/* ============================================
   AI MEESTERSCHAP — PREMIUM E-LEARNING STYLES
   ============================================ */

/* === CSS VARIABLES === */
:root {
  --bg-primary: #08091a;
  --bg-secondary: #0f1128;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-border: rgba(255, 255, 255, 0.1);

  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  --color-secondary: #8b5cf6;
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;
  --color-success: #10b981;
  --color-success-light: #34d399;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-on-primary: #ffffff;

  --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
  --gradient-gold: linear-gradient(135deg, #f59e0b, #fbbf24);
  --gradient-success: linear-gradient(135deg, #10b981, #34d399);
  --gradient-hero: linear-gradient(135deg, #0f1128 0%, #0d0f2b 50%, #0a0b1e 100%);
  --gradient-text: linear-gradient(135deg, #6366f1, #a78bfa, #f59e0b);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);
  --shadow-glow-gold: 0 0 30px rgba(245, 158, 11, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  --navbar-height: 72px;
  --sidebar-width: 300px;
}

.light-theme {
  --bg-primary: #f8faff;
  --bg-secondary: #eef2ff;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-border: rgba(99, 102, 241, 0.2);
  --text-primary: #1e1b4b;
  --text-secondary: #4338ca;
  --text-muted: #6d7fd9;
  --shadow-sm: 0 2px 8px rgba(99, 102, 241, 0.1);
  --shadow-md: 0 4px 20px rgba(99, 102, 241, 0.15);
  --shadow-lg: 0 8px 40px rgba(99, 102, 241, 0.2);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-slow);
}

a { color: var(--color-primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

/* === UTILITY CLASSES === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden { display: none !important; }
.visible { display: block !important; }

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted { color: var(--text-muted); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
  text-decoration: none;
  color: white;
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(99, 102, 241, 0.3);
}
.btn-secondary:hover {
  background: rgba(99, 102, 241, 0.25);
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--bg-glass-border);
}
.btn-ghost:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
  text-decoration: none;
}

.btn-success {
  background: var(--gradient-success);
  color: white;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
}
.btn-success:hover { transform: translateY(-2px); text-decoration: none; color: white; }

.btn-large { padding: 16px 36px; font-size: 16px; }
.btn-small { padding: 8px 16px; font-size: 13px; }
.btn-full { width: 100%; justify-content: center; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* === NAVBAR === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 1000;
  background: rgba(8, 9, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--bg-glass-border);
  transition: background var(--transition-slow);
}

.light-theme .navbar {
  background: rgba(248, 250, 255, 0.9);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.nav-brand-text {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
  text-decoration: none;
}
.nav-link.active {
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.15);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  padding: 8px 12px;
  cursor: pointer;
  font-size: 16px;
  transition: all var(--transition-fast);
}
.theme-toggle:hover { background: var(--bg-card-hover); transform: scale(1.1); }

.nav-xp {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent-light);
}

.nav-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  transition: transform var(--transition-fast);
}
.nav-avatar:hover { transform: scale(1.1); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* === APP CONTAINER === */
.app-container {
  padding-top: var(--navbar-height);
  min-height: 100vh;
}

/* === VIEWS === */
.view {
  display: none;
  animation: fadeInUp 0.4s ease;
}
.view.active { display: block; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.view-header {
  background: var(--bg-secondary);
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--bg-glass-border);
}
.view-header h1 {
  font-size: 2.5rem;
  margin-top: 16px;
  margin-bottom: 8px;
}
.view-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.back-btn {
  background: none;
  border: none;
  color: var(--color-primary-light);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  transition: gap var(--transition-fast);
}
.back-btn:hover { text-decoration: underline; }

/* === HERO SECTION === */
.hero {
  min-height: calc(100vh - var(--navbar-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 80px 40px;
  gap: 60px;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
}
.hero-orb-1 {
  width: 600px;
  height: 600px;
  background: var(--color-primary);
  top: -200px;
  right: -100px;
  animation: orbFloat 8s ease-in-out infinite;
}
.hero-orb-2 {
  width: 400px;
  height: 400px;
  background: var(--color-secondary);
  bottom: -100px;
  left: 100px;
  animation: orbFloat 10s ease-in-out infinite reverse;
}
.hero-orb-3 {
  width: 300px;
  height: 300px;
  background: var(--color-accent);
  top: 30%;
  left: 40%;
  animation: orbFloat 12s ease-in-out infinite;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

.hero-content {
  flex: 1;
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: 24px;
  animation: slideInLeft 0.6s ease 0.2s both;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  animation: slideInLeft 0.6s ease 0.3s both;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  animation: slideInLeft 0.6s ease 0.4s both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 40px;
  animation: slideInLeft 0.6s ease 0.5s both;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 16px 24px;
  backdrop-filter: blur(10px);
  width: fit-content;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 20px;
}
.stat-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary-light);
}
.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--bg-glass-border);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: slideInLeft 0.6s ease 0.6s both;
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Hero Visual */
.hero-visual {
  flex: 0 0 420px;
  position: relative;
  z-index: 1;
  height: 480px;
}

.hero-card-stack {
  position: relative;
  width: 100%;
  height: 100%;
}

.floating-card {
  position: absolute;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-slow);
}

.fc-icon { font-size: 28px; }
.fc-title { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.fc-sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.card-1 {
  top: 40px; left: 20px; width: 240px;
  animation: floatCard1 6s ease-in-out infinite;
}
.card-2 {
  top: 130px; right: 0; width: 220px;
  animation: floatCard2 7s ease-in-out infinite;
}
.card-3 {
  bottom: 140px; left: 40px; width: 230px;
  animation: floatCard3 8s ease-in-out infinite;
}
.card-4 {
  bottom: 40px; right: 20px; width: 210px;
  animation: floatCard4 5.5s ease-in-out infinite;
}

