/* style.css - Vencanto TKA Matematika Design System */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&family=Merienda:wght@600;700;800&family=Nunito:ital,wght@0,300;0,400;0,600;0,700;0,800;1,400&display=swap');

:root {
  /* Vencanto Botanical Palette */
  --primary: #E84A8A;
  --primary-hover: #D23877;
  --primary-subtle: #FDF0F6;
  --primary-border: #F7B5D2;
  
  --secondary: #7B4FA3;
  --secondary-hover: #673E8B;
  --secondary-subtle: #F3EEF9;
  
  --gold: #F6C445;
  --gold-subtle: #FEF8E9;
  
  --green: #3F8F5B;
  --green-subtle: #EDF7F1;
  
  --leaf: #79B84A;
  --cyan: #55B8D9;
  --cyan-subtle: #EFF9FC;
  
  --danger: #E54B4B;
  --danger-subtle: #FDF0F0;
  
  /* Light Theme Surfaces */
  --bg-body: #FDFBF7;
  --bg-sidebar: #FAF6EE;
  --bg-card: #FFFFFF;
  --bg-card-subtle: #FFFDF9;
  --bg-pill: #F2ECE1;
  --bg-code: #F5EFE4;
  
  --border: #E8DECF;
  --border-light: #F2ECE1;
  --border-focus: #E84A8A;
  
  --text-main: #2A202E;
  --text-secondary: #635568;
  --text-muted: #95859B;
  --text-inverse: #FFFFFF;
  
  --shadow-sm: 0 2px 6px rgba(123, 79, 163, 0.04);
  --shadow-md: 0 6px 18px rgba(123, 79, 163, 0.07);
  --shadow-lg: 0 12px 32px rgba(123, 79, 163, 0.12);
  --shadow-primary: 0 6px 16px rgba(232, 74, 138, 0.25);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 290px;
  --header-height: 68px;
}

/* Dark Theme Variables */
body.dark-theme {
  --primary: #FF6BA6;
  --primary-hover: #E84A8A;
  --primary-subtle: #3A1828;
  --primary-border: #75294E;
  
  --secondary: #9B70C4;
  --secondary-hover: #B48FE0;
  --secondary-subtle: #291B36;
  
  --gold: #FFD25F;
  --gold-subtle: #33270A;
  
  --green: #4ADE80;
  --green-subtle: #12331E;
  
  --cyan: #67D5F7;
  --cyan-subtle: #0F2D38;
  
  --danger: #FF6B6B;
  --danger-subtle: #3D1414;
  
  --bg-body: #161219;
  --bg-sidebar: #1E1724;
  --bg-card: #251E2D;
  --bg-card-subtle: #2C2436;
  --bg-pill: #362D42;
  --bg-code: #1A1421;
  
  --border: #3A2F47;
  --border-light: #2E2538;
  
  --text-main: #F5EEF8;
  --text-secondary: #C7BACD;
  --text-muted: #8E7F94;
  --text-inverse: #161219;
  
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-primary: 0 6px 16px rgba(255, 107, 166, 0.3);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  max-width: 100%;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: 'Nunito', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.65;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, .brand-title {
  font-family: 'Merienda', cursive, serif;
  color: var(--text-main);
  line-height: 1.3;
}

h4, h5, h6, .btn, .badge, .stat-num, .tab-btn {
  font-family: 'DM Sans', sans-serif;
}

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

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

/* KaTeX Math Tweaks */
.katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 14px 18px;
  margin: 16px 0;
  background: var(--bg-card-subtle);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  text-align: center;
}

.katex {
  font-size: 1.1em;
}

.symbol-badge {
  display: inline-block;
  background: var(--bg-card);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  margin: 2px 4px 4px 0;
  font-size: 0.88rem;
  color: var(--text-main);
}

.symbol-badge code {
  color: var(--primary);
  font-weight: 700;
  font-family: monospace;
}

/* App Container */
.app-layout {
  display: flex;
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.sidebar-close-btn {
  display: none;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  font-size: 1.15rem;
  font-weight: 700;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
  padding: 0;
  line-height: 1;
}

.sidebar-close-btn:hover,
.sidebar-close-btn:active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Sidebar Backdrop Overlay for Mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 12, 18, 0.55);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 95;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

body.sidebar-open-locked {
  overflow: hidden;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--primary);
}

.brand-info h2 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 2px;
}

.brand-info span {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.sidebar-summary {
  padding: 14px 20px;
  background: var(--bg-card-subtle);
  border-bottom: 1px solid var(--border);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.progress-bar-wrap {
  width: 100%;
  height: 8px;
  background: var(--bg-pill);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  width: 0%;
  transition: width 0.4s ease;
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
}

.sidebar-nav-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 700;
  margin: 10px 8px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  margin-bottom: 4px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.nav-item:hover {
  background: var(--bg-card);
  color: var(--primary);
  border-color: var(--border-light);
}

.nav-item.active {
  background: var(--primary-subtle);
  color: var(--primary);
  font-weight: 700;
  border-color: var(--primary-border);
}

.nav-item-left {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}

.nav-item-icon {
  font-size: 1.15rem;
  flex-shrink: 0;
}

.nav-item-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item-badge {
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  background: var(--bg-pill);
  color: var(--text-muted);
  font-weight: 700;
}

.nav-item.active .nav-item-badge {
  background: var(--primary);
  color: #fff;
}

.nav-check-badge {
  font-size: 0.78rem;
  color: var(--green);
  font-weight: 700;
}

/* Top Navbar */
.main-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  max-width: 100%;
  width: 100%;
  overflow-x: hidden;
}

