/* ============================================
   Alexandre Chaimbault - Personal Website
   Style Apple-inspired, Liquid Glass
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --white: #ffffff;
  --off-white: #fafafa;
  --gray-50: #f5f5f7;
  --gray-100: #e8e8ed;
  --gray-200: #d2d2d7;
  --gray-400: #86868b;
  --gray-600: #6e6e73;
  --gray-700: #424245;
  --gray-900: #1d1d1f;
  --black: #000000;
  --blue: #0071e3;
  --blue-hover: #0077ed;
  --blue-light: rgba(0, 113, 227, 0.08);
  --blue-glass: rgba(0, 113, 227, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.1);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  --max-width: 1200px;
  --nav-height: 64px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Skip Link (A11y) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--blue);
  color: var(--white);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  z-index: 10000;
  font-weight: 600;
}

.skip-link:focus {
  top: 16px;
  color: var(--white);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.nav.scrolled {
  background: var(--glass-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

.nav-logo span {
  color: var(--blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--gray-600);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--gray-900);
}

.nav-cta {
  background: var(--blue);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 980px;
  font-size: 14px !important;
  font-weight: 600 !important;
  transition: background var(--transition), transform var(--transition) !important;
}

.nav-cta:hover {
  background: var(--blue-hover);
  color: var(--white) !important;
  transform: scale(1.02);
}

/* --- Nav Dropdown (inspired by Lokan mega-menu, simplified) --- */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  color: var(--gray-600);
  font-size: 14px;
  font-weight: 500;
  padding: 0;
  transition: color var(--transition);
}

.nav-dropdown-trigger:hover {
  color: var(--gray-900);
}

.nav-dropdown-trigger svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
  transition: transform var(--transition);
}

.nav-dropdown.open .nav-dropdown-trigger svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 520px;
  background: var(--glass-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 100;
}

.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  color: var(--gray-900) !important;
  font-size: 14px !important;
}

.nav-dropdown-item:hover {
  background: var(--gray-50);
  color: var(--gray-900) !important;
}

.nav-dropdown-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-dropdown-icon svg {
  width: 20px;
  height: 20px;
  fill: var(--blue);
}

.nav-dropdown-text {
  display: flex;
  flex-direction: column;
}

.nav-dropdown-text strong {
  font-weight: 600;
  font-size: 14px;
  line-height: 1.3;
}

.nav-dropdown-text small {
  font-size: 12px;
  color: var(--gray-400);
  font-weight: 400;
}

/* --- Featured Content Strip (Lokan-style editorial) --- */
.featured-strip {
  padding: 0 0 80px;
  margin-top: -40px;
  position: relative;
  z-index: 2;
}

.featured-strip-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
}

.featured-main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--gray-100);
  cursor: pointer;
}

.featured-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.featured-main:hover img {
  transform: scale(1.04);
}

.featured-main-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.1) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
}

.featured-main-overlay .content-card-category {
  position: static;
  align-self: flex-start;
  margin-bottom: 12px;
  background: rgba(255,255,255,0.2);
  color: var(--white);
}

.featured-main-overlay h3 {
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.featured-main-overlay p {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  line-height: 1.5;
  max-width: 480px;
}

.featured-main-overlay .content-card-meta {
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
}

.featured-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.featured-sidebar-card {
  display: flex;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
  flex: 1;
  align-items: center;
  text-decoration: none;
}

.featured-sidebar-card:hover {
  border-color: var(--gray-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.featured-sidebar-thumb {
  width: 100px;
  height: 72px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--gray-100);
  flex-shrink: 0;
}

.featured-sidebar-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-sidebar-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.featured-sidebar-body .content-card-category {
  position: static;
  align-self: flex-start;
  font-size: 11px;
  padding: 2px 8px;
  margin-bottom: 6px;
  background: var(--blue-light);
  color: var(--blue);
  backdrop-filter: none;
}

.featured-sidebar-body h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-sidebar-body .content-card-meta {
  font-size: 12px;
  margin-bottom: 0;
}

