/* ============================================================
   LearnStack — Education & Online Learning Theme
   main.css — Light Only
   ============================================================ */

/* ------------------------------------------------------------
   0. CUSTOM PROPERTIES
   ------------------------------------------------------------ */
:root {
  /* Color Palette */
  --color-bg:             #FAFAFF;
  --color-surface:        #FFFFFF;
  --color-surface-2:      #F1F0FF;
  --color-border:         #E0DFF0;
  --color-border-strong:  #C8C6E0;
  --color-text:           #1E1B3A;
  --color-text-2:         #4A4668;
  --color-text-3:         #8280A0;
  --color-accent:         #4F46E5;
  --color-accent-hover:   #4338CA;
  --color-accent-light:   #EEF2FF;
  --color-ink:            #1E1B3A;
  --color-success:        #059669;
  --color-highlight:      #FEF08A;
  --color-warning:        #D97706;
  --color-error:          #DC2626;

  /* Difficulty badge colors */
  --color-beginner:       #059669;
  --color-beginner-bg:    #ECFDF5;
  --color-intermediate:   #D97706;
  --color-intermediate-bg:#FFFBEB;
  --color-advanced:       #DC2626;
  --color-advanced-bg:    #FEF2F2;

  /* Typography */
  --font-display:  'Bricolage Grotesque', system-ui, sans-serif;
  --font-body:     'Newsreader', Georgia, 'Times New Roman', serif;
  --font-ui:       'Bricolage Grotesque', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  /* Spacing */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Layout */
  --max-width:        1200px;
  --article-width:    740px;
  --sidebar-width:    320px;
  --header-height:    64px;
  --radius:           10px;
  --radius-sm:        6px;
  --radius-lg:        16px;
  --radius-full:      9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(79,70,229,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 12px rgba(79,70,229,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 8px 24px rgba(79,70,229,0.10), 0 4px 8px rgba(0,0,0,0.06);

  /* Transitions */
  --transition: 0.18s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol { list-style: none; }

button {
  font-family: var(--font-ui);
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font-ui);
}

/* ------------------------------------------------------------
   2. ACCESSIBILITY UTILITIES
   ------------------------------------------------------------ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  z-index: 10000;
  transition: top var(--transition);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ------------------------------------------------------------
   3. LAYOUT UTILITIES
   ------------------------------------------------------------ */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-12);
  align-items: start;
}

/* Thin notebook-paper ruled lines decorative element */
.ruled-decoration {
  background-image: repeating-linear-gradient(
    transparent,
    transparent 27px,
    var(--color-border) 28px
  );
}

/* ------------------------------------------------------------
   4. READING PROGRESS BAR
   ------------------------------------------------------------ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #818CF8);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ------------------------------------------------------------
   5. HEADER & NAVBAR
   ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.navbar {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar__logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar__logo:hover { color: var(--color-accent); }

.navbar__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}

.navbar__nav-link {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-2);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.navbar__nav-link:hover,
.navbar__nav-link[aria-current="page"] {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.navbar__dropdown {
  position: relative;
}

.navbar__dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2);
  min-width: 180px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 100;
}

.navbar__dropdown:hover .navbar__dropdown-menu,
.navbar__dropdown:focus-within .navbar__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.navbar__dropdown-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.navbar__dropdown-link:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.navbar__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn-cta {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn-cta:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-1px);
}

/* Mobile menu toggle */
.navbar__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.navbar__mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ------------------------------------------------------------
   6. MOBILE MENU
   ------------------------------------------------------------ */
.mobile-menu-toggle { display: none; }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(30,27,58,0.5);
  backdrop-filter: blur(4px);
}

.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 90vw);
  background: var(--color-surface);
  padding: var(--space-6);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-menu-toggle:checked ~ .mobile-menu {
  display: block;
}

.mobile-menu-toggle:checked ~ .mobile-menu .mobile-menu__panel {
  transform: translateX(0);
}