.top-navbar {
  height: var(--header-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--shadow-sm);
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.35rem;
  color: var(--text-main);
  cursor: pointer;
}

.search-trigger-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition);
  min-width: 240px;
}

.search-trigger-btn:hover {
  border-color: var(--primary);
  color: var(--text-secondary);
}

.search-shortcut {
  font-size: 0.72rem;
  background: var(--bg-pill);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: auto;
  border: 1px solid var(--border);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.quick-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: var(--transition);
}

.quick-btn:hover {
  background: var(--bg-card-subtle);
  color: var(--primary);
  border-color: var(--primary);
}

.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.15rem;
  transition: var(--transition);
}

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

/* Main Content Area */
.content-area {
  flex: 1;
  padding: 28px;
  max-width: 1240px;
  width: 100%;
  min-width: 0;
  margin: 0 auto;
  box-sizing: border-box;
  overflow-x: hidden;
}

/* Dashboard View */
.dashboard-hero {
  background: linear-gradient(135deg, var(--primary-subtle) 0%, var(--secondary-subtle) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.dashboard-hero::before {
  content: "🌿";
  position: absolute;
  right: -20px;
  bottom: -25px;
  font-size: 140px;
  opacity: 0.12;
  pointer-events: none;
}

.hero-text h1 {
  font-size: 2.1rem;
  margin-bottom: 10px;
  color: var(--text-main);
}

.hero-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 620px;
  margin-bottom: 20px;
}

.hero-actions {
  display: flex;
  gap: 12px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #FFFFFF;
  border: none;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-primary);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.hero-stats {
  display: flex;
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  min-width: 120px;
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 4px;
}

/* Topics Grid on Dashboard */
.section-title-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.section-title {
  font-size: 1.45rem;
  color: var(--text-main);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
  margin-bottom: 40px;
}

.topic-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

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

.topic-card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.topic-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-subtle);
  color: var(--primary);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.topic-card-meta h3 {
  font-size: 1.12rem;
  margin-bottom: 4px;
}

.topic-card-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.badge-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--bg-pill);
  color: var(--text-secondary);
}

.badge-tag.pink {
  background: var(--primary-subtle);
  color: var(--primary);
}

.badge-tag.purple {
  background: var(--secondary-subtle);
  color: var(--secondary);
}

.badge-tag.gold {
  background: var(--gold-subtle);
  color: #B28206;
}

.topic-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
  line-height: 1.5;
}

.topic-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.topic-card-footer span {
  font-weight: 600;
}

/* Topic Study View */
.topic-study-view {
  display: none;
}

.topic-header-banner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.topic-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 12px;
}

.topic-breadcrumb a {
  color: var(--primary);
}

.topic-header-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.topic-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topic-header-icon {
  font-size: 2.2rem;
  width: 58px;
  height: 58px;
  background: var(--primary-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.topic-header-titles h1 {
  font-size: 1.8rem;
  margin-bottom: 4px;
}

.topic-header-badges {
  display: flex;
  gap: 8px;
}

/* 12 Sub-Section Tabs */
.sticky-tabs-container {
  position: sticky;
  top: var(--header-height);
  z-index: 80;
  background: var(--bg-body);
  padding: 10px 0 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.tabs-scroll-wrap {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.tabs-scroll-wrap::-webkit-scrollbar {
  height: 4px;
}
.tabs-scroll-wrap::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.tab-btn {
  flex-shrink: 0;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.tab-btn.active {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(232, 74, 138, 0.25);
}

/* Sub-Section Content Panes */
.tab-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Content Box Cards */
.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.content-card h2 {
  font-size: 1.4rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  border-bottom: 2px solid var(--primary-subtle);
  padding-bottom: 10px;
}

.content-card h3 {
  font-size: 1.15rem;
  margin: 20px 0 10px;
  color: var(--secondary);
}

.content-card p {
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.content-card ul, .content-card ol {
  margin-left: 24px;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.content-card li {
  margin-bottom: 8px;
}

/* Formula Bank Cards */
.formula-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.formula-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  border-left: 4px solid var(--primary);
}

.formula-card-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.formula-latex-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 12px;
  text-align: center;
}

.formula-detail {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.formula-detail strong {
  color: var(--text-main);
}

/* Callout Alerts */
.callout {
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 16px 0;
  border-left: 4px solid;
  font-size: 0.92rem;
}

.callout-info {
  background: var(--cyan-subtle);
  border-color: var(--cyan);
  color: var(--text-main);
}

.callout-warning {
  background: var(--danger-subtle);
  border-color: var(--danger);
  color: var(--text-main);
}

.callout-success {
  background: var(--green-subtle);
  border-color: var(--green);
  color: var(--text-main);
}

.callout-tip {
  background: var(--gold-subtle);
  border-color: var(--gold);
  color: var(--text-main);
}

/* Algorithm Timeline Steps (How to Solve) */
.algorithm-steps {
  position: relative;
  padding-left: 32px;
  margin: 20px 0;
}

.algorithm-steps::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 10px;
  bottom: 20px;
  width: 2px;
  background: var(--border);
}

.algo-step-item {
  position: relative;
  margin-bottom: 22px;
}

.algo-step-num {
  position: absolute;
  left: -32px;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 800;
  box-shadow: 0 0 0 4px var(--bg-card);
}

.algo-step-content h4 {
  font-size: 1.02rem;
  margin-bottom: 4px;
  color: var(--text-main);
}

