/* ========================================
   THE ENGINEERING STUDENT'S AI TOOLKIT
   Design System v2.0 — Technical Manual Aesthetic
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */
:root {
  /* Colors — Amber/Gold on Deep Navy */
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1623;
  --bg-card: #111827;
  --bg-card-hover: #1a2436;
  --text-primary: #f5f0e8;
  --text-secondary: #8b9ab4;
  --text-muted: #4a5568;
  --accent-amber: #f59e0b;
  --accent-amber-dim: #b45309;
  --accent-amber-glow: rgba(245, 158, 11, 0.12);
  --accent-amber-glow-strong: rgba(245, 158, 11, 0.22);
  --accent-cyan: #22d3ee;
  --accent-cyan-dim: #0891b2;
  --accent-cyan-glow: rgba(34, 211, 238, 0.1);
  --accent-green: #34d399;
  --accent-green-dim: #059669;
  --accent-green-glow: rgba(52, 211, 153, 0.1);
  --accent-red: #f87171;
  --accent-red-dim: #dc2626;
  --accent-red-glow: rgba(248, 113, 113, 0.1);
  --border-color: #1e2a3a;
  --border-accent: #2d3f54;
  
  /* Typography */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  
  /* Layout */
  --max-width: 1280px;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  
  /* Effects */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow-amber: 0 0 40px rgba(245, 158, 11, 0.15);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::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-mono);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  font-size: 15px;
  transition: opacity 0.15s ease;
}

body.page-leaving {
  opacity: 0;
}

body.page-loaded {
  opacity: 1;
}

[data-lang] {
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-accent); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-amber-dim); }

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

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.8rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
  line-height: 1.75;
}

a {
  color: var(--accent-amber);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-cyan);
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(245, 158, 11, 0.08);
  color: var(--accent-amber);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(245, 158, 11, 0.15);
}

strong { color: var(--text-primary); font-weight: 600; }
em { color: var(--accent-cyan); font-style: italic; }

ul, ol {
  margin-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

li {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

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

/* ========================================
   BACKGROUND EFFECTS
   ======================================== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(245, 158, 11, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 158, 11, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at 20% 0%, rgba(245, 158, 11, 0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 100%, rgba(34, 211, 238, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  width: 100%;
  position: relative;
  z-index: 1;
}

.section {
  padding: var(--space-3xl) 0;
  position: relative;
  width: 100%;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  width: 100%;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  width: 100%;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
  width: 100%;
}

/* ========================================
   NAVIGATION
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(10, 14, 23, 0.97);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  border-bottom-color: var(--border-accent);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  letter-spacing: -0.01em;
}

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

@media (max-width: 768px) {
  .nav-logo {
    height: 28px;
  }
}

.brand-icon {
  background: var(--accent-amber);
  color: var(--bg-primary);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  position: relative;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-links a::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-sm);
  background: var(--accent-amber-glow);
  opacity: 0;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-amber);
}

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

.nav-links a.active {
  color: var(--accent-amber);
  font-weight: 500;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-secondary);
  transition: var(--transition);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 14, 23, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  padding: 80px var(--space-2xl) var(--space-2xl);
  transform: translateX(100%);
  transition: var(--transition);
  flex-direction: column;
  gap: var(--space-sm);
}

.nav-mobile.open {
  transform: translateX(0);
}

.nav-mobile a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav-mobile a:hover,
.nav-mobile a.active {
  color: var(--accent-amber);
}

/* Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-amber), var(--accent-cyan));
  z-index: 1001;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  position: relative;
  padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-annotation {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  white-space: nowrap;
}

.hero-annotation-1 { top: 15%; right: 5%; transform: rotate(90deg); }
.hero-annotation-2 { bottom: 10%; left: 3%; }

.hero-corner {
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--accent-amber);
  opacity: 0.4;
}

.hero-corner-tl { top: 60px; left: 40px; border-top: 1px solid; border-left: 1px solid; }
.hero-corner-tr { top: 60px; right: 40px; border-top: 1px solid; border-right: 1px solid; }
.hero-corner-bl { bottom: 40px; left: 40px; border-bottom: 1px solid; border-left: 1px solid; }
.hero-corner-br { bottom: 40px; right: 40px; border-bottom: 1px solid; border-right: 1px solid; }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent-amber);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-xl);
  padding: var(--space-xs) var(--space-md);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 2px;
  background: rgba(245, 158, 11, 0.05);
}

