/**
 * ================================================
 * SEMANTIC SEO ENGINE - STYLESHEET
 * ================================================
 * 
 * Clean, readable styles untuk konten yang human-friendly
 * Fokus pada readability dan accessibility
 */

/* ================================================
   CSS RESET & BASE
   ================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-bg: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-border: #e5e7eb;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Max widths */
  --max-width-content: 720px;
  --max-width-container: 1200px;
}

html {
  font-size: 16px;
  line-height: 1.6;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* ================================================
   TYPOGRAPHY
   ================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ================================================
   LAYOUT
   ================================================ */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-lg);
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width-container);
  margin: 0 auto;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-menu a {
  color: var(--color-text-light);
}

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

.main-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  color: var(--color-text-light);
}

/* ================================================
   ARTICLE STYLES
   ================================================ */
.article-header {
  margin-bottom: var(--spacing-2xl);
}

.article-category {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.article-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.article-excerpt {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.author-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.author-name {
  font-weight: 600;
  display: block;
}

.author-bio {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.article-date {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.article-featured-image {
  margin-bottom: var(--spacing-2xl);
}

.article-featured-image img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.article-featured-image figcaption {
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
  margin-top: var(--spacing-sm);
}

/* Article Body - Clean Typography */
.article-body {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.8;
}

.article-body h2 {
  font-family: var(--font-sans);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.article-body h3 {
  font-family: var(--font-sans);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.article-body p {
  margin-bottom: var(--spacing-lg);
}

.article-body ul,
.article-body ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.article-body li {
  margin-bottom: var(--spacing-sm);
}

.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-style: italic;
  color: var(--color-text-light);
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: var(--spacing-lg) 0;
}

/* Article Footer */
.article-footer {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-bg-secondary);
  border-radius: 4px;
  font-size: 0.875rem;
}

.share-buttons {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.share-buttons a {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-secondary);
  border-radius: 4px;
  font-size: 0.875rem;
}

/* Author Box */
.author-box {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin-top: var(--spacing-2xl);
}

.author-box h3 {
  margin-bottom: var(--spacing-md);
}

.author-box-content {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.author-avatar-large {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
}

/* Related Articles */
.related-articles {
  margin-top: var(--spacing-2xl);
}

.related-articles h3 {
  margin-bottom: var(--spacing-lg);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.related-card {
  display: block;
  color: var(--color-text);
}

.related-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: var(--spacing-sm);
}

.related-card h4 {
  font-size: 1rem;
}

/* ================================================
   HOME PAGE
   ================================================ */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-light);
}

.features {
  margin-top: var(--spacing-2xl);
}

.features h2 {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  padding: var(--spacing-xl);
  background-color: var(--color-bg-secondary);
  border-radius: 8px;
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 768px) {
  .article-title {
    font-size: 1.75rem;
  }
  
  .article-meta {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .main-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}