/* ============================================
   Modern UI/UX Design System for Tech Blog
   DevSecOps/DevOps/FinOps Focus
   ============================================ */

/* CSS Variables - Design Tokens */
:root {
  /* Colors - Light Theme */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #f1f3f5;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  
  /* Brand Colors */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* Category Colors */
  --color-devsecops: #8b5cf6;
  --color-devops: #10b981;
  --color-finops: #3b82f6;
  --color-security: #ef4444;
  --color-cloud: #06b6d4;
  --color-kubernetes: #326ce5;
  --color-incident: #f59e0b;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Layout */
  --container-max-width: 1200px;
  --container-padding: 1.5rem;
  --header-height: 70px;
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Theme */
[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-border: #334155;
  --color-border-light: #1e293b;
  --color-primary: #60a5fa;
  --color-primary-hover: #93c5fd;
  --color-primary-light: rgba(96, 165, 250, 0.2);
}

[data-theme="dark"] .site-header {
  background-color: rgba(15, 23, 42, 0.95);
  border-bottom-color: var(--color-border);
}

[data-theme="dark"] .card {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-border);
}

[data-theme="dark"] .post-content pre {
  background-color: #1e293b;
  border-color: var(--color-border);
}

[data-theme="dark"] .post-content code {
  background-color: #1e293b;
}

[data-theme="dark"] .post-content blockquote {
  background-color: #1e293b;
  border-left-color: var(--color-primary);
}

/* Focus Styles for Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.9);
  transition: all var(--transition-base);
}

[data-theme="dark"] .site-header {
  background-color: rgba(15, 23, 42, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--spacing-lg);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.site-logo:hover {
  opacity: 0.8;
}

.site-logo svg {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

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

.nav-link {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-devsecops));
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-secondary);
}

.nav-link:hover::after {
  width: calc(100% - var(--spacing-md) * 2);
}

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

.nav-link.active::after {
  width: calc(100% - var(--spacing-md) * 2);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.theme-toggle,
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover,
.mobile-menu-btn:hover {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-primary);
}

.theme-toggle .moon-icon {
  display: none;
}

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

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

.mobile-menu-btn {
  display: none;
}

/* Language Dropdown in Header */
.lang-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
  z-index: 100;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.lang-toggle:hover,
.lang-toggle:focus {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-primary);
  color: var(--color-primary);
  outline: none;
}

.lang-toggle svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  pointer-events: none;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 170px;
  padding: 8px;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
  z-index: 9999;
  pointer-events: none;
}

[data-theme="dark"] .lang-menu {
  background-color: var(--color-bg-secondary);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.lang-dropdown.active .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.lang-dropdown.active .lang-toggle {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  margin: 0;
  background-color: transparent;
  border: none;
  border-radius: 8px;
  color: var(--color-text-primary);
  font-size: 14px;
  font-family: inherit;
  font-weight: 400;
  line-height: 1.4;
  text-align: left;
  text-decoration: none;
  flex-wrap: wrap;
  white-space: normal;
  cursor: pointer;
  transition: background-color 0.15s ease;
  -webkit-appearance: none;
  appearance: none;
}

.lang-option:hover {
  background-color: var(--color-bg-tertiary);
}

.lang-option.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 500;
}

[data-theme="dark"] .lang-option.active {
  background-color: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.lang-option .lang-flag {
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
}

.lang-option span:not(.lang-flag) {
  flex: 1;
}

/* Checkmark for active language */
.lang-option.active::after {
  content: '';
  width: 14px;
  height: 14px;
  margin-left: auto;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563eb' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

[data-theme="dark"] .lang-option.active::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2360a5fa' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

/* Google Translate Link */
.lang-option.google-translate-link {
  margin-top: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 12px;
}

.lang-option.google-translate-link:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-primary);
}

.lang-option.google-translate-link svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.lang-option.google-translate-link::after {
  display: none;
}

/* Translation Status Toast */
.translate-toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-tooltip);
}

.translate-toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.translate-toast.loading {
  background-color: var(--color-info);
  color: white;
  border-color: var(--color-info);
}

.translate-toast.success {
  background-color: var(--color-success);
  color: white;
  border-color: var(--color-success);
}