/* --- Dense Content Grid (Magazine-style) --- */
.content-grid-magazine {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.content-card-compact {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}

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

.content-card-compact .content-card-image {
  aspect-ratio: 16/10;
}

.content-card-compact .content-card-body {
  padding: 16px;
}

.content-card-compact .content-card-title {
  font-size: 15px;
  margin-bottom: 8px;
}

.content-card-compact .content-card-meta {
  font-size: 12px;
  gap: 8px;
}

.content-card-compact .content-card-excerpt {
  display: none;
}

.content-card-compact .content-card-link {
  font-size: 13px;
  margin-top: 10px;
}

/* --- Category Filter Bar (Lokan-style) --- */
.category-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 40px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.category-bar::-webkit-scrollbar {
  display: none;
}

.category-pill {
  padding: 8px 20px;
  border-radius: 980px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  background: var(--white);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  font-family: inherit;
}

.category-pill:hover {
  border-color: var(--gray-400);
  color: var(--gray-900);
}

.category-pill.active {
  background: var(--gray-900);
  border-color: var(--gray-900);
  color: var(--white);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-900);
  margin: 5px 0;
  transition: var(--transition);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, var(--blue-light) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(0, 113, 227, 0.04) 0%, transparent 50%);
  animation: heroGlow 20s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-5%, 5%) scale(1.1); }
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 8px 20px;
  border-radius: 980px;
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--blue);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(44px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--gray-900);
  margin-bottom: 24px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--blue), #00c6ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--gray-600);
  line-height: 1.5;
  max-width: 600px;
  margin: 0 auto 40px;
  font-weight: 400;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: 980px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.3);
}

.btn-primary:hover {
  background: var(--blue-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 113, 227, 0.4);
}

.btn-secondary {
  background: var(--gray-50);
  color: var(--gray-900);
}

.btn-secondary:hover {
  background: var(--gray-100);
  color: var(--gray-900);
  transform: translateY(-2px);
}

.btn-arrow {
  transition: transform var(--transition);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--gray-100);
}

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

.hero-stat-number {
  font-size: 32px;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

.hero-stat-label {
  font-size: 14px;
  color: var(--gray-400);
  margin-top: 4px;
}

/* --- Section Commons --- */
.section {
  padding: 120px 0;
}

.section-alt {
  background: var(--gray-50);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--gray-900);
  margin-bottom: 20px;
}

.section-desc {
  font-size: 18px;
  color: var(--gray-600);
  line-height: 1.6;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: var(--gray-100);
}

.about-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-image-float {
  position: absolute;
  bottom: -20px;
  right: -20px;
  padding: 20px 28px;
  z-index: 2;
}

.about-content h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.about-content p {
  color: var(--gray-600);
  margin-bottom: 16px;
  font-size: 17px;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.about-tag {
  padding: 8px 18px;
  background: var(--blue-light);
  color: var(--blue);
  border-radius: 980px;
  font-size: 14px;
  font-weight: 500;
}

/* --- Content / Videos Grid --- */
.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.content-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: transform var(--transition), box-shadow var(--transition);
}

.content-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.content-card-image {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--gray-100);
  overflow: hidden;
}

.content-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.content-card:hover .content-card-image img {
  transform: scale(1.05);
}

.content-card-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: opacity var(--transition);
}

.content-card:hover .content-card-play {
  opacity: 1;
}

.content-card-play svg {
  width: 48px;
  height: 48px;
  fill: var(--white);
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.content-card-category {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 980px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-700);
}

.content-card-body {
  padding: 24px;
}

.content-card-meta {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.content-card-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--gray-900);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.content-card-excerpt {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.5;
}

.content-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--blue);
}

.content-card-link:hover {
  gap: 10px;
}

/* --- YouTube Channels --- */
.channels-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.channel-card {
  padding: 32px 24px;
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}

.channel-card:hover {
  border-color: var(--blue);
  box-shadow: 0 0 0 1px var(--blue), var(--shadow-md);
  transform: translateY(-4px);
}

.channel-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--blue-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.channel-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--blue);
}

