/* ============================================
   PLXT Article Viewer - Cyberpunk Premium Theme
   ============================================ */

/* ========== CSS Variables ========== */
:root {
  /* Colors */
  --bg-color: #030305;
  --bg-secondary: #0a0a0f;
  --bg-tertiary: #12121a;
  --bg-card: rgba(15, 15, 20, 0.85);
  --text-main: #f0f0f5;
  --text-muted: #8888a0;
  --text-secondary: #b8b8d0;
  --primary: #00eaff;
  --primary-dim: rgba(0, 234, 255, 0.12);
  --primary-glow: rgba(0, 234, 255, 0.4);
  --secondary: #ff00c8;
  --secondary-dim: rgba(255, 0, 200, 0.12);
  --secondary-glow: rgba(255, 0, 200, 0.4);
  --accent: #7000ff;
  --accent-dim: rgba(112, 0, 255, 0.12);
  --accent-glow: rgba(112, 0, 255, 0.4);
  --success: #00ff88;
  --warning: #ffaa00;
  --error: #ff4466;
  
  /* Glass */
  --glass-bg: rgba(20, 20, 30, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.05);
  
  /* Code Theme - Cyberpunk */
  --code-bg: #0a0a12;
  --code-bg-alt: #0d0d18;
  --code-border: rgba(0, 234, 255, 0.15);
  --code-header-bg: linear-gradient(135deg, rgba(0, 234, 255, 0.1), rgba(112, 0, 255, 0.1));
  --code-keyword: #ff00c8;
  --code-string: #00ff88;
  --code-number: #ffaa00;
  --code-comment: #6a6a8a;
  --code-function: #00eaff;
  --code-variable: #f0f0f5;
  --code-operator: #7000ff;
  --code-punctuation: #9494a8;
  --code-class: #ff6b9d;
  --code-property: #88ccff;
  
  /* Layout */
  --nav-height: 70px;
  --sidebar-width: 280px;
  --content-max-width: 860px;
  --border-radius-xs: 6px;
  --border-radius-sm: 10px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --border-radius-xl: 32px;
  
  /* Typography */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  
  /* Transitions */
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows */
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow-primary: 0 0 30px var(--primary-glow);
  --shadow-glow-secondary: 0 0 30px var(--secondary-glow);
  --shadow-glow-accent: 0 0 30px var(--accent-glow);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: calc(var(--nav-height) + 30px);
}

body {
  font-family: var(--font-sans);
  background: var(--bg-color);
  color: var(--text-main);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========== Background Effects ========== */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 234, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 234, 255, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -3;
  animation: gridPulse 10s ease-in-out infinite, gridMove 60s linear infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

.vignette {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 100% 80% at 50% 20%, transparent 0%, var(--bg-color) 70%);
  pointer-events: none;
  z-index: -2;
}

.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.bg-orbs::before,
.bg-orbs::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.2;
  animation: orbFloat 25s ease-in-out infinite;
}

.bg-orbs::before {
  background: var(--primary);
  top: -150px;
  left: -150px;
  animation-delay: 0s;
}

.bg-orbs::after {
  background: var(--secondary);
  bottom: -150px;
  right: -150px;
  animation-delay: -12.5s;
}

@keyframes orbFloat {
  0%, 100% { 
    transform: translate(0, 0) scale(1) rotate(0deg); 
    opacity: 0.2;
  }
  25% { 
    transform: translate(80px, 60px) scale(1.15) rotate(90deg); 
    opacity: 0.25;
  }
  50% { 
    transform: translate(40px, 120px) scale(0.9) rotate(180deg); 
    opacity: 0.15;
  }
  75% { 
    transform: translate(-60px, 80px) scale(1.1) rotate(270deg); 
    opacity: 0.2;
  }
}

/* ========== Reading Progress Bar ========== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent), var(--primary));
  background-size: 300% 100%;
  z-index: 1000;
  transition: width 0.15s ease-out;
  animation: progressGradient 3s linear infinite;
}

@keyframes progressGradient {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

/* ========== Navigation ========== */
.article-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 60px);
  background: rgba(3, 3, 5, 0.7);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  z-index: 100;
  transform: translateY(0);
  transition: var(--transition-normal);
}

.article-nav::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
  opacity: 0.3;
}

.article-nav.hidden {
  transform: translateY(-100%);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.nav-logo img {
  height: 36px;
  width: auto;
  transition: var(--transition-normal);
}