.translate-toast.error {
  background-color: var(--color-error);
  color: white;
  border-color: var(--color-error);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-primary);
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav .nav-link {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
}

/* Main Content */
.main-content {
  min-height: calc(100vh - var(--header-height) - 200px);
  padding: var(--spacing-2xl) 0;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-3xl) 0;
  margin-bottom: var(--spacing-3xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
  animation: pulse 20s ease-in-out infinite;
  pointer-events: none;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

.hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-devsecops) 50%, var(--color-finops) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradient-shift 3s ease infinite;
  position: relative;
  z-index: 1;
}

@keyframes gradient-shift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: var(--line-height-relaxed);
  position: relative;
  z-index: 1;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.hero-badge {
  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: 9999px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: white;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.hero-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

.hero-badge:hover::before {
  left: 100%;
}

.hero-badge:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-lg);
}

.hero-badge.devsecops {
  background: linear-gradient(135deg, var(--color-devsecops), #7c3aed);
}

.hero-badge.devops {
  background: linear-gradient(135deg, var(--color-devops), #059669);
}

.hero-badge.finops {
  background: linear-gradient(135deg, var(--color-finops), #2563eb);
}

/* Cards */
.card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-devsecops), var(--color-finops));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.card:hover::before {
  transform: scaleX(1);
}

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

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-xl);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-devsecops));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.stat-card:hover::after {
  transform: scaleX(1);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--color-primary), var(--color-devsecops));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
  transition: transform var(--transition-fast);
}

.stat-card:hover .stat-number {
  transform: scale(1.1);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--font-weight-medium);
}

/* Posts List */
.posts-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.post-card {
  display: block;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.post-card-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.post-card:hover .post-card-image img {
  transform: scale(1.05);
}

.post-card-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.post-card:hover .post-card-inner {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
  border-color: var(--color-primary);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  font-size: var(--font-size-xs);
}

.post-card-meta time {
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-medium);
}

.post-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: var(--line-height-tight);
  transition: color var(--transition-fast);
}

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

.post-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.post-card-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

/* Category Badges */
.category-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.category-badge:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.category-badge.security {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-security);
}

.category-badge.devsecops {
  background-color: rgba(139, 92, 246, 0.1);
  color: var(--color-devsecops);
}

.category-badge.devops {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-devops);
}

.category-badge.cloud {
  background-color: rgba(6, 182, 212, 0.1);
  color: var(--color-cloud);
}

.category-badge.kubernetes {
  background-color: rgba(50, 108, 229, 0.1);
  color: var(--color-kubernetes);
}

.category-badge.finops {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--color-finops);
}

.category-badge.incident {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--color-incident);
}

/* Category Grid */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-devsecops), var(--color-finops));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.category-icon {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-bg-secondary));
  color: var(--color-primary);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.category-card:hover .category-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-devsecops));
  color: white;
}

.category-card h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.category-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

.post-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--border-radius-sm);
  margin-top: var(--spacing-sm);
}

/* Category Section */
.category-section {
  scroll-margin-top: calc(var(--header-height) + var(--spacing-md));
  padding-top: var(--spacing-lg);
}

.category-section > div:first-child {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-md);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: white;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
  position: relative;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-light), transparent);
  transition: width var(--transition-base);
  z-index: 0;
}

.btn-secondary:hover::before {
  width: 100%;
}

.btn-secondary:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary span,
.btn-secondary {
  position: relative;
  z-index: 1;
}

/* Section Headers */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border);
}

.section-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-devsecops));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.recent-posts-section,
.categories-section {
  margin-top: var(--spacing-2xl);
}

.categories-section h2 {
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  background: linear-gradient(135deg, var(--color-primary), var(--color-devsecops));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border);
}

/* Search */
.search-container {
  position: relative;
  max-width: 600px;
  margin: 0 auto var(--spacing-3xl);
}

.search-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3.5rem;
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), var(--shadow-md);
  transform: translateY(-1px);
}

.search-input::placeholder {
  color: var(--color-text-tertiary);
}

.search-icon {
  position: absolute;
  left: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--color-text-tertiary);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.search-input:focus + .search-icon,
.search-container:focus-within .search-icon {
  color: var(--color-primary);
}