.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent-amber);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(245, 158, 11, 0); }
}

.hero-title {
  margin-bottom: var(--space-lg);
  line-height: 1.08;
}

.hero-title .line-1 {
  display: block;
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero-title .line-2 {
  display: block;
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--accent-amber), #fbbf24, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  max-width: 620px;
  margin-bottom: var(--space-2xl);
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn:focus {
  outline: 2px solid var(--accent-amber);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--accent-amber);
  color: var(--bg-primary);
  border-color: var(--accent-amber);
}

.btn-primary:hover {
  background: #fbbf24;
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.35);
}

.btn-primary:focus {
  background: var(--accent-amber);
  color: var(--bg-primary);
  outline: 2px solid var(--accent-amber);
  outline-offset: 2px;
}

.btn-primary:active { transform: translateY(0); }

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

.btn-outline:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  transform: translateY(-2px);
  background: var(--bg-card);
}

.btn-outline:focus {
  color: var(--text-primary);
  background: var(--bg-card);
  outline: 2px solid var(--accent-amber);
  outline-offset: 2px;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--accent-amber);
  background: var(--accent-amber-glow);
}

.btn-ghost:focus {
  color: var(--accent-amber);
  outline: 2px solid var(--accent-amber);
  outline-offset: 2px;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.78rem;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  transform: translateY(-2px);
}

.btn-secondary:focus {
  color: var(--text-primary);
  background: var(--bg-card);
  outline: 2px solid var(--accent-amber);
  outline-offset: 2px;
}

.btn-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent-amber);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-label::before {
  content: '//';
  opacity: 0.5;
  font-size: 0.65rem;
}

.section-title {
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: 1.05rem;
  max-width: 680px;
  margin-bottom: var(--space-2xl);
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: 300;
}

.highlight-amber { color: var(--accent-amber); }
.highlight-cyan { color: var(--accent-cyan); }
.highlight-green { color: var(--accent-green); }
.highlight-red { color: var(--accent-red); }

/* ========================================
   PAGE HEADER (Inner Pages)
   ======================================== */
.page-header {
  position: relative;
  padding: calc(80px + var(--space-3xl)) 0 var(--space-2xl);
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-amber), transparent);
  opacity: 0.3;
}

/* ========================================
   STATS BAR
   ======================================== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--border-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: var(--space-2xl);
}

.stat-item {
  background: var(--bg-card);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.stat-item:hover {
  background: var(--bg-card-hover);
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-amber);
  transition: var(--transition);
}

.stat-item:hover::before { width: 60%; }

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-amber);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ========================================
   CARDS
   ======================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: var(--transition);
  width: 100%;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-amber), var(--accent-cyan));
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

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

.card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.65;
}

/* ========================================
   OVERVIEW CARDS (Homepage Grid)
   ======================================== */
.overview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.overview-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent-amber);
  transition: var(--transition);
}

.overview-card:hover {
  border-color: var(--accent-amber-dim);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-amber);
  background: var(--bg-card-hover);
}

.overview-card:hover::before { height: 100%; }

.ov-number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.ov-icon {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-amber);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}

.ov-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.ov-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.ov-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-amber);
  font-weight: 500;
  margin-top: var(--space-md);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.05em;
  transition: var(--transition);
}

.overview-card:hover .ov-link { gap: 10px; }

/* ========================================
   COMPARISON GRID
   ======================================== */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  width: 100%;
}

.comparison-col h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin-bottom: var(--space-md);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.comparison-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  transition: var(--transition);
  width: 100%;
}

.comparison-item.old {
  border-left: 3px solid var(--accent-red-dim);
  background: rgba(248, 113, 113, 0.04);
}

.comparison-item.new {
  border-left: 3px solid var(--accent-green);
  background: rgba(52, 211, 153, 0.04);
}

/* ========================================
   TABLES
   ======================================== */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin: var(--space-xl) 0;
  background: var(--bg-card);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-accent);
}

td {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
}

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

tr:hover td {
  background: rgba(245, 158, 11, 0.03);
}

td strong {
  color: var(--text-primary);
}

/* ========================================
   BADGES
   ======================================== */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 2px;
  white-space: nowrap;
  letter-spacing: 0.03em;
}