/* ------------------------------------------------------------
   7. HERO SECTION
   ------------------------------------------------------------ */
.hero {
  padding: var(--space-20) 0 var(--space-16);
  background: var(--color-surface);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0%, #818CF8 50%, var(--color-accent-light) 100%);
}

.hero__inner {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: var(--space-12);
  align-items: center;
}

.hero__label {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 800;
  color: var(--color-ink);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}

.hero__subtext {
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--color-text-2);
  line-height: 1.6;
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
}

.btn-primary {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  padding: 14px var(--space-8);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 14px rgba(79,70,229,0.3);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79,70,229,0.4);
}

.btn-outline {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  background: transparent;
  border: 2px solid var(--color-accent);
  padding: 12px var(--space-8);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-2px);
}

/* Learning Path Graphic (CSS only) */
.hero__graphic {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: var(--space-6);
  position: relative;
}

.learning-path {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  width: 100%;
  max-width: 300px;
}

.learning-path__node {
  width: 100%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  text-align: left;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.learning-path__node:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.learning-path__node--active {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  box-shadow: var(--shadow-md);
}

.learning-path__node--completed {
  border-color: var(--color-success);
  background: #ECFDF5;
}

.learning-path__node-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-3);
  margin-bottom: var(--space-1);
}

.learning-path__node-title {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
}

.learning-path__connector {
  width: 2px;
  height: 24px;
  background: repeating-linear-gradient(
    to bottom,
    var(--color-accent) 0,
    var(--color-accent) 4px,
    transparent 4px,
    transparent 8px
  );
  flex-shrink: 0;
}

.learning-path__connector--completed {
  background: var(--color-success);
}

.learning-path__node-check {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 20px;
  height: 20px;
  background: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}

/* ------------------------------------------------------------
   8. SECTION HEADINGS
   ------------------------------------------------------------ */
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-border);
}

.section-heading__title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  position: relative;
}

.section-heading__title::after {
  content: '';
  position: absolute;
  bottom: -18px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-heading__link {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.section-heading__link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* ------------------------------------------------------------
   9. CARDS
   ------------------------------------------------------------ */
/* Standard Article Card */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--color-accent);
  border-radius: var(--radius) 0 0 var(--radius);
  transition: width var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.card:hover::before {
  width: 3px;
}

.card__image-wrap {
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--color-surface-2);
}

.card__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card__image-wrap img {
  transform: scale(1.04);
}

.card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: var(--space-3);
}

.card__badges {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.badge-category {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.badge-difficulty {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.badge-difficulty--beginner {
  color: var(--color-beginner);
  background: var(--color-beginner-bg);
}

.badge-difficulty--intermediate {
  color: var(--color-intermediate);
  background: var(--color-intermediate-bg);
}

.badge-difficulty--advanced {
  color: var(--color-error);
  background: var(--color-advanced-bg);
}

.card__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.3;
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

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

.card__excerpt {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--color-text-3);
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.card__meta-author { font-weight: 600; color: var(--color-text-2); }

.card__meta-dot {
  width: 3px;
  height: 3px;
  background: var(--color-border-strong);
  border-radius: 50%;
}

/* Wide Card */
.card-wide {
  display: flex;
  flex-direction: row;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
  position: relative;
}

.card-wide::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--color-accent);
  transition: width var(--transition);
}

.card-wide:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.card-wide:hover::before { width: 3px; }

.card-wide__image-wrap {
  width: 220px;
  flex-shrink: 0;
  overflow: hidden;
}

.card-wide__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card-wide:hover .card-wide__image-wrap img { transform: scale(1.04); }

.card-wide__body {
  padding: var(--space-5) var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Mini Card */
.card-mini {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.card-mini:last-child { border-bottom: none; }

.card-mini__image {
  width: 68px;
  height: 50px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.card-mini__body { flex: 1; min-width: 0; }

.card-mini__title {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.4;
  margin-bottom: var(--space-1);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-mini__title a {
  color: inherit;
  text-decoration: none;
}