/* Search Results Dropdown */
.search-results {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.5rem;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  max-height: 400px;
  overflow-y: auto;
  z-index: 1000;
}

.search-result-item {
  display: block;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background-color: var(--color-bg-secondary);
}

.search-result-item.no-results {
  text-align: center;
  color: var(--color-text-secondary);
  cursor: default;
}

.search-result-title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  margin-bottom: 0.25rem;
  line-height: 1.4;
}

.search-result-title mark {
  background: linear-gradient(120deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
  color: var(--color-primary);
  padding: 0.1em 0.2em;
  border-radius: 2px;
}

.search-result-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: 0.25rem;
}

.search-result-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Dark mode search results */
[data-theme="dark"] .search-results {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
}

[data-theme="dark"] .search-result-item:hover {
  background-color: var(--color-bg-tertiary);
}

[data-theme="dark"] .search-result-title mark {
  background: linear-gradient(120deg, rgba(99, 102, 241, 0.3) 0%, rgba(139, 92, 246, 0.3) 100%);
  color: #818cf8;
}

/* Footer */
.site-footer {
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-3xl) 0;
  border-top: 2px solid var(--color-border);
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

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

.footer-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  border-radius: var(--border-radius-md);
  background-color: var(--color-bg-tertiary);
}

.footer-links a:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.footer-copyright {
  margin: 0;
  color: var(--color-text-tertiary);
}

/* Post Article */
.post-article {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl) 0;
}

.post-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.post-category {
  margin-bottom: var(--spacing-md);
}

.post-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-text-tertiary);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* Language Tools - Translation Feature */
.language-tools {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px dashed var(--color-border);
}

.language-selector {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.lang-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-devsecops) 100%);
  border-color: transparent;
  color: white;
}

.lang-btn .lang-flag {
  font-size: 1.1em;
}

.lang-btn .lang-name {
  display: none;
}

@media (min-width: 480px) {
  .lang-btn .lang-name {
    display: inline;
  }
}

.translate-status {
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  min-height: 1.5rem;
}

.translate-status.loading {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.translate-status.success {
  color: #16a34a;
  background: #dcfce7;
}

.translate-status.error {
  color: #dc2626;
  background: #fee2e2;
}

[data-theme="dark"] .translate-status.loading {
  background: rgba(99, 102, 241, 0.2);
}

[data-theme="dark"] .translate-status.success {
  background: rgba(22, 163, 74, 0.2);
  color: #86efac;
}

[data-theme="dark"] .translate-status.error {
  background: rgba(220, 38, 38, 0.2);
  color: #fca5a5;
}

/* Google Translate Alternative Button */
.translate-external {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.translate-external:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.translate-external svg {
  width: 16px;
  height: 16px;
}

.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.tag:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Post Content */
.post-content {
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
}

.post-content p {
  margin-bottom: var(--spacing-lg);
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.post-content h1 {
  font-size: var(--font-size-3xl);
}

.post-content h2 {
  font-size: var(--font-size-2xl);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
  margin-top: var(--spacing-2xl);
}

.post-content h3 {
  font-size: var(--font-size-xl);
}

.post-content h4 {
  font-size: var(--font-size-lg);
}

.post-content ul,
.post-content ol {
  margin-left: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.post-content li {
  margin-bottom: var(--spacing-sm);
}

.post-content code {
  background-color: var(--color-bg-secondary);
  padding: 0.2em 0.4em;
  border-radius: var(--border-radius-sm);
  font-size: 0.9em;
  font-family: var(--font-family-mono);
  color: var(--color-text-primary);
}

.post-content pre {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  border: 1px solid var(--color-border);
}

.post-content pre code {
  background-color: transparent;
  padding: 0;
  color: var(--color-text-primary);
}

.post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  color: var(--color-text-secondary);
  font-style: italic;
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
}

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

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

/* Dark mode link improvements */
[data-theme="dark"] .post-content a {
  color: #60a5fa;
}

[data-theme="dark"] .post-content a:hover {
  color: #93c5fd;
}

/* General links in dark mode */
[data-theme="dark"] a {
  color: #60a5fa;
}

[data-theme="dark"] a:hover {
  color: #93c5fd;
}

/* Discussion page links */
[data-theme="dark"] .discussion-page a {
  color: #60a5fa;
}