@keyframes floatCard1 {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-12px) rotate(-1deg); }
}
@keyframes floatCard2 {
  0%, 100% { transform: translateY(0) rotate(2deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}
@keyframes floatCard3 {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-8px) rotate(0deg); }
}
@keyframes floatCard4 {
  0%, 100% { transform: translateY(0) rotate(1deg); }
  50% { transform: translateY(-14px) rotate(2deg); }
}

/* === SECTIONS === */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* === PROGRESS OVERVIEW CARD === */
.progress-section { background: var(--bg-secondary); }

.progress-overview-card {
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  gap: 60px;
  align-items: center;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}

.poc-left { flex: 0 0 auto; text-align: center; }
.poc-left h2 { font-size: 1.5rem; margin-bottom: 20px; }

.progress-ring-container { position: relative; display: inline-block; }
.ring-bg { stroke: rgba(255,255,255,0.1); }
.ring-fill {
  stroke: url(#ringGrad);
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke-dashoffset 1s ease;
}
.ring-text {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  fill: var(--text-primary);
}

.poc-right { flex: 1; }
.poc-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.poc-stat { text-align: center; }
.poc-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-light);
  display: block;
}
.poc-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}
.poc-continue p { color: var(--text-secondary); margin-bottom: 12px; font-size: 14px; }

/* === MODULES GRID === */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--module-color, var(--gradient-primary));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.module-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.3);
}
.module-card:hover::before { opacity: 1; }

.module-card.locked {
  opacity: 0.6;
  cursor: not-allowed;
}
.module-card.locked:hover { transform: none; box-shadow: none; }

.module-card.completed { border-color: rgba(16, 185, 129, 0.3); }
.module-card.completed::before { background: var(--gradient-success); opacity: 1; }

.mc-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}

.mc-number {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.mc-icon {
  font-size: 36px;
  line-height: 1;
  margin-bottom: 4px;
}

.mc-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
}
.mc-status.status-locked { background: rgba(100,116,139,0.2); color: var(--text-muted); }
.mc-status.status-available { background: rgba(99,102,241,0.2); color: var(--color-primary-light); }
.mc-status.status-in-progress { background: rgba(245,158,11,0.2); color: var(--color-accent-light); }
.mc-status.status-completed { background: rgba(16,185,129,0.2); color: var(--color-success-light); }

.mc-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.mc-description {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.mc-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}
.mc-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.mc-progress {
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  height: 6px;
  overflow: hidden;
}
.mc-progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.module-card.completed .mc-progress-fill { background: var(--gradient-success); }

/* === PRINCIPLES GRID === */
.principles-section { background: var(--bg-secondary); }

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.principle-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-normal);
}
.principle-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.principle-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.principle-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.principle-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === BADGES === */
.badges-section { }

.badges-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  cursor: default;
  min-width: 110px;
}

.badge-item.earned {
  border-color: rgba(245, 158, 11, 0.4);
  background: rgba(245, 158, 11, 0.08);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
}

.badge-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.badge-icon {
  font-size: 40px;
  transition: transform var(--transition-normal);
}
.badge-item:hover .badge-icon { transform: scale(1.2) rotate(5deg); }
.badge-item:not(.earned) .badge-icon { filter: grayscale(1) opacity(0.4); }

.badge-name {
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-item.earned .badge-name { color: var(--color-accent-light); }

/* === MODULES LIST (Modules View) === */
.modules-list { padding: 40px 0; }

.module-list-item {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 28px 32px;
  margin-bottom: 16px;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  gap: 24px;
  align-items: center;
}

.module-list-item:hover {
  background: var(--bg-card-hover);
  transform: translateX(4px);
  border-color: rgba(99, 102, 241, 0.3);
}

.module-list-item.locked { opacity: 0.5; cursor: not-allowed; }
.module-list-item.locked:hover { transform: none; }

.mli-icon {
  font-size: 44px;
  flex: 0 0 auto;
}

.mli-content { flex: 1; }
.mli-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.mli-number { font-size: 12px; color: var(--text-muted); font-weight: 600; }
.mli-title { font-size: 1.2rem; font-weight: 700; }
.mli-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }

.mli-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.mli-tag {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary-light);
}

.mli-right {
  flex: 0 0 160px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.mli-progress-ring {
  position: relative;
}

.mli-progress-ring svg { transform: rotate(-90deg); }
.mli-pr-bg { stroke: rgba(255,255,255,0.08); }
.mli-pr-fill {
  stroke: var(--color-primary);
  stroke-linecap: round;
  transition: stroke-dashoffset 1s ease;
}

.mli-arrow {
  font-size: 20px;
  color: var(--color-primary-light);
}

/* === LESSON LAYOUT === */
.lesson-layout {
  display: flex;
  height: calc(100vh - var(--navbar-height));
}

/* Sidebar */
.lesson-sidebar {
  width: var(--sidebar-width);
  flex: 0 0 var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--bg-glass-border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 24px 20px 16px;
  border-bottom: 1px solid var(--bg-glass-border);
}

.sidebar-module-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 10px;
  line-height: 1.4;
}

