/* ==========================================================================
   3T_2026 - Informatique 3ème Année Secondary 
   Design System & Theme Stylesheet (Dark & Light Mode Support)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700&display=swap');

/* --- Dark Theme (Default) --- */
:root,
[data-theme="dark"] {
  /* Bootstrap Core CSS Variable Overrides */
  --bs-body-color: #f8fafc;
  --bs-body-bg: #0f172a;
  --bs-heading-color: #ffffff;
  --bs-card-color: #f8fafc;
  --bs-card-bg: #1e293b;
  --bs-modal-color: #f8fafc;
  --bs-modal-bg: #1e293b;
  --bs-secondary-color: #cbd5e1;
  --bs-tertiary-color: #94a3b8;
  --bs-tertiary-bg: #1e293b;
  --bs-tertiary-bg-rgb: 30, 41, 59;
  --bs-border-color: #334155;

  /* Custom Design System Tokens */
  --bg-main: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --bg-header: #0b1120;
  --bg-header-box: rgba(15, 23, 42, 0.6);
  --bg-navbar: rgba(15, 23, 42, 0.9);
  --bg-code: #0d1117;
  --bg-code-header: #161b22;
  --bg-input: #1e293b;
  --bg-modal: #1e293b;
  --bg-subtle: rgba(255, 255, 255, 0.05);
  --bg-table-th: #1e293b;
  --bg-table-td: rgba(15, 23, 42, 0.4);
  --bg-footer: #0b0f19;

  --border-color: #334155;
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-highlight: rgba(99, 102, 241, 0.4);

  --text-main: #f8fafc;
  --text-heading: #ffffff;
  --text-muted: #cbd5e1;
  --text-dim: #94a3b8;
  --text-code: #f8fafc;

  --hero-title-grad: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  --hero-bg-grad: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.22) 0%, rgba(15, 23, 42, 0) 70%);

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.2);
  --primary-text: #a5b4fc;
  --secondary: #06b6d4;
  --accent: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --font-sans: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-mono: 'Fira Code', monospace;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);
}

/* --- Light Theme --- */
[data-theme="light"] {
  /* Bootstrap Core CSS Variable Overrides */
  --bs-body-color: #1e293b;
  --bs-body-bg: #f8fafc;
  --bs-heading-color: #0f172a;
  --bs-card-color: #1e293b;
  --bs-card-bg: #ffffff;
  --bs-modal-color: #1e293b;
  --bs-modal-bg: #ffffff;
  --bs-secondary-color: #475569;
  --bs-tertiary-color: #64748b;
  --bs-tertiary-bg: #f1f5f9;
  --bs-tertiary-bg-rgb: 241, 245, 249;
  --bs-border-color: #cbd5e1;

  /* Custom Design System Tokens */
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-header: #ffffff;
  --bg-header-box: #f1f5f9;
  --bg-navbar: rgba(255, 255, 255, 0.95);
  --bg-code: #f1f5f9;
  --bg-code-header: #e2e8f0;
  --bg-input: #ffffff;
  --bg-modal: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-table-th: #f1f5f9;
  --bg-table-td: #ffffff;
  --bg-footer: #e2e8f0;

  --border-color: #cbd5e1;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-highlight: rgba(79, 70, 229, 0.4);

  --text-main: #1e293b;
  --text-heading: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  --text-code: #0f172a;

  --hero-title-grad: linear-gradient(135deg, #0f172a 0%, #334155 100%);
  --hero-bg-grad: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.08) 0%, rgba(248, 250, 252, 0) 70%);

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --primary-text: #4338ca;
  --secondary: #0891b2;
  --accent: #7c3aed;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.15);
}

/* Global Reset & Base Typography */
body {
  font-family: var(--font-sans);
  background-color: var(--bg-main) !important;
  color: var(--text-main) !important;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Header & Background Subtitle Theme Overrides */
header:not(.hero-section) {
  background-color: var(--bg-header) !important;
  color: var(--text-main) !important;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.bg-body-tertiary {
  background-color: var(--bs-tertiary-bg) !important;
  color: var(--text-main) !important;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6,
.h1,
.h2,
.h3,
.h4,
.h5,
.h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-heading) !important;
}

