - Borders */
    --border-primary: #334155;
    --border-secondary: #475569;
    --border-focus: #3b82f6;

    /* Semantic Colors - Surfaces */
    --surface-card: #1e293b;
    --surface-input: #1e293b;
    --surface-hover: #334155;
    --surface-active: #475569;

    /* Shadows (darker for dark theme) */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
    --shadow-md:
        0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg:
        0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);

    /* Component-specific */
    --header-bg: rgba(30, 41, 59, 0.8);
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
    --code-bg: #0f172a;
    --code-text: #e2e8f0;
    --inline-code-bg: #334155;
    --inline-code-text: #e2e8f0;

    /* Brand adjustments for dark theme */
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-primary-light: rgba(59, 130, 246, 0.2);

    /* Grays (inverted for dark theme) */
    --color-gray-50: #0f172a;
    --color-gray-100: #1e293b;
    --color-gray-200: #334155;
    --color-gray-300: #475569;
    --color-gray-400: #64748b;
    --color-gray-500: #94a3b8;
    --color-gray-600: #cbd5e1;
    --color-gray-700: #e2e8f0;
    --color-gray-800: #f1f5f9;
    --color-gray-900: #f8fafc;

    color-scheme: dark;
}

/* ===========================
   Reset & Base
   =========================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    background-color: var(--bg-primary);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition:
        background-color var(--transition-theme),
        color var(--transition-theme);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===========================
   Site Layout
   =========================== */
.site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-main {
    /*flex: 1;*/
    padding: var(--spacing-md) 0;
}

.main-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===========================
   Header
   =========================== */
.site-header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-primary);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
    transition:
        background-color var(--transition-theme),
        border-color var(--transition-theme);
}

.header-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-branding {
    display: flex;
    flex-direction: column;
}

.site-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    transition: color var(--transition-theme);
}

.site-title:hover {
    color: var(--color-primary);
}

.site-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-top: -2px;
    transition: color var(--transition-theme);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background-color: var(--surface-hover);
}

.nav-dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 180px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: 50;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.dropdown-item:hover {
    background-color: var(--surface-hover);
    color: var(--text-primary);
}

/* ===========================
   Footer
   =========================== */
.site-footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: auto;
    transition: background-color var(--transition-theme);
}

.footer-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: var(--font-size-sm);
}

.footer-copyright a {
    color: var(--footer-text);
}

.light-link {
    font-weight: 700;
    text-decoration: none;
    color: inherit;
}

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

.footer-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-link {
    font-size: var(--font-size-sm);
    color: var(--footer-text);
}

.footer-link:hover {
    color: var(--text-inverted);
}

.footer-tags {
    flex: 1;
    justify-content: center;
    padding: 0 var(--spacing-xl);
}

/* ===========================
   Page Headers
   =========================== */
.page-header {
    margin-bottom: var(--spacing-2xl);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-theme);
}

.page-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    transition: color var(--transition-theme);
}

/* ===========================
   Post Grid (Homepage)
   =========================== */
.posts-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-2xl);
}

.posts-main {
    min-width: 0;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* ===========================
   Post Card
   =========================== */
.post-card {
    background: var(--surface-card);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition:
        all var(--transition-normal),
        background-color var(--transition-theme);
    text-decoration: none; /* Make sure links inside look clean */
    display: block; /* Ensure it behaves as a block element */
    position: relative;
    height: 100%; /* Ensure uniform height in grid if possible, though grid-items stretch */
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.post-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* --- HAS IMAGE STYLE --- */
.post-card.has-image {
    min-height: 320px; /* Minimum height for image cards */
    color: var(--text-inverted); /* Default text color on image */
}

.post-card-background {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.post-card-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.video-play-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    pointer-events: none;
    filter: drop-shadow(0 0 10px rgba(0, 0, 0, 0.5));
    transition: opacity var(--transition-normal);
}

.post-card:hover .post-card-background img,
.post-card:hover .post-card-background video {
    transform: scale(1.05);
}

.post-card:hover .video-play-indicator {
    opacity: 0.8;
}

/* Overlay Content for Image Cards */
.post-card-content.overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    background: linear-gradient(
        to top,
        rgba(0, 0, 0, 0.9) 0%,
        rgba(0, 0, 0, 0.4) 60%,
        rgba(0, 0, 0, 0.1) 100%
    );
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    opacity: 0;
    transition: opacity var(--transition-normal);
    color: white;
    pointer-events: auto;
}