.algo-step-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Practice Questions Section */
.practice-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.difficulty-tabs {
  display: flex;
  gap: 6px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  padding: 4px;
  border-radius: var(--radius-pill);
}

.diff-tab-btn {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.diff-tab-btn.active {
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.practice-stats-badge {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--primary-subtle);
  color: var(--primary);
}

/* Practice Question Cards */
.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.question-card:hover {
  border-color: var(--primary-border);
}

.question-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.question-num-tag {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--primary);
}

.question-badges {
  display: flex;
  gap: 6px;
}

.question-body {
  font-size: 1.02rem;
  color: var(--text-main);
  margin-bottom: 20px;
  line-height: 1.6;
}

/* Options */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border);
  background: var(--bg-card-subtle);
  cursor: pointer;
  transition: var(--transition);
}

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

.option-item.selected {
  border-color: var(--primary);
  background: var(--primary-subtle);
}

.option-key {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--text-main);
  flex-shrink: 0;
  transition: var(--transition);
}

.option-item.selected .option-key {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.option-text {
  font-size: 0.95rem;
  color: var(--text-main);
  flex: 1;
}

/* Evaluated Options */
.option-item.correct {
  border-color: var(--green) !important;
  background: var(--green-subtle) !important;
}

.option-item.correct .option-key {
  background: var(--green) !important;
  color: #fff !important;
  border-color: var(--green) !important;
}

.option-item.incorrect {
  border-color: var(--danger) !important;
  background: var(--danger-subtle) !important;
}

.option-item.incorrect .option-key {
  background: var(--danger) !important;
  color: #fff !important;
  border-color: var(--danger) !important;
}

/* Question Action Footer */
.question-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-submit-answer {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-submit-answer:hover {
  background: var(--primary-hover);
}

.btn-submit-answer:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-retry-question {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: none;
  transition: var(--transition);
}

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

/* Hidden Solution Box (Revealed ONLY after submit) */
.solution-box {
  display: none;
  margin-top: 20px;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  animation: fadeIn 0.3s ease;
}

.solution-box.revealed {
  display: block;
}

.solution-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--secondary);
}

.solution-steps {
  font-size: 0.93rem;
  color: var(--text-main);
  line-height: 1.7;
  margin-bottom: 14px;
}

.solution-meta-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
}

.concept-tag-box {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.concept-tag-box strong {
  color: var(--primary);
  display: block;
  margin-bottom: 2px;
}

.trap-tag-box {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.trap-tag-box strong {
  color: var(--danger);
  display: block;
  margin-bottom: 2px;
}

/* Master Check Checklist */
.master-check-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0;
}

.master-check-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card-subtle);
  cursor: pointer;
  transition: var(--transition);
}

.master-check-item:hover {
  background: var(--bg-card);
  border-color: var(--green);
}

.master-check-item.checked {
  background: var(--green-subtle);
  border-color: var(--green);
}

.master-check-checkbox {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  color: transparent;
  font-weight: 900;
  font-size: 0.82rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.master-check-item.checked .master-check-checkbox {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.master-check-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  flex: 1;
}

.master-check-item.checked .master-check-text {
  color: var(--text-secondary);
  text-decoration: line-through;
}

/* Mini Quiz Engine */
.mini-quiz-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
}

.quiz-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.quiz-timer-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--gold-subtle);
  color: #B28206;
  font-weight: 800;
  font-size: 0.9rem;
}

.quiz-result-box {
  display: none;
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius-lg);
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
}

.quiz-result-box.active {
  display: block;
}

.quiz-score-circle {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-primary);
}

.quiz-score-num {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
}

.quiz-score-sub {
  font-size: 0.72rem;
  text-transform: uppercase;
  font-weight: 700;
}

/* Search Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(22, 18, 25, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 80px 20px;
}

.modal-backdrop.open {
  display: flex;
}

.modal-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalScale 0.25s ease;
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 1.1rem;
  color: var(--text-main);
  outline: none;
  font-family: inherit;
}

.search-results-list {
  max-height: 380px;
  overflow-y: auto;
  padding: 12px;
}

.search-result-item {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

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

.search-result-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.search-result-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Mobile Menu Trigger Base (Hidden on Desktop) */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: 1.35rem;
  color: var(--text-main);
  transition: all 0.2s ease;
}

.mobile-menu-btn:hover,
.mobile-menu-btn:active {
  background: var(--bg-hover, var(--primary-subtle));
  border-color: var(--primary);
}

/* Mobile Bottom Navigation Bar (Option B - Base Hidden on Desktop) */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(253, 251, 247, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  z-index: 999;
  justify-content: space-around;
  align-items: center;
  padding-bottom: max(4px, env(safe-area-inset-bottom));
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.05);
}

body.dark-theme .mobile-bottom-nav {
  background: rgba(22, 18, 25, 0.96);
  border-top-color: var(--border);
}

.bottom-nav-item {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px 0;
  gap: 3px;
  min-width: 44px;
  min-height: 44px;
  transition: var(--transition);
}

.bottom-nav-icon {
  font-size: 1.25rem;
  line-height: 1;
}

.bottom-nav-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.bottom-nav-item:hover,
.bottom-nav-item.active {
  color: var(--primary);
}

.bottom-nav-item.active .bottom-nav-icon {
  transform: scale(1.12);
}

/* Subtopic Quiz Progress Indicator Track */
.subtopic-quiz-progress-header {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 16px;
}

.quiz-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.quiz-progress-bar-track {
  width: 100%;
  height: 8px;
  background: var(--border-light);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.quiz-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-pill);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   SUBTOPIC & GRANULAR LEARNING PLATFORM STYLES (VENCANTO BOTANICAL THEME)
   ========================================================================== */