.nav-logo:hover img {
  filter: drop-shadow(0 0 16px var(--primary));
  transform: scale(1.08) rotate(-2deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 10px 18px;
  border-radius: var(--border-radius-lg);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-links a::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--primary-dim), var(--accent-dim));
  opacity: 0;
  transition: var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 1px;
  transform: translateX(-50%);
  transition: var(--transition-fast);
}

.nav-links a span {
  position: relative;
  z-index: 1;
}

.nav-links a:hover {
  color: var(--text-main);
}

.nav-links a:hover::before {
  opacity: 1;
}

.nav-links a:hover::after {
  width: 60%;
}

.nav-links a.active {
  color: var(--primary);
}

.nav-links a.active::after {
  width: 60%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 46px;
  height: 46px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.nav-toggle:hover {
  background: var(--primary-dim);
  border-color: var(--primary);
  transform: scale(1.05);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-main);
  border-radius: 1px;
  transition: var(--transition-fast);
}

.nav-toggle span:nth-child(1) { transform: translateY(-6px); }
.nav-toggle span:nth-child(3) { transform: translateY(6px); }

.nav-toggle.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow-primary);
}

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

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: blur(30px);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 99;
  border-bottom: 1px solid var(--glass-border);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.mobile-menu::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
  opacity: 0.3;
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 1rem;
  padding: 16px 20px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.mobile-menu a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: 0 2px 2px 0;
  transform: scaleY(0);
  transition: var(--transition-fast);
}

.mobile-menu a:hover {
  color: var(--text-main);
  background: var(--glass-highlight);
  padding-left: 28px;
}

.mobile-menu a:hover::before {
  transform: scaleY(1);
}

/* ========== Article Container ========== */
.article-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + 50px) clamp(20px, 5vw, 40px) 100px;
  min-height: 100vh;
}

/* ========== Loading State ========== */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 28px;
}

.loading-spinner {
  width: 70px;
  height: 70px;
  position: relative;
}

.loading-spinner::before,
.loading-spinner::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid transparent;
}

.loading-spinner::before {
  border-top-color: var(--primary);
  border-right-color: var(--primary);
  animation: spin 1s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}

.loading-spinner::after {
  border-bottom-color: var(--secondary);
  border-left-color: var(--secondary);
  animation: spin 1.5s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite reverse;
  inset: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-state p {
  color: var(--text-muted);
  font-size: 1rem;
  animation: textPulse 2s ease-in-out infinite;
}

@keyframes textPulse {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.5; transform: translateY(-3px); }
}

/* ========== Error State ========== */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  gap: 24px;
  padding: 40px 20px;
}

.error-icon {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--error), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  font-weight: bold;
  box-shadow: var(--shadow-glow-secondary);
  animation: errorPulse 2s ease-in-out infinite, shake 0.6s ease-out;
}

@keyframes errorPulse {
  0%, 100% { box-shadow: 0 0 30px rgba(255, 68, 102, 0.4); }
  50% { box-shadow: 0 0 50px rgba(255, 68, 102, 0.6); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0) rotate(0deg); }
  20% { transform: translateX(-10px) rotate(-5deg); }
  40% { transform: translateX(10px) rotate(5deg); }
  60% { transform: translateX(-6px) rotate(-3deg); }
  80% { transform: translateX(6px) rotate(3deg); }
}

.error-state h2 {
  font-size: 1.8rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--text-main), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.error-state p {
  color: var(--text-muted);
  max-width: 400px;
}

.btn-back {
  margin-top: 16px;
  padding: 16px 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--bg-color);
  text-decoration: none;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.btn-back::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  opacity: 0;
  transition: var(--transition-normal);
}

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

.btn-back:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-primary);
}

.btn-back:hover::before {
  opacity: 1;
}

/* ========== Article Content Animation ========== */
.article-content {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

/* ========== Article Header ========== */
.article-header {
  margin-bottom: 50px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--glass-border);
  animation: slideDown 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
  position: relative;
}

.article-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 1px;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.article-category {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--bg-color);
  padding: 7px 18px;
  border-radius: var(--border-radius-lg);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.article-category::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  opacity: 0;
  transition: var(--transition-normal);
}

.article-category:hover::before {
  opacity: 1;
}

.article-category span {
  position: relative;
  z-index: 1;
}

.article-date,
.article-reading-time {
  color: var(--text-muted);
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--glass-bg);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--glass-border);
}

.article-date::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary-glow);
}

.article-title {
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-main) 0%, var(--primary) 40%, var(--secondary) 80%, var(--accent) 100%);
  background-size: 300% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: titleGradient 6s ease-in-out infinite;
}