.text-muted {
  color: var(--text-muted) !important;
}

.text-dim {
  color: var(--text-dim) !important;
}

.text-heading {
  color: var(--text-heading) !important;
}

.text-body {
  color: var(--text-main) !important;
}

a {
  color: var(--primary);
  transition: color 0.2s ease;
}

/* --- Highlight.js High Contrast Theme Overrides (Dark & Light Mode) --- */
pre code.hljs {
  display: block;
  overflow-x: auto;
  padding: 1em;
  background: var(--bg-code) !important;
  color: var(--text-code) !important;
}

.code-container {
  display: flex;
  flex-direction: column;
  position: relative;
  border-radius: 0.75rem;
  overflow: hidden;
  margin: 1rem 0;
  border: 1px solid var(--border-color);
  background-color: var(--bg-code) !important;
  box-shadow: var(--shadow-md);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-code-header) !important;
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted) !important;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s ease;
}

.code-container pre {
  flex: 1;
  margin: 0;
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.6;
  overflow-x: auto;
  background-color: var(--bg-code) !important;
  color: var(--text-code) !important;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* High contrast syntax tokens for BOTH dark & light mode code blocks */
.hljs {
  color: var(--text-code) !important;
  background: var(--bg-code) !important;
}

.hljs-subst {
  color: var(--text-code) !important;
}

/* Syntax Tokens (Dark Mode Default) */
.hljs-keyword {
  color: #c084fc !important;
  font-weight: 600;
}

.hljs-type {
  color: #a78bfa !important;
  font-weight: 600;
}

.hljs-built_in {
  color: #f472b6 !important;
  font-weight: 600;
}

.hljs-title,
.hljs-title.class_,
.hljs-title.function_ {
  color: #38bdf8 !important;
  font-weight: 600;
}

.hljs-string,
.hljs-regexp {
  color: #34d399 !important;
}

.hljs-number,
.hljs-literal {
  color: #fb923c !important;
}

.hljs-comment,
.hljs-quote,
.hljs-doctag {
  color: #94a3b8 !important;
  font-style: italic;
}

.hljs-operator,
.hljs-punctuation {
  color: #e2e8f0 !important;
}

.hljs-symbol,
.hljs-bullet {
  color: #facc15 !important;
}

/* Syntax Tokens (Light Mode Overrides) */
[data-theme="light"] .hljs-keyword {
  color: #7c3aed !important;
}

[data-theme="light"] .hljs-type {
  color: #6d28d9 !important;
}

[data-theme="light"] .hljs-built_in {
  color: #db2777 !important;
}

[data-theme="light"] .hljs-title,
[data-theme="light"] .hljs-title.class_,
[data-theme="light"] .hljs-title.function_ {
  color: #0284c7 !important;
}

[data-theme="light"] .hljs-string,
[data-theme="light"] .hljs-regexp {
  color: #047857 !important;
}

[data-theme="light"] .hljs-number,
[data-theme="light"] .hljs-literal {
  color: #ea580c !important;
}

[data-theme="light"] .hljs-comment,
[data-theme="light"] .hljs-quote,
[data-theme="light"] .hljs-doctag {
  color: #64748b !important;
}

[data-theme="light"] .hljs-operator,
[data-theme="light"] .hljs-punctuation {
  color: #334155 !important;
}

[data-theme="light"] .hljs-symbol,
[data-theme="light"] .hljs-bullet {
  color: #d97706 !important;
}

/* Copy Button */
.btn-copy {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main) !important;
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 0.35rem;
  cursor: pointer;
  z-index: 10;
  transition: all 0.2s ease;
}

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

.btn-copy-floating {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.btn-copy-success {
  background: rgba(16, 185, 129, 0.25) !important;
  border-color: rgba(16, 185, 129, 0.5) !important;
  color: #34d399 !important;
}

/* Navbar & Header */
.navbar-custom {
  background: var(--bg-navbar) !important;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.navbar-brand-custom {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link-custom {
  color: var(--text-muted) !important;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
}