.card-mini__title a:hover { color: var(--color-accent); }

.card-mini__meta {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--color-text-3);
}

/* Category Card */
.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

.category-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.category-card__icon {
  font-size: 28px;
  line-height: 1;
}

.category-card__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
}

.category-card__description {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.5;
  flex: 1;
}

.category-card__count {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
}

/* Card Grids */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

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

.articles-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

/* ------------------------------------------------------------
   10. HOMEPAGE SECTIONS
   ------------------------------------------------------------ */
.homepage-section {
  padding: var(--space-16) 0;
}

.homepage-section + .homepage-section {
  border-top: 1px solid var(--color-border);
}

.homepage-section--alt {
  background: var(--color-surface-2);
}

/* Featured post */
.featured-post {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-10);
  box-shadow: var(--shadow-sm);
}

.featured-post__image-wrap {
  overflow: hidden;
  aspect-ratio: 4/3;
}

.featured-post__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.featured-post:hover .featured-post__image-wrap img { transform: scale(1.03); }

.featured-post__body { padding: var(--space-10); }

.featured-post__label {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.featured-post__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: var(--color-ink);
  line-height: 1.2;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.featured-post__title a {
  color: inherit;
  text-decoration: none;
}

.featured-post__title a:hover { color: var(--color-accent); }

.featured-post__excerpt {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-text-2);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

/* Stats bar */
.stats-bar {
  display: flex;
  gap: var(--space-8);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-12);
}

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

.stats-bar__number {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.stats-bar__label {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-3);
}

/* ------------------------------------------------------------
   11. BLOG LISTING PAGE
   ------------------------------------------------------------ */
.blog-listing {
  padding: var(--space-12) 0 var(--space-16);
}

.blog-listing__header {
  padding: var(--space-12) 0 var(--space-8);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
}

.blog-listing__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.blog-listing__description {
  font-family: var(--font-body);
  font-size: 17px;
  color: var(--color-text-2);
}

/* Category filter bar */
.category-filter-bar {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.filter-pill {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.filter-pill:hover,
.filter-pill--active {
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-color: var(--color-accent);
}

/* ------------------------------------------------------------
   12. SIDEBAR
   ------------------------------------------------------------ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.sidebar__widget {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-6);
}

.sidebar__widget-heading {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Search widget */
.search-form {
  display: flex;
  gap: var(--space-2);
}

.search-input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}

.search-input:focus {
  border-color: var(--color-accent);
  outline: none;
}

.search-btn {
  padding: var(--space-2) var(--space-3);
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-btn:hover { background: var(--color-accent-hover); }

/* Categories widget */
.categories-list { display: flex; flex-direction: column; gap: var(--space-2); }

.categories-list__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-2);
  transition: color var(--transition), background var(--transition);
}

.categories-list__item:hover {
  color: var(--color-accent);
  background: var(--color-surface);
}

.categories-list__count {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-3);
  background: var(--color-surface);
  padding: 1px 8px;
  border-radius: var(--radius-full);
}

/* Tags widget */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-pill {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition);
}

.tag-pill:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-color: var(--color-accent);
}

/* ------------------------------------------------------------
   13. NEWSLETTER
   ------------------------------------------------------------ */
.newsletter-band {
  background: var(--color-ink);
  padding: var(--space-16) 0;
  position: relative;
  overflow: hidden;
}

.newsletter-band::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, rgba(79,70,229,0.15) 100%);
  pointer-events: none;
}

.newsletter-band__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.newsletter-band__heading {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.newsletter-band__subtext {
  font-family: var(--font-body);
  font-size: 17px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

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

.newsletter-form__row {
  display: flex;
  gap: var(--space-2);
}

.newsletter-input {
  flex: 1;
  padding: 14px var(--space-5);
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-full);
  outline: none;
}

.newsletter-input:focus { box-shadow: 0 0 0 3px rgba(79,70,229,0.3); }

.newsletter-btn {
  padding: 14px var(--space-8);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
}