/* Subtopic Navigation Bar */
.subtopic-nav-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px 12px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 76px;
  z-index: 95;
  backdrop-filter: blur(10px);
}

.subtopic-nav-scroll {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  padding-bottom: 4px;
}

.subtopic-nav-scroll::-webkit-scrollbar {
  height: 4px;
}

.subtopic-nav-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.subtopic-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg-card-subtle);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.subtopic-pill:hover {
  background: var(--primary-subtle);
  color: var(--primary);
  border-color: var(--primary);
}

.subtopic-pill.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(232, 74, 138, 0.25);
}

.subtopic-pill-badge {
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.08);
}

.subtopic-pill.active .subtopic-pill-badge {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.subtopic-pill.completed {
  border-color: #3F8F5B;
}

/* Chapter Overview & Peta Sub-Bab */
.overview-hero-card {
  background: linear-gradient(135deg, rgba(232, 74, 138, 0.06), rgba(123, 79, 163, 0.06));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 28px;
}

.overview-hero-card h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 12px;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.overview-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.overview-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Roadmap Grid */
.roadmap-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
  margin-bottom: 36px;
}

.roadmap-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

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

.roadmap-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.roadmap-num-badge {
  font-size: 0.82rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--primary-subtle);
  color: var(--primary);
}

.roadmap-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.roadmap-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 16px;
  flex: 1;
}

.roadmap-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
}

.roadmap-action-btn {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 16 Subtopic Components */
.subtopic-article {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.component-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}

.component-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border-light);
}

.component-num-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
}

.component-title {
  font-size: 1.28rem;
  font-weight: 800;
  color: var(--secondary);
  margin: 0;
}

/* 9 Langkah Tutorial Vertikal */
.steps-9-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-9-box {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-card-subtle);
  border-left: 4px solid var(--primary);
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

.step-9-badge {
  flex-shrink: 0;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--primary-subtle);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
}

.step-9-text {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-main);
  flex: 1;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* Aturan Perhitungan Wajib Vertikal & Jangan Skip */
.vertical-calc-table {
  width: 100%;
  max-width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 16px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow-x: auto;
  display: block;
}

.vertical-calc-table th {
  background: var(--bg-card-subtle);
  padding: 12px 16px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.vertical-calc-table td {
  padding: 14px 16px;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-main);
  word-break: break-word;
}

.vertical-calc-table tr:last-child td {
  border-bottom: none;
}

.calc-step-label {
  font-weight: 700;
  color: var(--primary);
}

/* Multi-Metode Card Grid */
.multi-metode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin: 16px 0;
}

.metode-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.metode-card h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 8px;
}

/* Subtopic Interactive Mini Quiz */
.subtopic-quiz-wrap {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 16px;
}

.subtopic-quiz-item {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.subtopic-quiz-item.correct {
  border-color: #3F8F5B;
  background: rgba(63, 143, 91, 0.05);
}

.subtopic-quiz-item.wrong {
  border-color: #E54B4B;
  background: rgba(229, 75, 75, 0.05);
}

.quiz-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.quiz-level-tag {
  font-size: 0.76rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
}

.quiz-options-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0;
}

.quiz-option-button {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 0.92rem;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
  width: 100%;
}

.quiz-option-button:hover:not(:disabled) {
  background: var(--primary-subtle);
  border-color: var(--primary);
}

.quiz-option-button.selected {
  background: var(--primary-subtle);
  border-color: var(--primary);
  font-weight: 700;
  color: var(--primary);
}

.quiz-option-button.ans-correct {
  background: rgba(63, 143, 91, 0.15);
  border-color: #3F8F5B;
  color: #3F8F5B;
  font-weight: 800;
}

.quiz-option-button.ans-wrong {
  background: rgba(229, 75, 75, 0.15);
  border-color: #E54B4B;
  color: #E54B4B;
  text-decoration: line-through;
}

.quiz-feedback-container {
  display: none;
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
  background: var(--bg-card);
  font-size: 0.9rem;
  line-height: 1.6;
}

.quiz-feedback-container.show {
  display: block;
}

.quiz-control-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}


/* Master Sub-Bab Schema Enhancements */
.recognition-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 5px solid var(--secondary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 14px;
}

.recog-flow {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.recog-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.recog-badge {
  font-size: 0.76rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.recog-badge.trigger {
  background: rgba(232, 74, 138, 0.12);
  color: var(--primary);
}

.recog-badge.concept {
  background: rgba(123, 79, 163, 0.12);
  color: var(--secondary);
}

.recog-badge.method {
  background: rgba(63, 143, 91, 0.12);
  color: #3F8F5B;
}

.recog-arrow {
  color: var(--text-muted);
  font-weight: 800;
  margin-left: 20px;
}

/* Strategy 3-Phase Grid */
.strategy-phase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 16px 0;
}

.strategy-phase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
}

.strategy-phase-card.phase-1 {
  border-top: 4px solid var(--secondary);
}

.strategy-phase-card.phase-2 {
  border-top: 4px solid var(--primary);
}

.strategy-phase-card.phase-3 {
  border-top: 4px solid #3F8F5B;
}

.strategy-phase-card h4 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.strategy-phase-card ul {
  padding-left: 18px;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Trap Section (🪤 Jebakan TKA) */
.trap-card {
  background: rgba(229, 75, 75, 0.04);
  border: 1px solid rgba(229, 75, 75, 0.25);
  border-left: 5px solid #E54B4B;
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 16px;
}