.channel-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.channel-desc {
  font-size: 13px;
  color: var(--gray-400);
}

/* --- Formations Section --- */
.formations-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.formation-card {
  padding: 40px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

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

.formation-card.featured {
  background: var(--gray-900);
  border-color: var(--gray-900);
  grid-column: 1 / -1;
}

.formation-card.featured * {
  color: var(--white);
}

.formation-card.featured .formation-tag {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.8);
}

.formation-card.featured .formation-price {
  color: var(--white);
}

.formation-card.featured .btn-primary {
  background: var(--white);
  color: var(--gray-900);
}

.formation-card.featured .btn-primary:hover {
  background: var(--gray-100);
}

.formation-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--blue-light);
  color: var(--blue);
  border-radius: 980px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.formation-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.formation-desc {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 24px;
}

.formation-price {
  font-size: 32px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 24px;
}

.formation-price small {
  font-size: 16px;
  font-weight: 400;
  color: var(--gray-400);
}

/* --- Promo Card (Affiliate CTA - high visibility) --- */
.promo-card {
  position: relative;
  margin: 40px 0;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(20, 20, 35, 0.85) 0%, rgba(30, 30, 50, 0.8) 100%);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1);
  color: var(--white);
  overflow: hidden;
}

.promo-card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.3) 0%, transparent 70%);
  pointer-events: none;
}

.promo-card::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(100, 100, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.promo-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(0, 113, 227, 0.2);
  border: 1px solid rgba(0, 113, 227, 0.3);
  border-radius: 980px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #60a5fa;
  margin-bottom: 16px;
}

.promo-card-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #60a5fa;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.promo-card-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  color: var(--white);
  position: relative;
}

.promo-card-desc {
  font-size: 15px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7) !important;
  margin-bottom: 20px;
  max-width: 520px;
  position: relative;
}

.promo-card * {
  color: var(--white);
}

.promo-card .promo-card-desc {
  color: rgba(255, 255, 255, 0.7) !important;
}

.promo-card .promo-card-note {
  color: rgba(255, 255, 255, 0.4) !important;
}

.promo-card .promo-card-badge {
  color: #60a5fa !important;
}

.promo-card .promo-card-feature {
  color: rgba(255, 255, 255, 0.8) !important;
}

.promo-card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
  position: relative;
}

.promo-card-feature {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

.promo-card-feature svg {
  width: 16px;
  height: 16px;
  stroke: #34d399;
  fill: none;
  flex-shrink: 0;
}

.promo-card .btn-primary {
  background: var(--blue);
  color: var(--white);
  position: relative;
  font-size: 15px;
  padding: 14px 28px;
}

.promo-card .btn-primary:hover {
  background: var(--blue-hover);
  box-shadow: 0 4px 20px rgba(0, 113, 227, 0.5);
}

.promo-card-note {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  margin-top: 12px;
  position: relative;
}

/* Sticky affiliate CTA (appears on scroll, desktop only) */
.sticky-promo {
  position: fixed;
  bottom: 24px;
  z-index: 800;
  background: var(--glass-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 600px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  transform: translateY(100px);
  /* Fallback centered on screen */
  left: 50%;
  margin-left: -300px;
}

.sticky-promo.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.sticky-promo-text {
  flex: 1;
  min-width: 0;
}

.sticky-promo-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sticky-promo-sub {
  font-size: 12px;
  color: var(--gray-400);
}

.sticky-promo .btn-primary {
  font-size: 13px;
  padding: 10px 20px;
  white-space: nowrap;
  flex-shrink: 0;
}

.sticky-promo-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--gray-400);
  flex-shrink: 0;
}

.sticky-promo-close svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

@media (max-width: 768px) {
  .promo-card {
    padding: 24px;
    margin: 28px -20px;
    border-radius: 0;
  }

  .promo-card-title {
    font-size: 19px;
  }

  .promo-card-features {
    flex-direction: column;
    gap: 8px;
  }

  .sticky-promo {
    bottom: 72px;
    border-radius: var(--radius-md);
  }
}

/* --- Newsletter Section --- */
.newsletter {
  text-align: center;
  padding: 100px 24px;
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--blue-light) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter-content {
  position: relative;
  z-index: 1;
  max-width: 560px;
  margin: 0 auto;
}