.newsletter-btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.newsletter-fine-print {
  font-family: var(--font-ui);
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

/* Sidebar newsletter widget */
.sidebar-newsletter {
  background: var(--color-accent);
  border-radius: var(--radius);
  padding: var(--space-6);
  color: #fff;
}

.sidebar-newsletter__heading {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.sidebar-newsletter__subtext {
  font-family: var(--font-body);
  font-size: 13px;
  opacity: 0.85;
  margin-bottom: var(--space-4);
  line-height: 1.5;
}

.sidebar-newsletter__input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  border: none;
  font-family: var(--font-ui);
  font-size: 13px;
  margin-bottom: var(--space-2);
  outline: none;
}

.sidebar-newsletter__btn {
  width: 100%;
  padding: var(--space-3);
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  transition: background var(--transition);
}

.sidebar-newsletter__btn:hover { background: #2D2A50; }

/* Inline article newsletter CTA */
.inline-newsletter {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: var(--space-6) var(--space-8);
  margin: var(--space-10) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.inline-newsletter__heading {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
}

.inline-newsletter__subtext {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-2);
}

.inline-newsletter__form {
  display: flex;
  gap: var(--space-2);
}

.inline-newsletter__input {
  flex: 1;
  padding: 10px var(--space-4);
  font-family: var(--font-ui);
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition);
}

.inline-newsletter__input:focus { border-color: var(--color-accent); }

.inline-newsletter__btn {
  padding: 10px var(--space-5);
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  transition: background var(--transition);
}

.inline-newsletter__btn:hover { background: var(--color-accent-hover); }

/* ------------------------------------------------------------
   14. ARTICLE PAGE
   ------------------------------------------------------------ */
.article-hero {
  background: var(--color-surface);
  padding: var(--space-12) 0 0;
  border-bottom: 1px solid var(--color-border);
}

.article-hero__header {
  max-width: var(--article-width);
}

.article-hero__breadcrumb {
  margin-bottom: var(--space-6);
}

.article-hero__badges {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.article-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--color-ink);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-5);
}

.article-hero__excerpt {
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--color-text-2);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 600px;
}

.article-hero__cover {
  margin-top: var(--space-8);
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
  aspect-ratio: 21/9;
}

.article-hero__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Author meta */
.author-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
}

.author-meta__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.author-meta__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-meta__avatar-placeholder {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.author-meta__info { flex: 1; }

.author-meta__name {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-ink);
}

.author-meta__details {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--color-text-3);
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}

.author-meta__read-time {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Article content */
.article-layout {
  display: grid;
  grid-template-columns: var(--article-width) var(--sidebar-width);
  gap: var(--space-12);
  align-items: start;
  padding: var(--space-10) 0 var(--space-16);
  max-width: calc(var(--article-width) + var(--sidebar-width) + var(--space-12));
  margin: 0 auto;
}

.article-body {
  min-width: 0;
}

/* Article typography */
.article-content {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.85;
  color: var(--color-text);
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-ink);
  margin-top: var(--space-12);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-border);
}

.article-content h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.article-content h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.article-content p {
  margin-bottom: var(--space-6);
}

.article-content ul,
.article-content ol {
  margin: var(--space-5) 0 var(--space-6) var(--space-6);
}

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

.article-content li {
  margin-bottom: var(--space-2);
  line-height: 1.7;
}

.article-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover { color: var(--color-accent-hover); }

.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-light);
  padding: var(--space-5) var(--space-6);
  margin: var(--space-8) 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-content blockquote p {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 18px;
  color: var(--color-text-2);
  margin-bottom: 0;
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-accent);
  padding: 2px 6px;
  border-radius: 4px;
}

.article-content pre {
  background: var(--color-ink);
  border-radius: var(--radius);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  overflow-x: auto;
  position: relative;
}

