/* ============================================
   Sudhanverse Blog - Modern CSS Design System
   ============================================ */

/* CSS Custom Properties (Design Tokens) */
:root {
  /* Colors - Light Mode */
  --color-bg: #f8fafc;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f1f5f9;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-accent: #8b5cf6;
  --color-success: #10b981;
  --color-error: #ef4444;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Layout */
  --max-width: 1200px;
  --content-width: 720px;
  --sidebar-width: 320px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
}

/* Dark Mode */
[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #334155;
}

/* ============================================
   Base Styles
   ============================================ */

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.3;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* ============================================
   Reading Progress Bar
   ============================================ */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  width: 0%;
  z-index: 1000;
  transition: width 50ms linear;
}

/* ============================================
   Header
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  backdrop-filter: blur(8px);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-xl);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.logo-initials {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  font-weight: 700;
}

.logo-text {
  font-size: 1.125rem;
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}

.nav-link {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  justify-self: end;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-border);
}

.sun-icon {
  display: block;
}

.moon-icon {
  display: none;
}

[data-theme="dark"] .sun-icon {
  display: none;
}

[data-theme="dark"] .moon-icon {
  display: block;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .header-container {
    display: flex;
    justify-content: space-between;
  }

  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
    justify-content: flex-start;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-menu-btn {
    display: flex;
  }
}

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

.hero {
  background: linear-gradient(-45deg, #1e293b, #0f172a, #1e3a5f, #0c1929);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
  color: white;
  padding: 3rem var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) scale(1);
  }

  50% {
    transform: translateY(-8px) scale(1.02);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
  }

  50% {
    box-shadow: 0 0 20px 10px rgba(59, 130, 246, 0);
  }
}

[data-theme="dark"] .hero {
  background: linear-gradient(-45deg, #1e1e2e, #11111b, #1a1a2e, #0d0d14);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.2);
  margin-bottom: var(--space-lg);
  animation: float 4s ease-in-out infinite, fadeInUp 0.6s ease;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  line-height: 1.1;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: #94a3b8;
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  animation: fadeInUp 0.6s ease 0.4s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  animation: fadeInUp 0.6s ease 0.6s both;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: #60a5fa;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: #94a3b8;
}

/* ============================================
   Container & Layout
   ============================================ */

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

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  padding: var(--space-2xl) 0;
}

@media (min-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr var(--sidebar-width);
  }
}

.main-content {
  width: 100%;
}

/* ============================================
   Welcome Section
   ============================================ */

.welcome-section {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.welcome-section h2 {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.welcome-description {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Posts Grid
   ============================================ */

.section-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
  text-align: center;
}

.posts-grid {
  display: grid;
  gap: var(--space-lg);
}

.post-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease both;
}

.post-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), #a78bfa);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.post-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
  border-color: var(--color-primary);
}

.post-card:hover .post-card-accent {
  transform: scaleX(1);
}

.post-meta {
  display: flex;
  gap: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.post-meta i {
  margin-right: 6px;
  color: var(--color-primary);
}

.post-date,
.post-reading-time {
  display: flex;
  align-items: center;
}

.post-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.post-title a {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

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

.post-excerpt {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.post-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

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

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tag:hover,
.tag.active {
  background: var(--color-primary);
  color: white;
}

.read-more {
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.read-more i {
  transition: transform var(--transition-fast);
}

.post-card:hover .read-more i {
  transform: translateX(4px);
}

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

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.sidebar-card {
  background: rgba(var(--color-bg-secondary-rgb, 255, 255, 255), 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .sidebar-card {
  background: rgba(30, 30, 46, 0.7);
}

.sidebar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), #a78bfa, var(--color-primary));
  background-size: 200% 100%;
  animation: shimmer 3s linear infinite;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

.sidebar-card:hover::before {
  opacity: 1;
}

.sidebar-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.1);
}

.sidebar-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.about-content {
  text-align: center;
}

.author-image {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  object-fit: cover;
  margin-bottom: var(--space-md);
  border: 3px solid var(--color-border);
}

.about-content p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
}

.learn-more {
  font-size: 0.875rem;
  font-weight: 600;
}

/* Newsletter */
.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.newsletter-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.newsletter-btn {
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.newsletter-btn:hover {
  background: var(--color-primary-dark);
}

