/*
Theme Name: M365 Guide
Theme URI: https://github.com/connorwalker110
Author: Connor Walker
Description: A clean, modern WordPress theme for Microsoft 365, Intune, and technical guides.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: m365guide
Tags: blog, technology, responsive, custom-colors, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* =========================================================
   CSS Custom Properties
   ========================================================= */
:root {
  --color-primary:       #0078d4;
  --color-primary-dark:  #005a9e;
  --color-primary-light: #e8f4fd;
  --color-accent:        #00b4d8;
  --color-text:          #1b1b1b;
  --color-text-muted:    #6b7280;
  --color-border:        #e5e7eb;
  --color-bg:            #ffffff;
  --color-bg-alt:        #f8fafc;
  --color-tag-bg:        #eff6ff;
  --color-tag-text:      #1d4ed8;
  --color-code-bg:       #1e1e2e;
  --color-code-text:     #cdd6f4;

  --font-sans:  'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.1), 0 4px 8px rgba(0,0,0,.05);

  --transition: 0.2s ease;

  --content-width:    760px;
  --container-width: 1200px;
  --sidebar-width:   300px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul, ol { padding-left: 1.5em; }

/* =========================================================
   Layout
   ========================================================= */
.site-wrapper { display: flex; flex-direction: column; min-height: 100vh; }
.site-main { flex: 1; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: 3rem;
  align-items: start;
}

@media (max-width: 1024px) {
  .layout-with-sidebar { grid-template-columns: 1fr; }
  .site-sidebar { display: none; }
}

/* =========================================================
   Header
   ========================================================= */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 2rem;
}

.site-branding { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }

.site-logo img {
  height: 36px;
  width: auto;
}

.site-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.site-title a { color: inherit; }
.site-title a:hover { color: var(--color-primary); }

.site-title-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.title-badge {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--color-primary);
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 0.25rem;
}

/* Main navigation */
.main-navigation { display: flex; align-items: center; gap: 0.25rem; }

.main-navigation ul {
  display: flex;
  align-items: center;
  list-style: none;
  padding: 0;
  gap: 0.25rem;
}

.main-navigation a {
  display: block;
  padding: 0.5rem 0.875rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition);
}

.main-navigation a:hover,
.main-navigation .current-menu-item > a,
.main-navigation .current_page_item > a {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Search toggle */
.header-search { display: flex; align-items: center; }

.search-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition);
  display: flex;
  align-items: center;
}

.search-toggle:hover { background: var(--color-bg-alt); color: var(--color-primary); }

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text);
  border-radius: var(--radius-md);
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.mobile-menu-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.is-active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .mobile-menu-toggle { display: flex; }
  .main-navigation {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-md);
  }
  .main-navigation.is-active { display: block; }
  .main-navigation ul { flex-direction: column; gap: 0.25rem; align-items: stretch; }
  .main-navigation a { padding: 0.75rem 1rem; }
}

/* =========================================================
   Hero / Page Header
   ========================================================= */
.page-hero {
  background: linear-gradient(135deg, #0078d4 0%, #005a9e 60%, #003f6e 100%);
  color: #fff;
  padding: 4rem 0 3.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.page-hero .container { position: relative; }

.page-hero-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.9);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 1rem;
}

.page-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.page-hero p {
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 540px;
  margin: 0 auto;
}

/* =========================================================
   Post Cards (Archive / Home)
   ========================================================= */
.posts-section { padding: 3rem 0 4rem; }

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

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

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: #d0e6f5;
}

.post-card-thumbnail {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.post-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.post-card:hover .post-card-thumbnail img { transform: scale(1.04); }

.post-card-no-image {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #dbeafe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.post-card-no-image .placeholder-icon {
  width: 48px;
  height: 48px;
  opacity: 0.35;
  color: var(--color-primary);
}

.post-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; gap: 0.75rem; }

.post-card-meta { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }

.post-card-category {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 3px 10px;
  border-radius: 100px;
  text-decoration: none;
}

.post-card-category:hover { background: #bfdbfe; color: var(--color-primary-dark); }

.post-card-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.post-card-reading-time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-left: auto;
}