.newsletter h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.newsletter p {
  font-size: 17px;
  color: var(--gray-600);
  margin-bottom: 32px;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 16px 24px;
  border: 1px solid var(--gray-200);
  border-radius: 980px;
  font-size: 16px;
  font-family: inherit;
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}

.newsletter-form input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-light);
}

.newsletter-form button {
  padding: 16px 32px;
  border-radius: 980px;
  background: var(--blue);
  color: var(--white);
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition);
  white-space: nowrap;
}

.newsletter-form button:hover {
  background: var(--blue-hover);
}

/* --- Footer --- */
.footer {
  background: var(--gray-900);
  color: var(--gray-200);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 15px;
  color: var(--gray-400);
  margin-top: 16px;
  line-height: 1.6;
  max-width: 280px;
}

.footer h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  color: var(--gray-400);
  font-size: 15px;
  padding: 6px 0;
  transition: color var(--transition);
}

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

.footer-socials {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

.footer-social {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.footer-social:hover {
  background: var(--blue);
}

.footer-social svg {
  width: 18px;
  height: 18px;
  fill: var(--white);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--gray-400);
}

.footer-bottom a {
  color: var(--gray-400);
}

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

/* --- Blog Page --- */
.blog-hero {
  padding: 140px 0 60px;
  text-align: center;
  background: var(--gray-50);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.blog-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}

.blog-featured-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--gray-100);
}

.blog-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Article Page (Lokan-inspired) --- */

/* Reading progress bar */
.reading-progress {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--blue);
  z-index: 999;
  transition: width 0.1s linear;
}

/* Article header */
.article-header {
  padding: 140px 0 48px;
  text-align: center;
  background: var(--gray-50);
}

.article-header .container {
  max-width: 800px;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 14px;
  color: var(--gray-400);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-meta-divider {
  width: 4px;
  height: 4px;
  background: var(--gray-200);
  border-radius: 50%;
}

.article-category-tag {
  padding: 4px 14px;
  background: var(--blue-light);
  color: var(--blue);
  border-radius: 980px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.article-subtitle {
  font-size: 18px;
  color: var(--gray-600);
  line-height: 1.6;
  max-width: 640px;
  margin: 0 auto 32px;
}

/* Author bar */
.article-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-100);
}

.article-author-avatar {
  width: 44px;
  min-width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gray-100);
  overflow: hidden;
  flex-shrink: 0;
}

.article-author-avatar img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover;
  object-position: center center;
  border-radius: 50%;
}

.article-author-info {
  text-align: left;
}

.article-author-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
}

.article-author-date {
  font-size: 13px;
  color: var(--gray-400);
}

/* Article layout with sidebar TOC */
.article-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  max-width: 1060px;
  margin: 0 auto;
  padding: 48px 24px 120px;
  position: relative;
}

/* Table of Contents (sidebar sticky) */
.article-toc {
  position: sticky;
  top: calc(var(--nav-height) + 32px);
  align-self: start;
  max-height: calc(100vh - var(--nav-height) - 64px);
  overflow-y: auto;
  scrollbar-width: none;
}

.article-toc::-webkit-scrollbar {
  display: none;
}

.article-toc-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-400);
  margin-bottom: 16px;
}

.article-toc-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.article-toc-link {
  display: block;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 400;
  color: var(--gray-400);
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
  transition: all 0.15s ease;
  line-height: 1.4;
}

.article-toc-link:hover {
  color: var(--gray-700);
  background: var(--gray-50);
}

.article-toc-link.active {
  color: var(--blue);
  font-weight: 600;
  border-left-color: var(--blue);
  background: var(--blue-light);
}

.article-toc-link.toc-h3 {
  padding-left: 24px;
  font-size: 12px;
}

/* Mobile TOC - sticky bottom sheet */
.article-toc-mobile {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.08);
  transition: transform var(--transition);
}