.nav-link-custom:hover,
.nav-link-custom.active {
  color: var(--text-heading) !important;
  background: var(--bg-subtle);
}

.navbar-toggler {
  color: var(--text-heading) !important;
  border-color: var(--border-color) !important;
}

/* Theme Switcher Button */
.theme-toggle-btn {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main) !important;
  padding: 0.4rem 0.85rem;
  border-radius: 2rem;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* Breadcrumb Global Hidden */
.breadcrumb,
nav[aria-label="breadcrumb"] {
  display: none !important;
}

/* Hero Section */
.hero-section {
  background: var(--hero-bg-grad);
  padding: 5.5rem 1.5rem 3.5rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  z-index: 1;
}

.hero-section .btn {
  cursor: pointer !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.hero-section .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3) !important;
}

[data-theme="dark"] .hero-section .btn-outline-secondary {
  color: #cbd5e1 !important;
  border-color: #334155 !important;
  background-color: rgba(30, 41, 59, 0.7) !important;
}

[data-theme="dark"] .hero-section .btn-outline-secondary:hover {
  color: #ffffff !important;
  border-color: #6366f1 !important;
  background-color: rgba(99, 102, 241, 0.25) !important;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  background: var(--hero-title-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted) !important;
  max-width: 750px;
  margin: 0 auto 2rem auto;
}

.badge-custom {
  background: var(--primary-light) !important;
  border: 1px solid var(--border-highlight) !important;
  color: var(--primary-text) !important;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 2rem;
}

/* --- Article Content Wrapper & Section Titles (h2) --- */
.article-content-wrapper {
  margin-bottom: 2.5rem;
}

.article-content-wrapper>h2,
article>h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading) !important;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1.15rem;
  margin-top: 1.5rem;
  margin-bottom: 1.25rem;
  background: linear-gradient(90deg, var(--bg-subtle) 0%, rgba(0, 0, 0, 0) 100%);
  border-left: 4px solid var(--primary);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all 0.3s ease;
}

.article-content-wrapper>h2:hover,
article>h2:hover {
  transform: translateX(4px);
  border-left-color: var(--secondary);
  box-shadow: var(--shadow-md);
}

.article-content-wrapper>h2 i,
article>h2 i {
  font-size: 1.35rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.25));
  transition: transform 0.2s ease;
}

.article-content-wrapper>h2:hover i,
article>h2:hover i {
  transform: scale(1.15);
}

/* Cards & Containers */
.card-custom,
.card {
  background-color: var(--bg-card) !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 1rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background-color 0.3s ease;
  overflow: hidden;
  height: 100%;
}

.card-custom:hover,
.card:hover {
  transform: translateY(-4px);
  border-color: var(--primary) !important;
  box-shadow: var(--shadow-glow);
}

.card-custom h1,
.card-custom h2,
.card-custom h3,
.card-custom h4,
.card-custom h5,
.card-custom h6,
.card h1,
.card h2,
.card h3,
.card h4,
.card h5,
.card h6 {
  color: var(--text-heading) !important;
}

.card-custom p,
.card p,
.card-custom li,
.card li,
.card-body {
  color: var(--text-main) !important;
}

.card-custom .text-muted,
.card .text-muted {
  color: var(--text-muted) !important;
}

.card-header-custom,
.card-header {
  background-color: var(--bg-subtle) !important;
  border-bottom: 1px solid var(--border-color) !important;
  color: var(--text-heading) !important;
  padding: 1.25rem 1.5rem;
}

/* Custom Box & Alerts */
.box-custom {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-main) !important;
  border-radius: 0.75rem;
  padding: 1.25rem;
}

/* --- High-Contrast Custom Alert Components (Dark & Light Themes) --- */
.alert {
  border-radius: 0.75rem;
  padding: 1.15rem 1.35rem;
  border-width: 1px;
  border-style: solid;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.alert h1, .alert h2, .alert h3, .alert h4, .alert h5, .alert h6,
.alert .h1, .alert .h2, .alert .h3, .alert .h4, .alert .h5, .alert .h6,
.alert .alert-heading {
  font-weight: 700 !important;
  margin-bottom: 0.4rem;
}