.badge-green {
  background: rgba(52, 211, 153, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.badge-cyan {
  background: rgba(34, 211, 238, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(34, 211, 238, 0.2);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-red {
  background: rgba(248, 113, 113, 0.1);
  color: var(--accent-red);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

.badge-purple {
  background: rgba(167, 139, 250, 0.1);
  color: #a78bfa;
  border: 1px solid rgba(167, 139, 250, 0.2);
}

/* ========================================
   CODE BLOCKS
   ======================================== */
.code-block {
  background: #050810;
  color: var(--text-primary);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  margin: var(--space-lg) 0;
  border: 1px solid var(--border-color);
  position: relative;
}

.code-block code {
  background: none;
  padding: 0;
  border: none;
  color: inherit;
  font-size: inherit;
}

.code-block .comment { color: #6b7280; font-style: italic; }
.code-block .keyword { color: #c084fc; }
.code-block .string { color: var(--accent-green); }
.code-block .prompt { color: var(--accent-amber); font-weight: 600; }
.code-block .command { color: var(--accent-cyan); }
.code-block .number { color: #fb923c; }
.code-block .function { color: var(--accent-cyan); }
.code-block .operator { color: #f472b6; }

.copy-btn {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: var(--border-accent);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.copy-btn:hover {
  background: var(--accent-amber);
  color: var(--bg-primary);
  border-color: var(--accent-amber);
}

/* ========================================
   CALLOUT BOXES
   ======================================== */
.callout {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent-amber);
  padding: var(--space-lg) var(--space-xl);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-xl) 0;
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.callout-icon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.callout-content {
  flex: 1;
}

.callout-content strong {
  color: var(--text-primary);
}

.callout-content a {
  color: var(--accent-cyan);
}

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

.callout-tip { border-left-color: var(--accent-green); }
.callout-warning { border-left-color: var(--accent-amber); }
.callout-danger { border-left-color: var(--accent-red); }
.callout-info { border-left-color: var(--accent-cyan); }
.callout-info .callout-icon {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border-color: rgba(6, 182, 212, 0.3);
}

.callout-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.callout p:last-child { margin-bottom: 0; }

/* ========================================
   DO / DON'T GRID
   ======================================== */
.do-dont-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.do-box, .dont-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.do-box { border-top: 3px solid var(--accent-green); }
.dont-box { border-top: 3px solid var(--accent-red); }

.do-box h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-green);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.dont-box h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-red);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.do-box ul, .dont-box ul {
  list-style: none;
  margin: 0;
}

.do-box li, .dont-box li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.do-box li:last-child, .dont-box li:last-child { border-bottom: none; }

/* ========================================
   MYTH CARDS
   ======================================== */
.myth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
}

.myth-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.myth-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  flex-wrap: nowrap;
}

.myth-card {
  display: flex;
  flex-direction: column;
}

.myth-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.myth-label.myth {
  background: rgba(248, 113, 113, 0.1);
  color: var(--accent-red);
  border: 1px solid rgba(248, 113, 113, 0.25);
}

.myth-label.reality {
  background: rgba(52, 211, 153, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(52, 211, 153, 0.25);
}

.myth-text {
  flex: 1;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.myth-toggle {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-muted);
  transition: var(--transition);
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.myth-card.open .myth-toggle {
  transform: rotate(45deg);
  background: var(--accent-amber);
  color: var(--bg-primary);
}

.myth-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.myth-card.open .myth-body {
  max-height: 1000px;
}

.myth-body-inner {
  padding: 0 var(--space-xl) var(--space-xl);
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-lg);
}

.myth-body-inner p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.myth-body-inner strong { color: var(--text-primary); }

.myth-body-inner ul {
  margin-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.myth-body-inner li {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========================================
   TIMELINE (Checklist Page)
   ======================================== */
.timeline {
  position: relative;
  padding-left: 60px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--accent-amber), var(--accent-cyan), var(--border-color));
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  transition: var(--transition);
}

.timeline-item:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.timeline-dot {
  position: absolute;
  left: -48px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  background: var(--bg-primary);
  border: 2px solid var(--accent-amber);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-amber);
  z-index: 1;
}

.timeline-day {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-amber);
  margin-bottom: var(--space-xs);
}

.timeline-task {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.timeline-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   CHECKLIST (Interactive)
   ======================================== */
.checklist {
  list-style: none;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  margin: 0;
  color: var(--text-secondary);
}

.checklist li:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.check-box {
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--border-accent);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  margin-top: 1px;
  transition: var(--transition);
  position: relative;
}