.article-toc-mobile-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  background: var(--white);
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.article-toc-mobile-trigger svg {
  width: 16px;
  height: 16px;
  fill: var(--gray-400);
  transition: transform var(--transition);
}

.article-toc-mobile.open .article-toc-mobile-trigger svg {
  transform: rotate(180deg);
}

.article-toc-mobile-list {
  display: none;
  padding: 0 16px 16px;
  max-height: 50vh;
  overflow-y: auto;
}

.article-toc-mobile.open .article-toc-mobile-list {
  display: block;
}

.article-toc-mobile-list a {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  color: var(--gray-600);
  border-radius: 8px;
}

.article-toc-mobile-list a:hover,
.article-toc-mobile-list a.active {
  color: var(--blue);
  background: var(--blue-light);
}

.article-toc-mobile-list a.toc-h3 {
  padding-left: 28px;
  font-size: 14px;
  color: var(--gray-400);
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  z-index: 800;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--blue);
  border-color: var(--blue);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  fill: var(--gray-600);
  transition: fill var(--transition);
}

.back-to-top:hover svg {
  fill: var(--white);
}

/* Article main content */
.article-content {
  max-width: 720px;
  min-width: 0;
}

.article-content h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 48px 0 20px;
  color: var(--gray-900);
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 36px 0 16px;
  color: var(--gray-900);
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.article-content p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--gray-700);
  margin-bottom: 24px;
}

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
  list-style: disc;
}

.article-content li {
  font-size: 18px;
  line-height: 1.7;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 3px solid var(--blue);
  padding: 20px 28px;
  margin: 32px 0;
  background: var(--blue-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 18px;
  color: var(--gray-700);
  font-style: italic;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 32px 0;
}

/* Callout boxes */
.callout {
  padding: 24px 28px;
  margin: 32px 0;
  border-radius: var(--radius-md);
  font-size: 16px;
  line-height: 1.6;
}

.callout-title {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.callout-tip {
  background: rgba(0, 180, 100, 0.08);
  border: 1px solid rgba(0, 180, 100, 0.2);
}

.callout-tip .callout-title {
  color: #00a854;
}

.callout-warning {
  background: rgba(240, 180, 0, 0.08);
  border: 1px solid rgba(240, 180, 0, 0.2);
}

.callout-warning .callout-title {
  color: #c49000;
}

.callout-info {
  background: var(--blue-light);
  border: 1px solid rgba(0, 113, 227, 0.15);
}

.callout-info .callout-title {
  color: var(--blue);
}

/* Video embed */
.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin: 40px 0;
  box-shadow: var(--shadow-lg);
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--gray-400);
}

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

.breadcrumb-sep {
  font-size: 11px;
  color: var(--gray-200);
}

/* Clickable H2/H3 anchor links */
.article-content h2,
.article-content h3 {
  position: relative;
}

.heading-anchor {
  position: absolute;
  left: -28px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity var(--transition);
  color: var(--gray-200);
  text-decoration: none;
  font-size: 18px;
  font-weight: 400;
  padding: 4px 8px;
}

.article-content h2:hover .heading-anchor,
.article-content h3:hover .heading-anchor {
  opacity: 1;
}

.heading-anchor:hover {
  color: var(--blue);
}

@media (max-width: 768px) {
  .heading-anchor {
    display: none;
  }
}

/* Mini CTA mid-article */
.mini-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  margin: 36px 0;
  border-radius: var(--radius-md);
  background: var(--blue-light);
  border: 1px solid rgba(0, 113, 227, 0.12);
}

.mini-cta-text {
  flex: 1;
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.5;
}

.mini-cta-text strong {
  color: var(--gray-900);
}

.mini-cta .btn-primary {
  font-size: 13px;
  padding: 10px 20px;
  white-space: nowrap;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .mini-cta {
    flex-direction: column;
    text-align: center;
  }
}

/* Newsletter mid-article */
.newsletter-inline {
  margin: 40px 0;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  text-align: center;
}