.post-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--color-text);
  text-decoration: none;
  display: block;
  transition: color var(--transition);
}

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

.post-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.post-card-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.post-card-author img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

.read-more-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.read-more-link:hover { gap: 8px; }

/* =========================================================
   Featured Post (first post on home)
   ========================================================= */
.featured-post {
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.featured-post:hover { box-shadow: var(--shadow-md); }

.featured-post-image { overflow: hidden; min-height: 320px; }
.featured-post-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.featured-post:hover .featured-post-image img { transform: scale(1.03); }

.featured-post-body {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}

.featured-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 10px;
  border-radius: 100px;
  width: fit-content;
}

.featured-post-title {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
  display: block;
}

.featured-post-title:hover { color: var(--color-primary); }

.featured-post-excerpt { color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.7; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
  width: fit-content;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 120, 212, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .featured-post { grid-template-columns: 1fr; }
  .featured-post-image { min-height: 200px; }
  .featured-post-body { padding: 1.75rem; }
}

/* =========================================================
   Single Post / Article
   ========================================================= */
.article-wrapper { padding: 3rem 0 4rem; }

.article-header { margin-bottom: 2.5rem; }

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.article-breadcrumb a { color: var(--color-primary); }
.article-breadcrumb a:hover { text-decoration: underline; }
.article-breadcrumb svg { flex-shrink: 0; }

.article-meta { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }

.article-category {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: 100px;
  text-decoration: none;
}

.article-difficulty {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 100px;
}

.difficulty-beginner { background: #dcfce7; color: #166534; }
.difficulty-intermediate { background: #fef9c3; color: #854d0e; }
.difficulty-advanced { background: #fee2e2; color: #991b1b; }

.article-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.article-description {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: var(--content-width);
  margin-bottom: 1.5rem;
}

.article-byline {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.author-info { display: flex; align-items: center; gap: 0.75rem; }

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.author-name { font-weight: 600; font-size: 0.9rem; color: var(--color-text); }
.author-role { font-size: 0.78rem; color: var(--color-text-muted); }

.article-stats {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.article-stat { display: flex; align-items: center; gap: 0.35rem; }

/* Featured image */
.article-featured-image {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-md);
}

/* Article content */
.article-content {
  max-width: var(--content-width);
  font-size: 1.025rem;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary-light);
}

.article-content h2:first-child { margin-top: 0; }

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 2rem 0 0.75rem;
}

.article-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 1.5rem 0 0.5rem;
}

.article-content p { margin-bottom: 1.25rem; }
.article-content p:last-child { margin-bottom: 0; }

.article-content ul, .article-content ol {
  margin: 1rem 0 1.25rem;
  padding-left: 1.75rem;
}

.article-content li { margin-bottom: 0.4rem; }

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: rgba(0, 120, 212, 0.4);
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--color-primary-dark);
  text-decoration-color: var(--color-primary-dark);
}

.article-content strong { font-weight: 700; color: var(--color-text); }
.article-content em { font-style: italic; }

/* Inline code */
.article-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: #f1f5f9;
  color: #d63384;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid #e2e8f0;
}

/* Code blocks */
.article-content pre {
  background: var(--color-code-bg);
  border-radius: var(--radius-lg);
  margin: 1.75rem 0;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-md);
}

.article-content pre code {
  display: block;
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-code-text);
  background: none;
  border: none;
  border-radius: 0;
  overflow-x: auto;
  tab-size: 2;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 0.65rem 1.25rem;
}

.code-block-lang {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.copy-code-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.6);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all var(--transition);
}

.copy-code-btn:hover { background: rgba(255,255,255,0.15); color: rgba(255,255,255,0.9); }
.copy-code-btn.copied { color: #4ade80; border-color: rgba(74,222,128,0.3); }

/* Blockquote */
.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-light);
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-primary-dark);
}

.article-content blockquote p { margin: 0; }

/* Info / Warning / Note callouts */
.callout {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  margin: 1.75rem 0;
  border: 1px solid transparent;
  font-size: 0.95rem;
}