.sidebar-lessons {
  flex: 1;
  padding: 12px;
}

.sidebar-lesson-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
}

.sidebar-lesson-item:hover { background: var(--bg-card-hover); }
.sidebar-lesson-item.active {
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.sli-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex: 0 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}
.sli-dot.dot-locked { background: rgba(100,116,139,0.2); color: var(--text-muted); }
.sli-dot.dot-available { background: rgba(99,102,241,0.2); color: var(--color-primary-light); border: 1px solid rgba(99,102,241,0.4); }
.sli-dot.dot-active { background: var(--gradient-primary); color: white; }
.sli-dot.dot-completed { background: var(--gradient-success); color: white; font-size: 12px; }
.sli-dot.dot-quiz { background: rgba(245,158,11,0.2); color: var(--color-accent-light); border: 1px solid rgba(245,158,11,0.4); }

.sli-info { flex: 1; min-width: 0; }
.sli-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sli-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 1px;
}
.sidebar-lesson-item.active .sli-title { color: var(--color-primary-light); }

.sidebar-progress {
  padding: 16px 20px;
  border-top: 1px solid var(--bg-glass-border);
}
.sp-label { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; }
.sp-bar {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 4px;
}
.sp-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}
.sp-pct { font-size: 12px; color: var(--color-primary-light); font-weight: 600; }

/* Lesson Main */
.lesson-main {
  flex: 1;
  overflow-y: auto;
  padding: 40px;
  max-width: 800px;
}

.lesson-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.lesson-breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
}

.lesson-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lesson-duration {
  font-size: 13px;
  color: var(--text-muted);
}

.lesson-xp-badge {
  padding: 4px 12px;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent-light);
}

/* === LESSON CONTENT ELEMENTS === */
.lesson-content { margin-bottom: 60px; }

.lc-hero {
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: 48px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}
.lc-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 60%);
}
.lc-hero .lesson-icon {
  font-size: 56px;
  margin-bottom: 16px;
}
.lc-hero h1 {
  font-size: 2rem;
  color: white;
  margin-bottom: 12px;
}
.lc-hero p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
}

.lc-text {
  font-size: 1.025rem;
  line-height: 1.8;
  color: var(--text-primary);
  margin-bottom: 28px;
}
.lc-text p { margin-bottom: 16px; }
.lc-text p:last-child { margin-bottom: 0; }
.lc-text strong { color: var(--color-primary-light); }
.lc-text em { color: var(--color-accent-light); font-style: italic; }

.lc-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--bg-glass-border);
}

.lc-subheading {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin: 24px 0 12px;
}

.lc-highlight {
  background: rgba(99,102,241,0.1);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 1.025rem;
  line-height: 1.7;
}

.lc-warning {
  background: rgba(245,158,11,0.1);
  border-left: 4px solid var(--color-warning);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 24px 0;
}

.lc-success {
  background: rgba(16,185,129,0.1);
  border-left: 4px solid var(--color-success);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 24px 0;
}

.lc-callout {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}

.lc-callout-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-weight: 700;
  font-size: 1rem;
}

.lc-example {
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.08));
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}

.lc-example-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary-light);
  margin-bottom: 12px;
}

.lc-example h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.lc-prompt-box {
  background: #0d0f2b;
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 16px 0;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.7;
  color: #e2e8f0;
  position: relative;
}

.light-theme .lc-prompt-box {
  background: #1e1b4b;
  color: #e2e8f0;
}

.lc-prompt-label {
  position: absolute;
  top: -1px;
  left: 16px;
  background: var(--color-primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 10px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.lc-response-box {
  background: rgba(16,185,129,0.05);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 16px 0;
  font-size: 14px;
  line-height: 1.7;
  position: relative;
}

.lc-response-label {
  position: absolute;
  top: -1px;
  left: 16px;
  background: var(--color-success);
  color: white;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 10px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.lc-list {
  margin: 16px 0 24px;
  padding-left: 0;
  list-style: none;
}

.lc-list li {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  font-size: 1.025rem;
  line-height: 1.6;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.lc-list li:last-child { border-bottom: none; }

.lc-list li::before {
  content: '→';
  color: var(--color-primary-light);
  font-weight: 700;
  flex: 0 0 auto;
  margin-top: 2px;
}

.lc-numbered-list {
  margin: 16px 0 24px;
  counter-reset: list-counter;
  padding-left: 0;
  list-style: none;
}

.lc-numbered-list li {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  font-size: 1.025rem;
  line-height: 1.6;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  counter-increment: list-counter;
}
.lc-numbered-list li:last-child { border-bottom: none; }

.lc-numbered-list li::before {
  content: counter(list-counter);
  background: var(--gradient-primary);
  color: white;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex: 0 0 28px;
  margin-top: 2px;
}

.lc-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0;
}

.lc-comparison-col {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.lc-comparison-col.good { border-color: rgba(16,185,129,0.3); }
.lc-comparison-col.bad { border-color: rgba(239,68,68,0.3); }

.lc-comparison-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.good .lc-comparison-title { color: var(--color-success-light); }
.bad .lc-comparison-title { color: var(--color-danger); }

.lc-tip {
  background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(251,191,36,0.05));
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin: 24px 0;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.lc-tip-icon { font-size: 24px; flex: 0 0 auto; }

.lc-tip-content { }
.lc-tip-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent-light);
  margin-bottom: 6px;
}
.lc-tip-text { font-size: 14px; line-height: 1.7; }

.lc-exercise {
  background: linear-gradient(135deg, rgba(16,185,129,0.08), rgba(52,211,153,0.05));
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: var(--radius-xl);
  padding: 32px;
  margin: 32px 0;
}

.lc-exercise-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.lc-exercise-icon { font-size: 32px; }

.lc-exercise-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-success-light);
}

