/* ==========================================================================
   Eabha Genomics Blog Theme
   Matching eabhaseq.com design system
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables - Design System
   -------------------------------------------------------------------------- */
:root {
    /* Typography */
    --font-display: "Cormorant Garamond", Georgia, serif;
    --font-body: "Source Serif 4", Georgia, serif;
    --font-mono: "IBM Plex Mono", "SF Mono", Consolas, monospace;
    
    /* Font sizes */
    --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;
    
    /* Colors */
    --color-bg-primary: #FCFBF9;
    --color-bg-secondary: #F7F5F2;
    --color-bg-dark: #2A2622;
    --color-text-primary: #2A2622;
    --color-text-secondary: #4A4640;
    --color-text-tertiary: #7A756D;
    --color-text-inverse: #FCFBF9;
    --color-accent: #C4654A;
    --color-accent-dark: #9A4936;
    --color-sage: #7D9B8A;
    --color-border: #E5E2DB;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Layout */
    --container-max: 1200px;
    --content-max: 720px;
    
    /* Effects */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --radius-sm: 2px;
    --radius-md: 4px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text-primary);
}

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

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

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

/* --------------------------------------------------------------------------
   Site Header with Navigation Back to Main Site
   -------------------------------------------------------------------------- */
.gh-head {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) 0;
}

.gh-head-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gh-head-brand {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.gh-head-logo {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-text-primary);
    text-decoration: none;
}

.gh-head-logo .logo-accent {
    color: var(--color-accent);
}

/* Back to main site link */
.gh-head-back {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.gh-head-back:hover {
    color: var(--color-accent);
}

.gh-head-back svg {
    width: 16px;
    height: 16px;
}

.gh-head-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.gh-head-menu a {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.gh-head-menu a:hover {
    color: var(--color-text-primary);
}

/* CTA Button */
.gh-head-cta {
    display: inline-flex;
    align-items: center;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-accent);
    color: #fff !important;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.gh-head-cta:hover {
    background: var(--color-accent-dark);
    color: #fff !important;
}

/* --------------------------------------------------------------------------
   Main Content Area
   -------------------------------------------------------------------------- */
.gh-main {
    min-height: calc(100vh - 200px);
}

.gh-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --------------------------------------------------------------------------
   Homepage / Post Feed - Centered list layout
   -------------------------------------------------------------------------- */
.gh-feed {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
    padding: var(--space-3xl) 0;
    max-width: 800px;
    margin: 0 auto;
}

.gh-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-xl);
    align-items: start;
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
}

/* When no image, make content full width and centered */
.gh-card:not(:has(.gh-card-image)) {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.gh-card:not(:has(.gh-card-image)) .gh-card-meta {
    justify-content: center;
}

.gh-card:not(:has(.gh-card-image)) .gh-card-footer {
    justify-content: center;
}

.gh-card:last-child {
    border-bottom: none;
}

.gh-card-image {
    display: block;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--color-bg-secondary);
}

.gh-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.gh-card:hover .gh-card-image img {
    transform: scale(1.02);
}

/* Generic post-card image support (tag/author templates) */
.post-card-image-link {
    display: block;
    width: 100%;
    overflow: hidden;
    background: var(--color-bg-secondary);
}

.post-card-image {
    width: 100%;
    height: auto;
    display: block;
}

.gh-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.gh-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
}

.gh-card-tag {
    color: var(--color-accent);
}

.gh-card-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 500;
    line-height: 1.3;
}

.gh-card-title a {
    color: var(--color-text-primary);
    text-decoration: none;
}

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

.gh-card-excerpt {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.gh-card-footer {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: auto;
    padding-top: var(--space-md);
}

.gh-card-readmore {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-accent);
}

.gh-card-readmore svg {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
}

.gh-card-readmore:hover svg {
    transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   Single Post
   -------------------------------------------------------------------------- */
.gh-article {
    padding: var(--space-3xl) 0;
}

.gh-article-header {
    max-width: var(--content-max);
    margin: 0 auto var(--space-2xl);
    text-align: center;
}

.gh-article-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.gh-article-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.gh-article-excerpt {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.gh-article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
}

/* Hide author info */
.gh-article-author,
.gh-author-card,
.post-card-byline,
.byline,
.author {
    display: none !important;
}

.gh-article-image {
    max-width: 1000px;
    margin: var(--space-2xl) auto;
}

.gh-article-image img {
    width: 100%;
}

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

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

.gh-content h2 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.gh-content h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
}

.gh-content p {
    margin-bottom: var(--space-md);
}

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

.gh-content a:hover {
    color: var(--color-accent-dark);
}

.gh-content strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.gh-content em {
    font-style: italic;
}

.gh-content ul, .gh-content ol {
    padding-left: var(--space-lg);
    margin: var(--space-md) 0;
}

.gh-content li {
    margin-bottom: var(--space-xs);
}

.gh-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-lg);
    margin: var(--space-xl) 0;
    font-style: italic;
    color: var(--color-text-tertiary);
}

.gh-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.gh-content pre {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: var(--space-lg);
    overflow-x: auto;
    border-radius: var(--radius-md);
    margin: var(--space-xl) 0;
}

.gh-content pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

.gh-content img {
    margin: var(--space-xl) 0;
}

.gh-content figcaption {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-align: center;
    margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.gh-foot {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.gh-foot-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.gh-foot-content {
    display: grid;
    grid-template-columns: 1.2fr 2.8fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.gh-foot-brand {
    max-width: 280px;
}

.gh-foot-logo {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-text-primary);
    text-decoration: none;
    display: inline-block;
    margin-bottom: var(--space-md);
}

.gh-foot-logo .logo-accent {
    color: var(--color-accent);
}

.gh-foot-tagline {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

.gh-foot-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.gh-foot-column h4 {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.gh-foot-column a {
    display: block;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

.gh-foot-column a:hover {
    color: var(--color-accent);
}

.gh-foot-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gh-foot-copyright {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   Pagination
   -------------------------------------------------------------------------- */
.gh-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-2xl) 0;
}

.gh-pagination a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .gh-foot-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .gh-head-inner {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
    
    .gh-head-menu {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--space-md);
    }
    
    .gh-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .gh-card .gh-card-meta {
        justify-content: center;
    }
    
    .gh-card .gh-card-footer {
        justify-content: center;
    }
    
    .gh-foot-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .gh-foot-links {
        grid-template-columns: 1fr 1fr;
    }
    
    .gh-foot-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

/* --------------------------------------------------------------------------
   Hide Ghost Branding Elements
   -------------------------------------------------------------------------- */
.gh-powered-by,
.gh-subscribe-form,
.subscribe-form {
    display: none !important;
}