[data-theme="dark"] .discussion-page a:hover {
  color: #93c5fd;
}

/* Card links in dark mode */
[data-theme="dark"] .card a {
  color: #60a5fa;
}

[data-theme="dark"] .card a:hover {
  color: #93c5fd;
}

/* All links in dark mode - ensure visibility */
[data-theme="dark"] a:not(.btn):not(.nav-link):not(.tag):not(.post-card) {
  color: #60a5fa;
}

[data-theme="dark"] a:not(.btn):not(.nav-link):not(.tag):not(.post-card):hover {
  color: #93c5fd;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  margin: var(--spacing-lg) auto;
  display: block;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.post-content img:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.post-content img.post-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  margin: var(--spacing-lg) auto;
  display: block;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.post-content img.post-image:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

/* p 태그 안의 이미지도 제대로 표시되도록 */
.post-content p img {
  display: block;
  margin: var(--spacing-lg) auto;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  overflow-x: auto;
  display: block;
}

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

.post-content table th {
  background-color: var(--color-bg-secondary);
  font-weight: var(--font-weight-semibold);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-2xl) 0;
}

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

.original-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.original-link svg {
  width: 14px;
  height: 14px;
}

/* Related Posts */
.related-posts {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.related-posts h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

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

.related-item {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: var(--spacing-lg);
}

.related-item h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.related-item:hover h4 {
  color: var(--color-primary);
}

.related-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

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

/* Share Buttons */
.share-buttons {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.share-buttons span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.share-buttons a,
.share-buttons button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.share-buttons a:hover,
.share-buttons button:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

/* Giscus Comments */
.giscus,
.comments-section {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
  width: 100%;
}

.comments-section h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  margin-top: 0;
}

/* Giscus 위젯 스타일링 */
.giscus-frame {
  width: 100%;
  border: none;
  min-height: 400px;
}

/* Giscus 컨테이너 개선 */
.giscus {
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
}

/* Dark mode giscus adjustments */
[data-theme="dark"] .giscus {
  background-color: var(--color-bg-secondary);
}

/* Discussion Page */
.discussion-page {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-xl) 0;
}

.discussion-page h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.discussion-page section {
  margin-bottom: var(--spacing-3xl);
}

.discussion-page .card {
  transition: all var(--transition-base);
}

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

.discussion-page ol,
.discussion-page ul {
  margin-left: var(--spacing-xl);
  padding-left: var(--spacing-md);
}

.discussion-page li {
  margin-bottom: var(--spacing-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}

.discussion-page li strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* Alert Styles */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border-left: 4px solid;
  margin-bottom: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
}

.alert.info {
  border-left-color: var(--color-info);
  background-color: rgba(59, 130, 246, 0.1);
}

.alert.warning {
  border-left-color: var(--color-warning);
  background-color: rgba(245, 158, 11, 0.1);
}

.alert.error {
  border-left-color: var(--color-error);
  background-color: rgba(239, 68, 68, 0.1);
}

.alert.success {
  border-left-color: var(--color-success);
  background-color: rgba(16, 185, 129, 0.1);
}

.alert p {
  margin: 0;
  color: var(--color-text-primary);
}

.alert strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

/* Dark mode alert adjustments */
[data-theme="dark"] .alert.info {
  background-color: rgba(59, 130, 246, 0.15);
}

[data-theme="dark"] .alert.warning {
  background-color: rgba(245, 158, 11, 0.15);
}

[data-theme="dark"] .alert.error {
  background-color: rgba(239, 68, 68, 0.15);
}

[data-theme="dark"] .alert.success {
  background-color: rgba(16, 185, 129, 0.15);
}

/* Discussion Page Specific Styles */
.discussion-category-card {
  padding: var(--spacing-lg);
  display: block;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

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

.discussion-category-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.discussion-category-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.discussion-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}

.discussion-icon.icon-general {
  color: var(--color-primary);
}

.discussion-icon.icon-qa {
  color: var(--color-success);
}

.discussion-icon.icon-ideas {
  color: var(--color-warning);
}

.discussion-icon.icon-show {
  color: var(--color-devsecops);
}

.discussion-category-desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
  line-height: var(--line-height-relaxed);
}

