/* ===== Premium Design System - Inspired by Apple & Google ===== */

/* Google Fonts - Inter for modern, clean typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Premium Color Palette */
    --color-bg: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;

    --color-surface: #ffffff;
    --color-surface-elevated: #ffffff;

    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-tertiary: #94a3b8;

    /* Accent - Refined Blue */
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #dbeafe;
    --color-accent-subtle: #eff6ff;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* Borders & Dividers */
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-divider: #e2e8f0;

    /* Shadows - Layered depth */
    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.03);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

    /* Font Sizes - Fluid Scale */
    --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: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Spacing - 4px base */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;

    /* Layout */
    --max-width: 1280px;
    --max-width-content: 720px;
    --header-height: 72px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-weight: 400;
    overflow-x: hidden;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

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

::selection {
    background: var(--color-accent-light);
    color: var(--color-accent-hover);
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
    transition: all var(--duration-normal) var(--ease-out);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo h1 {
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
    transition: color var(--duration-fast) var(--ease-out);
}

.logo a:hover h1 {
    color: var(--color-accent);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-2);
}

.main-nav a {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--duration-fast) var(--ease-out);
}

.main-nav a:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
}

.main-nav a.active {
    color: var(--color-accent);
    background: var(--color-accent-subtle);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-out);
}

.mobile-menu-toggle:hover {
    background: var(--color-bg-tertiary);
}

.mobile-menu-toggle span {
    width: 18px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 1px;
    margin: 2px 0;
    transition: all var(--duration-fast) var(--ease-out);
}

/* ===== Main Content ===== */
main {
    padding-top: var(--header-height);
    min-height: 100vh;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: 1;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    border-color: var(--color-text-tertiary);
    background: var(--color-bg-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: white;
    box-shadow: var(--shadow-md), 0 0 0 3px var(--color-accent-light);
}

.btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

/* ===== Homepage ===== */
.home {
    padding-bottom: var(--space-24);
}

/* Hero Section */
.hero {
    padding: var(--space-24) 0 var(--space-20);
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1000px;
    height: 600px;
    background: radial-gradient(ellipse at center, var(--color-accent-subtle) 0%, transparent 70%);
    opacity: 0.6;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 540px;
    margin: 0 auto var(--space-10);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-title {
    font-size: var(--text-3xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.section-subtitle {
    font-size: var(--text-base);
    color: var(--color-text-tertiary);
}

/* Latest News & Posts */
.latest-news,
.latest-posts {
    padding: var(--space-20) 0;
}

.latest-news {
    background: var(--color-bg);
}

.latest-posts {
    background: var(--color-bg-secondary);
}

.latest-news h2,
.latest-posts h2 {
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    text-align: center;
    color: var(--color-text-primary);
    margin-bottom: var(--space-12);
}

/* Simple List Style */
.posts-simple-list {
    max-width: 680px;
    margin: 0 auto;
}

.post-simple-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-6);
    padding: var(--space-5) 0;
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--duration-fast) var(--ease-out);
}

.post-simple-item:first-child {
    border-top: 1px solid var(--color-border-light);
}

.post-simple-item:hover {
    background: linear-gradient(90deg, transparent, var(--color-accent-subtle), transparent);
    padding-left: var(--space-4);
    margin-left: calc(-1 * var(--space-4));
    padding-right: var(--space-4);
    margin-right: calc(-1 * var(--space-4));
}

.post-date {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    min-width: 90px;
    flex-shrink: 0;
}

.post-title {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-text-primary);
    line-height: 1.5;
    margin: 0;
}

.post-title a {
    color: inherit;
    transition: color var(--duration-fast) var(--ease-out);
}

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

.view-all {
    text-align: center;
    margin-top: var(--space-10);
}

/* ===== Blog & News List Pages ===== */
.blog-list-page,
.news-list-page,
.list-page {
    padding: var(--space-16) 0 var(--space-24);
}

.page-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.page-header h1 {
    font-size: var(--text-4xl);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
}

/* Content Wrapper with Sidebar */
.blog-content-wrapper,
.news-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-12);
    align-items: start;
}

.blog-main,
.news-main {
    min-width: 0;
}

/* Post Cards in List */
.posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.post-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--duration-normal) var(--ease-out);
}

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

.post-item h2 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
    line-height: 1.4;
}

.post-item h2 a {
    color: inherit;
    transition: color var(--duration-fast) var(--ease-out);
}

.post-item h2 a:hover {
    color: var(--color-accent);
}

/* Post Meta */
.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.post-meta time {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.category,
.tag {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 500;
    font-family: var(--font-mono);
    transition: all var(--duration-fast) var(--ease-out);
}

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

.post-summary {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-accent);
}

.read-more:hover {
    gap: var(--space-3);
}

.read-more::after {
    content: '→';
    transition: transform var(--duration-fast) var(--ease-out);
}

.read-more:hover::after {
    transform: translateX(4px);
}

/* ===== Sidebar ===== */
.blog-sidebar,
.news-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-8));
}

.sidebar-widget {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
}

.widget-title {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

/* Recent Posts Widget */
.recent-posts {
    list-style: none;
}

.recent-posts li {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.recent-posts li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.recent-posts li:first-child {
    padding-top: 0;
}

.recent-posts a {
    display: block;
    color: var(--color-text-primary);
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: 1.5;
    transition: color var(--duration-fast) var(--ease-out);
}

.recent-posts a:hover,
.recent-posts a.current {
    color: var(--color-accent);
}

.recent-posts time {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--space-1);
}

/* Tag Cloud */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag-link {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-3);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--duration-fast) var(--ease-out);
}