.newsletter-inline h3 {
  font-size: 18px !important;
  font-weight: 700;
  margin: 0 0 8px !important;
  color: var(--gray-900);
}

.newsletter-inline p {
  font-size: 15px !important;
  color: var(--gray-600);
  margin-bottom: 16px !important;
}

.newsletter-inline .newsletter-form {
  max-width: 400px;
}

.newsletter-inline .newsletter-form input {
  padding: 12px 20px;
  font-size: 14px;
}

.newsletter-inline .newsletter-form button {
  padding: 12px 24px;
  font-size: 14px;
}

/* FAQ Section */
.faq-section {
  margin: 48px 0;
  padding-top: 40px;
  border-top: 1px solid var(--gray-100);
}

.faq-section h2 {
  margin-top: 0 !important;
}

.faq-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-100);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 17px;
  font-weight: 600;
  color: var(--gray-900);
  text-align: left;
  padding: 0;
  gap: 16px;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  fill: var(--gray-400);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding-top: 12px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-600);
}

.faq-item.open .faq-answer {
  display: block;
}

/* Author bio social proof */
.article-author-bio-stats {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.article-author-bio-stat {
  font-size: 12px;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-author-bio-stat svg {
  width: 14px;
  height: 14px;
  fill: var(--gray-400);
}

/* Figcaption for article images */
.article-content figure {
  margin: 32px 0;
}

.article-content figure img {
  margin: 0;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--gray-400);
  text-align: center;
  margin-top: 10px;
  line-height: 1.4;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Video timestamp link */
.video-timestamp {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--gray-400);
  white-space: nowrap;
}

.video-timestamp svg {
  width: 14px;
  height: 14px;
  fill: var(--gray-400);
}

.video-timestamp:hover {
  color: var(--blue);
}

.video-timestamp:hover svg {
  fill: var(--blue);
}

/* Prev/Next article navigation */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--gray-100);
}

.article-nav-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
  text-decoration: none;
}

.article-nav-link:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.article-nav-link--next {
  text-align: right;
}

.article-nav-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
}

.article-nav-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.3;
}

/* Dark mode toggle */
.dark-toggle {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  cursor: pointer;
  padding: 10px;
  border-radius: 50%;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  margin-left: 8px;
}

.dark-toggle:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
  color: var(--gray-900);
}

.dark-toggle svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

body.dark .dark-toggle {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--gray-400);
}

body.dark .dark-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
}

/* Dark mode */
body.dark {
  --white: #1a1a1a;
  --off-white: #1e1e1e;
  --gray-50: #222222;
  --gray-100: #2a2a2a;
  --gray-200: #3a3a3a;
  --gray-400: #888888;
  --gray-600: #aaaaaa;
  --gray-700: #cccccc;
  --gray-900: #f0f0f0;
  --glass-bg: rgba(30, 30, 30, 0.8);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --blue-light: rgba(0, 113, 227, 0.15);
  background: #1a1a1a;
}

body.dark .nav.scrolled {
  background: rgba(26, 26, 26, 0.85);
}

body.dark .content-card,
body.dark .channel-card,
body.dark .formation-card,
body.dark .featured-sidebar-card {
  background: #222222;
}

body.dark .article-header {
  background: #1e1e1e;
}

body.dark .footer {
  background: #111111;
}

body.dark .dark-toggle:hover {
  background: var(--gray-100);
}

body.dark .dark-toggle svg {
  fill: var(--gray-600);
}

body.dark img {
  opacity: 0.92;
}

@media (max-width: 768px) {
  .article-nav {
    grid-template-columns: 1fr;
  }

  .article-nav-link--next {
    text-align: left;
  }
}

/* Share bar */
.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 0;
  margin-top: 48px;
  border-top: 1px solid var(--gray-100);
}

.article-share-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 4px;
}

.article-share-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
}

.article-share-btn:hover {
  background: var(--gray-900);
  border-color: var(--gray-900);
}

.article-share-btn svg {
  width: 16px;
  height: 16px;
  fill: var(--gray-600);
  transition: fill var(--transition);
}