.discussion-card {
  padding: var(--spacing-xl);
}

.discussion-list {
  margin: 0;
  padding-left: var(--spacing-xl);
  line-height: var(--line-height-relaxed);
}

.discussion-list li {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.discussion-list li strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.discussion-cta {
  text-align: center;
  margin-top: var(--spacing-3xl);
}

.btn-large {
  font-size: var(--font-size-lg);
  padding: var(--spacing-md) var(--spacing-2xl);
}

.btn-icon {
  margin-right: var(--spacing-sm);
  vertical-align: middle;
}

/* Responsive Design */
@media (min-width: 769px) and (max-width: 1024px) {
  .posts-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }

  .site-nav {
    display: none;
  }

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

  .hero {
    padding: var(--spacing-2xl) 0;
  }

  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .posts-list,
  .category-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
  }

  .stat-card {
    padding: var(--spacing-lg);
  }

  .stat-number {
    font-size: var(--font-size-2xl);
  }

  .post-article {
    padding: var(--spacing-lg) 0;
  }

  .post-title {
    font-size: var(--font-size-2xl);
  }

  .post-meta {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .discussion-page {
    padding: var(--spacing-md) 0;
  }

  .discussion-category-card {
    padding: var(--spacing-md);
  }

  .discussion-card {
    padding: var(--spacing-lg);
  }

  .discussion-list {
    padding-left: var(--spacing-lg);
  }

  .comments-section {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
  }

  .comments-section h3 {
    font-size: var(--font-size-xl);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .hero-badges {
    flex-direction: column;
    align-items: center;
  }
}

/* Accessibility */

/* Skip Link - 키보드 사용자를 위한 본문 건너뛰기 링크 */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-decoration: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transition: top 0.2s ease-in-out;
}

.skip-link:focus {
  top: var(--spacing-md);
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus Styles */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Animations */
@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ============================================
   AI Summary Section Styles
   ============================================ */

/* Hide the "📋 포스팅 요약" header when it appears at the start */
.post-content > h2:first-child,
.post-content > h2#-포스팅-요약 {
  display: none;
}

/* AI Summary Box - first blockquote를 카드 스타일로 변환 */
.post-content > h2:first-child + blockquote,
.post-content > blockquote:first-child,
.ai-summary {
  position: relative;
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  padding-top: calc(var(--spacing-xl) + 28px);
  margin: 0 0 var(--spacing-2xl) 0;
  font-style: normal;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* AI Summary Header Badge */
.post-content > h2:first-child + blockquote::before,
.post-content > blockquote:first-child::before,
.ai-summary::before {
  content: "📋 AI 요약";
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  position: absolute;
  top: 0;
  left: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-devsecops));
  color: white;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 0 0 var(--border-radius-md) 0;
  letter-spacing: 0.03em;
}

/* Summary content styling */
.post-content > h2:first-child + blockquote p,
.post-content > blockquote:first-child p,
.ai-summary p {
  margin: 0 0 var(--spacing-sm) 0;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}

/* Summary field styling - 제목, 카테고리 등의 라벨 */
.post-content > h2:first-child + blockquote strong,
.post-content > blockquote:first-child strong,
.ai-summary strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  display: inline-block;
  min-width: 70px;
  margin-right: var(--spacing-xs);
}

/* Summary divider - hr tag */
.post-content > h2:first-child + blockquote hr,
.post-content > blockquote:first-child hr,
.ai-summary hr {
  border: none;
  border-top: 1px dashed var(--color-border);
  margin: var(--spacing-md) 0;
}

/* Summary footer note (italic text at the end) */
.post-content > h2:first-child + blockquote > p:last-child em,
.post-content > blockquote:first-child > p:last-child em,
.ai-summary > p:last-child em {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px dashed var(--color-border);
  font-style: italic;
}

/* Dark mode AI Summary */
[data-theme="dark"] .post-content > h2:first-child + blockquote,
[data-theme="dark"] .post-content > blockquote:first-child,
[data-theme="dark"] .ai-summary {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(51, 65, 85, 0.9) 100%);
  border-color: var(--color-border);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .post-content > h2:first-child + blockquote strong,
[data-theme="dark"] .post-content > blockquote:first-child strong,
[data-theme="dark"] .ai-summary strong {
  color: #60a5fa;
}