.trap-card h4 {
  color: #E54B4B;
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.trap-field {
  margin-bottom: 8px;
  font-size: 0.91rem;
  line-height: 1.6;
}

.trap-field strong {
  color: var(--text-main);
}

.trap-recognition-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 14px;
}

.anti-trap-checklist {
  background: rgba(246, 196, 69, 0.08);
  border: 1px solid rgba(246, 196, 69, 0.35);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.anti-trap-checklist h4 {
  color: #B28206;
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.anti-trap-checklist ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.anti-trap-checklist li {
  padding: 6px 0;
  font-size: 0.92rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.anti-trap-checklist li::before {
  content: "✅";
  font-size: 0.9rem;
}

/* Tips & Trik Grid */
.tips-trik-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
  margin: 14px 0;
}

.tip-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.tip-box h4 {
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.tip-box p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

/* HOTS Strategy Box */
.hots-box {
  background: linear-gradient(135deg, rgba(123, 79, 163, 0.08), rgba(232, 74, 138, 0.08));
  border: 1px solid rgba(123, 79, 163, 0.25);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 16px;
}

.hots-box h4 {
  color: var(--secondary);
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 8px;
}

/* ==========================================================================
   TRUE RESPONSIVE MULTI-BREAKPOINT ARCHITECTURE (MOBILE-FIRST STANDARD)
   Breakpoints:
   - Desktop:  >= 1024px
   - Tablet:   768px - 1023px
   - Mobile:   <= 767px (with sub-rules for <= 480px and <= 360px)
   ========================================================================== */

/* --------------------------------------------------------------------------
   DESKTOP VIEWPORT (>= 1024px)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  .sidebar {
    transform: none !important;
    position: fixed !important;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    z-index: 100;
  }
  .sidebar-close-btn {
    display: none !important;
  }
  .mobile-menu-btn {
    display: none !important;
  }
  .sidebar-overlay {
    display: none !important;
  }
  .main-wrapper {
    margin-left: var(--sidebar-width) !important;
    width: calc(100% - var(--sidebar-width)) !important;
  }
  .mobile-bottom-nav {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
   TABLET VIEWPORT (768px - 1023px)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) and (max-width: 1023px) {
  .sidebar {
    transform: translateX(-100%);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(340px, 80vw);
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 6px 0 35px rgba(0, 0, 0, 0.35);
  }
  .sidebar-close-btn {
    display: inline-flex !important;
  }
  .mobile-menu-btn {
    display: inline-flex !important;
  }
  .main-wrapper {
    margin-left: 0 !important;
    width: 100% !important;
  }
  .content-area {
    padding: 24px 20px !important;
    max-width: 100%;
  }
  .topics-grid,
  .roadmap-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 18px !important;
  }
  .mobile-bottom-nav {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
   MOBILE VIEWPORT (<= 767px) - TRUE NATIVE MOBILE EXPERIENCE
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  /* 1. TYPOGRAPHY MOBILE ENFORCEMENT - BESARKAN FONT SECARA SIGNIFIKAN (ULTRA READABLE) */
  :root {
    font-size: 20px !important;
  }

  html {
    font-size: 20px !important;
    -webkit-text-size-adjust: 100% !important;
    -moz-text-size-adjust: 100% !important;
    text-size-adjust: 100% !important;
  }

  body {
    font-size: 20px !important;
    line-height: 1.75 !important;
    font-weight: 500 !important;
    -webkit-text-size-adjust: 100% !important;
    -moz-text-size-adjust: 100% !important;
    text-size-adjust: 100% !important;
  }

  /* Body / Isi materi / Teks penjelasan panjang / Seluruh paragraf: 19.5px - 20px */
  p,
  li,
  .hero-text p,
  .roadmap-card p,
  .topic-card-desc,
  .overview-box p,
  .overview-box li,
  .step-9-text,
  .callout,
  .callout p,
  .trap-field,
  .trap-recognition-box,
  .tip-box p,
  .hots-box p,
  .solution-steps,
  .solution-steps li,
  .explanation-text,
  .explanation-text ol,
  .explanation-text li,
  .recog-step div,
  .recog-step span,
  .anti-trap-checklist li,
  .common-mistake-box,
  .common-mistake-box div,
  .quick-review-item p,
  .subtopic-article p,
  .subtopic-article li,
  .content-card p,
  .content-card li,
  .overview-hero-card p,
  .formula-detail,
  .algo-step-content p,
  .master-check-text,
  .strategy-phase-card ul,
  .strategy-phase-card li,
  .recognition-box div,
  .content-card div,
  .metode-card p {
    font-size: 19.5px !important;
    line-height: 1.75 !important;
    font-weight: 500 !important;
  }

  /* Teks penting / kata kunci: 19.5px, bold */
  strong,
  b,
  .important-text,
  .calc-step-label {
    font-size: 19.5px !important;
    font-weight: 800 !important;
  }

  /* Heading BAB (H1): 32px - 36px */
  h1,
  .hero-text h1,
  .topic-header-titles h1,
  .overview-hero-card h1,
  .subtopic-article h1 {
    font-size: clamp(32px, 8vw, 36px) !important;
    line-height: 1.25 !important;
    letter-spacing: -0.3px;
    font-weight: 900 !important;
  }

  /* Heading SUB-BAB (H2): 26px - 30px */
  h2,
  .section-title,
  .overview-hero-card h2,
  .component-title,
  .content-card h2,
  .subtopic-title-main {
    font-size: clamp(26px, 6.5vw, 30px) !important;
    line-height: 1.3 !important;
    font-weight: 800 !important;
  }