.lc-exercise-subtitle {
  font-size: 13px;
  color: var(--text-muted);
}

.lc-exercise-steps { }
.lc-exercise-step {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.lc-step-num {
  width: 30px;
  height: 30px;
  background: rgba(16,185,129,0.2);
  border: 1px solid rgba(16,185,129,0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-success-light);
  flex: 0 0 30px;
}

.lc-step-content { padding-top: 4px; font-size: 14px; line-height: 1.6; }

.lc-key-takeaways {
  background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.05));
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-xl);
  padding: 32px;
  margin: 40px 0;
}

.lc-kt-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.lc-kt-icon { font-size: 28px; }
.lc-kt-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-light);
}

.lc-kt-items { display: flex; flex-direction: column; gap: 12px; }

.lc-kt-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  line-height: 1.6;
}
.lc-kt-item::before {
  content: '✓';
  background: var(--gradient-primary);
  color: white;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex: 0 0 20px;
  margin-top: 2px;
}

.lc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.lc-table th {
  background: rgba(99,102,241,0.15);
  color: var(--color-primary-light);
  font-weight: 700;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid rgba(99,102,241,0.3);
}

.lc-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  line-height: 1.5;
}

.lc-table tr:hover td { background: var(--bg-glass); }

.lc-inline-quiz {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  margin: 32px 0;
}

.lc-iq-question {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.lc-iq-question::before {
  content: '?';
  background: rgba(99,102,241,0.2);
  color: var(--color-primary-light);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  flex: 0 0 24px;
  margin-top: 1px;
}

.lc-iq-options { display: flex; flex-direction: column; gap: 8px; }

.lc-iq-option {
  padding: 12px 16px;
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 10px;
}

.lc-iq-option:hover { background: var(--bg-card-hover); border-color: rgba(99,102,241,0.4); }
.lc-iq-option.selected-correct { background: rgba(16,185,129,0.15); border-color: var(--color-success); color: var(--color-success-light); }
.lc-iq-option.selected-wrong { background: rgba(239,68,68,0.1); border-color: var(--color-danger); color: var(--color-danger); }
.lc-iq-option.reveal-correct { background: rgba(16,185,129,0.1); border-color: rgba(16,185,129,0.5); }

.lc-iq-feedback {
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  display: none;
}
.lc-iq-feedback.correct { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); color: var(--color-success-light); display: block; }
.lc-iq-feedback.incorrect { background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.3); color: var(--color-danger); display: block; }

/* Lesson Navigation */
.lesson-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--bg-glass-border);
}

/* === QUIZ VIEW === */
.quiz-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.quiz-header {
  margin-bottom: 40px;
}

.quiz-module-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary-light);
  margin-bottom: 6px;
  margin-top: 16px;
}

.quiz-title { font-size: 1.8rem; font-weight: 800; margin-bottom: 24px; }

.quiz-progress-bar {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 8px;
}

.quiz-pb-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 0.5s ease;
}

.quiz-counter {
  font-size: 13px;
  color: var(--text-muted);
}

.quiz-question-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 36px;
  margin-bottom: 24px;
  animation: fadeInUp 0.3s ease;
}

.quiz-question-num {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.quiz-question-text {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 8px;
}

.quiz-question-hint {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
  font-style: italic;
}

.quiz-options { display: flex; flex-direction: column; gap: 10px; }

.quiz-option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border: 1.5px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: 15px;
  transition: all var(--transition-fast);
  background: var(--bg-secondary);
}

.quiz-option:hover:not(.disabled) {
  border-color: var(--color-primary);
  background: rgba(99,102,241,0.1);
  transform: translateX(4px);
}

.quiz-option.selected { border-color: var(--color-primary); background: rgba(99,102,241,0.15); }
.quiz-option.correct { border-color: var(--color-success); background: rgba(16,185,129,0.12); color: var(--color-success-light); }
.quiz-option.incorrect { border-color: var(--color-danger); background: rgba(239,68,68,0.1); color: var(--color-danger); }
.quiz-option.reveal { border-color: rgba(16,185,129,0.5); background: rgba(16,185,129,0.06); }
.quiz-option.disabled { cursor: default; }

.qo-letter {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex: 0 0 32px;
}
.quiz-option.selected .qo-letter { background: var(--color-primary); color: white; border-color: transparent; }
.quiz-option.correct .qo-letter { background: var(--color-success); color: white; border-color: transparent; }
.quiz-option.incorrect .qo-letter { background: var(--color-danger); color: white; border-color: transparent; }

.quiz-explanation {
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.6;
  display: none;
}
.quiz-explanation.visible { display: block; animation: fadeInUp 0.3s ease; }

.quiz-action-row {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* Quiz Results */
.quiz-results {
  text-align: center;
  padding: 60px 20px;
  animation: fadeInUp 0.4s ease;
}

.results-trophy { font-size: 80px; margin-bottom: 20px; animation: bounceIn 0.6s ease; }

@keyframes bounceIn {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

.quiz-results h2 { font-size: 2rem; margin-bottom: 20px; }

.results-score {
  font-size: 4rem;
  font-weight: 900;
  font-family: var(--font-heading);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.results-feedback {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.results-breakdown {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.rb-item { text-align: center; }
.rb-num { font-size: 2rem; font-weight: 800; display: block; }
.rb-label { font-size: 13px; color: var(--text-muted); }
.rb-item.correct .rb-num { color: var(--color-success-light); }
.rb-item.wrong .rb-num { color: var(--color-danger); }
.rb-item.xp .rb-num { color: var(--color-accent-light); }

.results-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* === PROGRESS VIEW === */
.progress-dashboard { padding: 40px 0; }

.pd-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 24px;
  margin-bottom: 40px;
}

