/* ========================================
   Base Styles & Typography
   ======================================== */

:root {
  --color-text: #333;
  --color-text-light: #666;
  --color-border: #eee;
  --color-link: #0066cc;
  --color-link-hover: #004499;
  --max-width: 1200px;
  --sidebar-width: 250px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  margin-top: 0;
}

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

a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

/* ========================================
   Layout Classes
   ======================================== */

.body-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
}

.content-grid {
  display: flex;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm);
  flex: 1;
  width: 100%;
}

.main-content {
  flex: 1;
  min-width: 0;
  padding-top: var(--spacing-lg);
}

.sidebar {
  flex: 0 0 var(--sidebar-width);
  min-width: var(--sidebar-width);
}

.sticky-container {
  position: sticky;
  top: var(--spacing-sm);
}

/* ========================================
   Sidebar Components
   ======================================== */

.site-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.sidebar-nav {
  margin-top: var(--spacing-lg);
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-item {
  margin-bottom: var(--spacing-xs);
}

.profile-image {
  width: 100%;
  border-radius: 50%;
  margin-bottom: var(--spacing-sm);
  display: block;
}

/* ========================================
   Content Components
   ======================================== */

.date-separator {
  color: var(--color-text-light);
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-border);
}

.date-separator:first-of-type {
  margin-top: 0;
}

.date-group {
  margin-bottom: var(--spacing-lg);
}

.article-preview {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
}

.post-meta {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin: 0;
}

.post-meta-inline {
  color: var(--color-text-light);
  font-size: 0.9rem;
  font-weight: normal;
  margin-left: 1rem;
}

.permalink {
  font-weight: normal;
  opacity: 0.6;
  text-decoration: none;
}

.permalink:hover {
  opacity: 1;
  text-decoration: none;
}

/* ========================================
   Table Styling (Blog List)
   ======================================== */

.blog-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
}

.blog-table thead {
  border-bottom: 2px solid var(--color-border);
}

.blog-table th {
  text-align: left;
  padding: var(--spacing-sm);
  font-weight: 600;
  color: var(--color-text);
}

.blog-table td {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.blog-table tbody tr:last-child td {
  border-bottom: none;
}

.blog-table .date-column {
  width: 120px;
  white-space: nowrap;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.blog-table .post-column {
  min-width: 200px;
}

.blog-table .post-column a {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.blog-table .tags-column {
  width: 150px;
}

/* ========================================
   Mobile Styles
   ======================================== */

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .content-grid {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .sidebar {
    flex: 1;
    min-width: 100%;
    text-align: center;
    order: -1;
  }

  .profile-image {
    display: none;
  }

  .main-content {
    min-height: 75vh;
  }

  /* Mobile table styling */
  .blog-table {
    font-size: 16px;
  }

  .blog-table th,
  .blog-table td {
    padding: 0.75rem 0.5rem;
    line-height: 1.5;
  }

  .blog-table .date-column {
    width: 100px;
    font-size: 0.9rem;
  }

  .blog-table .post-column {
    min-width: 150px;
  }

  .blog-table .tags-column {
    display: none;
  }
}