/* ============================================
   Modern Blog Theme - Inspired by Notion, Rise Science, Mark Manson
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-text: #1a1a1a;
    --color-text-light: #666;
    --color-background: #ffffff;
    --color-background-alt: #f8f9fa;
    --color-border: #e5e5e5;
    --color-accent: #f26822;
    --color-accent-hover: #d95a1a;

    /* Typography */
    --font-sans: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'DM Sans', 'Poppins', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;

    /* Layout */
    --container-width: 1200px;
    --container-narrow: 740px;
    --border-radius: 8px;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-text: #e5e5e5;
        --color-text-light: #a0a0a0;
        --color-background: #1a1a1a;
        --color-background-alt: #252525;
        --color-border: #333;
    }
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-background);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

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

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

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

/* ============================================
   Layout Containers
   ============================================ */

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

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

/* ============================================
   Header & Navigation
   ============================================ */

.site-header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

@media (prefers-color-scheme: dark) {
    .site-header {
        background-color: rgba(26, 26, 26, 0.9);
    }
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
}

.logo {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-light);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-text);
}

@media (max-width: 768px) {
    .nav-links {
        gap: var(--space-md);
    }

    .nav-link {
        font-size: 0.9rem;
    }
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    text-align: center;
    padding: var(--space-2xl) 0 var(--space-xl);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-family: var(--font-sans);
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.6;
}

.hero-avatar {
    margin-top: var(--space-lg);
}

.hero-avatar img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-border);
}

/* ============================================
   Posts Grid (Card Layout)
   ============================================ */

.posts-section {
    padding: var(--space-xl) 0 var(--space-2xl);
}

.section-title {
    font-size: 1.75rem;
    margin-bottom: var(--space-lg);
    text-align: center;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

@media (max-width: 768px) {
    .posts-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* ============================================
   Post Card
   ============================================ */

.post-card {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.post-card-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--color-background-alt);
}

.post-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.post-card-content {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-date {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
    display: block;
}

.post-card-title {
    font-size: 1.35rem;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
}

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

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

.post-card-description {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
    flex: 1;
}

.post-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    margin-top: auto;
}

.post-tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.tag {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text);
    text-decoration: none;
    transition: all 0.2s ease;
}

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

.read-more {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-accent);
    white-space: nowrap;
}

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

/* ============================================
   Page Header (for list pages)
   ============================================ */

.page-header {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-lg);
}

.page-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--space-md);
}

.page-description {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Single Post
   ============================================ */

.post-single {
    padding: var(--space-xl) 0 var(--space-2xl);
}

.post-header {
    text-align: center;
    padding: var(--space-lg) 0 var(--space-xl);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-xl);
}

.post-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--space-md);
}

.post-description {
    font-family: var(--font-sans);
    font-size: 1.35rem;
    color: var(--color-text-light);
    max-width: 660px;
    margin: 0 auto var(--space-md);
    line-height: 1.5;
}

.post-featured-image {
    margin-bottom: var(--space-xl);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.post-featured-image img {
    width: 100%;
    height: auto;
}

.post-content {
    font-size: 1.125rem;
    line-height: 1.8;
}

.post-content h2 {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.post-content h3 {
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
}

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

.post-content li {
    margin-bottom: var(--space-sm);
}

.post-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--space-md);
    margin: var(--space-lg) 0;
    color: var(--color-text-light);
    font-style: italic;
}

.post-content code {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.9em;
    background: var(--color-background-alt);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

.post-content pre {
    background: var(--color-background-alt);
    padding: var(--space-md);
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin-bottom: var(--space-md);
}

.post-content pre code {
    background: none;
    padding: 0;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: var(--space-lg) 0;
}

.post-footer {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
}

.post-footer-line {
    height: 1px;
    background: var(--color-border);
    margin-bottom: var(--space-lg);
}

.post-footer-text {
    font-family: var(--font-sans);
    font-size: 1rem;
    text-align: center;
    margin-bottom: var(--space-sm);
}

.post-disclaimer {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--color-text-light);
    text-align: center;
    font-style: italic;
}

/* ============================================
   Post Navigation
   ============================================ */

.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.post-nav-link {
    display: flex;
    flex-direction: column;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: all 0.2s ease;
}

.post-nav-link:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.post-nav-prev {
    text-align: left;
}

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

.post-nav-label {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.post-nav-title {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

@media (max-width: 768px) {
    .post-navigation {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   View All Button
   ============================================ */

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

.button {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    padding: 0.875rem 2rem;
    background: var(--color-text);
    color: var(--color-background);
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.button:hover {
    background: var(--color-accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
    background: var(--color-background-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--space-xl) 0;
    margin-top: var(--space-2xl);
}

.site-footer p {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: var(--space-sm);
}

.site-footer a {
    color: var(--color-text);
}

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

/* ============================================
   Company Logos
   ============================================ */

.company-logo {
    display: inline-block;
    width: 32px;
    height: 32px;
    margin-right: 0.75rem;
    vertical-align: middle;
    object-fit: contain;
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 768px) {
    :root {
        --space-xl: 2.5rem;
        --space-2xl: 3.5rem;
    }

    .hero {
        padding: var(--space-xl) 0 var(--space-lg);
    }

    .posts-section {
        padding: var(--space-lg) 0 var(--space-xl);
    }
}