@keyframes titleGradient {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.article-author {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--bg-color);
  font-size: 1rem;
  box-shadow: var(--shadow-glow-primary);
  transition: var(--transition-normal);
}

.author-avatar:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-glow-secondary);
}

/* ========== Table of Contents ========== */
.article-toc {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 22px 26px;
  margin-bottom: 50px;
  backdrop-filter: blur(16px);
  animation: slideDown 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.3s both;
  position: relative;
  overflow: hidden;
}

.article-toc::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.toc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--glass-border);
}

.toc-header span {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-header span::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 2px;
  transform: rotate(45deg);
}

.toc-toggle {
  background: var(--glass-highlight);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 8px 14px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.toc-toggle:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-dim);
}

.toc-content {
  display: block;
  max-height: 450px;
  overflow-y: auto;
  transition: var(--transition-normal);
}

.toc-content.hidden {
  max-height: 0;
  overflow: hidden;
}

.toc-content ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-content li {
  margin: 3px 0;
}

.toc-content a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--border-radius-sm);
  position: relative;
}

.toc-content a::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.4;
  transition: var(--transition-fast);
}

.toc-content a:hover {
  color: var(--primary);
  background: var(--primary-dim);
  padding-left: 20px;
}

.toc-content a:hover::before {
  opacity: 1;
  transform: scale(1.3);
  box-shadow: 0 0 8px var(--primary-glow);
}

.toc-content a.active {
  color: var(--primary);
  background: var(--primary-dim);
}

.toc-content a.active::before {
  opacity: 1;
  width: 5px;
  height: 18px;
  border-radius: 3px;
  transform: scaleY(1);
  box-shadow: 0 0 10px var(--primary-glow);
}

.toc-content ul ul {
  margin-left: 22px;
  border-left: 2px solid var(--glass-border);
  padding-left: 0;
}

/* ========== Markdown Body ========== */
.markdown-body {
  color: var(--text-secondary);
  font-size: 1.05rem;
  animation: slideDown 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
}

/* Headings */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  color: var(--text-main);
  margin: 2.5em 0 1em;
  font-weight: 600;
  line-height: 1.3;
  position: relative;
  scroll-margin-top: calc(var(--nav-height) + 30px);
}

.markdown-body h1 {
  font-size: 2rem;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--glass-border);
}

.markdown-body h2 {
  font-size: 1.6rem;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--glass-border);
  padding-left: 18px;
}

.markdown-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 4px;
  height: calc(100% - 20px);
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: 2px;
  box-shadow: 0 0 12px var(--primary-glow);
}

.markdown-body h3 { 
  font-size: 1.35rem; 
  padding-left: 14px;
  border-left: 3px solid var(--accent);
}

.markdown-body h4 { font-size: 1.15rem; }

/* Paragraphs */
.markdown-body p {
  margin: 1.3em 0;
}

/* Links */
.markdown-body a {
  color: var(--primary);
  text-decoration: none;
  position: relative;
  transition: var(--transition-fast);
  padding: 0 2px;
}

.markdown-body a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.markdown-body a:hover {
  color: var(--secondary);
  text-shadow: 0 0 8px var(--primary-glow);
}

.markdown-body a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Bold & Italic */
.markdown-body strong {
  color: var(--text-main);
  font-weight: 600;
}

.markdown-body em {
  color: var(--secondary);
  font-style: normal;
  background: linear-gradient(135deg, var(--secondary-dim), var(--accent-dim));
  padding: 2px 8px;
  border-radius: var(--border-radius-xs);
}

/* Blockquote */
.markdown-body blockquote {
  margin: 1.8em 0;
  padding: 24px 32px;
  border-left: 4px solid var(--primary);
  background: linear-gradient(135deg, var(--primary-dim), var(--accent-dim));
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) var(--border-radius-md);
  position: relative;
  overflow: hidden;
}

.markdown-body blockquote::before {
  content: '"';
  position: absolute;
  top: 8px;
  left: 16px;
  font-size: 4rem;
  color: var(--primary);
  opacity: 0.2;
  font-family: Georgia, serif;
  line-height: 1;
}

.markdown-body blockquote p {
  margin: 0;
  font-style: italic;
  position: relative;
  z-index: 1;
}

/* Lists */
.markdown-body ul,
.markdown-body ol {
  margin: 1.3em 0;
  padding-left: 30px;
}

.markdown-body li {
  margin: 12px 0;
  position: relative;
  padding-left: 8px;
}