.article-share-btn:hover svg {
  fill: var(--white);
}

/* Article footer: author bio */
.article-author-bio {
  display: flex;
  gap: 24px;
  padding: 32px;
  margin: 48px 0;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  align-items: center;
}

.article-author-bio-avatar {
  width: 72px;
  min-width: 72px;
  height: 72px;
  border-radius: 50%;
  background-size: cover;
  background-position: center center;
  background-color: var(--gray-200);
  flex-shrink: 0;
  align-self: center;
  overflow: hidden;
}

.article-author-bio-avatar img {
  width: 72px !important;
  height: 72px !important;
  min-width: 72px !important;
  min-height: 72px !important;
  max-width: none !important;
  object-fit: cover !important;
  object-position: center center !important;
  border-radius: 50% !important;
  margin: 0 !important;
  padding: 0 !important;
  display: block !important;
}

.article-author-bio-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.article-author-bio-desc {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.5;
  margin-bottom: 0;
}

/* Related articles */
.article-related {
  padding: 80px 0;
  background: var(--gray-50);
}

.article-related .section-header {
  margin-bottom: 40px;
}

.article-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* --- Animations (Intersection Observer) --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.1, 0.25, 1),
              transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .featured-strip-grid {
    grid-template-columns: 1fr;
  }

  .featured-sidebar {
    flex-direction: row;
  }

  .featured-sidebar-card {
    flex: 1;
  }

  .nav-dropdown-menu {
    min-width: 400px;
  }

  .article-layout {
    grid-template-columns: 180px 1fr;
    gap: 32px;
  }

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

@media (max-width: 768px) {
  :root {
    --nav-height: 56px;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-900);
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    min-height: auto;
    padding: 120px 24px 64px;
  }

  .hero h1 {
    font-size: clamp(36px, 10vw, 52px);
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    order: -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .content-grid,
  .blog-grid,
  .content-grid-magazine {
    grid-template-columns: 1fr;
  }

  .featured-sidebar {
    flex-direction: column;
  }

  .nav-dropdown-menu {
    position: fixed;
    top: var(--nav-height);
    left: 8px;
    right: 8px;
    min-width: 0;
    transform: none;
    grid-template-columns: 1fr;
  }

  .nav-dropdown.open .nav-dropdown-menu {
    transform: none;
  }

  .formations-grid {
    grid-template-columns: 1fr;
  }

  .channels-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .channel-card {
    padding: 24px 16px;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .blog-featured {
    grid-template-columns: 1fr;
  }

  .article-header {
    padding: 100px 0 32px;
  }

  .article-title {
    font-size: clamp(26px, 7vw, 36px);
  }

  .article-subtitle {
    font-size: 16px;
  }

  .article-layout {
    grid-template-columns: 1fr;
    padding: 24px 20px 80px;
  }

  .article-toc {
    display: none;
  }

  .article-toc-mobile {
    display: block;
  }

  .article-content h2 {
    font-size: 24px;
    margin: 36px 0 16px;
  }

  .article-content h3 {
    font-size: 20px;
    margin: 28px 0 12px;
  }

  .article-content p,
  .article-content li {
    font-size: 17px;
    line-height: 1.75;
  }

  .article-content blockquote {
    padding: 16px 20px;
    font-size: 17px;
  }

  .callout {
    padding: 20px;
    margin: 24px 0;
  }

  .video-embed {
    margin: 28px -20px;
    border-radius: 0;
    box-shadow: none;
  }

  .article-author-bio {
    flex-direction: column;
    text-align: center;
    padding: 24px;
  }

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

  .article-related-grid {
    grid-template-columns: 1fr;
  }

  .back-to-top {
    bottom: 72px;
    right: 16px;
  }

  .section {
    padding: 80px 0;
  }

  .section-header {
    margin-bottom: 48px;
  }

  .formation-card {
    padding: 28px;
  }
}

@media (max-width: 768px) {
  .dark-toggle {
    padding: 8px;
    margin-left: 0;
    position: absolute;
    top: 14px;
    right: 56px;
  }