/* Ensure normal blockquotes inside content don't get AI summary styling */
.post-content > p + blockquote,
.post-content > h3 + blockquote,
.post-content > h4 + blockquote,
.post-content > ul + blockquote,
.post-content > ol + blockquote,
.post-content > pre + blockquote,
.post-content > table + blockquote {
  position: static;
  background: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  font-style: italic;
  box-shadow: none;
}

.post-content > p + blockquote::before,
.post-content > h3 + blockquote::before,
.post-content > h4 + blockquote::before,
.post-content > ul + blockquote::before,
.post-content > ol + blockquote::before,
.post-content > pre + blockquote::before,
.post-content > table + blockquote::before {
  display: none;
}

/* AI Summary Grid Layout for metadata */
.ai-summary-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-sm) var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.ai-summary-label {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  white-space: nowrap;
}

.ai-summary-value {
  color: var(--color-text-primary);
}

/* Tags in AI Summary */
.ai-summary-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.ai-summary-tag {
  display: inline-block;
  padding: 2px var(--spacing-sm);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

[data-theme="dark"] .ai-summary-tag {
  background-color: rgba(96, 165, 250, 0.2);
  color: #60a5fa;
}

/* Responsive AI Summary */
@media (max-width: 768px) {
  .post-content > h2:first-child + blockquote,
  .post-content > blockquote:first-child,
  .ai-summary {
    padding: var(--spacing-lg);
    padding-top: calc(var(--spacing-lg) + 24px);
    margin-bottom: var(--spacing-xl);
  }

  .post-content > h2:first-child + blockquote::before,
  .post-content > blockquote:first-child::before,
  .ai-summary::before {
    font-size: 11px;
    padding: var(--spacing-xs) var(--spacing-md);
  }

  .ai-summary-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
  }

  .ai-summary-label {
    margin-top: var(--spacing-sm);
  }
}

/* ============================================
   AI Summary Card - New Design
   ============================================ */

.ai-summary-card {
  background: linear-gradient(145deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 2.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
}

.ai-summary-header {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.ai-badge::before {
  content: "✨";
}

.ai-summary-content {
  padding: 1.5rem;
}

.summary-row {
  display: flex;
  align-items: flex-start;
  padding: 0.625rem 0;
  border-bottom: 1px solid #e2e8f0;
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-row.highlights {
  flex-direction: column;
  gap: 0.5rem;
}

.summary-label {
  flex-shrink: 0;
  width: 90px;
  font-weight: 600;
  color: #6366f1;
  font-size: 0.875rem;
}

.summary-value {
  flex: 1;
  color: #334155;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.summary-value.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.summary-value .tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
  color: #6366f1;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.category-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-right: 0.375rem;
}

.category-tag.security {
  background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
  color: #dc2626;
}

.category-tag.cloud {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  color: #2563eb;
}

.category-tag.devops,
.category-tag.devsecops {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  color: #16a34a;
}

.summary-list {
  margin: 0;
  padding-left: 1.25rem;
  list-style: none;
}

.summary-list li {
  position: relative;
  padding: 0.25rem 0;
  color: #475569;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.summary-list li::before {
  content: "▸";
  position: absolute;
  left: -1.25rem;
  color: #6366f1;
  font-weight: bold;
}

.ai-summary-footer {
  padding: 0.875rem 1.5rem;
  background: #f1f5f9;
  border-top: 1px dashed #cbd5e1;
  font-size: 0.8125rem;
  color: #64748b;
  font-style: italic;
  text-align: center;
}

/* Dark mode styles for AI Summary Card */
[data-theme="dark"] .ai-summary-card {
  background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
  border-color: #334155;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .ai-summary-header {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

[data-theme="dark"] .summary-row {
  border-bottom-color: #334155;
}

[data-theme="dark"] .summary-label {
  color: #818cf8;
}

[data-theme="dark"] .summary-value {
  color: #e2e8f0;
}

[data-theme="dark"] .summary-value .tag {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
  color: #a5b4fc;
}