.pd-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
}

.pd-stat-card h3 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.pd-big-num {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pd-modules-progress h3 { margin-bottom: 20px; }

.pd-module-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 13px;
}

.pd-module-name { flex: 0 0 180px; color: var(--text-secondary); }
.pd-module-bar-bg { flex: 1; height: 8px; background: rgba(255,255,255,0.06); border-radius: var(--radius-full); overflow: hidden; }
.pd-module-bar-fill { height: 100%; border-radius: var(--radius-full); background: var(--gradient-primary); transition: width 1s ease; }
.pd-module-pct { flex: 0 0 36px; text-align: right; color: var(--text-muted); }

.pd-badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

/* === TOOLS GUIDE === */
.tools-guide { padding: 40px 0; }

.tools-comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: all var(--transition-normal);
}

.tool-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tc-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.tc-logo { font-size: 40px; }

.tc-name { font-size: 1.2rem; font-weight: 800; }
.tc-maker { font-size: 12px; color: var(--text-muted); }

.tc-rating {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}
.tc-rating span { color: var(--color-accent); font-size: 14px; }

.tc-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.tc-strengths, .tc-limitations { margin-bottom: 16px; }
.tc-label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.tc-strengths .tc-label { color: var(--color-success-light); }
.tc-limitations .tc-label { color: var(--color-danger); }

.tc-items { display: flex; flex-direction: column; gap: 6px; }
.tc-item {
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}
.tc-item.strength::before { content: '✓'; color: var(--color-success-light); font-weight: 700; flex: 0 0 auto; }
.tc-item.limitation::before { content: '×'; color: var(--color-danger); font-weight: 700; flex: 0 0 auto; }

.tc-best-for {
  background: rgba(99,102,241,0.1);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 13px;
  margin-top: 16px;
}

.tc-best-for strong { color: var(--color-primary-light); }

.tools-matrix {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  overflow-x: auto;
}

.tools-matrix h2 { margin-bottom: 24px; }

.matrix-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.matrix-table th { padding: 12px 16px; text-align: center; font-size: 13px; color: var(--text-muted); background: rgba(255,255,255,0.04); border-bottom: 1px solid var(--bg-glass-border); }
.matrix-table th:first-child { text-align: left; }
.matrix-table td { padding: 12px 16px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.04); }
.matrix-table td:first-child { text-align: left; font-weight: 500; color: var(--text-secondary); }
.matrix-table tr:last-child td { border-bottom: none; }
.matrix-table .good { color: var(--color-success-light); font-size: 18px; }
.matrix-table .mid { color: var(--color-accent); font-size: 18px; }
.matrix-table .bad { color: var(--color-danger); font-size: 16px; }

/* === TOAST NOTIFICATIONS === */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  font-weight: 500;
  animation: slideInRight 0.3s ease;
  max-width: 360px;
}

.toast.success { border-color: rgba(16,185,129,0.4); }
.toast.success .toast-icon { color: var(--color-success-light); }
.toast.warning { border-color: rgba(245,158,11,0.4); }
.toast.warning .toast-icon { color: var(--color-accent-light); }
.toast.info { border-color: rgba(99,102,241,0.4); }
.toast.info .toast-icon { color: var(--color-primary-light); }

.toast-icon { font-size: 18px; }

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideOutRight {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(30px); }
}

/* === ACHIEVEMENT POPUP === */
.achievement-popup {
  position: fixed;
  top: 90px;
  right: 24px;
  z-index: 1500;
  background: linear-gradient(135deg, rgba(245,158,11,0.15), rgba(251,191,36,0.08));
  border: 1px solid rgba(245,158,11,0.4);
  border-radius: var(--radius-xl);
  padding: 20px 24px;
  box-shadow: var(--shadow-glow-gold);
  backdrop-filter: blur(20px);
  min-width: 300px;
  animation: slideInRight 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.achievement-content { display: flex; align-items: center; gap: 16px; }
.achievement-icon { font-size: 44px; animation: spin-once 0.5s ease 0.2s both; }

@keyframes spin-once {
  from { transform: rotate(-20deg) scale(0.5); }
  to { transform: rotate(0) scale(1); }
}

.achievement-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-light);
  font-weight: 700;
  margin-bottom: 2px;
}
.achievement-title { font-size: 16px; font-weight: 700; margin-bottom: 2px; }
.achievement-desc { font-size: 13px; color: var(--text-secondary); }
.achievement-xp {
  margin-left: auto;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-accent-light);
}

/* === CONFETTI === */
.confetti-canvas {
  position: fixed;
  inset: 0;
  z-index: 3000;
  pointer-events: none;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    padding: 60px 24px;
    text-align: center;
  }
  .hero-visual { display: none; }
  .hero-stats { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-badge { margin: 0 auto 24px; }

  .lesson-layout { flex-direction: column; height: auto; }
  .lesson-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--bg-glass-border);
    max-height: none;
  }
  .lesson-sidebar .sidebar-lessons { max-height: 220px; overflow-y: auto; }
  .lesson-main { padding: 24px; }

  .lc-comparison { grid-template-columns: 1fr; }
  .pd-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --navbar-height: 60px; }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0; right: 0;
    background: var(--bg-secondary);
    padding: 16px;
    border-bottom: 1px solid var(--bg-glass-border);
    z-index: 999;
  }

  /* Hero */
  .hero-title { font-size: 2rem; }
  .hero-stats { flex-wrap: wrap; }
  .stat { padding: 0 12px; }

  /* Grids */
  .modules-grid { grid-template-columns: 1fr; }
  .tools-comparison-grid { grid-template-columns: 1fr; }
  .principles-grid { grid-template-columns: 1fr; }

