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

:root {
    /* Vintage color palette */
    --cream: #f5f0e6;
    --cream-dark: #e8e0d0;
    --brown-light: #d4c4a8;
    --brown: #6b5b4f;
    --brown-dark: #4a3f35;
    --rust: #c75d3a;
    --rust-dark: #a64830;
    --teal: #3a7c6a;
    --teal-dark: #2a5a4a;
    --gold: #d4a030;
    --blue-muted: #5a8ac7;
    --purple-muted: #8b5a9a;
    --blue-accent: #4a6b8a;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--cream);
    color: var(--brown-dark);
    line-height: 1.6;
    min-height: 100vh;
}

/* Top decorative bar */
.top-bar {
    height: 12px;
    background: linear-gradient(to right,
        var(--teal) 0%,
        var(--teal) 33%,
        var(--blue-accent) 33%,
        var(--blue-accent) 66%,
        var(--rust) 66%,
        var(--rust) 100%
    );
}

/* Header */
.site-header {
    text-align: center;
    padding: 3rem 1rem 2rem;
    background-color: var(--cream);
}

.site-title {
    font-family: 'Lusitana', Georgia, serif;
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--brown-dark);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.site-subtitle {
    font-size: 1.1rem;
    color: var(--brown);
    font-weight: 400;
    letter-spacing: 0.02em;
}

/* Dividers */
.header-divider,
.footer-divider {
    height: 2px;
    background: linear-gradient(to right,
        transparent 0%,
        var(--brown-light) 15%,
        var(--brown-light) 85%,
        transparent 100%
    );
    margin: 0 auto;
    max-width: 1200px;
}

/* Hero Section */
.hero {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    padding: 3rem 2rem;
    background: linear-gradient(to bottom, var(--cream) 0%, var(--cream-dark) 100%);
    flex-wrap: wrap;
}

.hero-illustration {
    width: 200px;
    height: 200px;
    background-color: var(--cream-dark);
    border-radius: 8px;
    padding: 1rem;
    box-shadow:
        0 4px 6px rgba(74, 63, 53, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.hero-illustration svg {
    width: 100%;
    height: 100%;
}

/* Main Content Wrapper */
.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

@media (max-width: 900px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }
}

/* Blog Posts Grid */
.blog-posts {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Post Card */
.post-card {
    background-color: var(--cream);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(74, 63, 53, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(74, 63, 53, 0.15);
}

.post-image {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-title {
    font-family: 'Lusitana', Georgia, serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--brown-dark);
    padding: 1rem 1rem 0.5rem;
    line-height: 1.3;
}

.post-excerpt {
    font-size: 0.9rem;
    color: var(--brown);
    padding: 0 1rem;
    line-height: 1.5;
}

.read-more {
    display: inline-block;
    padding: 0.75rem 1rem 1rem;
    color: var(--rust);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.read-more:hover {
    color: var(--rust-dark);
    text-decoration: underline;
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-title {
    font-family: 'Lusitana', Georgia, serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--brown-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--brown-light);
}

/* Categories */
.categories {
    background-color: var(--cream);
    padding: 1.5rem;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(74, 63, 53, 0.1);
}

.category-list {
    list-style: none;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--cream-dark);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

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

.category-item:hover {
    background-color: var(--cream-dark);
    margin: 0 -0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    border-radius: 4px;
}

.category-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.category-icon svg {
    width: 18px;
    height: 18px;
}

.ai-icon {
    background-color: #5a7a9a;
    color: white;
}

.tech-icon {
    background-color: var(--teal);
    color: white;
}

.objectivism-icon {
    background-color: var(--gold);
    color: white;
}

.management-icon {
    background-color: var(--rust);
    color: white;
}

.category-item span:last-child {
    font-weight: 600;
    color: var(--brown-dark);
}

/* About Author */
.about-author {
    background-color: var(--cream);
    padding: 1.5rem;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(74, 63, 53, 0.1);
}

.author-photo {
    width: 100%;
    height: auto;
    border-radius: 4px;
    margin-bottom: 1rem;
    display: block;
    box-shadow: 0 2px 8px rgba(74, 63, 53, 0.15);
}

.about-author p {
    font-size: 0.95rem;
    color: var(--brown);
    line-height: 1.6;
}

/* Footer */
.site-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.copyright {
    font-size: 0.9rem;
    color: var(--brown);
}

.footer-nav {
    display: flex;
    gap: 2rem;
}

.footer-nav a {
    color: var(--brown);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: var(--rust);
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .site-header {
        padding: 2rem 1rem 1.5rem;
    }

    .hero {
        gap: 2rem;
        padding: 2rem 1rem;
    }

    .hero-illustration {
        width: 150px;
        height: 150px;
    }

    .content-wrapper {
        padding: 1rem;
    }

    .blog-posts {
        grid-template-columns: 1fr;
    }

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

    .footer-nav {
        gap: 1.5rem;
    }
}

/* Print styles */
@media print {
    .top-bar,
    .hero,
    .sidebar {
        display: none;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .post-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--brown-light);
    }
}

/* Subtle texture overlay for vintage feel */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.015;
    z-index: 9999;
}

/* Article Page Styles */
.site-title-link {
    text-decoration: none;
    color: inherit;
}

.site-title-link:hover .site-title {
    color: var(--rust);
}

.article-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.article-content {
    background-color: var(--cream);
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(74, 63, 53, 0.1);
    padding: 2rem;
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--brown-light);
}

.article-title {
    font-family: 'Lusitana', Georgia, serif;
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 700;
    color: var(--brown-dark);
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

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

.article-subtitle {
    font-size: 1.1rem;
    color: var(--brown);
    margin-bottom: 1.5rem;
}

.article-body {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--brown-dark);
}

.article-body h2 {
    font-family: 'Lusitana', Georgia, serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--brown-dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.article-body h3 {
    font-family: 'Lusitana', Georgia, serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--brown-dark);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.article-body p {
    margin-bottom: 1rem;
}

.article-body ul,
.article-body ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

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

.article-body pre {
    background-color: var(--cream-dark);
    border: 1px solid var(--brown-light);
    border-radius: 4px;
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.article-body code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    background-color: var(--cream-dark);
    padding: 0.1rem 0.3rem;
    border-radius: 2px;
}

.article-body pre code {
    background: none;
    padding: 0;
}

.article-body strong {
    color: var(--brown-dark);
    font-weight: 600;
}

.article-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--brown-light);
}

.back-link {
    color: var(--rust);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.back-link:hover {
    color: var(--rust-dark);
    text-decoration: underline;
}

@media (max-width: 600px) {
    .article-wrapper {
        padding: 1rem;
    }

    .article-content {
        padding: 1.5rem;
    }

    .article-body {
        font-size: 1rem;
    }
}