[data-theme="dark"] .category-tag.security {
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.15) 0%, rgba(239, 68, 68, 0.15) 100%);
  color: #fca5a5;
}

[data-theme="dark"] .category-tag.cloud {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
  color: #93c5fd;
}

[data-theme="dark"] .category-tag.devops,
[data-theme="dark"] .category-tag.devsecops {
  background: linear-gradient(135deg, rgba(22, 163, 74, 0.15) 0%, rgba(34, 197, 94, 0.15) 100%);
  color: #86efac;
}

[data-theme="dark"] .summary-list li {
  color: #cbd5e1;
}

[data-theme="dark"] .summary-list li::before {
  color: #818cf8;
}

[data-theme="dark"] .ai-summary-footer {
  background: rgba(15, 23, 42, 0.5);
  border-top-color: #334155;
  color: #94a3b8;
}

/* Responsive AI Summary Card */
@media (max-width: 768px) {
  .ai-summary-card {
    margin-bottom: 1.5rem;
    border-radius: 12px;
  }

  .ai-summary-header {
    padding: 0.625rem 1rem;
  }

  .ai-badge {
    font-size: 0.8125rem;
  }

  .ai-summary-content {
    padding: 1rem;
  }

  .summary-row {
    flex-direction: column;
    gap: 0.375rem;
    padding: 0.5rem 0;
  }

  .summary-label {
    width: 100%;
    font-size: 0.8125rem;
  }

  .summary-value {
    font-size: 0.875rem;
  }

  .ai-summary-footer {
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
  }
}

/* Giscus Comments Enhancement */
.giscus-wrapper {
  position: relative;
  overflow: hidden;
}

.giscus-loading.hidden {
  display: none;
}

/* Giscus iframe 스타일 개선 */
.giscus iframe {
  border: none;
  width: 100%;
  min-height: 400px;
}

/* 다크 모드에서 giscus 컨테이너 개선 */
[data-theme="dark"] .giscus-wrapper {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-border);
}

[data-theme="dark"] .giscus-wrapper:hover {
  border-color: var(--color-primary);
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .nav-actions,
  .search-container,
  .giscus,
  .share-buttons,
  .reading-progress {
    display: none;
  }

  .main-content {
    padding: 0;
  }

  .post-content > blockquote:first-of-type,
  .ai-summary {
    border: 1px solid #ccc;
    box-shadow: none;
  }
}

/* ============================================
   Table of Contents - Modern Card Grid Design
   ============================================ */

.toc-container {
  margin: var(--spacing-xl) 0 var(--spacing-2xl);
}

.toc-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
  border-bottom: 1px solid var(--color-border);
}

.toc-title-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.toc-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--border-radius-md);
  color: white;
}

.toc-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.toc-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  background: var(--color-bg-tertiary);
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: var(--spacing-xs);
}

.toc-expand-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.toc-expand-btn .chevron-icon {
  transition: transform var(--transition-base);
}

.toc-expand-btn.expanded .chevron-icon {
  transform: rotate(180deg);
}

/* TOC Grid Layout */
.toc-nav {
  padding: var(--spacing-md);
}

.toc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

@media (max-width: 640px) {
  .toc-grid {
    grid-template-columns: 1fr;
  }
}

/* TOC Card Items */
.toc-card-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid transparent;
  border-radius: var(--border-radius-md);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.toc-card-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-primary);
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.toc-card-item:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.toc-card-item:hover::before {
  transform: scaleY(1);
}

.toc-card-item.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.toc-card-item.active::before {
  transform: scaleY(1);
}

.toc-card-item.toc-hidden {
  display: none;
}

.toc-item-number {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.toc-card-item:hover .toc-item-number {
  background: var(--color-primary-hover);
  transform: scale(1.1);
}

.toc-item-text {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.toc-item-arrow {
  color: var(--color-text-tertiary);
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition-base);
}

.toc-card-item:hover .toc-item-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--color-primary);
}

/* TOC Sublist (h3 items) */
.toc-sublist {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px dashed var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.toc-sub-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--color-bg-tertiary);
  border-radius: 20px;
  text-decoration: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  transition: all var(--transition-base);
}

.toc-sub-item:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.toc-sub-bullet {
  width: 4px;
  height: 4px;
  background: var(--color-text-tertiary);
  border-radius: 50%;
}