.article-content pre code {
  background: none;
  border: none;
  color: #E2E8F0;
  font-size: 14px;
  padding: 0;
  border-radius: 0;
  line-height: 1.7;
}

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

.article-content strong { font-weight: 700; color: var(--color-ink); }
.article-content em { font-style: italic; }

/* Special education-niche elements */
.learning-objective {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
}

.learning-objective__heading {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.learning-objective ul {
  margin: 0 0 0 var(--space-5);
  list-style: none;
}

.learning-objective ul li {
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--color-text-2);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.learning-objective ul li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.key-concept {
  background: var(--color-highlight);
  border-radius: var(--radius);
  padding: var(--space-5) var(--space-6);
  margin: var(--space-8) 0;
  position: relative;
}

.key-concept::before {
  content: '💡 Key Concept';
  display: block;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #92400E;
  margin-bottom: var(--space-3);
}

.key-concept p,
.key-concept > * {
  font-family: var(--font-body);
  font-size: 16px;
  color: #78350F;
  margin-bottom: 0;
}

/* Code block language label */
.article-content pre[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Tags row */
.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-8) 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.tags-row__label {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-3);
  align-self: center;
  margin-right: var(--space-2);
}

/* Social share */
.social-share {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin: var(--space-8) 0;
  flex-wrap: wrap;
}

.social-share .share-label {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-3);
  margin-right: var(--space-2);
}

.share-btn {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition);
}

.share-btn.twitter  { background: #E7F5FD; color: #1DA1F2; }
.share-btn.facebook { background: #EEF2FF; color: #1877F2; }
.share-btn.linkedin { background: #E8F4FF; color: #0A66C2; }
.share-btn.pinterest { background: #FFF0F0; color: #E60023; }
.share-btn.email    { background: var(--color-surface-2); color: var(--color-text-2); }

.share-btn:hover { filter: brightness(0.9); transform: translateY(-1px); }

/* Author bio card */
.author-bio-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  margin-top: var(--space-12);
}

.author-bio-card__avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.author-bio-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-bio-card__avatar-placeholder {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-ui);
  font-size: 22px;
  font-weight: 700;
  flex-shrink: 0;
}

.author-bio-card__role {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.author-bio-card__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.author-bio-card__bio {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-2);
  line-height: 1.65;
}

.author-bio-card__socials {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.author-bio-card__social-link {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  padding: 4px 12px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.author-bio-card__social-link:hover {
  background: var(--color-accent);
  color: #fff;
}

/* Related articles */
.related-articles {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 2px solid var(--color-border);
}

.related-articles__heading {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: var(--space-6);
}

.related-articles__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

/* ------------------------------------------------------------
   15. BREADCRUMB
   ------------------------------------------------------------ */
.breadcrumb {
  margin-bottom: var(--space-5);
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  list-style: none;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-3);
}

.breadcrumb li:not(:last-child)::after {
  content: '/';
  color: var(--color-border-strong);
}

.breadcrumb a {
  color: var(--color-text-3);
  text-decoration: none;
  transition: color var(--transition);
}

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

.breadcrumb li:last-child { color: var(--color-text-2); }

/* ------------------------------------------------------------
   16. PAGINATION
   ------------------------------------------------------------ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.pagination__link {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition);
}

.pagination__link:hover,
.pagination__link--active {
  color: #fff;
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.pagination__link--prev,
.pagination__link--next {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ------------------------------------------------------------
   17. FOOTER
   ------------------------------------------------------------ */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.8);
  padding-top: var(--space-16);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.footer__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
}

.footer__tagline {
  font-family: var(--font-body);
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: var(--space-5);
}

.footer__socials {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  text-decoration: none;
  transition: background var(--transition);
}

.footer__social-link:hover { background: var(--color-accent); }

.footer__col-heading {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-5);
}

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

.footer__link {
  font-family: var(--font-ui);
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color var(--transition);
}

.footer__link:hover { color: #fff; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) 0;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__copyright {
  font-family: var(--font-ui);
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