.markdown-body li::marker {
  color: var(--primary);
}

.markdown-body ul li::marker {
  content: '▹';
  font-size: 1.1em;
}

/* Horizontal Rule */
.markdown-body hr {
  border: none;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), var(--accent), transparent);
  margin: 3.5em 0;
  border-radius: 1px;
  animation: hrGlow 3s ease-in-out infinite;
}

@keyframes hrGlow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ========== Code Blocks - Cyberpunk Theme ========== */
.markdown-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* Inline Code */
.markdown-body :not(pre) > code {
  background: linear-gradient(135deg, var(--code-bg), var(--code-bg-alt));
  color: var(--secondary);
  padding: 4px 10px;
  border-radius: var(--border-radius-xs);
  border: 1px solid var(--code-border);
  font-size: 0.85em;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Code Block Container */
.code-block {
  margin: 2em 0;
  background: linear-gradient(180deg, var(--code-bg) 0%, var(--code-bg-alt) 100%);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--code-border);
  position: relative;
  box-shadow: 
    0 4px 20px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  transition: var(--transition-normal);
}

.code-block:hover {
  border-color: var(--primary);
  box-shadow: 
    0 8px 30px rgba(0, 0, 0, 0.5),
    0 0 20px var(--primary-dim),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Code Header */
.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: var(--code-header-bg);
  border-bottom: 1px solid var(--code-border);
}

.code-lang {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 1.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.code-lang::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary-glow);
  animation: langPulse 2s ease-in-out infinite;
}

@keyframes langPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.code-copy {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
}

.code-copy:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-dim);
  transform: scale(1.05);
}

.code-copy.copied {
  color: var(--success);
  border-color: var(--success);
  background: rgba(0, 255, 136, 0.1);
}

.code-copy svg {
  transition: var(--transition-fast);
}

.code-copy:hover svg {
  transform: scale(1.1);
}

/* Code Pre */
.code-block pre {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.code-block pre code {
  display: block;
  padding: 20px;
  color: var(--code-variable);
  font-size: 0.85rem;
  line-height: 1.7;
  background: transparent;
  min-width: max-content;
}

/* Custom Scrollbar for Code */
.code-block pre::-webkit-scrollbar {
  height: 8px;
}

.code-block pre::-webkit-scrollbar-track {
  background: var(--code-bg);
}

.code-block pre::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 4px;
}

.code-block pre::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* HLJS Custom Theme - Cyberpunk */
.hljs-comment,
.hljs-quote {
  color: var(--code-comment);
  font-style: italic;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-addition {
  color: var(--code-keyword);
  font-weight: 500;
}

.hljs-string,
.hljs-meta .hljs-string,
.hljs-template-variable,
.hljs-attribute {
  color: var(--code-string);
}

.hljs-number,
.hljs-literal,
.hljs-regexp {
  color: var(--code-number);
}

.hljs-function,
.hljs-title,
.hljs-section,
.hljs-name {
  color: var(--code-function);
}

.hljs-variable,
.hljs-params {
  color: var(--code-variable);
}

.hljs-built_in,
.hljs-class .hljs-title,
.hljs-type {
  color: var(--code-class);
}

.hljs-property,
.hljs-attr {
  color: var(--code-property);
}

.hljs-symbol,
.hljs-bullet,
.hljs-link,
.hljs-meta {
  color: var(--primary);
}

.hljs-deletion {
  color: var(--error);
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: bold;
  color: var(--text-main);
}

.hljs-operator {
  color: var(--code-operator);
}

.hljs-punctuation {
  color: var(--code-punctuation);
}

/* ========== Images ========== */
.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  margin: 2em auto;
  display: block;
  border: 1px solid var(--glass-border);
  transition: var(--transition-normal);
}

.markdown-body img:hover {
  box-shadow: var(--shadow-lg), var(--shadow-glow-primary);
  transform: scale(1.01);
}

.markdown-body figure {
  margin: 2.5em 0;
  text-align: center;
}

.markdown-body figcaption {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 14px;
  font-style: italic;
  padding: 8px 16px;
  background: var(--glass-bg);
  border-radius: var(--border-radius-sm);
  display: inline-block;
}

/* ========== Tables ========== */
.markdown-body table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2em 0;
  font-size: 0.95rem;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

.markdown-body th,
.markdown-body td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
}

.markdown-body th {
  background: linear-gradient(135deg, var(--glass-bg), var(--bg-tertiary));
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 1px;
}

