/* ==========================================================================
   myK53 Design System
   South Africa K53 Learner's Licence Practice Test Platform
   ========================================================================== */

/* ==========================================================================
   1. CSS Custom Properties
   ========================================================================== */

:root {
  /* Colors — Brand */
  --color-primary: #00B4AA;
  --color-primary-dark: #009690;
  --color-primary-light: #33c3bb;
  --color-primary-alpha-10: rgba(0, 180, 170, 0.1);
  --color-primary-alpha-20: rgba(0, 180, 170, 0.2);

  --color-secondary: #C8D42A;
  --color-secondary-dark: #a8b21e;
  --color-secondary-light: #d6e04e;

  --color-dark: #1B2838;
  --color-dark-light: #253647;
  --color-dark-lighter: #2f4256;

  /* Colors — Accent */
  --color-accent-red: #E74C3C;
  --color-accent-red-dark: #c0392b;
  --color-accent-red-light: #fdecea;

  --color-accent-green: #27AE60;
  --color-accent-green-dark: #1e8c4d;
  --color-accent-green-light: #e8f8ef;

  --color-warning: #F39C12;
  --color-warning-light: #fef5e7;

  /* Colors — Surfaces */
  --color-bg: #F5F7FA;
  --color-surface: #FFFFFF;
  --color-border: #E0E6ED;
  --color-border-light: #EEF1F5;

  /* Colors — Text */
  --color-text: #2D3436;
  --color-text-secondary: #636E72;
  --color-text-muted: #9CA3A8;
  --color-text-inverse: #FFFFFF;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-md: 1.125rem;    /* 18px */
  --text-lg: 1.25rem;     /* 20px */
  --text-xl: 1.5rem;      /* 24px */
  --text-2xl: 1.875rem;   /* 30px */
  --text-3xl: 2.25rem;    /* 36px */
  --text-4xl: 3rem;       /* 48px */
  --text-5xl: 3.75rem;    /* 60px */

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* Spacing (4px base) */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-7: 1.75rem;   /* 28px */
  --space-8: 2rem;      /* 32px */
  --space-9: 2.25rem;   /* 36px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-14: 3.5rem;   /* 56px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(27, 40, 56, 0.05);
  --shadow-sm: 0 2px 4px rgba(27, 40, 56, 0.06);
  --shadow-md: 0 4px 12px rgba(27, 40, 56, 0.08);
  --shadow-lg: 0 8px 24px rgba(27, 40, 56, 0.1);
  --shadow-xl: 0 16px 48px rgba(27, 40, 56, 0.12);
  --shadow-nav: 0 2px 12px rgba(27, 40, 56, 0.06);
  --shadow-card-hover: 0 12px 32px rgba(27, 40, 56, 0.14);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-index scale */
  --z-dropdown: 100;
  --z-sticky: 500;
  --z-nav: 1000;
  --z-overlay: 1500;
  --z-modal: 2000;
  --z-toast: 2500;
  --z-whatsapp: 900;

  /* Layout */
  --container-max: 1200px;
  --container-padding: var(--space-6);
}


/* ==========================================================================
   2. Base Reset
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

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

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}


/* ==========================================================================
   3. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-text);
}

h1 {
  font-size: var(--text-4xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-3xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

h5 {
  font-size: var(--text-lg);
}

h6 {
  font-size: var(--text-md);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--leading-normal);
}

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

.text-lead {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

strong, b {
  font-weight: 700;
}

em, i {
  font-style: italic;
}

small {
  font-size: var(--text-sm);
}

blockquote {
  border-left: 4px solid var(--color-primary);
  padding: var(--space-4) var(--space-6);
  margin: var(--space-6) 0;
  background: var(--color-primary-alpha-10);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

blockquote p:last-child {
  margin-bottom: 0;
}

code {
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 0.9em;
  background: var(--color-bg);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: var(--color-accent-red);
}

pre {
  background: var(--color-dark);
  color: var(--color-text-inverse);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: var(--space-6) 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: var(--text-sm);
}

.content-text ul,
.content-text ol {
  margin: var(--space-4) 0;
  padding-left: var(--space-6);
}

.content-text ul {
  list-style-type: disc;
}

.content-text ol {
  list-style-type: decimal;
}

.content-text li {
  margin-bottom: var(--space-2);
  line-height: var(--leading-normal);
}

.content-text li::marker {
  color: var(--color-primary);
}


/* ==========================================================================
   4. Layout Utilities
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-col {
  flex-direction: column;
}

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.grid-2 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