.post-card:hover .post-card-content.overlay {
    opacity: 1;
}

.post-card-edit-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    z-index: 20;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    backdrop-filter: blur(4px);
    opacity: 0; /* Hidden by default, shown on hover */
}

.post-card:hover .post-card-edit-btn {
    opacity: 1;
}

.post-card-edit-btn:hover {
    background: white;
    transform: scale(1.1);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .post-card-edit-btn {
    background: rgba(30, 41, 59, 0.8);
    color: white;
}

[data-theme="dark"] .post-card-edit-btn:hover {
    background: var(--surface-card);
}

/* Override text colors for overlay */
.post-card-content.overlay .post-card-title {
    color: white;
    font-size: var(--font-size-lg);
}
.post-card-content.overlay .post-card-meta {
    color: rgba(255, 255, 255, 0.8);
}
.post-card-content.overlay .post-card-excerpt {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

/*.post-card-content.overlay .tag-link {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}*/
/*.post-card-content.overlay .tag-link:hover {
    background-color: white;
    color: var(--text-primary);
}*/

/* --- TEXT ONLY STYLE --- */
.post-card.text-only {
    background-color: var(--surface-card);
}

.post-card.text-only .post-card-content {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card-content {
    /* Base styles for non-overlay content */
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.post-card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    transition: color var(--transition-theme);
}

.post-card-title a {
    color: inherit;
    position: relative;
    z-index: 11;
}

.post-card-title a:hover {
    color: var(--color-primary);
}

.post-card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Text Preview for No Image Posts */
.post-card-text-preview {
    font-size: var(--font-size-base); /* Slightly larger for emphasis */
    color: var(--text-secondary);
    line-height: 1.6;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 8;
    line-clamp: 8;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    margin-bottom: var(--spacing-lg);
}

.post-card-text-preview p {
    margin-bottom: var(--spacing-sm);
}

.post-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: auto; /* Push to bottom in flex container */
}

/* ===========================
   Featured Post
   =========================== */
.featured-post {
    grid-column: 1 / -1;
}

/* Reset grid for featured post if using new card style */
/* If featured post has image, it behaves like a big card now */
.featured-post .post-card.has-image {
    min-height: 500px;
}
.featured-post .post-card-content.overlay .post-card-title {
    font-size: var(--font-size-3xl);
}
.featured-post .post-card-content.overlay .post-card-excerpt {
    font-size: var(--font-size-base);
    -webkit-line-clamp: 4;
    line-clamp: 4;
}

/* If text only, we can keep it as a flexible card */
.featured-post .post-card.text-only {
    padding: var(--spacing-md);
}

.featured-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}
/* Override badge for overlay */
.post-card-content.overlay .featured-badge {
    color: var(--color-accent); /* Brighter blue for dark bg */
}

/* ===========================
   Sidebar
   =========================== */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.sidebar-widget {
    background: var(--surface-card);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: background-color var(--transition-theme);
}

.widget-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-primary);
    transition:
        color var(--transition-theme),
        border-color var(--transition-theme);
}

/* Tag Cloud */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.tag-link:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.tag-link .count {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ===========================
   Single Post
   =========================== */
.post-single {
    max-width: var(--content-narrow);
    margin: 0 auto;
}

.post-header {
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.post-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
}

.post-meta-divider {
    width: 4px;
    height: 4px;
    background-color: var(--border-secondary);
    border-radius: 50%;
}

.post-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-theme);
}

.post-featured-image {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
}

.post-featured-image img {
    width: 100%;
}

/* Post Content */
.post-content {
    font-family: var(--font-serif);
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    transition: color var(--transition-theme);
}

.post-content h2 {
    font-family: var(--font-family);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-theme);
}

.post-content h3 {
    font-family: var(--font-family);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-theme);
}

.post-content p {
    margin-bottom: var(--spacing-lg);
}

.post-content img {
    margin: var(--spacing-xl) 0;
    border-radius: var(--border-radius-lg);
}

.post-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    font-style: italic;
    color: var(--text-tertiary);
}

.post-content pre {
    background-color: var(--code-bg);
    color: var(--code-text);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    overflow-x: auto;
    margin: var(--spacing-xl) 0;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    transition: background-color var(--transition-theme);
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background-color: var(--inline-code-bg);
    color: var(--inline-code-text);
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
    transition:
        background-color var(--transition-theme),
        color var(--transition-theme);
}

.post-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.post-content li {
    margin-bottom: var(--spacing-sm);
}