.newsletter-message {
  font-size: 0.875rem;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  text-align: center;
}

.newsletter-message.success {
  background: #ecfdf5;
  color: var(--color-success);
}

.newsletter-message.error {
  background: #fef2f2;
  color: var(--color-error);
}

[data-theme="dark"] .newsletter-message.success {
  background: rgba(16, 185, 129, 0.1);
}

[data-theme="dark"] .newsletter-message.error {
  background: rgba(239, 68, 68, 0.1);
}

/* Tags Grid */
.tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.sidebar-tag {
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  transition: all var(--transition-fast);
}

.sidebar-tag:hover {
  background: var(--color-primary);
  color: white;
}

.sidebar-tag span {
  opacity: 0.7;
}

/* ============================================
   Article Page
   ============================================ */

.article-page {
  padding: var(--space-2xl) 0;
}

.article-container {
  max-width: var(--content-width);
  margin: 0 auto;
}

.article-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.article-header .article-meta {
  margin-bottom: var(--space-md);
}

.article-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--space-md);
}

.article-tags {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Article Content */
.article-content {
  font-size: 1.125rem;
  line-height: 1.9;
  color: var(--color-text);
}

.article-content h1 {
  font-size: 2rem;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
  font-weight: 700;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--space-sm);
}

.article-content h2 {
  font-size: 1.75rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  font-weight: 600;
  color: var(--color-text);
  position: relative;
  padding-left: var(--space-md);
}

.article-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
}

.article-content h3 {
  font-size: 1.375rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  font-weight: 600;
  color: var(--color-text);
}

.article-content p {
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

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

.article-content ul {
  list-style: disc;
  list-style-position: outside;
}

.article-content ul li {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-xs);
}

.article-content ol li {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-xs);
}

.article-content ol li {
  margin-bottom: var(--space-md);
  padding-left: var(--space-sm);
}

.article-content strong {
  color: var(--color-text);
  font-weight: 600;
}

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

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  transition: all var(--transition-fast);
}

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

/* Blockquotes */
.article-content blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

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

/* Horizontal Rule */
.article-content hr {
  border: none;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--space-2xl) 0;
}

/* Images in article */
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
  box-shadow: var(--shadow-md);
}

/* Tables */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.95rem;
}

.article-content th,
.article-content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  text-align: left;
}

.article-content th {
  background: var(--color-bg-secondary);
  font-weight: 600;
}

.article-content tr:nth-child(even) {
  background: var(--color-bg-tertiary);
}

/* Code Blocks */
.article-content pre {
  background: #1e293b;
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
  margin-top: var(--space-md);
  max-width: 100%;
}

[data-theme="dark"] .article-content pre {
  background: #0d1117;
}

.article-content pre code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
  color: #e2e8f0;
  line-height: 1.6;
  background: transparent;
  padding: 0;
  white-space: pre;
  display: block;
}

.code-block {
  background: #1e293b;
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

[data-theme="dark"] .code-block {
  background: #0d1117;
}

.code-block code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
  color: #e2e8f0 !important;
  line-height: 1.6;
  display: block;
  white-space: pre;
}

/* Ensure code text is always visible */
pre.code-block code,
.article-content pre.code-block code,
.article-content pre code {
  color: #e2e8f0 !important;
  background: transparent !important;
  display: block !important;
  opacity: 1 !important;
  visibility: visible !important;
}

.article-content code:not(pre code) {
  background: var(--color-bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875em;
}

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

.interaction-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.like-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-bg-tertiary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.like-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.like-btn.liked {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.share-buttons {
  display: flex;
  gap: var(--space-sm);
}

.share-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.share-btn:hover {
  background: var(--color-primary);
  color: white;
}

/* Author Section */
.author-section {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-top: var(--space-2xl);
}

.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.author-info {
  flex: 1;
}

.author-info h3 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.author-info p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

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

.author-links a {
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.author-links a:hover {
  color: var(--color-primary);
  transform: scale(1.15);
}

.author-section .like-btn {
  flex-shrink: 0;
  align-self: center;
}

/* Comments Section */
.comments-section {
  margin-top: var(--space-2xl);
}

.comments-section h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
}

/* Comment Summary (AI-generated) */
.comment-summary {
  background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-secondary));
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.comment-summary .summary-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  font-size: 0.875rem;
}