.toc-sub-item:hover .toc-sub-bullet {
  background: var(--color-primary);
}

/* Dark Mode TOC */
[data-theme="dark"] .toc-card {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .toc-header {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(51, 65, 85, 0.9) 100%);
}

[data-theme="dark"] .toc-card-item {
  background: rgba(30, 41, 59, 0.6);
}

[data-theme="dark"] .toc-card-item:hover {
  background: rgba(51, 65, 85, 0.8);
  box-shadow: 0 4px 12px rgba(96, 165, 250, 0.15);
}

[data-theme="dark"] .toc-card-item.active {
  background: rgba(37, 99, 235, 0.2);
}

[data-theme="dark"] .toc-item-number {
  background: #3b82f6;
}

[data-theme="dark"] .toc-sub-item {
  background: rgba(51, 65, 85, 0.6);
}

[data-theme="dark"] .toc-sub-item:hover {
  background: rgba(37, 99, 235, 0.2);
  color: #60a5fa;
}

/* Mobile responsive TOC */
@media (max-width: 768px) {
  .toc-header {
    padding: var(--spacing-sm) var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .toc-title-section {
    flex: 1;
    min-width: 0;
  }

  .toc-icon {
    width: 32px;
    height: 32px;
  }

  .toc-icon svg {
    width: 16px;
    height: 16px;
  }

  .toc-title {
    font-size: var(--font-size-base);
  }

  .toc-count {
    display: none;
  }

  .toc-expand-btn {
    padding: 6px 10px;
    font-size: var(--font-size-xs);
  }

  .toc-nav {
    padding: var(--spacing-sm);
  }

  .toc-card-item {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .toc-item-number {
    min-width: 24px;
    height: 24px;
    font-size: 11px;
  }

  .toc-item-text {
    font-size: var(--font-size-xs);
  }

  .toc-item-arrow {
    display: none;
  }
}

/* ============================================
   Image Lightbox
   ============================================ */
.image-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.image-lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1;
}

.lightbox-content {
  position: relative;
  max-width: 95vw;
  max-height: 95vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2;
  width: 100%;
  height: 100%;
}

.lightbox-image {
  max-width: 90vw;
  max-height: 80vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transition: transform 0.2s ease, opacity 0.3s ease;
  cursor: grab;
  display: block;
  opacity: 1;
  z-index: 2;
  position: relative;
}

.lightbox-image:active {
  cursor: grabbing;
}

.lightbox-caption {
  margin-top: 16px;
  color: #ffffff;
  font-size: 14px;
  text-align: center;
  max-width: 80%;
  opacity: 0.9;
}

.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  color: #ffffff;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.lightbox-controls {
  position: absolute;
  bottom: -60px;
  display: flex;
  gap: 12px;
  background: rgba(255, 255, 255, 0.1);
  padding: 8px 16px;
  border-radius: 30px;
  backdrop-filter: blur(10px);
}

.lightbox-controls button {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  color: #ffffff;
}

.lightbox-controls button:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}

.lightbox-controls button:active {
  transform: scale(0.95);
}

/* Clickable image hover effect */
.clickable-image,
.post-content img,
.post-image img {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.clickable-image:hover,
.post-content img:hover,
.post-image img:hover {
  transform: scale(1.02);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* Zoom indicator on hover */
.post-image {
  position: relative;
}

.post-image::after {
  content: '';
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3Cline x1='11' y1='8' x2='11' y2='14'/%3E%3Cline x1='8' y1='11' x2='14' y2='11'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 18px;
}

.post-image:hover::after {
  opacity: 1;
}

/* Mobile adjustments for lightbox */
@media (max-width: 768px) {
  .lightbox-image {
    max-width: 95vw;
    max-height: 70vh;
  }

  .lightbox-close {
    top: -45px;
    right: 5px;
    width: 40px;
    height: 40px;
  }

  .lightbox-controls {
    bottom: -55px;
    gap: 8px;
    padding: 6px 12px;
  }

  .lightbox-controls button {
    width: 36px;
    height: 36px;
  }

  .lightbox-caption {
    font-size: 12px;
    max-width: 90%;
  }
}