/* Modern Blog CSS - Matching ArticlesPage Design */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #64748b;
    --background: #ffffff;
    --surface: #f8fafc;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --pastel-purple: #e9d5ff;
    --pastel-blue: #dbeafe;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--surface);
}

/* Header */
header {
    background: white;
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
}

.logo-link h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

.logo {
    height: 40px;
    width: auto;
}

nav a {
    color: var(--text);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--primary);
}

/* Main Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

/* Section Title */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin-bottom: 2rem;
    border-radius: 1rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Articles List - Horizontal Cards */
.articles-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.article-card-horizontal {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: row;
}

.article-card-horizontal:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.article-image-container {
    width: 250px;
    flex-shrink: 0;
}

.article-image-horizontal {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 200px;
}

.article-content-horizontal {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.article-header-info {
    flex-grow: 1;
}

.article-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
    color: var(--text);
}

.article-summary {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Topic Badge */
.article-topic-badge {
    margin-bottom: 0.5rem;
}

.topic-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--pastel-blue);
    color: #1e40af;
}

/* Key Insights */
.article-insights h4 {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.insights-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.insight-badge {
    display: inline-flex;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    background: var(--pastel-purple);
    color: #6b21a8;
}

/* Article Footer */
.article-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.article-meta-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Read Article Button */
.btn-read-article {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    transition: background 0.2s;
}

.btn-read-article:hover {
    background: var(--primary-dark);
}

.btn-icon {
    font-size: 1rem;
}

/* Article Page */
.article-header {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

.article-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.article-header-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: 1rem;
    margin: 2rem 0;
}

.article-lead {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-top: 1.5rem;
    text-align: left;
}

.article-body {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
}

.article-body h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin: 2rem 0 1rem;
}

.article-body h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
}

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

.article-body ul, .article-body ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

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

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 2rem 0;
}

.article-body blockquote {
    border-left: 4px solid var(--primary);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--text-light);
    background: var(--surface);
    padding: 1rem;
    border-radius: 0 0.5rem 0.5rem 0;
}

.article-body pre {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.article-sources {
    max-width: 800px;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 2px solid var(--border);
}

.article-sources h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.article-sources ol {
    padding-left: 2rem;
}

.article-sources li {
    margin-bottom: 0.75rem;
}

.article-sources a {
    color: var(--primary);
    text-decoration: none;
    word-break: break-all;
}

/* Archive Page Legacy Support */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.article-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.article-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-content {
    padding: 1.5rem;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.75rem;
}

.read-more {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* Footer */
footer {
    background: white;
    border-top: 1px solid var(--border);
    padding: 3rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .article-card-horizontal {
        flex-direction: column;
    }
    
    .article-image-container {
        width: 100%;
        height: 200px;
    }
    
    .article-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-header h1 {
        font-size: 2rem;
    }
    
    nav a {
        margin-left: 1rem;
    }
}