.comment-summary .summary-header i {
  font-size: 1rem;
}

.comment-summary p {
  color: var(--color-text);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: var(--space-sm);
  font-style: italic;
}

.comment-summary .summary-meta {
  display: flex;
  gap: var(--space-md);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.comment-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.name-input-wrapper {
  position: relative;
}

.name-error {
  display: none;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: #fee;
  border: 1px solid #fcc;
  border-radius: var(--radius-md);
  color: #c33;
  font-size: 0.875rem;
  animation: slideDown 0.3s ease;
}

.name-error i {
  font-size: 1rem;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

[data-theme="dark"] .name-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.comment-input,
.comment-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-bg);
  color: var(--color-text);
  resize: vertical;
  transition: border-color 0.2s ease;
}

.comment-input.input-error {
  border-color: #ef4444;
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

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

.comment-input:focus,
.comment-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.comment-submit {
  align-self: flex-start;
  padding: var(--space-sm) var(--space-xl);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.comment-submit:hover {
  background: var(--color-primary-dark);
}

/* AI-Generated Name Badge */
.name-badge {
  margin-top: 0.5rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 8px;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideInFromTop 0.3s ease-out;
}

.name-badge i {
  font-size: 1rem;
}

.name-badge strong {
  font-weight: 600;
}

@keyframes slideInFromTop {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.comments-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.comment {
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-sm);
}

.comment-author-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.comment-author {
  font-weight: 600;
  font-size: 0.875rem;
}

.comment-date {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.comment-text {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.no-comments {
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-xl);
}

/* Comments Header with Sort Dropdown */
.comments-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.comment-sort {
  padding: 0.5rem 1rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.comment-sort:hover {
  border-color: var(--color-primary);
}

.comment-sort:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Comment Like Button (Heart on Right) */
.comment-like-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.5rem;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.comment-like-btn:hover {
  color: var(--color-text-secondary);
  transform: scale(1.05);
}

.comment-like-btn.liked {
  color: #ff6b6b;
}

.comment-like-btn.liked:hover {
  color: #ff5252;
}

.comment-like-btn i {
  font-size: 1rem;
  transition: transform 0.2s ease;
}

.comment-like-btn:active i {
  transform: scale(1.2);
}

.comment-like-btn .like-count {
  font-weight: 500;
  font-size: 0.85rem;
}

/* ============================================
   Tag Page
   ============================================ */

.tag-page {
  padding: var(--space-2xl) 0;
}

.tag-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.back-link {
  display: inline-block;
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

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

.tag-header h1 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.tag-badge {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
}

.no-posts {
  text-align: center;
  padding: var(--space-3xl);
}

.no-posts i {
  font-size: 3rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.no-posts h3 {
  margin-bottom: var(--space-sm);
}

.no-posts p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.btn:hover {
  background: var(--color-primary-dark);
  color: white;
}

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

.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-3xl);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  text-align: center;
}

.footer-container p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.slide-up {
  animation: slideUp 0.6s ease-out;
}

/* ============================================
   Custom Scrollbar
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-text-muted);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

/* ============================================
   Selection
   ============================================ */

::selection {
  background: rgba(59, 130, 246, 0.2);
  color: var(--color-text);
}

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

@media (max-width: 768px) {
  .header-container {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
  }

  .hero {
    padding: 2.4rem var(--space-md);
  }

  .container {
    padding: 0 var(--space-md);
  }

  .article-container {
    padding: 0 var(--space-md);
  }

  .article-title {
    font-size: 1.75rem;
  }

  .author-section {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .author-section .like-btn {
    margin-top: var(--space-md);
  }

  .author-links {
    justify-content: center;
  }
}

/* ============================================
   Feedback Button & Modal
   ============================================ */

.feedback-btn {
  position: fixed;
  bottom: 32px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border: none;
  border-radius: var(--radius-full);
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  z-index: 999;
  transition: all var(--transition-normal);
}

.feedback-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.4);
}

.feedback-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.feedback-modal.open {
  opacity: 1;
  visibility: visible;
}