  /* Module list items — stack vertically on mobile */
  .module-list-item {
    flex-wrap: wrap;
    padding: 20px;
    gap: 12px;
  }
  .mli-icon { font-size: 32px; }
  .mli-content { flex: 1 1 calc(100% - 48px); }
  .mli-title { font-size: 1rem; }
  .mli-title em { display: block; margin-top: 3px; font-size: 0.82rem; }
  .mli-right {
    flex: 0 0 100%;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
  }
  .mli-progress-ring { width: 44px !important; height: 44px !important; }
  .mli-arrow { margin-left: auto; font-size: 18px; }

  /* Module cards */
  .module-card { padding: 20px; }
  .mc-icon { font-size: 28px; }
  .mc-title { font-size: 1rem; }

  /* Quiz */
  .quiz-container { padding: 20px 16px; }
  .quiz-question-card { padding: 24px 20px; }

  /* Progress overview */
  .progress-overview-card { flex-direction: column; gap: 32px; }
  .poc-stats { grid-template-columns: repeat(3, 1fr); }
  .poc-left { width: 100%; display: flex; flex-direction: row; align-items: center; gap: 20px; }

  /* Lesson top bar */
  .lesson-top-bar { flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
  .lesson-breadcrumb { font-size: 11px; }
  .lesson-meta { gap: 8px; }

  /* Lesson navigation buttons */
  .lesson-navigation { flex-wrap: wrap; gap: 10px; padding-top: 20px; }
  .lesson-navigation .btn { flex: 1 1 120px; justify-content: center; font-size: 13px; padding: 10px 12px; }

  /* Lesson content */
  .lesson-main { padding: 16px; }
  .lc-hero { padding: 24px 20px; }
  .lc-hero .lesson-icon { font-size: 36px; }
  .lc-hero h1 { font-size: 1.6rem; }

  /* Nav bar */
  .navbar { padding: 0 16px; }
  .container { padding: 0 16px; }

  /* Nav actions — smaller on mobile */
  .nav-actions { gap: 6px; }
  .nav-xp { padding: 4px 10px; font-size: 12px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn-large { padding: 14px 24px; font-size: 15px; }
  .stat-divider { display: none; }
  .stat { padding: 8px 0; }
  .hero-stats { flex-direction: column; }

  /* Module list items — fully stacked */
  .module-list-item { padding: 16px; }
  .mli-right { gap: 8px; }

  /* Lesson sidebar collapse */
  .lesson-sidebar .sidebar-lessons { max-height: 180px; }

  /* Quiz options full width */
  .quiz-options { gap: 10px; }
  .quiz-option { padding: 14px 16px; }
  .qo-text { font-size: 14px; }

  /* Tools grid */
  .tools-grid { grid-template-columns: 1fr; }

  /* XP badge compact */
  .nav-xp .xp-label { display: none; }
  .nav-xp::after { content: 'XP'; font-size: 10px; }

  /* Poc stats compact */
  .poc-stats { grid-template-columns: repeat(2, 1fr); }

  /* Lesson content */
  .lc-hero-title { font-size: 1.4rem; }
  .lc-block { margin-bottom: 24px; }
}

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(99,102,241,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(99,102,241,0.5); }

/* === SELECTION === */
::selection { background: rgba(99,102,241,0.3); color: var(--text-primary); }

/* === FOCUS === */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   UITBREIDING — EXTRA FEATURES STIJLEN
   ============================================================ */

/* === DAILY TIP === */
.daily-tip-section { padding: 24px 0 0; }

.daily-tip-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(139,92,246,0.08));
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: var(--radius-xl);
  padding: 20px 28px;
  flex-wrap: wrap;
}

.dtc-icon { font-size: 28px; flex: 0 0 auto; }
.dtc-content { flex: 1; min-width: 200px; }
.dtc-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--color-primary-light); margin-bottom: 4px; }
.dtc-text { font-size: 14px; line-height: 1.6; color: var(--text-primary); }
.dtc-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* === GLOSSARY === */
.glossary-search-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.gsb-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  padding: 10px 20px;
  flex: 1;
  min-width: 240px;
  transition: border-color var(--transition-fast);
}
.gsb-input-wrap:focus-within { border-color: var(--color-primary); }

.gsb-icon { font-size: 16px; color: var(--text-muted); }
.gsb-input {
  background: none;
  border: none;
  outline: none;
  font-size: 15px;
  color: var(--text-primary);
  font-family: var(--font-body);
  flex: 1;
  width: 100%;
}
.gsb-input::placeholder { color: var(--text-muted); }
.gsb-clear {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 0 4px;
  transition: color var(--transition-fast);
}
.gsb-clear:hover { color: var(--color-danger); }
.gsb-count { font-size: 13px; color: var(--text-muted); white-space: nowrap; }

.glossary-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.glossary-cat-btn {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--bg-glass-border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}
.glossary-cat-btn:hover { background: var(--bg-card-hover); border-color: var(--color-primary); color: var(--color-primary-light); }
.glossary-cat-btn.active { background: rgba(99,102,241,0.15); border-color: var(--color-primary); color: var(--color-primary-light); font-weight: 700; }

.glossary-list { padding-bottom: 60px; }

.glossary-letter-group { margin-bottom: 32px; }

.glossary-letter {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-primary-light);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(99,102,241,0.2);
}

.glossary-item {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 10px;
  transition: all var(--transition-fast);
}
.glossary-item:hover { background: var(--bg-card-hover); transform: translateX(4px); }