/* Alert Warning */
.alert-warning {
  background-color: rgba(245, 158, 11, 0.12) !important;
  border-color: rgba(245, 158, 11, 0.35) !important;
  color: #fef08a !important;
}

.alert-warning h1, .alert-warning h2, .alert-warning h3, .alert-warning h4, .alert-warning h5, .alert-warning h6,
.alert-warning .h1, .alert-warning .h2, .alert-warning .h3, .alert-warning .h4, .alert-warning .h5, .alert-warning .h6,
.alert-warning .alert-heading,
.alert-warning i {
  color: #f59e0b !important;
}

.alert-warning code {
  background-color: rgba(245, 158, 11, 0.22) !important;
  color: #fef08a !important;
  border: 1px solid rgba(245, 158, 11, 0.3) !important;
}

/* Light mode overrides for Alert Warning */
[data-theme="light"] .alert-warning {
  background-color: #fffbeb !important;
  border-color: #fde68a !important;
  color: #78350f !important;
}

[data-theme="light"] .alert-warning h1,
[data-theme="light"] .alert-warning h2,
[data-theme="light"] .alert-warning h3,
[data-theme="light"] .alert-warning h4,
[data-theme="light"] .alert-warning h5,
[data-theme="light"] .alert-warning h6,
[data-theme="light"] .alert-warning .h1,
[data-theme="light"] .alert-warning .h2,
[data-theme="light"] .alert-warning .h3,
[data-theme="light"] .alert-warning .h4,
[data-theme="light"] .alert-warning .h5,
[data-theme="light"] .alert-warning .h6,
[data-theme="light"] .alert-warning .alert-heading,
[data-theme="light"] .alert-warning i {
  color: #b45309 !important;
}

[data-theme="light"] .alert-warning code {
  background-color: #fef3c7 !important;
  color: #78350f !important;
  border: 1px solid #fde68a !important;
}

/* Alert Info */
.alert-info {
  background-color: rgba(6, 182, 212, 0.12) !important;
  border-color: rgba(6, 182, 212, 0.35) !important;
  color: #cff4fc !important;
}

.alert-info h1, .alert-info h2, .alert-info h3, .alert-info h4, .alert-info h5, .alert-info h6,
.alert-info .h1, .alert-info .h2, .alert-info .h3, .alert-info .h4, .alert-info .h5, .alert-info .h6,
.alert-info .alert-heading,
.alert-info i {
  color: #06b6d4 !important;
}

.alert-info code {
  background-color: rgba(6, 182, 212, 0.22) !important;
  color: #cff4fc !important;
  border: 1px solid rgba(6, 182, 212, 0.3) !important;
}

[data-theme="light"] .alert-info {
  background-color: #ecfeff !important;
  border-color: #a5f3fc !important;
  color: #164e63 !important;
}

[data-theme="light"] .alert-info h1,
[data-theme="light"] .alert-info h2,
[data-theme="light"] .alert-info h3,
[data-theme="light"] .alert-info h4,
[data-theme="light"] .alert-info h5,
[data-theme="light"] .alert-info h6,
[data-theme="light"] .alert-info .h1,
[data-theme="light"] .alert-info .h2,
[data-theme="light"] .alert-info .h3,
[data-theme="light"] .alert-info .h4,
[data-theme="light"] .alert-info .h5,
[data-theme="light"] .alert-info .h6,
[data-theme="light"] .alert-info .alert-heading,
[data-theme="light"] .alert-info i {
  color: #0e7490 !important;
}

[data-theme="light"] .alert-info code {
  background-color: #cff4fc !important;
  color: #164e63 !important;
  border: 1px solid #a5f3fc !important;
}

/* Alert Success */
.alert-success {
  background-color: rgba(16, 185, 129, 0.12) !important;
  border-color: rgba(16, 185, 129, 0.35) !important;
  color: #d1fae5 !important;
}