.feedback-content {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  width: 90%;
  max-width: 400px;
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.feedback-modal.open .feedback-content {
  transform: translateY(0);
}

.feedback-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.feedback-close:hover {
  color: var(--color-text);
}

.feedback-content h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.feedback-content p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--space-lg);
}

.feedback-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.feedback-input,
.feedback-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--color-bg-secondary);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.feedback-textarea {
  min-height: 100px;
  resize: vertical;
}

.feedback-input:focus,
.feedback-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.feedback-submit {
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.feedback-submit:hover {
  background: var(--color-primary-dark);
}

.feedback-message {
  font-size: 0.875rem;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  text-align: center;
  margin-top: var(--space-sm);
}

.feedback-message.success {
  background: #ecfdf5;
  color: var(--color-success);
}

.feedback-message.error {
  background: #fef2f2;
  color: var(--color-error);
}

[data-theme="dark"] .feedback-message.success {
  background: rgba(16, 185, 129, 0.1);
}

[data-theme="dark"] .feedback-message.error {
  background: rgba(239, 68, 68, 0.1);
}

/* ============================================
   Rich Post Components
   ============================================ */

/* Post Hero Banner */
.post-hero {
  position: relative;
  padding: var(--space-3xl) var(--space-xl);
  margin: calc(var(--space-xl) * -1) calc(var(--space-xl) * -1) var(--space-2xl);
  text-align: center;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.post-hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
  z-index: 0;
}

.post-hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 80%, rgba(233, 69, 96, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(102, 126, 234, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(118, 75, 162, 0.15) 0%, transparent 60%);
}

.post-hero-content {
  position: relative;
  z-index: 1;
  color: white;
}

.post-hero-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.3), rgba(102, 126, 234, 0.3));
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
}

.post-hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  line-height: 1.2;
  color: #ffffff !important;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.gradient-text {
  background: linear-gradient(135deg, #f97316, #ec4899, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.post-hero-subtitle {
  font-size: 1.25rem;
  color: #e2e8f0 !important;
  margin-bottom: var(--space-lg);
}

.post-hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  backdrop-filter: blur(10px);
}

.stat-pill i {
  color: #60a5fa;
}

/* Fancy Quote */
.fancy-quote {
  position: relative;
  padding: var(--space-xl) var(--space-2xl);
  margin: var(--space-2xl) 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
}

.fancy-quote .quote-icon {
  position: absolute;
  top: var(--space-lg);
  left: var(--space-lg);
  font-size: 1.5rem;
  color: var(--color-primary);
  opacity: 0.5;
}

.fancy-quote p {
  font-size: 1.25rem;
  font-style: italic;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.fancy-quote cite {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Lead Paragraph */
.lead-paragraph {
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

/* Section Heading */
.section-heading {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.75rem;
  font-weight: 700;
  margin: var(--space-3xl) 0 var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-border);
}

.section-heading .emoji {
  font-size: 1.5rem;
}

/* Comparison Cards */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
}

.comparison-card {
  position: relative;
  padding: var(--space-xl);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.comparison-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.comparison-card.cloud::before {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
}

.comparison-card.homelab::before {
  background: linear-gradient(90deg, #8b5cf6, #a78bfa);
}

.comparison-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.comparison-card .card-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.comparison-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.comparison-card h4 {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-lg);
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  color: var(--color-text-secondary);
}

.feature-list li i {
  color: var(--color-success);
}

.card-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Mindset Cards */
.mindset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.mindset-card {
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all var(--transition-fast);
}

.mindset-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.mindset-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.mindset-card h4 {
  margin-bottom: var(--space-sm);
}

.mindset-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 60px;
  margin: var(--space-xl) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-2xl);
}

.timeline-marker {
  position: absolute;
  left: -60px;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
  font-size: 1.25rem;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.timeline-content {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.timeline-content h4 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.timeline-meta {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.timeline-lesson {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  margin-top: var(--space-md);
  font-size: 0.875rem;
}

.timeline-lesson i {
  color: #fbbf24;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Code Showcase */
.code-showcase {
  margin-top: var(--space-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #0d1117;
}

.code-showcase.error {
  border: 1px solid var(--color-error);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-sm) var(--space-md);
  background: #161b22;
  font-size: 0.75rem;
  color: #8b949e;
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot.red {
  background: #ff5f56;
}