  /* Subheading (H3 / H4): 22px - 25px */
  h3,
  .topic-card-meta h3,
  .roadmap-card h3,
  .strategy-phase-card h4,
  .trap-card h4,
  .hots-box h4,
  .tip-box h4,
  .metode-card h4,
  .component-card h4,
  .overview-box h4,
  .algo-step-content h4,
  .anti-trap-checklist h4,
  .formula-card-title {
    font-size: clamp(22px, 5.5vw, 24px) !important;
    line-height: 1.35 !important;
    font-weight: 800 !important;
  }

  /* Soal TKA: 21px (line-height 1.75, semibold/bold, high contrast) */
  .question-body,
  .subtopic-quiz-question-text,
  .quiz-question-text,
  .example-question-text {
    font-size: 21px !important;
    line-height: 1.75 !important;
    font-weight: 700 !important;
    color: var(--text-main) !important;
  }

  /* Pilihan Jawaban: 19.5px */
  .quiz-option-button,
  .option-item {
    min-height: 56px !important;
    padding: 14px 18px !important;
    font-size: 19.5px !important;
    line-height: 1.6 !important;
  }
  .quiz-option-button span,
  .option-text {
    font-size: 19.5px !important;
    line-height: 1.6 !important;
  }
  .option-key {
    font-size: 19.5px !important;
    width: 38px !important;
    height: 38px !important;
    font-weight: 800 !important;
  }

  /* Langkah Pengerjaan: Heading 17.5px, Isi 19.5px */
  .steps-9-container {
    gap: 14px !important;
  }
  .step-9-box {
    padding: 16px 18px !important;
  }
  .step-9-badge,
  .algo-step-num {
    font-size: 17.5px !important;
    padding: 6px 14px !important;
    font-weight: 800 !important;
  }
  .step-9-text {
    font-size: 19.5px !important;
    line-height: 1.75 !important;
  }

  /* Jebakan TKA: Judul 22-24px, Isi 19.5px */
  .trap-card h4 {
    font-size: clamp(22px, 5.5vw, 24px) !important;
    font-weight: 800 !important;
  }
  .trap-field,
  .trap-recognition-box {
    font-size: 19.5px !important;
    line-height: 1.72 !important;
  }

  /* Tips & Trik: Judul 22-24px, Isi 19.5px */
  .tip-box h4 {
    font-size: clamp(22px, 5.5vw, 24px) !important;
    font-weight: 800 !important;
  }
  .tip-box p {
    font-size: 19.5px !important;
    line-height: 1.72 !important;
  }

  /* Kesalahan Umum: Judul 22-24px, Isi 19.5px */
  .common-mistake-box {
    font-size: 19.5px !important;
    line-height: 1.72 !important;
  }
  .common-mistake-box div {
    font-size: 19.5px !important;
    line-height: 1.72 !important;
  }

  /* Quick Review: 19.5px */
  .quick-review-item p {
    font-size: 19.5px !important;
    line-height: 1.72 !important;
  }

  /* Rumus: KaTeX Display 26px, Formula Utama 28px */
  .katex-display {
    max-width: 100% !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    padding: 16px 14px !important;
    margin: 18px 0 !important;
    -webkit-overflow-scrolling: touch !important;
    border-radius: var(--radius-sm) !important;
    font-size: 26px !important;
    border: 1px solid var(--border-light) !important;
    background: var(--bg-card-subtle) !important;
    line-height: 1.4 !important;
  }
  .katex-display > .katex {
    max-width: none !important;
    text-align: center !important;
    font-size: 26px !important;
  }
  .katex {
    font-size: 1.22em !important;
  }
  .formula-card .katex-display,
  .main-formula-box .katex-display {
    font-size: 28px !important;
  }
  .formula-card .katex-display > .katex,
  .main-formula-box .katex-display > .katex {
    font-size: 28px !important;
  }

  /* Table & Data: 17px */
  table,
  .tutorial-step-table,
  .vertical-calc-table {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    margin: 14px 0 !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-md) !important;
  }
  table th,
  table td,
  .vertical-calc-table th,
  .vertical-calc-table td {
    padding: 12px 14px !important;
    font-size: 17px !important;
    line-height: 1.6 !important;
    white-space: normal !important;
  }

  /* Button: 18.5px, semibold/bold, min height 52px */
  .btn-primary,
  .btn-secondary,
  .btn-submit-answer,
  .btn-retry-question,
  .tab-btn,
  .diff-tab-btn,
  .hero-actions button,
  .roadmap-action-btn {
    min-height: 52px !important;
    padding: 13px 22px !important;
    font-size: 18.5px !important;
    font-weight: 700 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  /* Navigasi: 17.5px - 18.5px */
  .subtopic-pill {
    min-height: 48px !important;
    padding: 11px 20px !important;
    font-size: 18px !important;
    font-weight: 700 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
  }
  .nav-item {
    min-height: 48px !important;
    padding: 12px 18px !important;
  }
  .nav-item-text {
    font-size: 18px !important;
    font-weight: 600 !important;
  }
  .sidebar-nav-title {
    font-size: 16px !important;
  }

  /* Label / Card Content / Badges / Metadata / Chips: 16.5px (Tak ada teks kecil di bawah 16px) */
  .badge-tag,
  .stat-label,
  .roadmap-num-badge,
  .subtopic-pill-badge,
  .quiz-level-tag,
  .recog-badge,
  .concept-tag-box,
  .trap-tag-box,
  .practice-stats-badge,
  .question-num-tag,
  .component-num-tag,
  .symbol-badge,
  .brand-info span,
  .progress-header,
  .search-result-sub,
  .topic-breadcrumb,
  .caption-meta,
  .quiz-meta-row,
  .quiz-timer-badge,
  .quiz-progress-info,
  .topic-card-footer {
    font-size: 16.5px !important;
    line-height: 1.4 !important;
  }