.tag-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
    transform: translateY(-1px);
}

.tag-count {
    margin-left: var(--space-1);
    opacity: 0.6;
    font-size: var(--text-xs);
}

/* Category List */
.category-list {
    list-style: none;
}

.category-list li {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.category-list li:last-child {
    border-bottom: none;
}

.category-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-primary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: color var(--duration-fast) var(--ease-out);
}

.category-list a:hover {
    color: var(--color-accent);
}

.category-list .count {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    background: var(--color-bg-tertiary);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

/* Tags in post meta */
.post-meta .tags a.tag {
    color: var(--color-accent);
    text-decoration: none;
}

/* ===== Single Post / Article ===== */
.blog-single-page,
.news-single-page,
.single-post {
    padding: var(--space-16) 0 var(--space-24);
}

.post-header {
    text-align: center;
    max-width: var(--max-width-content);
    margin: 0 auto var(--space-12);
}

.post-header h1 {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
}

.post-header .post-meta {
    justify-content: center;
}

/* Post Content */
.post-content {
    max-width: var(--max-width-content);
    margin: 0 auto;
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.post-content > * + * {
    margin-top: var(--space-6);
}

.post-content h2 {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--space-12);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.post-content h3 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--space-10);
    margin-bottom: var(--space-4);
}

.post-content p {
    margin-bottom: var(--space-6);
}

.post-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-color: var(--color-accent-light);
    text-underline-offset: 3px;
    transition: text-decoration-color var(--duration-fast) var(--ease-out);
}

.post-content a:hover {
    text-decoration-color: var(--color-accent);
}

.post-content ul,
.post-content ol {
    padding-left: var(--space-6);
    margin-bottom: var(--space-6);
}

.post-content li {
    margin-bottom: var(--space-3);
    padding-left: var(--space-2);
}

.post-content li::marker {
    color: var(--color-accent);
}

.post-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding: var(--space-4) var(--space-6);
    margin: var(--space-8) 0;
    background: var(--color-bg-secondary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.post-content pre {
    background: var(--color-text-primary);
    color: #e2e8f0;
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: var(--space-8) 0;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.7;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

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

.post-content img {
    border-radius: var(--radius-lg);
    margin: var(--space-8) 0;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-8) 0;
    font-size: var(--text-base);
}

.post-content th,
.post-content td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.post-content th {
    font-weight: 600;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
}

/* Post Navigation */
.post-navigation {
    max-width: var(--max-width-content);
    margin: var(--space-16) auto 0;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border-light);
}

.post-nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-accent);
    font-weight: 500;
}

.back-to-list {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--duration-fast) var(--ease-out);
}

.back-to-list:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

/* ===== Products / Projects Page ===== */
.page-hero {
    padding: var(--space-20) 0 var(--space-16);
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.page-hero h1 {
    font-size: var(--text-4xl);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
}

.products-overview {
    padding-bottom: var(--space-24);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: var(--space-8);
    padding: var(--space-8) 0;
}

.product-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), #8b5cf6);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-normal) var(--ease-out);
}

.product-card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

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

.product-category {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-3);
}

.product-content h2 {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.product-summary {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.product-features {
    list-style: none;
    margin-bottom: var(--space-6);
}

.product-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.product-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-accent);
    font-weight: 500;
    font-size: var(--text-sm);
}

.product-link:hover {
    gap: var(--space-3);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-light);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-16);
    padding: var(--space-16) 0;
}

.footer-section h3,
.footer-section h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.footer-section .logo h1 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-4);
}

.footer-section p {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-3);
}

.footer-section a {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    transition: color var(--duration-fast) var(--ease-out);
}

.footer-section a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid var(--color-border-light);
    padding: var(--space-6) 0;
    text-align: center;
}

.footer-bottom p {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .blog-content-wrapper,
    .news-content-wrapper {
        grid-template-columns: 1fr;
    }

    .blog-sidebar,
    .news-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--space-6);
        margin-top: var(--space-12);
        padding-top: var(--space-12);
        border-top: 1px solid var(--color-border-light);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-10);
    }
}

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

    .main-nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        padding: var(--space-16) 0 var(--space-12);
    }

    .hero h1 {
        font-size: var(--text-4xl);
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }

    .latest-news,
    .latest-posts {
        padding: var(--space-12) 0;
    }

    .post-simple-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .page-header h1 {
        font-size: var(--text-3xl);
    }

    .post-header h1 {
        font-size: var(--text-2xl);
    }

    .post-content {
        font-size: var(--text-base);
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }

    .footer-section ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-4);
    }

    .footer-section ul li {
        margin-bottom: 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

    .post-item {
        padding: var(--space-6);
    }

    .product-card {
        padding: var(--space-6);
    }

    .sidebar-widget {
        padding: var(--space-5);
    }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.post-item,
.product-card {
    animation: fadeInUp var(--duration-slow) var(--ease-out) forwards;
    opacity: 0;
}

.post-item:nth-child(1) { animation-delay: 0ms; }
.post-item:nth-child(2) { animation-delay: 100ms; }
.post-item:nth-child(3) { animation-delay: 200ms; }
.post-item:nth-child(4) { animation-delay: 300ms; }

.product-card:nth-child(1) { animation-delay: 0ms; }
.product-card:nth-child(2) { animation-delay: 150ms; }
.product-card:nth-child(3) { animation-delay: 300ms; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== Print Styles ===== */
@media print {
    .site-header,
    .site-footer,
    .blog-sidebar,
    .news-sidebar {
        display: none;
    }

    main {
        padding-top: 0;
    }

    .post-content {
        max-width: 100%;
    }
}