@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a25;
    --color-accent-primary: #00d4aa;
    --color-accent-secondary: #7c3aed;
    --color-accent-highlight: #f59e0b;
    --color-text-primary: #f4f4f5;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-border: #27272a;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --container-width: 1400px;
    --header-height: 70px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: #00e6b8;
}

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

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    z-index: 10000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-md);
}

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

.site-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* ==================== HEADER ==================== */

.site-header {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    height: var(--header-height);
    display: flex;
    align-items: center;
}

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

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

.site-branding .custom-logo-link img {
    max-height: 40px;
    width: auto;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.site-description {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0;
}

.main-navigation {
    display: flex;
    align-items: center;
}

#primary-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

#primary-menu li {
    position: relative;
}

#primary-menu .menu-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: var(--spacing-sm) 0;
    display: block;
    transition: color var(--transition-fast);
}

#primary-menu .menu-link:hover {
    color: var(--color-accent-primary);
}

#primary-menu .menu-item-has-children > .menu-link::after {
    content: '';
    display: inline-block;
    margin-left: 6px;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    vertical-align: middle;
}

#primary-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    list-style: none;
}

#primary-menu .menu-item-has-children:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#primary-menu .sub-menu li {
    margin: 0;
}

#primary-menu .sub-menu .menu-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
}

#primary-menu .sub-menu .menu-link:hover {
    background: var(--color-bg-secondary);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.menu-toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    position: relative;
    transition: background var(--transition-fast);
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    left: 0;
    transition: all var(--transition-fast);
}

.menu-toggle-icon::before {
    top: -8px;
}

.menu-toggle-icon::after {
    bottom: -8px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-toggle {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.search-toggle:hover {
    color: var(--color-accent-primary);
}

/* ==================== FOOTER ==================== */

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

.footer-inner {
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.footer-widgets .widget {
    background: none;
    border: none;
    padding: 0;
}

.footer-widgets .widget-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.footer-widget-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin: 0;
}

#footer-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

#footer-menu .menu-link {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

#footer-menu .menu-link:hover {
    color: var(--color-accent-primary);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-tertiary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--color-text-primary);
    background: var(--color-accent-primary);
}

/* ==================== POSTS ==================== */

.featured-post {
    margin-bottom: var(--spacing-2xl);
}

.post-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.post-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-4px);
}

.post-card .post-thumbnail {
    display: block;
    overflow: hidden;
}

.post-card .post-thumbnail img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-thumbnail img {
    transform: scale(1.05);
}

.post-card.featured .post-thumbnail img {
    height: 400px;
}

.post-card .post-content {
    padding: var(--spacing-lg);
}

.post-card.featured .post-content {
    padding: var(--spacing-xl);
}

.post-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.post-category a {
    color: var(--category-color, var(--color-accent-primary));
}

.post-card .post-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.post-card.featured .post-title {
    font-size: 1.75rem;
}

.post-excerpt {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.posts-grid {
    margin-bottom: var(--spacing-2xl);
}

.posts-grid-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* ==================== SINGLE POST ==================== */

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

.single-post .post-header-inner {
    max-width: 800px;
    margin: 0 auto;
}

.single-post .post-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin: var(--spacing-md) 0;
    line-height: 1.2;
}

.single-post .featured-image {
    margin: var(--spacing-xl) 0;
}

.single-post .featured-image img {
    border-radius: var(--radius-lg);
    width: 100%;
}

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

.single-post .post-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.single-post .post-content h2 {
    font-size: 1.75rem;
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
}

.single-post .post-content h3 {
    font-size: 1.375rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.single-post .post-tags {
    max-width: 800px;
    margin: var(--spacing-xl) auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.tag-link {
    display: inline-block;
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-right: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-fast);
}

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

.single-post .post-share {
    max-width: 800px;
    margin: var(--spacing-xl) auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.share-label {
    font-weight: 600;
    color: var(--color-text-secondary);
}

.share-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.share-link:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

.author-box {
    max-width: 800px;
    margin: var(--spacing-2xl) auto;
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    gap: var(--spacing-lg);
}

.author-avatar img {
    border-radius: 50%;
    width: 80px;
    height: 80px;
}

.author-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.author-bio {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
}

.related-posts {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xl);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* ==================== ARCHIVE ==================== */

.archive-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.archive-title {
    font-size: 2rem;
    font-weight: 800;
}

.archive-description {
    color: var(--color-text-secondary);
    margin-top: var(--spacing-md);
}

/* ==================== PAGINATION ==================== */

.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.pagination-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-sm);
}

.pagination-item a,
.pagination-item span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.pagination-item a:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.pagination-item.active span {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 1024px) {
    .posts-grid-inner,
    .related-posts-grid,
    .footer-widgets {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    html {
        font-size: 14px;
    }

    .menu-toggle {
        display: block;
    }

    #primary-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    #primary-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    #primary-menu li {
        width: 100%;
    }

    #primary-menu .menu-link {
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
    }

    .posts-grid-inner,
    .related-posts-grid,
    .footer-widgets {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    #footer-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .single-post .post-title {
        font-size: 1.75rem;
    }

    .post-card.featured .post-title {
        font-size: 1.5rem;
    }

    .author-box {
        flex-direction: column;
        text-align: center;
    }

    .author-avatar {
        display: flex;
        justify-content: center;
    }
}