.grid-3 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

.grid-4 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}


/* ==========================================================================
   5. Navigation
   ========================================================================== */

.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--color-surface);
  box-shadow: var(--shadow-nav);
  z-index: var(--z-nav);
  transition: box-shadow var(--transition-base);
}

.navbar-inner,
.navbar > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 1px;
  color: var(--color-text);
}

.nav-logo .logo-my {
  color: var(--color-secondary);
}

.nav-logo .logo-k53 {
  color: var(--color-primary);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* Dropdown — supports both .nav-dropdown and .nav-item.has-dropdown markup */
.nav-dropdown,
.nav-item.has-dropdown {
  position: relative;
}

.nav-dropdown-toggle,
.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  cursor: pointer;
}

.nav-dropdown-toggle .chevron,
.dropdown-toggle .chevron {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--transition-fast);
  margin-top: -3px;
}

.nav-dropdown:hover .nav-dropdown-toggle .chevron,
.nav-dropdown:focus-within .nav-dropdown-toggle .chevron,
.has-dropdown:hover .dropdown-toggle .chevron,
.has-dropdown:focus-within .dropdown-toggle .chevron {
  transform: rotate(-135deg);
}

.nav-dropdown-menu,
.has-dropdown > .nav-dropdown {
  position: absolute;
  top: calc(100% + var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-light);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-dropdown);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.has-dropdown:hover > .nav-dropdown,
.has-dropdown:focus-within > .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a,
.has-dropdown > .nav-dropdown a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-menu a:hover,
.has-dropdown > .nav-dropdown a:hover {
  background: var(--color-primary-alpha-10);
  color: var(--color-primary);
}

.nav-dropdown-menu a .dropdown-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--color-primary-alpha-10);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-md);
  flex-shrink: 0;
}

.nav-dropdown-menu a .dropdown-label {
  display: flex;
  flex-direction: column;
}

.nav-dropdown-menu a .dropdown-label small {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.nav-cta {
  display: none;
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: var(--color-text-inverse) !important;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-inverse) !important;
  transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: calc(var(--z-nav) + 1);
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-fast);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4) 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow) ease;
}

.mobile-menu.open,
.mobile-menu.active {
  display: block;
  max-height: 500px;
}

.mobile-menu a {
  display: block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--color-primary-alpha-10);
  color: var(--color-primary);
}

.mobile-menu .mobile-cta {
  display: block;
  margin: var(--space-4) var(--space-6);
  padding: var(--space-3);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  text-align: center;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.mobile-menu .mobile-cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-inverse);
}

.mobile-menu .mobile-dropdown-content {
  display: none;
  padding-left: var(--space-6);
  background: var(--color-bg);
}

.mobile-menu .mobile-dropdown-content.open {
  display: block;
}

.mobile-menu .mobile-dropdown-content a {
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-6);
}


/* ==========================================================================
   6. Hero Section
   ========================================================================== */

.hero {
  background: var(--color-dark);
  min-height: 500px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-16) 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 180, 170, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(200, 212, 42, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(200, 212, 42, 0.15);
  color: var(--color-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  border: 1px solid rgba(200, 212, 42, 0.25);
}

.hero h1 {
  color: var(--color-text-inverse);
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
  line-height: var(--leading-tight);
}

.hero h1 .highlight {
  color: var(--color-primary);
}

.hero p {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--text-md);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  line-height: var(--leading-relaxed);
}

.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

.hero-stat {
  text-align: center;
}

.hero-stat .stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.hero-stat .stat-label {
  display: block;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-top: var(--space-1);
}

.hero-ctas {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}


/* ==========================================================================
   7. Cards
   ========================================================================== */

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  border-top: 3px solid var(--color-secondary);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}

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

.card-header {
  margin-bottom: var(--space-4);
}

.card-body {
  margin-bottom: var(--space-4);
}

.card-body:last-child {
  margin-bottom: 0;
}

.card-footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary-alpha-10);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.card-icon.icon-lg {
  width: 64px;
  height: 64px;
  font-size: var(--text-2xl);
}

.card-tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--color-primary-alpha-10);
  color: var(--color-primary);
}

.card-tag.tag-success {
  background: var(--color-accent-green-light);
  color: var(--color-accent-green);
}

.card-tag.tag-danger {
  background: var(--color-accent-red-light);
  color: var(--color-accent-red);
}

.card-tag.tag-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.card p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

/* Card — link variant */
.card-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.card-link:hover {
  color: inherit;
}