.footer__legal-links {
  display: flex;
  gap: var(--space-5);
}

.footer__legal-link {
  font-family: var(--font-ui);
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  transition: color var(--transition);
}

.footer__legal-link:hover { color: rgba(255,255,255,0.7); }

/* ------------------------------------------------------------
   18. ABOUT PAGE
   ------------------------------------------------------------ */
.about-hero {
  background: var(--color-surface-2);
  padding: var(--space-16) 0;
  border-bottom: 1px solid var(--color-border);
}

.about-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.about-hero__label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-5);
}

.about-hero__body {
  font-family: var(--font-body);
  font-size: 17px;
  color: var(--color-text-2);
  line-height: 1.75;
}

.about-visual {
  background: var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about-stat {
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: var(--space-5);
}

.about-stat__number {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.about-stat__label {
  font-family: var(--font-ui);
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  margin-top: var(--space-1);
}

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

.about-content__inner {
  max-width: 720px;
  margin: 0 auto;
}

.about-content__body {
  font-family: var(--font-body);
  font-size: 17px;
  color: var(--color-text-2);
  line-height: 1.8;
}

.about-content__body h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

.about-content__body p { margin-bottom: var(--space-5); }

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.team-card {
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-8) var(--space-6);
}

.team-card__avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-ui);
  font-size: 22px;
  font-weight: 700;
  margin: 0 auto var(--space-4);
}

.team-card__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: var(--space-1);
}

.team-card__role {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.team-card__bio {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-2);
  line-height: 1.6;
}

/* ------------------------------------------------------------
   19. CONTACT PAGE
   ------------------------------------------------------------ */
.contact-hero {
  background: var(--color-surface-2);
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.contact-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.contact-hero__subtext {
  font-family: var(--font-body);
  font-size: 17px;
  color: var(--color-text-2);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  padding: var(--space-16) 0;
}

.contact-form-wrap { }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-2);
}

.form-input,
.form-textarea {
  padding: 12px var(--space-4);
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
}

.form-textarea { min-height: 150px; resize: vertical; }

.form-submit {
  padding: 14px var(--space-8);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  align-self: flex-start;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.form-submit:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info__item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  background: var(--color-accent-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-info__label {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-3);
  margin-bottom: var(--space-1);
}

.contact-info__value {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-2);
}

/* FAQ */
.faq-section {
  padding: var(--space-16) 0;
  background: var(--color-surface-2);
}

.faq-section__heading {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-8);
  text-align: center;
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

.faq-item__question {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  text-align: left;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: none;
  transition: background var(--transition);
}

.faq-item__question:hover { background: var(--color-surface-2); }

.faq-item__question::after {
  content: '+';
  font-size: 20px;
  color: var(--color-accent);
  transition: transform var(--transition);
}

.faq-item[open] .faq-item__question::after { transform: rotate(45deg); }

.faq-item__answer {
  padding: 0 var(--space-6) var(--space-5);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-2);
  line-height: 1.7;
}

/* ------------------------------------------------------------
   20. LEGAL PAGE
   ------------------------------------------------------------ */
.legal-page {
  padding: var(--space-16) 0;
}

.legal-content {
  max-width: 720px;
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-text-2);
  line-height: 1.8;
}

.legal-content h1 {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.legal-content .legal-date {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-3);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.legal-content h2 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

.legal-content p { margin-bottom: var(--space-5); }

.legal-content ul {
  margin: var(--space-4) 0 var(--space-5) var(--space-6);
  list-style: disc;
}

.legal-content li { margin-bottom: var(--space-2); }

/* ------------------------------------------------------------
   21. 404 PAGE
   ------------------------------------------------------------ */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-24) var(--space-6);
  min-height: 60vh;
}

.error-page__code {
  font-family: var(--font-display);
  font-size: clamp(80px, 15vw, 140px);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.05em;
  opacity: 1;
  user-select: none;
  width: 100%;
  text-align: center;
  margin-bottom: var(--space-6);
}