.alert-success h1, .alert-success h2, .alert-success h3, .alert-success h4, .alert-success h5, .alert-success h6,
.alert-success .h1, .alert-success .h2, .alert-success .h3, .alert-success .h4, .alert-success .h5, .alert-success .h6,
.alert-success .alert-heading,
.alert-success i {
  color: #10b981 !important;
}

.alert-success code {
  background-color: rgba(16, 185, 129, 0.22) !important;
  color: #d1fae5 !important;
  border: 1px solid rgba(16, 185, 129, 0.3) !important;
}

[data-theme="light"] .alert-success {
  background-color: #ecfdf5 !important;
  border-color: #a7f3d0 !important;
  color: #065f46 !important;
}

[data-theme="light"] .alert-success h1,
[data-theme="light"] .alert-success h2,
[data-theme="light"] .alert-success h3,
[data-theme="light"] .alert-success h4,
[data-theme="light"] .alert-success h5,
[data-theme="light"] .alert-success h6,
[data-theme="light"] .alert-success .h1,
[data-theme="light"] .alert-success .h2,
[data-theme="light"] .alert-success .h3,
[data-theme="light"] .alert-success .h4,
[data-theme="light"] .alert-success .h5,
[data-theme="light"] .alert-success .h6,
[data-theme="light"] .alert-success .alert-heading,
[data-theme="light"] .alert-success i {
  color: #047857 !important;
}

[data-theme="light"] .alert-success code {
  background-color: #d1fae5 !important;
  color: #065f46 !important;
  border: 1px solid #a7f3d0 !important;
}

/* Alert Danger */
.alert-danger {
  background-color: rgba(239, 68, 68, 0.12) !important;
  border-color: rgba(239, 68, 68, 0.35) !important;
  color: #fee2e2 !important;
}

.alert-danger h1, .alert-danger h2, .alert-danger h3, .alert-danger h4, .alert-danger h5, .alert-danger h6,
.alert-danger .h1, .alert-danger .h2, .alert-danger .h3, .alert-danger .h4, .alert-danger .h5, .alert-danger .h6,
.alert-danger .alert-heading,
.alert-danger i {
  color: #ef4444 !important;
}

.alert-danger code {
  background-color: rgba(239, 68, 68, 0.22) !important;
  color: #fee2e2 !important;
  border: 1px solid rgba(239, 68, 68, 0.3) !important;
}

[data-theme="light"] .alert-danger {
  background-color: #fef2f2 !important;
  border-color: #fecaca !important;
  color: #991b1b !important;
}

[data-theme="light"] .alert-danger h1,
[data-theme="light"] .alert-danger h2,
[data-theme="light"] .alert-danger h3,
[data-theme="light"] .alert-danger h4,
[data-theme="light"] .alert-danger h5,
[data-theme="light"] .alert-danger h6,
[data-theme="light"] .alert-danger .h1,
[data-theme="light"] .alert-danger .h2,
[data-theme="light"] .alert-danger .h3,
[data-theme="light"] .alert-danger .h4,
[data-theme="light"] .alert-danger .h5,
[data-theme="light"] .alert-danger .h6,
[data-theme="light"] .alert-danger .alert-heading,
[data-theme="light"] .alert-danger i {
  color: #b91c1c !important;
}

[data-theme="light"] .alert-danger code {
  background-color: #fee2e2 !important;
  color: #991b1b !important;
  border: 1px solid #fecaca !important;
}

/* Alert Primary */
.alert-primary {
  background-color: rgba(99, 102, 241, 0.12) !important;
  border-color: rgba(99, 102, 241, 0.35) !important;
  color: #e0e7ff !important;
}

.alert-primary h1, .alert-primary h2, .alert-primary h3, .alert-primary h4, .alert-primary h5, .alert-primary h6,
.alert-primary .h1, .alert-primary .h2, .alert-primary .h3, .alert-primary .h4, .alert-primary .h5, .alert-primary .h6,
.alert-primary .alert-heading,
.alert-primary i {
  color: #6366f1 !important;
}