  /* Stat Number */
  .stat-num {
    font-size: 1.8rem !important;
  }

  /* Mobile Bottom Nav */
  .bottom-nav-label {
    font-size: 14px !important;
    font-weight: 700 !important;
  }
  .bottom-nav-icon {
    font-size: 1.45rem !important;
  }

  /* 2. TOUCH TARGETS (>= 44px standard) */
  .mobile-menu-btn,
  .theme-toggle-btn,
  .sidebar-close-btn {
    width: 44px !important;
    height: 44px !important;
    min-width: 44px !important;
    min-height: 44px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .search-trigger-btn {
    min-height: 44px !important;
    padding: 10px 14px !important;
    font-size: 16px !important;
  }

  /* 3. APP LAYOUT & DRAWER */
  .sidebar {
    transform: translateX(-100%);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(320px, 86vw);
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 6px 0 35px rgba(0, 0, 0, 0.35);
  }
  .main-wrapper {
    margin-left: 0 !important;
    width: 100% !important;
    max-width: 100vw !important;
    min-width: 0 !important;
    overflow-x: hidden !important;
  }

  /* 4. TOP NAVBAR */
  .top-navbar {
    padding: 0 14px;
    height: 60px;
    gap: 10px;
  }
  .navbar-left {
    gap: 10px;
    flex: 1;
    min-width: 0;
  }
  .search-shortcut {
    display: none !important;
  }
  .navbar-right {
    gap: 8px;
    flex-shrink: 0;
  }
  .navbar-right .quick-btn {
    display: none !important;
  }

  /* 5. CONTENT CONTAINER & SPACING */
  .content-area {
    padding: 16px 16px 84px 16px !important;
    max-width: 100% !important;
    width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }

  /* Dashboard Hero */
  .dashboard-hero {
    padding: 22px 18px !important;
    margin-bottom: 20px !important;
    border-radius: var(--radius-md) !important;
    flex-direction: column !important;
    align-items: flex-start !important;
  }
  .dashboard-hero::before {
    display: none !important;
  }
  .hero-actions {
    flex-direction: column !important;
    width: 100% !important;
    gap: 10px !important;
  }
  .hero-actions button {
    width: 100% !important;
    justify-content: center !important;
  }
  .hero-stats {
    display: flex !important;
    flex-direction: row !important;
    gap: 8px !important;
    width: 100% !important;
    margin-top: 14px !important;
  }
  .stat-card {
    flex: 1 !important;
    min-width: 0 !important;
    padding: 12px 6px !important;
    text-align: center !important;
  }
  .stat-num {
    font-size: 1.4rem !important;
  }

  /* 6. FORCE ALL GRIDS TO SINGLE COLUMN ON MOBILE */
  .topics-grid,
  .roadmap-grid,
  .overview-grid,
  .practice-grid,
  .formula-grid,
  .solution-meta-box,
  .tips-trik-grid,
  .strategy-phase-grid,
  .multi-metode-grid,
  [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }

  /* 7. FULL-WIDTH SAFE CARDS */
  .topic-card,
  .roadmap-card,
  .component-card,
  .overview-hero-card,
  .topic-header-banner,
  .overview-box,
  .tip-box,
  .trap-card,
  .hots-box,
  .callout,
  .subtopic-quiz-item,
  .subtopic-quiz-wrap,
  .subtopic-pane,
  .subtopic-study-view,
  .tab-pane,
  .question-card,
  .content-card {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }

  .topic-header-title-row {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 14px !important;
  }
  .topic-header-left {
    width: 100% !important;
    gap: 12px !important;
  }

  /* Subtopic Nav Bar on Mobile */
  .subtopic-nav-container {
    top: 60px !important;
    padding: 6px 8px !important;
    margin-bottom: 16px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .subtopic-nav-scroll {
    max-width: 100% !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    gap: 6px !important;
    padding-bottom: 6px !important;
  }

  /* 8. TUTORIAL 9 LANGKAH VERTICAL LAYOUT */
  .step-9-box {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
    border-radius: var(--radius-md) !important;
    min-width: 0 !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .step-9-badge {
    align-self: flex-start !important;
  }
  .step-9-text {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    overflow-x: auto !important;
    word-break: break-word !important;
  }

  /* 9. SOAL TKA & QUIZ SINGLE-COLUMN UX */
  .quiz-control-bar {
    flex-direction: column !important;
    gap: 12px !important;
    align-items: stretch !important;
    width: 100% !important;
  }
  .quiz-control-bar > div,
  .quiz-control-bar button {
    width: 100% !important;
    justify-content: center !important;
  }
  .difficulty-tabs {
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 8px !important;
    width: 100% !important;
  }
  .question-footer {
    flex-direction: column !important;
    gap: 10px !important;
  }
  .question-footer button {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Preformatted Code & ASCII */
  pre, code {
    max-width: 100% !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    white-space: pre-wrap !important;
    word-break: break-word !important;
  }