.check-box::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 2px;
  width: 6px;
  height: 10px;
  border: 2px solid transparent;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
  transition: var(--transition);
}

.checklist li.checked .check-box {
  background: var(--accent-amber);
  border-color: var(--accent-amber);
}

.checklist li.checked .check-box::after {
  border-color: var(--bg-primary);
}

.checklist li.checked {
  opacity: 0.6;
  text-decoration: line-through;
  text-decoration-color: var(--text-muted);
}

.checklist-text {
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ========================================
   WORKFLOW CARDS
   ======================================== */
.workflow-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: var(--transition);
}

.workflow-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.workflow-card.coding { border-top: 3px solid var(--accent-cyan); }
.workflow-card.research { border-top: 3px solid var(--accent-amber); }
.workflow-card.career { border-top: 3px solid var(--accent-green); }

.wf-icon {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
}

.coding .wf-icon { color: var(--accent-cyan); }
.research .wf-icon { color: var(--accent-amber); }
.career .wf-icon { color: var(--accent-green); }

.wf-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.wf-list {
  list-style: none;
  margin: 0;
}

.wf-list li {
  font-size: 0.85rem;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.wf-list li:last-child { border-bottom: none; }

/* ========================================
   STEPS LIST
   ======================================== */
.steps-list {
  list-style: none;
  margin: 0;
  counter-reset: steps;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.steps-list li {
  counter-increment: steps;
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
  transition: var(--transition);
}

.steps-list li:hover {
  border-color: var(--border-accent);
}

.steps-list li::before {
  content: counter(steps, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-amber);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   DIRECTORY CATEGORY
   ======================================== */
.dir-cat {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-amber);
  padding: 3px 8px;
  background: var(--accent-amber-glow);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 2px;
  display: inline-block;
  margin-bottom: var(--space-md);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: var(--space-3xl) 0;
  margin-top: var(--space-3xl);
  border-top: 1px solid var(--border-color);
  position: relative;
  text-align: center;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-amber), transparent);
  opacity: 0.3;
}

.footer-logo {
  height: 80px;
  width: auto;
  margin-bottom: var(--space-lg);
  opacity: 0.9;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  letter-spacing: -0.01em;
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-bottom: var(--space-sm);
}

.footer-fb-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-amber);
  margin-top: var(--space-sm);
  transition: var(--transition);
}

.footer-fb-link:hover {
  color: var(--accent-cyan);
}

.footer-made-by {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: var(--space-md);
}

.footer-made-by a {
  color: var(--accent-amber);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
  margin-top: var(--space-xl);
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-amber);
}

/* ========================================
   BACK TO TOP
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
  color: var(--text-muted);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--accent-amber);
  border-color: var(--accent-amber);
  color: var(--bg-primary);
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

/* ========================================
   ANIMATIONS
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }
.reveal-delay-6 { transition-delay: 0.48s; }

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-amber);
  color: var(--bg-primary);
  padding: var(--space-sm) var(--space-md);
  z-index: 10000;
  transition: top 0.3s;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8rem;
}

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

/* Perk link */
.perk-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-weight: 500;
}

.perk-link:hover { color: var(--accent-amber); }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .container { padding: 0 var(--space-lg); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-mobile { display: flex; }
  
  .hero {
    min-height: auto;
    padding-top: calc(70px + var(--space-2xl));
    padding-bottom: var(--space-2xl);
  }
  
  .hero-corner { display: none; }
  .hero-annotation { display: none; }
  
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
  
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .comparison-grid { grid-template-columns: 1fr; }
  .do-dont-grid { grid-template-columns: 1fr; }
  
  .hero-stats,
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  
  .timeline { padding-left: 40px; }
  .timeline::before { left: 16px; }
  .timeline-dot { left: -32px; width: 28px; height: 28px; font-size: 0.65rem; }
  
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
}

@media (max-width: 480px) {
  :root {
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 3rem;
  }
  
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .stat-value { font-size: 1.6rem; }
}

/* ========================================
   RTL SUPPORT (Arabic)
   ======================================== */
[dir="rtl"] {
  font-family: 'Noto Sans Arabic', 'Segoe UI', Tahoma, sans-serif;
}