/* Card — flat variant (no top border) */
.card.card-flat {
  border-top: none;
}

/* Card — bordered variant */
.card.card-bordered {
  border-top: none;
  border: 1px solid var(--color-border);
}


/* ==========================================================================
   8. Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast),
              border-color var(--transition-fast), transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 180, 170, 0.3);
}

/* Secondary (outline) */
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-primary-alpha-10);
}

/* Dark variant (for hero sections) */
.btn-dark {
  background: var(--color-dark);
  color: var(--color-text-inverse);
  border-color: var(--color-dark);
}

.btn-dark:hover {
  background: var(--color-dark-light);
  border-color: var(--color-dark-light);
  color: var(--color-text-inverse);
}

/* White variant (for dark backgrounds) */
.btn-white {
  background: var(--color-surface);
  color: var(--color-dark);
  border-color: var(--color-surface);
}

.btn-white:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-dark);
}

/* Danger */
.btn-danger {
  background: var(--color-accent-red);
  color: var(--color-text-inverse);
  border-color: var(--color-accent-red);
}

.btn-danger:hover {
  background: var(--color-accent-red-dark);
  border-color: var(--color-accent-red-dark);
  color: var(--color-text-inverse);
}

/* Size variants */
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

/* Icon button */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon.btn-lg {
  width: 48px;
  height: 48px;
}

.btn-icon.btn-sm {
  width: 32px;
  height: 32px;
}


/* ==========================================================================
   9. Badges / Tags
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1.4;
  white-space: nowrap;
  background: var(--color-bg);
  color: var(--color-text-secondary);
}

.badge-primary {
  background: var(--color-primary-alpha-10);
  color: var(--color-primary);
}

.badge-success {
  background: var(--color-accent-green-light);
  color: var(--color-accent-green);
}

.badge-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.badge-danger {
  background: var(--color-accent-red-light);
  color: var(--color-accent-red);
}

.badge-dark {
  background: var(--color-dark);
  color: var(--color-text-inverse);
}


/* ==========================================================================
   10. Accordion
   ========================================================================== */

.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  transition: border-color var(--transition-fast);
}

.accordion-item:hover {
  border-color: var(--color-primary-alpha-20);
}

.accordion-item.active {
  border-color: var(--color-primary);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  background: none;
  border: none;
  text-align: left;
  transition: color var(--transition-fast);
  gap: var(--space-4);
}

.accordion-header:hover {
  color: var(--color-primary);
}

.accordion-header .chevron {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.accordion-item.active .accordion-header .chevron {
  transform: rotate(-135deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow) ease, padding var(--transition-slow) ease;
}

.accordion-item.active .accordion-content {
  max-height: 600px;
}

.accordion-content-inner {
  padding: 0 var(--space-6) var(--space-6);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}


/* ==========================================================================
   11. Form Elements
   ========================================================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-label .required {
  color: var(--color-accent-red);
  margin-left: var(--space-1);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="search"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--color-text-muted);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-alpha-20);
}

input.error,
select.error,
textarea.error {
  border-color: var(--color-accent-red);
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-accent-red);
  margin-top: var(--space-1);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23636E72' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

/* Search Box */
.search-box {
  position: relative;
}

.search-box input {
  padding-left: var(--space-10);
}

.search-box .search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  font-size: var(--text-md);
}

.search-box .search-clear {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.search-box .search-clear:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

/* Checkbox / Radio custom */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}


/* ==========================================================================
   12. Footer
   ========================================================================== */

.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-16) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--space-5);
}

.footer-about p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
  padding-left: var(--space-2);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-md);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-6) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
  text-align: center;
}

.footer-bottom p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.45);
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-bottom-links a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.45);
  text-decoration: none;
}

.footer-bottom-links a:hover {
  color: var(--color-primary);
}


/* ==========================================================================
   13. Sections
   ========================================================================== */

.section {
  padding: var(--space-16) 0;
}

.section-sm {
  padding: var(--space-12) 0;
}

.section-lg {
  padding: var(--space-24) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-12);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: var(--text-md);
}

.section-dark {
  background: var(--color-dark);
  color: var(--color-text-inverse);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-text-inverse);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.75);
}

.section-dark .section-header p {
  color: rgba(255, 255, 255, 0.65);
}

.section-gray {
  background: var(--color-bg);
}


/* ==========================================================================
   14. Breadcrumbs
   ========================================================================== */

.breadcrumb {
  padding: var(--space-4) 0;
  font-size: var(--text-sm);
}

.breadcrumb,
.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.breadcrumb .separator {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.breadcrumb .separator::after {
  content: '/';
}