.code-dot.yellow {
  background: #ffbd2e;
}

.code-dot.green {
  background: #27ca40;
}

.code-showcase pre {
  margin: 0;
  padding: var(--space-md);
  background: #0d1117;
}

.code-showcase code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.875rem;
  color: #58d68d !important;
  background: transparent !important;
  line-height: 1.6;
}

.code-showcase pre code {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Milestone Grid */
.milestone-grid {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.milestone {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

.milestone i {
  color: var(--color-success);
}

/* Architecture Diagram */
.architecture-diagram {
  margin: var(--space-xl) 0;
}

.arch-path {
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow-x: auto;
}

.arch-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  letter-spacing: 0.1em;
}

.arch-flow {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.arch-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  min-width: 80px;
}

.arch-node.highlight {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid var(--color-primary);
}

.arch-node i {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.arch-node span {
  font-size: 0.75rem;
  text-align: center;
}

.arch-arrow {
  color: var(--color-text-muted);
}

/* Troubleshooting Cards */
.trouble-cards {
  display: grid;
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.trouble-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.trouble-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: rgba(239, 68, 68, 0.1);
  border-bottom: 1px solid var(--color-border);
}

.trouble-icon {
  font-size: 1.25rem;
}

.trouble-header h4 {
  margin: 0;
  font-size: 1rem;
}

.trouble-body {
  padding: var(--space-lg);
}

.trouble-body p {
  margin: 0 0 var(--space-sm);
  font-size: 0.875rem;
}

.trouble-solution {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: rgba(16, 185, 129, 0.1);
  border-top: 1px solid var(--color-border);
}

.solution-badge {
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-success);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.trouble-solution code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Lessons Grid */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.lesson-card {
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.lesson-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.1);
}

.lesson-number {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.lesson-card h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.lesson-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* Roadmap Grid */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
}

.roadmap-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.roadmap-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.1);
}

.roadmap-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

.roadmap-content {
  flex: 1;
}

.roadmap-content h4 {
  margin: 0 0 var(--space-xs);
  font-size: 1.125rem;
}

.roadmap-content p {
  margin: 0 0 var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.roadmap-status {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.roadmap-status.upcoming {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.roadmap-status.planned {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
}

.roadmap-status.idea {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-accent);
}

.roadmap-status.exploring {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

/* Final CTA */
.final-cta {
  margin-top: var(--space-3xl);
  padding: var(--space-2xl);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  border-radius: var(--radius-lg);
  text-align: center;
}

.cta-quote {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.cta-quote i {
  font-size: 2rem;
  color: #fbbf24;
}

.cta-quote p {
  font-size: 1.25rem;
  margin: 0;
  line-height: 1.6;
}

.cta-close {
  color: var(--color-text-secondary);
  margin: 0;
}

/* Image Lightbox */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.lightbox-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(4px);
}

.lightbox-content {
  position: relative;
  max-width: 95vw;
  max-height: 95vh;
  z-index: 10001;
}

.lightbox-image {
  max-width: 95vw;
  max-height: 95vh;
  width: auto !important;
  height: auto !important;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  display: block !important;
  opacity: 1 !important;
  visibility: visible !important;
  background: white;
  padding: 1rem;
}

.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
  font-size: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  line-height: 1;
  padding: 0;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  transform: scale(1.1);
}

/* SVG diagrams: ensure proper sizing and visual treatment */
.article-content img[src$=".svg"] {
  width: 100%;
  height: auto;
  border-radius: 12px;
}

/* Add light background for SVG diagrams in dark mode for better contrast */
[data-theme="dark"] .article-content img[src$=".svg"] {
  background-color: #f8fafc;
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
}

/* Make article images clickable with hover effect */
.article-content img {
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 8px;
}

.article-content img:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Mobile responsive */
@media (max-width: 768px) {
  .lightbox-close {
    top: -40px;
    width: 36px;
    height: 36px;
    font-size: 24px;
  }

  .lightbox-image {
    max-width: 98vw;
    max-height: 98vh;
  }
}
/* Comments Pagination */
.comments-pagination {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.page-btn {
  padding: 0.5rem 1rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
}

.page-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.page-info {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}