  /* 10. MOBILE BOTTOM NAVIGATION (OPTION B) */
  .mobile-bottom-nav {
    display: flex !important;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 64px !important;
    background: rgba(253, 251, 247, 0.96) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    border-top: 1px solid var(--border) !important;
    z-index: 999 !important;
    justify-content: space-around !important;
    align-items: center !important;
    padding-bottom: max(4px, env(safe-area-inset-bottom)) !important;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.05) !important;
  }
  body.dark-theme .mobile-bottom-nav {
    background: rgba(22, 18, 25, 0.96) !important;
    border-top-color: var(--border) !important;
  }
}

/* --------------------------------------------------------------------------
   ANDROID & COMPACT MOBILE OPTIMIZATION (<= 360px)
   (Samsung Galaxy A-series, Xiaomi Redmi, Oppo, Vivo, Poco, Realme)
   Full Typography Retention: Body 19.5px, Soal 21px, Pilihan 19.5px, H1 32-36px
   -------------------------------------------------------------------------- */
@media (max-width: 360px) {
  :root {
    font-size: 20px !important;
  }

  html, body {
    font-size: 20px !important;
    line-height: 1.75 !important;
    font-weight: 500 !important;
    -webkit-text-size-adjust: 100% !important;
    text-size-adjust: 100% !important;
  }

  p,
  li,
  .hero-text p,
  .roadmap-card p,
  .topic-card-desc,
  .overview-box p,
  .overview-box li,
  .step-9-text,
  .callout,
  .callout p,
  .trap-field,
  .trap-recognition-box,
  .tip-box p,
  .hots-box p,
  .solution-steps,
  .solution-steps li,
  .explanation-text,
  .explanation-text ol,
  .explanation-text li,
  .recog-step div,
  .recog-step span,
  .anti-trap-checklist li,
  .common-mistake-box,
  .common-mistake-box div,
  .quick-review-item p,
  .subtopic-article p,
  .subtopic-article li,
  .content-card p,
  .content-card li,
  .overview-hero-card p,
  .formula-detail,
  .algo-step-content p,
  .master-check-text,
  .strategy-phase-card ul,
  .strategy-phase-card li,
  .recognition-box div,
  .content-card div {
    font-size: 19.5px !important;
    line-height: 1.75 !important;
  }

  .question-body,
  .subtopic-quiz-question-text,
  .quiz-question-text,
  .example-question-text {
    font-size: 21px !important;
    line-height: 1.75 !important;
    font-weight: 700 !important;
  }

  .quiz-option-button,
  .option-item {
    font-size: 19.5px !important;
    padding: 14px 16px !important;
    min-height: 56px !important;
    line-height: 1.55 !important;
  }
  .quiz-option-button span,
  .option-text {
    font-size: 19.5px !important;
    line-height: 1.55 !important;
  }
  .option-key {
    font-size: 19.5px !important;
    width: 38px !important;
    height: 38px !important;
  }

  /* Compact container padding to prevent text squishing on 360px Android */
  .content-area {
    padding: 14px 10px 84px 10px !important;
  }
  .dashboard-hero {
    padding: 16px 12px !important;
  }
  .stat-card {
    padding: 10px 4px !important;
  }
  .stat-num {
    font-size: 1.6rem !important;
  }
  .component-card {
    padding: 16px 12px !important;
  }
  .step-9-box {
    padding: 14px 12px !important;
  }
}

/* Ultra-compact Mobile (<= 320px - e.g. iPhone SE 1st gen) */
@media (max-width: 320px) {
  .content-area {
    padding: 12px 8px 84px 8px !important;
  }
  .component-card {
    padding: 14px 10px !important;
  }
}

/* --------------------------------------------------------------------------
   USER-CONTROLLED FONT BOOSTER (NORMAL / BESAR / EKSTRA BESAR)
   -------------------------------------------------------------------------- */
body.font-mode-besar {
  font-size: 22px !important;
}
body.font-mode-besar p,
body.font-mode-besar li,
body.font-mode-besar .step-9-text,
body.font-mode-besar .trap-field,
body.font-mode-besar .tip-box p,
body.font-mode-besar .solution-steps,
body.font-mode-besar .explanation-text,
body.font-mode-besar .common-mistake-box div,
body.font-mode-besar .content-card div {
  font-size: 21.5px !important;
}
body.font-mode-besar .question-body,
body.font-mode-besar .subtopic-quiz-question-text,
body.font-mode-besar .quiz-question-text {
  font-size: 23px !important;
}
body.font-mode-besar .quiz-option-button,
body.font-mode-besar .option-item,
body.font-mode-besar .option-text {
  font-size: 21.5px !important;
}
body.font-mode-besar .katex-display,
body.font-mode-besar .katex-display > .katex {
  font-size: 29px !important;
}

body.font-mode-ekstra {
  font-size: 24px !important;
}
body.font-mode-ekstra p,
body.font-mode-ekstra li,
body.font-mode-ekstra .step-9-text,
body.font-mode-ekstra .trap-field,
body.font-mode-ekstra .tip-box p,
body.font-mode-ekstra .solution-steps,
body.font-mode-ekstra .explanation-text,
body.font-mode-ekstra .common-mistake-box div,
body.font-mode-ekstra .content-card div {
  font-size: 23.5px !important;
}
body.font-mode-ekstra .question-body,
body.font-mode-ekstra .subtopic-quiz-question-text,
body.font-mode-ekstra .quiz-question-text {
  font-size: 25px !important;
}
body.font-mode-ekstra .quiz-option-button,
body.font-mode-ekstra .option-item,
body.font-mode-ekstra .option-text {
  font-size: 23.5px !important;
}
body.font-mode-ekstra .katex-display,
body.font-mode-ekstra .katex-display > .katex {
  font-size: 32px !important;
}