.breadcrumb .current,
.breadcrumb-list li[aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

/* Add separators between breadcrumb list items */
.breadcrumb-list li + li::before {
  content: '/';
  color: var(--color-text-muted);
  margin-right: var(--space-2);
  font-size: var(--text-xs);
}

.breadcrumb-list li a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-list li a:hover {
  color: var(--color-primary);
}


/* ==========================================================================
   15. Utility Classes
   ========================================================================== */

/* Margin top */
.mt-1 { margin-top: var(--space-2); }      /* 8px */
.mt-2 { margin-top: var(--space-4); }      /* 16px */
.mt-3 { margin-top: var(--space-6); }      /* 24px */
.mt-4 { margin-top: var(--space-8); }      /* 32px */
.mt-5 { margin-top: var(--space-10); }     /* 40px */
.mt-6 { margin-top: var(--space-12); }     /* 48px */

/* Margin bottom */
.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-4); }
.mb-3 { margin-bottom: var(--space-6); }
.mb-4 { margin-bottom: var(--space-8); }
.mb-5 { margin-bottom: var(--space-10); }
.mb-6 { margin-bottom: var(--space-12); }

/* Padding */
.pt-1 { padding-top: var(--space-2); }
.pt-2 { padding-top: var(--space-4); }
.pt-3 { padding-top: var(--space-6); }
.pb-1 { padding-bottom: var(--space-2); }
.pb-2 { padding-bottom: var(--space-4); }
.pb-3 { padding-bottom: var(--space-6); }

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Text colors */
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-text-secondary) !important; }
.text-success { color: var(--color-accent-green) !important; }
.text-danger { color: var(--color-accent-red) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-white { color: var(--color-text-inverse) !important; }
.text-muted { color: var(--color-text-muted) !important; }

/* Background utilities */
.bg-primary { background-color: var(--color-primary) !important; }
.bg-dark { background-color: var(--color-dark) !important; }
.bg-surface { background-color: var(--color-surface) !important; }
.bg-gray { background-color: var(--color-bg) !important; }

/* Font weight */
.fw-400 { font-weight: 400; }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Visibility */
.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.invisible {
  visibility: hidden;
}

/* Width */
.w-full { width: 100%; }

/* Overflow */
.overflow-hidden { overflow: hidden; }


/* ==========================================================================
   16. Animations
   ========================================================================== */

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

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

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

.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in.visible {
  opacity: 1;
  transform: translateX(0);
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* Stagger animation delays for children */
.stagger-children > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children > *:nth-child(6) { transition-delay: 0.3s; }

/* Skeleton loader */
.skeleton {
  background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-bg) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
  width: 100%;
}

.skeleton-title {
  height: 1.5em;
  margin-bottom: var(--space-3);
  width: 60%;
}

.skeleton-circle {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}


/* ==========================================================================
   17. WhatsApp Floating Button
   ========================================================================== */

.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 56px;
  height: 56px;
  background: #25D366;
  color: #FFFFFF;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.35);
  z-index: var(--z-whatsapp);
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
  color: #FFFFFF;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + var(--space-3));
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
}


/* ==========================================================================
   18. Skip-to-Content
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: calc(var(--z-nav) + 10);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-primary-dark);
  outline-offset: 2px;
}


/* ==========================================================================
   19. Article Styles
   ========================================================================== */

.article-content {
  max-width: 720px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.article-content h2 {
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  font-size: var(--text-2xl);
}

.article-content h3 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  font-size: var(--text-xl);
}

.article-content p {
  margin-bottom: var(--space-5);
  font-size: var(--text-md);
  color: var(--color-text-secondary);
}

.article-content ul,
.article-content ol {
  margin: var(--space-4) 0;
  padding-left: var(--space-6);
}

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

.article-content li {
  margin-bottom: var(--space-2);
  font-size: var(--text-md);
  color: var(--color-text-secondary);
}

.article-content li::marker {
  color: var(--color-primary);
}

.article-content img {
  border-radius: var(--radius-lg);
  margin: var(--space-8) 0;
  box-shadow: var(--shadow-md);
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.article-content a:hover {
  color: var(--color-primary-dark);
  text-decoration-thickness: 2px;
}

/* Article meta */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.article-meta .meta-author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  color: var(--color-text);
}

.article-meta .meta-author img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.article-meta .meta-divider {
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-text-muted);
}