.callout-icon { flex-shrink: 0; width: 20px; height: 20px; margin-top: 2px; }
.callout-body { flex: 1; }
.callout-title { font-weight: 700; margin-bottom: 0.25rem; }

.callout-info    { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }
.callout-warning { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.callout-tip     { background: #f0fdf4; border-color: #bbf7d0; color: #14532d; }
.callout-danger  { background: #fef2f2; border-color: #fecaca; color: #991b1b; }

/* Tables */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.article-content th {
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.article-content td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.article-content tr:last-child td { border-bottom: none; }
.article-content tr:nth-child(even) td { background: var(--color-bg-alt); }

/* Images in content */
.article-content figure { margin: 2rem 0; }
.article-content figure img { border-radius: var(--radius-md); box-shadow: var(--shadow-md); }
.article-content figcaption { font-size: 0.82rem; color: var(--color-text-muted); text-align: center; margin-top: 0.5rem; font-style: italic; }

/* Tags */
.article-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 2.5rem 0 0; }

.tag {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  border: 1px solid #bfdbfe;
  padding: 4px 12px;
  border-radius: 100px;
  text-decoration: none;
  transition: all var(--transition);
}

.tag:hover { background: #dbeafe; border-color: var(--color-primary); color: var(--color-primary-dark); }

/* =========================================================
   Table of Contents
   ========================================================= */
.toc-box {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
}

.toc-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toc-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.3rem; }
.toc-list li { display: flex; align-items: center; gap: 0.5rem; }

.toc-list a {
  font-size: 0.875rem;
  color: var(--color-text);
  text-decoration: none;
  padding: 4px 0;
  transition: color var(--transition);
  line-height: 1.4;
}

.toc-list a:hover { color: var(--color-primary); }
.toc-list a::before { content: ''; display: block; width: 6px; height: 6px; border-radius: 50%; background: var(--color-border); flex-shrink: 0; }
.toc-list a:hover::before { background: var(--color-primary); }

/* =========================================================
   Sidebar
   ========================================================= */
.site-sidebar { position: sticky; top: 88px; display: flex; flex-direction: column; gap: 1.5rem; }

.widget {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.widget-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

/* Recent posts widget */
.recent-post-item {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.recent-post-item:last-child { border-bottom: none; padding-bottom: 0; }
.recent-post-item:first-child { padding-top: 0; }

.recent-post-thumb {
  width: 60px;
  height: 50px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-bg-alt);
}

.recent-post-info { flex: 1; min-width: 0; }

.recent-post-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-decoration: none;
  margin-bottom: 0.25rem;
  display: block;
}

.recent-post-title:hover { color: var(--color-primary); }
.recent-post-date { font-size: 0.75rem; color: var(--color-text-muted); }

/* Categories widget */
.category-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.25rem; }

.category-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--color-text);
  transition: background var(--transition), color var(--transition);
}

.category-list a:hover { background: var(--color-primary-light); color: var(--color-primary); }

.category-count {
  font-size: 0.75rem;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  padding: 1px 7px;
  border-radius: 100px;
  font-weight: 500;
}

/* Search widget */
.widget-search { display: flex; gap: 0.5rem; }

.widget-search input {
  flex: 1;
  padding: 0.6rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
  outline: none;
}

.widget-search input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(0,120,212,0.12); }

.widget-search button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.6rem 0.875rem;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
}

.widget-search button:hover { background: var(--color-primary-dark); }

/* =========================================================
   Post Navigation
   ========================================================= */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.nav-link {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition);
}

.nav-link:hover { border-color: var(--color-primary); background: var(--color-primary-light); }

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

.nav-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.nav-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

@media (max-width: 580px) { .post-navigation { grid-template-columns: 1fr; } }

/* =========================================================
   Author Bio Box
   ========================================================= */
.author-bio-box {
  display: flex;
  gap: 1.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-top: 2.5rem;
}

.author-bio-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--color-border);
}

.author-bio-content { flex: 1; }

.author-bio-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.author-bio-role {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.author-bio-text { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.65; }

@media (max-width: 580px) { .author-bio-box { flex-direction: column; } }

/* =========================================================
   Comments
   ========================================================= */
.comments-section {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}