.alert-primary code {
  background-color: rgba(99, 102, 241, 0.22) !important;
  color: #e0e7ff !important;
  border: 1px solid rgba(99, 102, 241, 0.3) !important;
}

[data-theme="light"] .alert-primary {
  background-color: #eef2ff !important;
  border-color: #c7d2fe !important;
  color: #3730a3 !important;
}

[data-theme="light"] .alert-primary h1,
[data-theme="light"] .alert-primary h2,
[data-theme="light"] .alert-primary h3,
[data-theme="light"] .alert-primary h4,
[data-theme="light"] .alert-primary h5,
[data-theme="light"] .alert-primary h6,
[data-theme="light"] .alert-primary .h1,
[data-theme="light"] .alert-primary .h2,
[data-theme="light"] .alert-primary .h3,
[data-theme="light"] .alert-primary .h4,
[data-theme="light"] .alert-primary .h5,
[data-theme="light"] .alert-primary .h6,
[data-theme="light"] .alert-primary .alert-heading,
[data-theme="light"] .alert-primary i {
  color: #4338ca !important;
}

[data-theme="light"] .alert-primary code {
  background-color: #e0e7ff !important;
  color: #3730a3 !important;
  border: 1px solid #c7d2fe !important;
}

.formula-box {
  background: var(--bg-code) !important;
  color: #38bdf8 !important;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  text-align: center;
  font-weight: 600;
  margin: 0.75rem 0;
  border: 1px solid var(--border-color);
}

/* --- High-Contrast Simulator Component Styles (Dark & Light Theme) --- */
.simulator-card-body {
  background-color: var(--bg-card) !important;
  color: var(--text-main) !important;
  padding: 1.5rem;
}

.simulator-box {
  background-color: var(--bg-code-header) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-main) !important;
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.simulator-val-box {
  background-color: var(--bg-code) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-main) !important;
  border-radius: 0.5rem;
  padding: 1rem;
  text-align: center;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.simulator-label {
  color: var(--text-main) !important;
  font-weight: 600;
  font-size: 0.9rem;
}

.simulator-sublabel {
  color: var(--text-muted) !important;
  font-size: 0.8rem;
}

[data-theme="light"] .simulator-sublabel {
  color: #475569 !important;
}

/* Filter & Outline Buttons */
.btn-outline-secondary {
  color: var(--text-main) !important;
  border-color: var(--border-color) !important;
  background-color: transparent !important;
}

.btn-outline-secondary:hover,
.btn-outline-secondary.active {
  color: #ffffff !important;
  background-color: var(--primary) !important;
  border-color: var(--primary) !important;
}

/* Tabs */
.nav-tabs-custom {
  border-bottom: 1px solid var(--border-color);
  gap: 0.5rem;
}

.nav-tabs-custom .nav-link {
  color: var(--text-muted) !important;
  border: none;
  border-bottom: 3px solid transparent;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  transition: all 0.2s ease;
}

.nav-tabs-custom .nav-link:hover {
  color: var(--text-heading) !important;
  border-color: var(--border-highlight);
}

.nav-tabs-custom .nav-link.active {
  color: var(--primary-text) !important;
  background: transparent;
  border-color: var(--primary);
}

/* Form Inputs & Controls */
.form-control-custom,
.form-control {
  background-color: var(--bg-input) !important;
  color: var(--text-main) !important;
  border-color: var(--border-color) !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control-custom:focus,
.form-control:focus {
  background-color: var(--bg-input) !important;
  color: var(--text-main) !important;
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 0.25rem var(--primary-light) !important;
}

.form-control::placeholder {
  color: var(--text-dim) !important;
}

.input-group-text-custom,
.input-group-text {
  background-color: var(--bg-subtle) !important;
  color: var(--text-muted) !important;
  border-color: var(--border-color) !important;
}

/* Accordions */
.accordion-custom .accordion-item,
.accordion-item {
  background-color: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-main) !important;
  border-radius: 0.5rem !important;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.accordion-custom .accordion-button,
.accordion-button {
  background-color: var(--bg-card) !important;
  color: var(--text-heading) !important;
  font-weight: 600;
  box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
  background-color: var(--bg-subtle) !important;
  color: var(--primary-text) !important;
}