.gi-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.gi-emoji { font-size: 20px; }
.gi-term { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.gi-category {
  margin-left: auto;
  padding: 2px 10px;
  background: rgba(99,102,241,0.12);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-primary-light);
  white-space: nowrap;
}
.gi-definition { font-size: 14px; line-height: 1.7; color: var(--text-secondary); margin-bottom: 6px; }
.gi-example {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  padding: 8px 12px;
  background: rgba(99,102,241,0.06);
  border-radius: var(--radius-sm);
  border-left: 3px solid rgba(99,102,241,0.3);
}
.gi-ex-label { font-style: normal; font-weight: 700; color: var(--color-primary-light); margin-right: 6px; }

mark { background: rgba(245,158,11,0.3); color: inherit; border-radius: 2px; padding: 0 2px; }

.glossary-empty { text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1.1rem; }

/* === PRACTICE LAB === */
.practice-intro {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(52,211,153,0.05));
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: var(--radius-xl);
  margin-bottom: 24px;
}
.practice-intro-icon { font-size: 36px; }
.practice-intro h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.practice-intro p { font-size: 14px; color: var(--text-secondary); }

.practice-levels { display: flex; gap: 8px; margin-bottom: 28px; flex-wrap: wrap; }
.pl-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--bg-glass-border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13px; font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}
.pl-btn:hover { border-color: var(--color-primary); color: var(--color-primary-light); }
.pl-btn.active { background: rgba(99,102,241,0.15); border-color: var(--color-primary); color: var(--color-primary-light); }

.practice-grid { display: flex; flex-direction: column; gap: 16px; padding-bottom: 60px; }

.exercise-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
}
.exercise-card:hover { border-color: rgba(99,102,241,0.3); }

.ex-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  flex-wrap: wrap;
}
.ex-icon { font-size: 32px; flex: 0 0 auto; }
.ex-meta { flex: 1; min-width: 200px; }
.ex-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.ex-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.ex-level {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px; font-weight: 700;
}
.ex-concept {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px; font-weight: 600;
  background: var(--bg-glass);
  color: var(--text-muted);
  border: 1px solid var(--bg-glass-border);
}

.ex-body {
  display: none;
  padding: 0 24px 24px;
  border-top: 1px solid var(--bg-glass-border);
  animation: fadeInUp 0.3s ease;
}
.ex-body.open { display: block; }

.ex-description { font-size: 14px; color: var(--text-secondary); padding: 16px 0 12px; }
.ex-scenario {
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.15);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 16px;
}
.ex-scenario-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--color-primary-light); margin-bottom: 8px; }
.ex-scenario-text { font-size: 14px; line-height: 1.7; }

.ex-hints { margin-bottom: 16px; }
.ex-hints-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--color-accent-light); margin-bottom: 8px; }
.ex-hint { font-size: 13px; color: var(--text-secondary); padding: 3px 0; }

.ex-try-area { margin-bottom: 16px; }
.ex-try-label { font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; }
.ex-textarea {
  width: 100%;
  min-height: 120px;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-primary);
  resize: vertical;
  outline: none;
  transition: border-color var(--transition-fast);
}
.ex-textarea:focus { border-color: var(--color-primary); }
.ex-textarea::placeholder { color: var(--text-muted); }

.ex-actions { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }

.ex-example-prompt {
  display: none;
  background: #0d0f2b;
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 8px;
  animation: fadeInUp 0.3s ease;
}
.light-theme .ex-example-prompt { background: #1e1b4b; }
.ex-example-prompt.visible { display: block; }
.ex-ep-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--color-primary-light); margin-bottom: 12px; }
.ex-example-prompt code {
  font-family: 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.8;
  color: #e2e8f0;
  white-space: pre-wrap;
  display: block;
}

/* === SEARCH === */
.main-search-wrap { margin-top: 20px; }
.main-search-input {
  width: 100%;
  padding: 14px 24px;
  background: var(--bg-card);
  border: 1.5px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}
.main-search-input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.1); }
.main-search-input::placeholder { color: var(--text-muted); }

.search-results-header {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding: 16px 0 0;
}
.search-results-header strong { color: var(--text-primary); }

.search-type-group { margin-bottom: 32px; }
.stg-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--bg-glass-border);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  margin-bottom: 8px;
  transition: all var(--transition-fast);
}
.search-result-item:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99,102,241,0.3);
  transform: translateX(4px);
}

.sri-icon { font-size: 24px; flex: 0 0 auto; }
.sri-content { flex: 1; }
.sri-title { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.sri-subtitle { font-size: 12px; color: var(--text-muted); }
.sri-arrow { color: var(--color-primary-light); font-size: 18px; }

.search-empty { text-align: center; padding: 80px 20px; }
.search-empty p { font-size: 1.05rem; color: var(--text-secondary); margin-top: 12px; }

/* === NOTES PANEL === */
.notes-panel {
  margin-top: 48px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  animation: fadeInUp 0.3s ease;
}

.notes-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.notes-icon { font-size: 20px; }
.notes-title { font-size: 15px; font-weight: 700; flex: 1; }
.notes-saved-indicator { font-size: 12px; color: var(--color-success-light); font-weight: 600; }

.notes-textarea {
  width: 100%;
  min-height: 140px;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-primary);
  resize: vertical;
  outline: none;
  line-height: 1.7;
  transition: border-color var(--transition-fast);
}
.notes-textarea:focus { border-color: var(--color-primary); }
.notes-textarea::placeholder { color: var(--text-muted); }

.notes-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
}
.notes-tip { font-size: 12px; color: var(--text-muted); }