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* Post Footer */
.post-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-primary);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.post-tag {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    border-radius: 9999px;
    transition: all var(--transition-fast);
}

.post-tag:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

/* Post Navigation */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.post-nav-link {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    background: var(--surface-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-fast);
}

.post-nav-link:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
}

.post-nav-link.next {
    text-align: right;
}

.post-nav-label {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-xs);
}

.post-nav-title {
    font-weight: 600;
    color: var(--text-primary);
}

/* ===========================
   Tag Archive
   =========================== */
.tag-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-primary);
}

.tag-name {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-theme);
}

.tag-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.tag-count {
    display: inline-block;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-top: var(--spacing-md);
}

.tag-filters {
    /*display: flex;
    justify-content: center;*/
    margin-bottom: var(--spacing-md);
}

/* ===========================
   Tags (Legacy/Unused)
   =========================== */
/*
.tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.tags-item {
    position: relative;
    aspect-ratio: 1;
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
}

.tags-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.tags-item:hover img {
    transform: scale(1.05);
}

.tags-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 50%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.tags-item:hover .tags-item-overlay {
    opacity: 1;
}

.tags-item-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-xs);
}

.tags-item-date {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}
*/

/* Tags Filters */
.tags-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    justify-content: center;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--surface-card);
    border: 1px solid var(--border-primary);
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--text-inverted);
}

/* ===========================
   Pagination
   =========================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--surface-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.pagination-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination-link.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--text-inverted);
}

.pagination-link.disabled {
    color: var(--text-muted);
    cursor: not-allowed;
}

.pagination-ellipsis {
    color: var(--text-muted);
}

/* ===========================
   Empty State
   =========================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.empty-state-icon {
    font-size: 64px;
    color: var(--border-secondary);
    margin-bottom: var(--spacing-lg);
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    color: var(--text-tertiary);
}

/* ===========================
   404 Page
   =========================== */
.error-page {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.error-code {
    font-size: 120px;
    font-weight: 700;
    color: var(--border-primary);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.error-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.error-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-inverted);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    color: var(--text-inverted);
}

/* ===========================
   Theme Toggle
   =========================== */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--surface-hover);
    color: var(--text-primary);
    border-color: var(--border-secondary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
}

/* Show sun icon in dark mode (to switch to light) */
[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

/* Show moon icon in light mode (to switch to dark) */
:root:not([data-theme="dark"]) .theme-toggle .icon-moon,
[data-theme="light"] .theme-toggle .icon-moon {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
    display: none;
}

/* Lightbox overlay for dark mode */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background-color: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition:
        opacity var(--transition-normal),
        visibility var(--transition-normal);
}

.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
}

.lightbox-caption {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--text-inverted);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    font-size: 2rem;
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(0, 0, 0, 0.7);
}

.lightbox-close {
    top: var(--spacing-md);
    right: var(--spacing-md);
}

.lightbox-prev {
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
    .posts-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        order: -1;
    }

    .featured-post .post-card {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .site-nav {
        flex-direction: column;
    }

    .site-nav.open {
        display: flex;
    }

    .nav-dropdown {
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        padding-left: var(--spacing-md);
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
    }

    .nav-dropdown.open .dropdown-menu {
        display: block;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .post-title {
        font-size: var(--font-size-2xl);
    }

    .post-navigation {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .tags-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .tags-grid {
        grid-template-columns: 1fr;
    }
}

/* Immersive Layout (Full Screen Post) */
.immersive-layout .site-wrapper {
    display: block;
    height: 100vh;
    overflow: hidden;
}

.immersive-layout .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(0, 0, 0, 0.4); /* Default dark for contrast */
    backdrop-filter: blur(4px);
    border-bottom: none;
    color: white;
    transition:
        opacity 0.4s ease,
        transform 0.4s ease;
}

[data-theme="light"].immersive-layout .site-header {
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
}

.immersive-layout .site-header .site-title,
.immersive-layout .site-header .nav-link,
.immersive-layout .site-header .site-subtitle,
.immersive-layout .site-header svg,
.immersive-layout .site-header .theme-toggle {
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

[data-theme="light"].immersive-layout .site-header .site-title,
[data-theme="light"].immersive-layout .site-header .nav-link,
[data-theme="light"].immersive-layout .site-header .site-subtitle,
[data-theme="light"].immersive-layout .site-header svg,
[data-theme="light"].immersive-layout .site-header .theme-toggle {
    color: var(--text-primary);
    border-color: var(--border-primary);
}