.article-meta .meta-date,
.article-meta .meta-reading-time {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* Table of Contents sidebar */
.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.toc {
  display: none;
  position: sticky;
  top: 100px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.toc h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.toc ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.toc a {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.toc a:hover {
  color: var(--color-primary);
  background: var(--color-primary-alpha-10);
}

.toc a.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: var(--color-primary-alpha-10);
  font-weight: 500;
}

.toc a.toc-h3 {
  padding-left: var(--space-6);
  font-size: var(--text-xs);
}


/* ==========================================================================
   22. Province Tabs (Driving School Finder)
   ========================================================================== */

.province-tabs {
  display: flex;
  overflow-x: auto;
  gap: var(--space-1);
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-8);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.province-tabs::-webkit-scrollbar {
  display: none;
}

.province-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
  border: none;
  background: none;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}

.province-tab::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  transition: background var(--transition-fast);
}

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

.province-tab.active {
  color: var(--color-primary);
  font-weight: 600;
}

.province-tab.active::after {
  background: var(--color-primary);
}

.province-content {
  display: none;
}

.province-content.active {
  display: block;
  animation: fadeInUp 0.3s ease;
}


/* ==========================================================================
   23. Related Tests Section (Test Pages)
   ========================================================================== */

.related-tests {
  padding: var(--space-16) 0 var(--space-12);
  background: var(--color-bg);
}

.related-tests .section-title {
  text-align: center;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-10);
  position: relative;
}

.related-tests .section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  margin: var(--space-3) auto 0;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.related-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

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

.related-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-alpha-10);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  transition: background var(--transition-base), color var(--transition-base);
}

.related-card:hover .related-card-icon {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.related-card h3 {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.related-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-4);
}

.related-card-cta {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}

.related-card:hover .related-card-cta {
  color: var(--color-primary-dark);
}


/* ==========================================================================
   24. Study CTA Section (Test Pages)
   ========================================================================== */

.study-cta {
  padding: var(--space-12) 0 var(--space-16);
}

.study-cta-card {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-light) 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.study-cta-card::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 180, 170, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.study-cta-card h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
  position: relative;
}

.study-cta-card p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-md);
  line-height: var(--leading-normal);
  max-width: 540px;
  margin: 0 auto var(--space-8);
  position: relative;
}

.study-cta-card .btn {
  position: relative;
}


/* ==========================================================================
   20. Responsive Breakpoints
   ========================================================================== */

/* sm — 480px */
@media (min-width: 480px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: var(--text-4xl);
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* md — 768px */
@media (min-width: 768px) {
  :root {
    --container-padding: var(--space-8);
  }

  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Navigation — show desktop links, hide hamburger */
  .hamburger {
    display: none;
  }

  .mobile-menu {
    display: none !important;
  }

  .nav-links {
    display: flex;
  }

  .nav-cta {
    display: inline-flex;
  }

  /* Hero */
  .hero {
    padding: var(--space-20) 0;
  }

  .hero h1 {
    font-size: var(--text-4xl);
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Section */
  .section {
    padding: var(--space-20) 0;
  }

  /* Article layout with TOC */
  .article-layout {
    grid-template-columns: 1fr 240px;
  }

  .toc {
    display: block;
  }

  /* Related tests grid — 2 cols on tablet */
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* lg — 1024px */
@media (min-width: 1024px) {
  h1 { font-size: var(--text-5xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero h1 {
    font-size: var(--text-5xl);
  }

  .hero-stats {
    gap: var(--space-12);
  }

  .hero-stat .stat-number {
    font-size: var(--text-3xl);
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .article-layout {
    grid-template-columns: 1fr 260px;
  }

  /* Related tests grid — 3 cols on desktop */
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* xl — 1200px */
@media (min-width: 1200px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .navbar-inner,
  .navbar > .container {
    height: 72px;
  }
}


/* ==========================================================================
   21. Accessibility
   ========================================================================== */

/* Focus visible outlines */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Remove default focus ring for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* High contrast selections */
::selection {
  background: var(--color-primary-alpha-20);
  color: var(--color-text);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in-up,
  .slide-in {
    opacity: 1;
    transform: none;
  }

  .card:hover {
    transform: none;
  }
}

/* Ensure anchor targets are not hidden behind sticky nav */
[id] {
  scroll-margin-top: 80px;
}

/* Print styles */
@media print {
  .navbar,
  .footer,
  .whatsapp-float,
  .skip-link,
  .hamburger,
  .mobile-menu {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href]::after {
    content: ' (' attr(href) ')';
    font-size: 10pt;
    color: #666;
  }
}