/* === CERTIFICATE === */
.cert-locked { text-align: center; padding: 80px 20px; }
.cert-locked h2 { margin-bottom: 16px; }
.cert-locked p { color: var(--text-secondary); margin-bottom: 24px; }
.cert-progress-bar-wrap {
  height: 10px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  max-width: 400px;
  margin: 0 auto;
}
.cert-pb-fill { height: 100%; background: var(--gradient-primary); border-radius: var(--radius-full); transition: width 1s ease; }

.cert-wrapper { padding: 40px 0 80px; }

.certificate {
  background: white;
  color: #1a1a2e;
  border-radius: var(--radius-xl);
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto 32px;
  box-shadow: 0 20px 80px rgba(0,0,0,0.4);
}

.cert-top-bar {
  height: 12px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #f59e0b, #10b981, #6366f1);
  background-size: 200% 100%;
  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.cert-body { padding: 48px 56px; }

.cert-logo-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 40px;
}
.cert-org { font-family: 'Outfit', sans-serif; font-size: 1.3rem; font-weight: 800; color: #6366f1; }

.cert-label {
  font-family: 'Outfit', sans-serif;
  font-size: 2.4rem;
  font-weight: 900;
  color: #1a1a2e;
  margin-bottom: 8px;
  line-height: 1.1;
}
.cert-presents { font-size: 15px; color: #64748b; margin-bottom: 12px; }
.cert-name {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: #6366f1;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid #e2e8f0;
}
.cert-course { font-size: 15px; color: #475569; margin-bottom: 32px; }
.cert-course em { color: #1a1a2e; font-style: normal; font-weight: 600; }

.cert-stats-row {
  display: flex;
  align-items: center;
  gap: 0;
  background: #f8faff;
  border-radius: 12px;
  padding: 16px 24px;
  margin-bottom: 24px;
  width: fit-content;
}
.cert-stat { display: flex; flex-direction: column; align-items: center; padding: 0 24px; }
.cert-stat span:first-child { font-family: 'Outfit', sans-serif; font-size: 1.6rem; font-weight: 900; color: #6366f1; }
.cert-stat span:last-child { font-size: 12px; color: #64748b; }
.cert-stat-divider { width: 1px; height: 40px; background: #e2e8f0; }

.cert-modules {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}
.cert-module-tag {
  padding: 4px 12px;
  background: #eef2ff;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: #6366f1;
}

.cert-footer { display: flex; align-items: flex-end; justify-content: space-between; }
.cert-date { font-size: 14px; color: #64748b; }
.cert-signature { text-align: center; }
.cert-sig-line { width: 180px; height: 2px; background: #1a1a2e; margin-bottom: 6px; }
.cert-sig-name { font-size: 12px; color: #64748b; }

.cert-bottom-bar { height: 8px; background: linear-gradient(90deg, #6366f1, #8b5cf6); }

.cert-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.cert-name-input {
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}
.cert-name-input:focus { border-color: var(--color-primary); }
.cert-name-input::placeholder { color: var(--text-muted); }

/* === QUICK REFERENCE === */
.qr-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  padding: 20px 0;
  border-bottom: 1px solid var(--bg-glass-border);
}
.qr-title { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 700; }

.qr-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; padding-bottom: 60px; }

.qr-section {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 24px;
}
.qr-section-title { font-size: 15px; font-weight: 700; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--bg-glass-border); }

.qr-item { margin-bottom: 14px; }
.qri-label { font-size: 12px; font-weight: 700; color: var(--color-primary-light); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 4px; }
.qri-value {
  font-family: 'Courier New', monospace;
  font-size: 13px;
  background: rgba(99,102,241,0.06);
  border: 1px solid rgba(99,102,241,0.15);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === KEYBOARD SHORTCUTS MODAL === */
.kb-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
  backdrop-filter: blur(4px);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.kb-modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 420px;
  width: 90%;
  box-shadow: var(--shadow-lg);
}
.kb-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.kb-modal-header h3 { font-size: 1.15rem; font-weight: 700; }
.kb-modal-header button {
  background: none; border: none; color: var(--text-muted); font-size: 18px; cursor: pointer;
}

.kb-shortcuts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kb-shortcut { display: flex; align-items: center; gap: 10px; }

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 28px;
  padding: 0 8px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-bottom-width: 2px;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary-light);
}

.kb-hint-btn { font-size: 14px !important; }

/* === MICRO-ANIMATIONS & POLISH === */
.module-card { transition: all 0.3s cubic-bezier(0.34, 1.2, 0.64, 1); }
.module-card:hover { transform: translateY(-6px) scale(1.01); }

.sidebar-lesson-item { position: relative; overflow: hidden; }
.sidebar-lesson-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(99,102,241,0.08));
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.sidebar-lesson-item:hover::after { opacity: 1; }

.btn { position: relative; overflow: hidden; }
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  opacity: 0;
  transition: opacity var(--transition-fast);
  border-radius: inherit;
}
.btn:active::after { opacity: 1; }

.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  right: 50%;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: all var(--transition-normal);
}
.nav-link.active::after { left: 12px; right: 12px; }

.lc-hero { animation: slideInUp 0.5s ease; }
@keyframes slideInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === RESPONSIVE NEW FEATURES === */
@media (max-width: 768px) {
  .cert-body { padding: 28px 24px; }
  .cert-label { font-size: 1.6rem; }
  .cert-name { font-size: 1.4rem; }
  .cert-stats-row { flex-wrap: wrap; gap: 16px; }
  .cert-stat-divider { display: none; }
  .qr-grid { grid-template-columns: 1fr; }
  .kb-shortcuts { grid-template-columns: 1fr; }
  .practice-intro { flex-direction: column; text-align: center; }
  .daily-tip-card { flex-direction: column; text-align: center; }
}