.error-page__content {
  position: relative;
  z-index: 1;
}

.error-page__icon {
  font-size: 56px;
  margin-bottom: var(--space-5);
  line-height: 1;
}

.error-page__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.error-page__message {
  font-family: var(--font-body);
  font-size: 17px;
  color: var(--color-text-2);
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto var(--space-8);
}

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

.error-page__suggestions {
  margin-top: var(--space-12);
  max-width: 720px;
  width: 100%;
}

.error-page__suggestions-heading {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: var(--space-5);
}

/* ------------------------------------------------------------
   22. CATEGORY PAGE
   ------------------------------------------------------------ */
.category-hero {
  background: var(--color-ink);
  padding: var(--space-12) 0;
  position: relative;
  overflow: hidden;
}

.category-hero::after {
  content: '';
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(79,70,229,0.3) 0%, transparent 70%);
  pointer-events: none;
}

.category-hero__inner {
  position: relative;
  z-index: 1;
}

.category-hero__label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-3);
}

.category-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.category-hero__description {
  font-family: var(--font-body);
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  line-height: 1.7;
}

.category-hero__count {
  margin-top: var(--space-5);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

/* ------------------------------------------------------------
   23. PAGE HERO (generic inner pages)
   ------------------------------------------------------------ */
.page-hero {
  background: var(--color-surface-2);
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
}

.page-hero__label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.page-hero__description {
  font-family: var(--font-body);
  font-size: 17px;
  color: var(--color-text-2);
  max-width: 560px;
  line-height: 1.6;
}

/* ------------------------------------------------------------
   24. DECORATIVE ELEMENTS
   ------------------------------------------------------------ */
/* Building block geometric decoration */
.geo-decoration {
  position: absolute;
  opacity: 0.05;
  pointer-events: none;
}

.geo-square {
  width: 120px;
  height: 120px;
  background: var(--color-accent);
  border-radius: var(--radius);
  transform: rotate(15deg);
}

.geo-circle {
  width: 80px;
  height: 80px;
  border: 12px solid var(--color-accent);
  border-radius: 50%;
}

/* Notebook paper lines on certain sections */
.notebook-bg {
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 31px,
    var(--color-border) 31px,
    var(--color-border) 32px
  );
  background-attachment: local;
}

/* ------------------------------------------------------------
   25. PRINT STYLES
   ------------------------------------------------------------ */
@media print {
  .site-header,
  .newsletter-band,
  .site-footer,
  .sidebar,
  .social-share,
  .related-articles,
  .author-bio-card,
  .reading-progress,
  .pagination,
  .category-filter-bar {
    display: none !important;
  }

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

  .article-content {
    max-width: 100%;
    font-size: 12pt;
  }

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

  .article-hero__title,
  .article-content h2,
  .article-content h3 {
    color: #000;
  }
}

/* ------------------------------------------------------------
   26. RESPONSIVE
   ------------------------------------------------------------ */
@media (max-width: 1100px) {
  .content-grid,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .sidebar { display: none; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__graphic { display: none; }
  .newsletter-band__inner { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .related-articles__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container { padding-inline: var(--space-4); }
  .articles-grid { grid-template-columns: 1fr; }
  .card-wide { flex-direction: column; }
  .card-wide__image-wrap { width: 100%; height: 200px; }
  .featured-post { grid-template-columns: 1fr; }
  .about-hero__inner { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .related-articles__grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .navbar__nav { display: none; }
  .navbar__actions { display: none; }
  .navbar__mobile-toggle { display: flex; }
  .stats-bar { flex-wrap: wrap; gap: var(--space-6); }
  .newsletter-form__row { flex-direction: column; }
  .inline-newsletter__form { flex-direction: column; }
  .author-bio-card { flex-direction: column; }
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .about-visual { display: none; }
}

@media (max-width: 480px) {
  .categories-grid { grid-template-columns: 1fr; }
  .hero__headline { font-size: 32px; }
}