.markdown-body tr:last-child td {
  border-bottom: none;
}

.markdown-body tr {
  transition: var(--transition-fast);
}

.markdown-body tbody tr:hover {
  background: var(--primary-dim);
}

.markdown-body tbody tr:hover td {
  color: var(--text-main);
}

/* ========== Article Footer ========== */
.article-footer {
  margin-top: 100px;
  padding-top: 50px;
  border-top: 1px solid var(--glass-border);
  position: relative;
}

.article-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.article-tags .tag {
  background: var(--glass-bg);
  color: var(--text-muted);
  padding: 10px 18px;
  border-radius: var(--border-radius-lg);
  font-size: 0.8rem;
  border: 1px solid var(--glass-border);
  transition: var(--transition-fast);
  cursor: pointer;
}

.article-tags .tag:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-dim);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-primary);
}

.article-nav-links {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.article-nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 18px 28px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  background: var(--glass-bg);
}

.article-nav-links a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-dim);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-primary);
}

.article-nav-links a svg {
  transition: var(--transition-fast);
}

.article-nav-links a:hover svg {
  transform: translateX(-4px);
}

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--bg-color);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: var(--transition-normal);
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: var(--shadow-glow-primary);
}

.back-to-top:active {
  transform: scale(0.95);
}

/* ========== Font Size Controls ========== */
.font-controls {
  position: fixed;
  bottom: 30px;
  left: 30px;
  display: flex;
  gap: 10px;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.font-controls.visible {
  opacity: 1;
  visibility: visible;
}

.font-btn {
  width: 44px;
  height: 44px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
}

.font-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-dim);
  transform: scale(1.1);
  box-shadow: var(--shadow-glow-primary);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 240px;
  }
}

@media (max-width: 768px) {
  :root {
    --border-radius-md: 14px;
    --border-radius-lg: 20px;
  }
  
  .article-nav {
    padding: 0 16px;
  }
  
  .nav-links {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .article-container {
    padding: calc(var(--nav-height) + 30px) 16px 80px;
  }
  
  .article-header {
    margin-bottom: 36px;
    padding-bottom: 28px;
  }
  
  .article-title {
    font-size: 1.8rem;
  }
  
  .markdown-body {
    font-size: 1rem;
  }
  
  .markdown-body h2 {
    padding-left: 14px;
  }
  
  .markdown-body h2::before {
    width: 3px;
  }
  
  .markdown-body h3 {
    padding-left: 12px;
    border-left-width: 2px;
  }
  
  /* Mobile Code Blocks */
  .code-block {
    margin: 1.5em -16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .code-block pre {
    overflow-x: auto;
  }
  
  .code-block pre code {
    padding: 16px;
    font-size: 0.8rem;
    min-width: max-content;
    word-wrap: normal;
  }
  
  .code-header {
    padding: 10px 16px;
  }
  
  .code-copy {
    padding: 5px 10px;
    font-size: 0.7rem;
  }
  
  /* Mobile Inline Code */
  .markdown-body :not(pre) > code {
    font-size: 0.8em;
    padding: 3px 7px;
  }
  
  .article-toc {
    padding: 18px;
    margin-bottom: 36px;
    border-radius: var(--border-radius-sm);
  }
  
  .toc-content {
    max-height: 300px;
  }
  
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 46px;
    height: 46px;
  }
  
  .font-controls {
    bottom: 20px;
    left: 20px;
  }
  
  .font-btn {
    width: 40px;
    height: 40px;
    font-size: 0.8rem;
  }
  
  .btn-back {
    padding: 14px 28px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  :root {
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
  }
  
  .article-title {
    font-size: 1.5rem;
  }
  
  .article-meta {
    gap: 10px;
  }
  
  .article-category {
    font-size: 0.7rem;
    padding: 5px 12px;
  }
  
  .article-date,
  .article-reading-time {
    font-size: 0.75rem;
    padding: 5px 10px;
  }
  
  .author-avatar {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }
  
  .article-nav-links {
    flex-direction: column;
  }
  
  .article-nav-links a {
    width: 100%;
    justify-content: center;
  }
  
  .code-block pre code {
    padding: 14px;
    font-size: 0.75rem;
  }
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 5px;
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--secondary), var(--primary));
}

/* ========== Selection ========== */
::selection {
  background: var(--primary);
  color: var(--bg-color);
}

::-moz-selection {
  background: var(--primary);
  color: var(--bg-color);
}

/* ========== Print Styles ========== */
@media print {
  .article-nav,
  .article-toc,
  .back-to-top,
  .font-controls,
  .reading-progress,
  .bg-grid,
  .vignette,
  .bg-orbs {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .article-container {
    max-width: 100%;
    padding: 20px;
  }
  
  .code-block {
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
}