.comments-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--color-text);
}

.comment-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 1.5rem; }

.comment-body {
  display: flex;
  gap: 1rem;
}

.comment-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.comment-content {
  flex: 1;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
}

.comment-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.comment-author-name { font-weight: 600; font-size: 0.9rem; color: var(--color-text); }
.comment-date { font-size: 0.78rem; color: var(--color-text-muted); }
.comment-text { font-size: 0.9rem; color: var(--color-text); line-height: 1.65; }
.comment-text p { margin: 0; }

.comment-form input,
.comment-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
  outline: none;
  margin-bottom: 1rem;
}

.comment-form input:focus,
.comment-form textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,120,212,0.1);
}

.comment-form textarea { min-height: 120px; resize: vertical; }

.comment-form-title { font-size: 1.1rem; font-weight: 700; margin: 2rem 0 1rem; }

.comment-form-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

@media (max-width: 580px) { .comment-form-fields { grid-template-columns: 1fr; } }

/* =========================================================
   Pagination
   ========================================================= */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.35rem;
  margin-top: 3rem;
}

.page-numbers {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.page-numbers:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); }
.page-numbers.current { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.page-numbers.dots { border: none; pointer-events: none; }

/* =========================================================
   Search Results
   ========================================================= */
.search-form {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.search-form input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color var(--transition);
}

.search-form input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(0,120,212,0.1); }

/* =========================================================
   404 Page
   ========================================================= */
.error-page {
  padding: 6rem 0;
  text-align: center;
}

.error-code {
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 900;
  color: var(--color-primary-light);
  line-height: 1;
  letter-spacing: -0.05em;
  margin-bottom: 1rem;
  position: relative;
}

.error-code::after {
  content: '404';
  position: absolute;
  inset: 0;
  -webkit-text-stroke: 2px var(--color-border);
  color: transparent;
}

.error-page h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 1rem; color: var(--color-text); }
.error-page p { color: var(--color-text-muted); margin-bottom: 2rem; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: #0f1623;
  color: rgba(255,255,255,0.7);
  padding: 3.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }

.footer-brand { }

.footer-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-tagline { font-size: 0.875rem; line-height: 1.65; max-width: 260px; }

.footer-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.9);
  margin-bottom: 1rem;
}

.footer-links { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }

.footer-links a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover { color: rgba(255,255,255,0.95); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-legal { display: flex; gap: 1.25rem; }
.footer-legal a { color: rgba(255,255,255,0.5); text-decoration: none; }
.footer-legal a:hover { color: rgba(255,255,255,0.8); }

/* =========================================================
   Progress Bar
   ========================================================= */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 9999;
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* =========================================================
   Back to Top
   ========================================================= */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 50;
}

.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-2px); }

/* =========================================================
   Skip link (accessibility)
   ========================================================= */
.skip-link {
  position: absolute;
  top: -999px;
  left: 1rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 1000;
  text-decoration: none;
}

.skip-link:focus { top: 0; }

/* =========================================================
   Utilities
   ========================================================= */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.text-muted { color: var(--color-text-muted); }
.divider { border: none; border-top: 1px solid var(--color-border); margin: 2rem 0; }

/* =========================================================
   Post List (home page)
   ========================================================= */
.posts-list {
  display: flex;
  flex-direction: column;
}

.post-list-item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 4rem 0;
  border-bottom: 1px solid var(--color-border);
}

.post-list-item:first-child { padding-top: 0; }
.post-list-item:last-child  { border-bottom: none; }

.post-list-meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
}

.post-list-date,
.post-list-read-time {
  font-size: .8rem;
  color: var(--color-text-muted);
}

.post-list-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.3;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

.post-list-title:hover { color: var(--color-primary); }

.post-list-excerpt {
  font-size: .9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =========================================================
   About Me widget
   ========================================================= */
.widget-about {
  text-align: center;
  padding: 1.75rem 1.5rem;
}

.about-avatar-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.about-avatar {
  width: 80px !important;
  height: 80px !important;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.about-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .2rem;
}

.about-role {
  font-size: .78rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: .75rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.about-bio {
  font-size: .875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}