/* Modern Blog Theme CSS */

:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1e1e1e;
    --bg-hover: #252525;
    
    --text-primary: #f5f5f5;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: rgba(59, 130, 246, 0.1);
    
    --border: #2a2a2a;
    --border-light: #1a1a1a;
    
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: var(--text-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: rgba(20, 20, 20, 0.7);
    border-bottom: 1px solid rgba(42, 42, 42, 0.5);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.logo {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-base);
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo:hover {
    opacity: 0.9;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--text-xl);
    cursor: pointer;
    padding: var(--spacing-xs);
}

/* Main Content */
.main-content {
    flex: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

/* Home Page */
.hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-2xl);
}

.posts-section {
    margin-top: var(--spacing-2xl);
}

.posts-section h2 {
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
    word-wrap: break-word;
}

.hero h1 {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero p,
.hero-content p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 800px;
    margin: var(--spacing-md) auto;
    line-height: 1.8;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    text-align: center;
}

.hero-content blockquote {
    border-left: 4px solid var(--accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-tertiary);
    font-style: italic;
    font-size: var(--text-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-content ul {
    list-style: none;
    padding-left: 0;
    margin: var(--spacing-lg) auto;
    max-width: 600px;
}

.hero-content li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.hero-content li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.hero-quote {
    margin-top: var(--spacing-lg);
    font-style: italic;
    color: var(--text-tertiary);
    font-size: var(--text-base);
}

/* Post Cards Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.post-card {
    background: rgba(30, 30, 30, 0.6);
    border: 1px solid rgba(42, 42, 42, 0.5);
    border-radius: 16px;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    text-decoration: none;
    display: block;
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.post-card:hover {
    transform: translateY(-6px);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 12px 30px rgba(59, 130, 246, 0.2), 0 4px 15px rgba(0, 0, 0, 0.3);
    background: rgba(30, 30, 30, 0.8);
}

.post-card:hover::before {
    transform: scaleX(1);
}

.post-card-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

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

.post-card-meta svg {
    flex-shrink: 0;
    opacity: 0.8;
}

.post-card-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.post-card-tags > svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 6px;
    font-size: var(--text-xs);
    font-weight: 500;
}

.post-card-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: var(--spacing-sm);
}

/* Single Post */
.post-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.post-title {
    font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

.post-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

.post-content h2 {
    font-size: var(--text-3xl);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border);
}

.post-content h3 {
    font-size: var(--text-2xl);
}

.post-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--text-secondary);
}

.post-content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base);
}

.post-content a:hover {
    border-bottom-color: var(--accent);
}

.post-content ul,
.post-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
}

.post-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    color: var(--accent);
}

.post-content pre {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.post-content pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
    font-size: var(--text-sm);
}

.post-content blockquote {
    border-left: 4px solid var(--accent);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    color: var(--text-secondary);
    font-style: italic;
    background: rgba(59, 130, 246, 0.08);
    border-radius: 0 8px 8px 0;
    position: relative;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.post-content blockquote::before {
    content: '"';
    font-size: 4rem;
    line-height: 1;
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-sm);
    color: var(--accent);
    opacity: 0.2;
    font-family: Georgia, serif;
}

.hero blockquote,
.hero-content blockquote {
    border-left: 4px solid var(--accent);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-lg) auto;
    max-width: 700px;
    color: var(--text-secondary);
    font-style: italic;
    background: rgba(59, 130, 246, 0.08);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    text-align: left;
}

.hero blockquote::before,
.hero-content blockquote::before {
    content: '"';
    font-size: 3rem;
    line-height: 1;
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-xs);
    color: var(--accent);
    opacity: 0.3;
    font-family: Georgia, serif;
}

.hero blockquote p:last-child,
.hero-content blockquote p:last-child {
    text-align: right;
    margin-top: var(--spacing-sm);
    margin-bottom: 0;
    font-size: 0.9em;
    opacity: 0.8;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-md);
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
}

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

.post-content th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-base);
}

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

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        padding: var(--spacing-sm);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg);
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .main-content {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .post-title {
        font-size: var(--text-2xl);
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.post-card {
    animation: fadeIn 0.6s ease-out;
}

.post-card:nth-child(1) { animation-delay: 0.1s; }
.post-card:nth-child(2) { animation-delay: 0.2s; }
.post-card:nth-child(3) { animation-delay: 0.3s; }
.post-card:nth-child(4) { animation-delay: 0.4s; }
.post-card:nth-child(5) { animation-delay: 0.5s; }
.post-card:nth-child(6) { animation-delay: 0.6s; }

/* Smooth scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border);
}

/* Comments Section */
.comments-section {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.talkyard-comments {
    color: var(--text-secondary);
}

.talkyard-comments a {
    color: var(--accent);
    text-decoration: none;
}

.talkyard-comments a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Image hover effect */
.image-container img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Hint shortcode styles */
.hint {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    border-radius: 8px;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.hint:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.term-card:hover,
.page-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

/* Print styles */
@media print {
    .header,
    .footer,
    .mobile-menu-toggle,
    .nav {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: rgba(59, 130, 246, 0.9);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: rgba(37, 99, 235, 0.95);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
}

/* Nav icons styling */
.nav-links svg,
.logo svg {
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.nav-links a:hover svg,
.nav-links a.active svg {
    transform: scale(1.1);
}

.logo:hover svg {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top svg {
        width: 18px;
        height: 18px;
    }
}