[data-theme="dark"] .accordion-button::after {
  filter: invert(1) grayscale(100%) brightness(200%);
}

.accordion-body {
  color: var(--text-main) !important;
  background-color: var(--bg-card) !important;
}

/* Modals */
.modal-content-custom,
.modal-content {
  background-color: var(--bg-modal) !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border-color) !important;
  box-shadow: var(--shadow-lg);
}

.modal-header,
.modal-footer {
  border-color: var(--border-color) !important;
  color: var(--text-heading) !important;
}

.modal-body {
  color: var(--text-main) !important;
}

[data-theme="light"] .btn-close {
  filter: none;
}

[data-theme="dark"] .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* Tables */
.table-custom,
.table {
  color: var(--text-main) !important;
  border-color: var(--border-color) !important;
  margin-bottom: 0;
}

.table-custom th,
.table th {
  background-color: var(--bg-table-th) !important;
  color: var(--primary-text) !important;
  font-weight: 600;
  border-bottom: 2px solid var(--border-color) !important;
}

.table-custom td,
.table td {
  background-color: var(--bg-table-td) !important;
  color: var(--text-main) !important;
  border-color: var(--border-color) !important;
  vertical-align: middle;
}

/* Terminal Simulator */
.terminal-window {
  background: #090d16 !important;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  font-family: var(--font-mono);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.terminal-header {
  background: #1e293b !important;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red {
  background: #ff5f56;
}

.dot-yellow {
  background: #ffbd2e;
}

.dot-green {
  background: #27c93f;
}

.terminal-body {
  padding: 1.5rem;
  color: #38bdf8 !important;
  font-size: 0.95rem;
  min-height: 220px;
}

.terminal-output {
  color: #e2e8f0 !important;
  white-space: pre-wrap;
}

.terminal-prompt {
  color: #10b981 !important;
  font-weight: 600;
}

/* Interactive Quizzes */
.quiz-option {
  background: var(--bg-subtle) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 0.5rem;
  padding: 0.85rem 1.15rem;
  margin-bottom: 0.65rem;
  cursor: pointer;
  color: var(--text-main) !important;
  transition: all 0.2s ease;
}

.quiz-option:hover {
  background: var(--primary-light) !important;
  border-color: var(--primary) !important;
}

.quiz-option.selected-correct {
  background: rgba(16, 185, 129, 0.18) !important;
  border-color: #10b981 !important;
  color: var(--text-heading) !important;
}

.quiz-option.selected-incorrect {
  background: rgba(239, 68, 68, 0.18) !important;
  border-color: #ef4444 !important;
  color: var(--text-heading) !important;
}

.badge-info-custom {
  background: rgba(6, 182, 212, 0.2) !important;
  color: var(--secondary) !important;
  border: 1px solid rgba(6, 182, 212, 0.4) !important;
}

.badge-warning-custom {
  background: rgba(245, 158, 11, 0.2) !important;
  color: var(--warning) !important;
  border: 1px solid rgba(245, 158, 11, 0.4) !important;
}

/* Footer */
footer {
  margin-top: auto;
  background: var(--bg-footer) !important;
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0;
  color: var(--text-dim) !important;
  font-size: 0.9rem;
  transition: background-color 0.3s ease;
}

footer p {
  color: var(--text-muted) !important;
}

/* KaTeX custom inline styling */
.katex-display {
  background: var(--bg-subtle);
  padding: 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
}

/* --- Floating Drawer Navigation System (Left Side) --- */
.floating-drawer-btn {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  z-index: 1040;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  color: #ffffff !important;
  border: none;
  border-radius: 3rem;
  padding: 0.8rem 1.35rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.92rem;
  box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.5), 0 0 20px rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.floating-drawer-btn:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 15px 30px -5px rgba(99, 102, 241, 0.6), 0 0 25px rgba(139, 92, 246, 0.4);
  color: #ffffff !important;
}

