/* Component Reason Blog - Matching Main Site Theme */
/* Color Palette: Stone, Sage, Sand with Deep Green accent */

@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Source+Sans+3:wght@300;400;500;600&display=swap');

:root {
    --color-background: #F7F5F0;
    --color-surface: #FFFFFF;
    --color-surface-alt: #EDE9E0;
    --color-text-primary: #2C3E2D;
    --color-text-secondary: #5A6B5C;
    --color-text-light: #5F6E61;
    --color-accent: #3D5A40;
    --color-accent-hover: #2C4330;
    --color-accent-warm: #A67C52;
    --color-border: #D4CFC4;
    
    --font-serif: 'Libre Baskerville', Georgia, serif;
    --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --max-width: 1100px;
    --content-width: 750px;
    --border-radius: 4px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-background);
}

h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.3;
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; margin-bottom: var(--spacing-md); }
h3 { font-size: 1.35rem; margin-bottom: var(--spacing-xs); }

p { margin-bottom: var(--spacing-sm); }

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

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

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

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-surface);
    padding: 8px 16px;
    z-index: 1000;
    text-decoration: none;
    border-radius: 0 0 4px 0;
    transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* Focus Indicators */
*:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}
*:focus:not(:focus-visible) { outline: none; }
*:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Site Header (top navigation) */
body > header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(247, 245, 240, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

body > header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    color: var(--color-text-primary);
    text-decoration: none;
}

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

nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.2s ease;
}

nav a:hover { color: var(--color-text-primary); }
nav a:hover::after { width: 100%; }
nav a.active { color: var(--color-text-primary); }
nav a.active::after { width: 100%; }

/* Main Content Area */
main {
    padding-top: calc(80px + var(--spacing-lg));
    padding-bottom: var(--spacing-xl);
    min-height: 100vh;
}

/* Blog List Page */
.blog-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: var(--content-width);
    margin-left: auto;
    margin-right: auto;
}

.blog-header h1 {
    margin-bottom: var(--spacing-sm);
}

.blog-header .subtitle {
    font-size: 1.35rem;
    color: var(--color-text-secondary);
    font-weight: 300;
    line-height: 1.6;
}

.blog-list {
    max-width: var(--content-width);
    margin: 0 auto;
}

/* Article Card */
.article-card {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(44, 62, 45, 0.08);
}

.article-card h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
}

.article-card h2 a {
    color: var(--color-text-primary);
}

.article-card h2 a:hover {
    color: var(--color-accent);
}

.article-meta {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.article-meta .component-tag {
    display: inline-block;
    background-color: var(--color-surface-alt);
    color: var(--color-accent);
    padding: 2px 10px;
    border-radius: 3px;
    font-size: 0.9rem;
    margin-left: var(--spacing-xs);
}

.article-excerpt {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    margin-bottom: var(--spacing-sm);
}

.read-more {
    font-weight: 500;
    color: var(--color-accent);
}

.read-more:hover {
    color: var(--color-accent-hover);
}

/* Single Article Page */
.article-single {
    max-width: var(--content-width);
    margin: 0 auto;
}

.article-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.article-header h1 {
    margin-bottom: var(--spacing-sm);
    font-size: 3rem;
}

.article-header .subtitle {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.25rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.article-header .meta {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* Article Content - Prose Styling */
.article-content {
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content h2 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.article-content h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.article-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

.article-content ul, .article-content ol {
    margin-bottom: 1.5rem;
    padding-left: var(--spacing-md);
}

.article-content li {
    margin-bottom: 0.5rem;
}

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

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

.article-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--spacing-lg) 0;
}

/* Takeaway Box - For Framework Connection */
.takeaway-box {
    background-color: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg) 0;
}

.takeaway-box h4 {
    font-family: var(--font-serif);
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.takeaway-box p:last-child {
    margin-bottom: 0;
}

/* Article Footer */
.article-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.article-tags {
    margin-bottom: var(--spacing-md);
}

.article-tags span {
    font-weight: 500;
    color: var(--color-text-primary);
    margin-right: var(--spacing-xs);
}

.tag {
    display: inline-block;
    background-color: var(--color-surface-alt);
    color: var(--color-text-secondary);
    padding: 4px 12px;
    border-radius: 3px;
    font-size: 0.85rem;
    margin-right: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

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

/* Navigation between posts */
.post-nav {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.post-nav a {
    flex: 1;
    padding: var(--spacing-sm);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: border-color 0.2s ease;
}

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

.post-nav .label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    display: block;
}

.post-nav .title {
    font-weight: 500;
    color: var(--color-text-primary);
}

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

/* Footer */
footer {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-text-primary);
    color: var(--color-background);
}

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

.footer-text p {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
    margin-bottom: 0;
    opacity: 0.9;
}

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

.footer-links a {
    color: var(--color-background);
    opacity: 0.8;
    font-size: 0.95rem;
    transition: opacity 0.2s ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--color-background);
}

.footer-copyright p {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-bottom: 0;
}

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

.pagination a, .pagination span {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
}

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

.pagination .current {
    background-color: var(--color-accent);
    color: var(--color-surface);
    border-color: var(--color-accent);
}

/* Responsive */
@media (max-width: 768px) {
    body { font-size: 16px; }
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.65rem; }
    
    header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    nav ul { gap: var(--spacing-sm); }
    
    main { padding-top: calc(100px + var(--spacing-md)); }
    
    .article-header h1 { font-size: 2.5rem; }
    
    .post-nav {
        flex-direction: column;
    }
    
    .post-nav .next { text-align: left; }
}

@media (max-width: 480px) {
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .article-header h1 { font-size: 2rem; }
}

/* Utility Classes */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.text-center { text-align: center; }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Foundations Section - Start Here */
.foundations-section {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.foundations-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.foundations-header h2 {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-accent);
}

.foundations-header p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.foundations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

.foundation-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm);
    background-color: var(--color-surface-alt);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.foundation-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 62, 45, 0.1);
}

.foundation-component {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.foundation-title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.foundation-subtitle {
    font-style: italic;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Component Filter */
.component-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.filter-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.filter-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.filter-link {
    font-size: 0.85rem;
    padding: 4px 12px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
}

.filter-link::after {
    display: none;
}

.filter-link:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background-color: var(--color-surface);
    text-decoration: none;
}

.filter-link.active {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-surface);
}

/* Recent Posts Section */
.recent-posts {
    max-width: var(--content-width);
    margin: 0 auto;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.no-posts {
    text-align: center;
    color: var(--color-text-secondary);
    font-style: italic;
    padding: var(--spacing-lg) 0;
}

/* Foundation Badge */
.foundation-badge {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-surface);
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-left: var(--spacing-xs);
}

/* Responsive additions */
@media (max-width: 768px) {
    .foundations-grid {
        grid-template-columns: 1fr;
    }
    
    .component-filter {
        flex-direction: column;
        align-items: flex-start;
    }
}