  .breadcrumb {
    font-size: 12px;
    gap: 6px;
  }

  .article-nav {
    grid-template-columns: 1fr;
  }

  .article-nav-link--next {
    text-align: left;
  }

  .article-vote {
    flex-direction: column;
    gap: 12px;
  }

  .article-vote-label {
    font-size: 14px;
  }

  .article-author-bio-stats {
    justify-content: center;
  }

  .faq-question {
    font-size: 16px;
  }

  .faq-answer {
    font-size: 15px;
  }

  .newsletter-inline {
    padding: 24px 20px;
    margin: 28px -20px;
    border-radius: 0;
  }

  .newsletter-inline .newsletter-form {
    flex-direction: column;
  }

  .mini-cta {
    flex-direction: column;
    text-align: center;
    margin: 28px -20px;
    border-radius: 0;
  }

  .promo-card {
    padding: 24px;
    margin: 28px -20px;
    border-radius: 0;
  }

  .promo-card-title {
    font-size: 19px;
  }

  .promo-card-features {
    flex-direction: column;
    gap: 8px;
  }

  .sticky-promo {
    bottom: 72px;
    left: 8px !important;
    right: 8px;
    width: auto !important;
    margin-left: 0 !important;
    border-radius: var(--radius-md);
    padding: 12px 16px;
    gap: 12px;
  }

  .sticky-promo-title {
    font-size: 13px;
  }

  .sticky-promo .btn-primary {
    font-size: 12px;
    padding: 8px 16px;
  }

  .toast {
    bottom: 80px;
    font-size: 13px;
    padding: 10px 20px;
  }

  .blog-search {
    max-width: 100%;
    margin-bottom: 24px;
  }

  .blog-search input {
    font-size: 16px;
  }

  .blog-hero {
    padding: 100px 0 40px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .channels-grid {
    grid-template-columns: 1fr;
  }

  .article-meta {
    font-size: 12px;
    gap: 8px;
  }

  .article-author {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .hero-badge {
    font-size: 12px;
    padding: 6px 14px;
  }

  .sticky-promo {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .sticky-promo .btn-primary {
    width: 100%;
    justify-content: center;
  }

  .sticky-promo-close {
    position: absolute;
    top: 8px;
    right: 8px;
  }
}

/* --- Toast notification --- */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--gray-900);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 14px;
  font-weight: 500;
  z-index: 10000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  pointer-events: none;
  box-shadow: var(--shadow-lg);
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

body.dark .toast {
  background: var(--white);
  color: var(--gray-900);
}

/* --- Article helpfulness vote --- */
.article-vote {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px 0;
  margin: 32px 0;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}

.article-vote-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-600);
}

.article-vote-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 980px;
  border: 1px solid var(--gray-200);
  background: var(--white);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  color: var(--gray-600);
  transition: all var(--transition);
}

.article-vote-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-light);
}

.article-vote-btn.voted {
  border-color: var(--blue);
  color: var(--white);
  background: var(--blue);
  pointer-events: none;
}

.article-vote-btn svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

/* --- TOC reading time remaining --- */
.toc-time-remaining {
  font-size: 11px;
  color: var(--gray-400);
  padding: 12px 12px 0;
  border-top: 1px solid var(--gray-100);
  margin-top: 12px;
}

/* --- Animated counter --- */
.counter-animated {
  display: inline-block;
}

/* --- Blog search --- */
.blog-search {
  max-width: 400px;
  margin: 0 auto 32px;
  position: relative;
}

.blog-search input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  border: 1px solid var(--gray-200);
  border-radius: 980px;
  font-size: 15px;
  font-family: inherit;
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}

.blog-search input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-light);
}

.blog-search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--gray-400);
  stroke-width: 2;
  pointer-events: none;
}

/* --- Print --- */
@media print {
  .nav, .newsletter, .footer, .btn, .nav-toggle {
    display: none !important;
  }

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

  .hero {
    min-height: auto;
    padding: 0;
  }

  .section {
    padding: 24px 0;
  }
}