.floating-drawer-btn .badge-count {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 1rem;
}

/* Offcanvas Drawer Custom Styles (Left Placement) */
.drawer-custom {
  background-color: var(--bg-card) !important;
  color: var(--text-main) !important;
  border-right: 1px solid var(--border-color) !important;
  border-left: none !important;
  width: 380px !important;
  max-width: 85vw !important;
  box-shadow: 10px 0 30px rgba(0, 0, 0, 0.3);
}

.drawer-header-custom {
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
}

.drawer-nav-item {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 0.9rem 1.1rem;
  margin-bottom: 0.65rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.25s ease;
  color: var(--text-main) !important;
}

.drawer-nav-item:hover {
  border-color: var(--primary) !important;
  background-color: var(--primary-light) !important;
  transform: translateX(4px);
}

.drawer-nav-item.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.15) 100%) !important;
  border-color: var(--primary) !important;
  box-shadow: var(--shadow-sm);
}

.drawer-item-title {
  font-size: 0.815rem;
  line-height: 1.35;
  white-space: normal !important;
  word-break: break-word;
}

.drawer-nav-item.active .drawer-item-title {
  color: var(--primary-text) !important;
  font-weight: 700;
}

.drawer-item-icon {
  width: 38px;
  height: 38px;
  border-radius: 0.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
  color: var(--primary-text);
}

.drawer-nav-item.active .drawer-item-icon {
  background: var(--primary);
  color: #ffffff !important;
  border-color: var(--primary);
}

.drawer-sub-item {
  transition: all 0.2s ease;
  color: var(--text-muted) !important;
}

.drawer-sub-item:hover,
.drawer-sub-item.active {
  color: var(--primary-text) !important;
  background-color: var(--primary-light) !important;
  font-weight: 600;
}

.drawer-seance-link {
  transition: all 0.25s ease;
  background-color: var(--bg-subtle) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-main) !important;
  font-size: 0.835rem;
}

.drawer-seance-link:hover {
  border-color: var(--primary) !important;
  background-color: var(--primary-light) !important;
  color: var(--primary-text) !important;
  transform: translateX(4px);
}

.drawer-seance-link.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.15) 100%) !important;
  border-color: var(--primary) !important;
  color: var(--primary-text) !important;
  font-weight: 700 !important;
  box-shadow: var(--shadow-sm);
}

.drawer-seance-link i {
  color: var(--text-muted);
}

.drawer-seance-link:hover i,
.drawer-seance-link.active i {
  color: var(--primary) !important;
}

/* Fade-in transition for single section display */
.section-active-fade {
  animation: sectionFadeIn 0.35s ease-out forwards;
}

@keyframes sectionFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

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

/* Custom Toast Notifications */
.toast-container-custom {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast-custom {
  background: var(--bg-card) !important;
  color: var(--text-main) !important;
  border: 1px solid var(--border-color) !important;
  box-shadow: var(--shadow-lg);
  border-radius: 0.75rem;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: auto;
  backdrop-filter: blur(8px);
}

.toast-custom.toast-show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.toast-custom.toast-hide {
  opacity: 0;
  transform: translateY(-10px) scale(0.95);
}

/* Clickable Image Zoom */
.article-content-wrapper img,
.card-body img,
.img-zoomable {
  cursor: zoom-in;
  transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
}

.article-content-wrapper img:hover,
.card-body img:hover,
.img-zoomable:hover {
  transform: scale(1.02);
  filter: brightness(1.04);
}

/* Card Image Top Component */
.card-image {
  border-top-left-radius: calc(0.75rem - 1px);
  border-top-right-radius: calc(0.75rem - 1px);
  overflow: hidden;
}

/* Conditional Cards Natural Proportional Code Blocks */
.cond-card-body {
	display: grid;
	grid-template-rows: 300px 300px auto;
}

.cond-code-cell {
  display: flex;
  flex-direction: column;
}

.cond-code-cell .code-container,
.cond-code-cell pre {
  height: auto;
  margin: 0 !important;
}

.cond-code-cell pre code {
  height: auto;
}