.immersive-layout .site-header .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"].immersive-layout .site-header .nav-link:hover {
    background: var(--surface-hover);
}

.immersive-layout .site-main {
    padding: 0;
    height: 100vh;
    width: 100vw;
}

.immersive-layout .main-container {
    max-width: none;
    margin: 0;
    height: 100%;
    padding: 0;
}

.immersive-layout .site-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: rgba(255, 255, 255, 0.8);
    border-top: none;
    padding-bottom: var(--spacing-lg);
    transition:
        opacity 0.4s ease,
        transform 0.4s ease;
}

[data-theme="light"].immersive-layout .site-footer {
    background: linear-gradient(to top, rgba(255, 255, 255, 0.9), transparent);
    color: var(--text-secondary);
}

.immersive-layout .site-footer .footer-link,
.immersive-layout .site-footer .footer-copyright {
    color: rgba(255, 255, 255, 0.8);
}

.immersive-layout .footer-content {
    justify-content: flex-start;
    text-align: left;
    align-items: flex-start;
}

@media (max-width: 768px) {
    .immersive-layout .footer-content {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
}

[data-theme="light"].immersive-layout .site-footer .footer-link,
[data-theme="light"].immersive-layout .site-footer .footer-copyright {
    color: var(--text-secondary);
}

/* Immersive Components */
.immersive-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
}

.immersive-visuals {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-carouselle);
}

.immersive-bg-image {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Show the whole image */
    transition: opacity 0.3s ease;
}

.immersive-tags-wrapper {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 0;
    right: 0;
    z-index: 60;
    pointer-events: none;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.immersive-tags {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.immersive-layout.ui-hidden .immersive-tags-wrapper {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

.immersive-tags .post-tag {
    background: rgba(0, 0, 0, 0.3);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.immersive-tags .post-tag:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

[data-theme="light"].immersive-layout .immersive-tags .post-tag {
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="light"].immersive-layout .immersive-tags .post-tag:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

video.immersive-bg-image {
    margin-bottom: 6em;
}

.immersive-overlay-container {
    position: absolute;
    inset: 0;
    z-index: 20;
    pointer-events: none; /* Allow clicking through to toggle */
    display: flex;
    flex-direction: column;
    justify-content: center; /* Center the info card */
    align-items: center;
    padding: 80px 40px; /* Clear header/footer areas */
    transition:
        opacity 0.4s ease,
        transform 0.4s ease;
    background: rgba(0, 0, 0, 0.3); /* Slight dim to make text readable */
}

.post-info-card {
    pointer-events: auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    width: 100%;
    max-width: 700px;
    max-height: 80vh; /* Leave some space */
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s ease;
    overflow: hidden; /* For inner scroll */
}

[data-theme="dark"] .post-info-card {
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.post-header-compact {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-primary);
    text-align: center;
    flex-shrink: 0;
}

.post-content-scrollable {
    overflow-y: auto;
    padding-right: var(--spacing-sm); /* Avoid scrollbar covering text */
    flex: 1;
    /* Custom scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) transparent;
}

/* Compact Nav */
.post-footer-compact {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
    flex-shrink: 0;
}

.post-navigation-compact {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
}

.post-nav-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.post-nav-icon:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

.post-nav-icon.disabled {
    opacity: 0.3;
    cursor: default;
}

/* UI Hidden State (toggled by JS) */
.immersive-layout.ui-hidden .site-header {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.immersive-layout.ui-hidden .site-footer {
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

.immersive-layout.ui-hidden .immersive-overlay-container {
    opacity: 0;
    transform: scale(0.98);
    pointer-events: none;
}

.immersive-layout.ui-hidden .immersive-visuals {
    cursor: none; /* Hide cursor for better immersion */
}

/* ===========================
   Carousel
   =========================== */
.carousel-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-carouselle);
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.carousel-slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 10;
}

.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.3);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    transition:
        background-color 0.2s ease,
        transform 0.2s ease;
    backdrop-filter: blur(4px);
}

.carousel-prev:hover,
.carousel-next:hover {
    background: rgba(0, 0, 0, 0.6);
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 20;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 12px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition:
        background-color 0.2s ease,
        transform 0.2s ease;
    padding: 0;
}

.carousel-dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.carousel-dot.active {
    background: white;
    transform: scale(1.2);
}

/* Hide carousel controls in UI hidden mode */
.immersive-layout.ui-hidden .carousel-prev,
.immersive-layout.ui-hidden .carousel-next,
.immersive-layout.ui-hidden .carousel-indicators {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}