[dir="rtl"] .nav-links {
  flex-direction: row-reverse;
}

[dir="rtl"] .nav-links a {
  padding: var(--space-sm) var(--space-md);
}

[dir="rtl"] .hero-annotation-1 {
  right: auto;
  left: 20px;
}

[dir="rtl"] .hero-annotation-2 {
  left: auto;
  right: 20px;
}

[dir="rtl"] .section-label::before {
  content: '— ';
}

[dir="rtl"] .comparison-grid {
  direction: rtl;
}

[dir="rtl"] .footer-links {
  flex-direction: row-reverse;
}

[dir="rtl"] .footer-links a {
  padding: var(--space-xs) var(--space-sm);
}

[dir="rtl"] .card,
[dir="rtl"] .overview-card {
  text-align: right;
}

[dir="rtl"] .overview-card .ov-link {
  text-align: left;
}

[dir="rtl"] .table-wrapper {
  direction: rtl;
}

[dir="rtl"] .table-wrapper table {
  text-align: right;
}

[dir="rtl"] .timeline {
  padding-left: 0;
  padding-right: 40px;
}

[dir="rtl"] .timeline::before {
  left: auto;
  right: 16px;
}

[dir="rtl"] .timeline-dot {
  left: auto;
  right: -32px;
}

[dir="rtl"] .callout {
  border-left: none;
  border-right: 3px solid;
}

[dir="rtl"] .badge {
  margin-left: 0;
  margin-right: auto;
}

[dir="rtl"] .hero-actions {
  flex-direction: row-reverse;
}

[dir="rtl"] .countdown-display {
  flex-direction: row-reverse;
}

[dir="rtl"] .film-strip-standalone {
  animation-direction: reverse;
}

[dir="rtl"] .lang-switcher {
  margin-left: 0;
  margin-right: auto;
}

/* Language switcher styling */
.lang-switcher {
  display: flex;
  gap: var(--space-xs);
  margin-left: var(--space-md);
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-color);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-btn:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
}

.lang-btn.active {
  color: var(--accent-amber);
  background: rgba(251, 191, 36, 0.1);
  border-color: var(--accent-amber);
}

/* ========================================
   FLOATING PROGRESS TRACKER
   ======================================== */
.floating-tracker {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  min-width: 180px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.floating-tracker.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.floating-tracker-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.floating-tracker-icon {
  font-size: 0.9rem;
}

.floating-tracker-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.floating-tracker-percent {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-amber);
  line-height: 1;
  margin-bottom: var(--space-sm);
  text-shadow: 0 0 20px rgba(251, 191, 36, 0.4);
}

.floating-tracker-bar {
  height: 4px;
  background: var(--bg-primary);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.floating-tracker-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-amber), var(--accent-green));
  border-radius: 2px;
  width: 0%;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.floating-tracker-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
}

.floating-tracker-pages {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: var(--space-sm);
}

.floating-tracker-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.floating-tracker-dot.read {
  background: var(--accent-green);
  border-color: var(--accent-green);
  box-shadow: 0 0 6px rgba(52, 211, 153, 0.5);
}

.floating-tracker-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-secondary);
  white-space: nowrap;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

.floating-tracker:hover .floating-tracker-tooltip {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .floating-tracker {
    bottom: var(--space-md);
    right: var(--space-md);
    min-width: 140px;
    padding: var(--space-sm) var(--space-md);
  }
  
  .floating-tracker-percent {
    font-size: 1.2rem;
  }
}

.floating-tracker.complete {
  border-color: var(--accent-green);
}

.floating-tracker.complete .floating-tracker-percent {
  color: var(--accent-green);
  text-shadow: 0 0 20px rgba(52, 211, 153, 0.4);
}

/* ========================================
   PAGE TRACKER (Reading Progress)
   ======================================== */
.page-tracker {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.tracker-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.tracker-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 600;
}

.tracker-progress-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-amber);
  background: rgba(251, 191, 36, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.tracker-bar {
  height: 6px;
  background: var(--bg-primary);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.tracker-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-amber), var(--accent-green));
  border-radius: 3px;
  width: 0%;
  transition: width 0.5s ease;
}

.tracker-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.tracker-item {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 6px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

.tracker-item:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.tracker-item.read {
  background: rgba(52, 211, 153, 0.1);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.tracker-item.read::after {
  content: '';
  position: absolute;
  top: -4px;
  right: -4px;
  width: 10px;
  height: 10px;
  background: var(--accent-green);
  border-radius: 50%;
}

.tracker-hint {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}