/* ===== DIGITAL UNIVERSE ACADEMY - Design System ===== */

/* --- Antigravity Background --- */
#ag-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

body {
  position: relative;
}

body > *:not(#ag-canvas) {
  position: relative;
  z-index: 1;
}

/* --- CSS Variables --- */
:root {
  --primary: #0EA5E9;
  --primary-light: #38BDF8;
  --primary-dark: #0284C7;
  --accent: #06B6D4;
  --accent-light: #22D3EE;
  --accent-dark: #0891B2;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;

  --bg-dark: #0B0F1A;
  --bg-card: #111827;
  --bg-card-hover: #1F2937;
  --bg-surface: #1E293B;
  --bg-glass: rgba(17, 24, 39, 0.8);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --border: #1E293B;
  --border-light: #334155;

  --gradient-primary: linear-gradient(135deg, #0EA5E9 0%, #06B6D4 100%);
  --gradient-hero: linear-gradient(135deg, #0B0F1A 0%, #0c1a2e 50%, #0B0F1A 100%);
  --gradient-card: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;

  --max-width: 1280px;
  --nav-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

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

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(11, 15, 26, 0.95);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo .logo-icon img {
  width: 100%;
  height: 100%;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 0.625rem 1.5rem !important;
  background: var(--gradient-primary) !important;
  color: white !important;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* Mobile menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background: var(--bg-surface);
  border-color: var(--primary-light);
  color: var(--text-primary);
}

.btn-accent {
  background: var(--accent);
  color: var(--bg-dark);
  font-weight: 700;
}

.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  color: var(--bg-dark);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.card-gradient {
  background: var(--gradient-card);
  border-color: rgba(14, 165, 233, 0.2);
}

.card-gradient:hover {
  border-color: rgba(14, 165, 233, 0.4);
  box-shadow: var(--shadow-glow);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--nav-height);
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(14, 165, 233, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(2%, -2%) rotate(1deg); }
  66% { transform: translate(-1%, 1%) rotate(-1deg); }
}

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

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 3rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

.hero-stat h3 {
  font-size: 2rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Floating orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  animation: float 6s ease-in-out infinite;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: 10%;
  right: -10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: var(--accent);
  bottom: 10%;
  right: 20%;
  animation-delay: -3s;
}

.orb-3 {
  width: 200px;
  height: 200px;
  background: var(--primary-light);
  top: 40%;
  right: 30%;
  animation-delay: -1.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

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

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

/* --- Course Cards --- */
.course-card {
  position: relative;
  overflow: hidden;
}

.course-card .card-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 9999px;
  margin-bottom: 1rem;
}

.badge-beginner {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.badge-intermediate {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.badge-developer {
  background: rgba(14, 165, 233, 0.15);
  color: var(--primary-light);
}

.badge-free {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent);
}

.course-card .card-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.course-card h4 {
  margin-bottom: 0.75rem;
}

.course-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.course-meta span {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

/* --- Features Section --- */
.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.feature-card h4 {
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* --- Stats Bar --- */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* --- Testimonials --- */
.testimonial-card {
  padding: 2.5rem;
}

.testimonial-card .stars {
  color: var(--warning);
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.testimonial-card blockquote {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
}

.testimonial-info h5 {
  font-weight: 600;
  font-size: 0.9375rem;
}

.testimonial-info p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* --- Blog Cards --- */
.blog-card {
  overflow: hidden;
  padding: 0;
}

.blog-card-image {
  width: 100%;
  height: 220px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.blog-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, var(--bg-card));
}

.blog-card-content {
  padding: 1.5rem 2rem 2rem;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.blog-card-tag {
  padding: 0.125rem 0.5rem;
  background: rgba(14, 165, 233, 0.15);
  color: var(--primary-light);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.blog-card h4 {
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.blog-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.blog-card .read-more {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

/* --- Case Study --- */
.case-study-hero {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1040 50%, var(--bg-dark) 100%);
  padding: 10rem 0 6rem;
  position: relative;
  overflow: hidden;
}

.revenue-highlight {
  display: inline-block;
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  background: linear-gradient(135deg, #10B981, #06B6D4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.metric-card {
  text-align: center;
  padding: 2rem;
}

.metric-card .metric-value {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.metric-card .metric-label {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.timeline {
  position: relative;
  padding-left: 3rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -3rem;
  top: 0.375rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--bg-dark);
  transform: translateX(-5px);
}

.timeline-item h4 {
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.timeline-item h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.timeline-item p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* --- CTA Section --- */
.cta-section {
  background: var(--gradient-primary);
  text-align: center;
  padding: 5rem 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.cta-section h2,
.cta-section p {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn {
  position: relative;
  z-index: 1;
}

.cta-section .btn-accent {
  background: white;
  color: var(--primary-dark);
}

.cta-section .btn-accent:hover {
  background: var(--text-primary);
}

/* --- Founder Section --- */
.founder-section {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 3rem;
  align-items: center;
}

.founder-photo {
  width: 300px;
  height: 360px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid rgba(14, 165, 233, 0.3);
  box-shadow: 0 0 40px rgba(14, 165, 233, 0.15);
}

.founder-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.founder-info h3 {
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
}

.founder-title {
  color: var(--primary-light);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.founder-info p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.founder-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (max-width: 768px) {
  .founder-section {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .founder-photo {
    width: 220px;
    height: 264px;
    margin: 0 auto;
  }
  .founder-links {
    justify-content: center;
    flex-wrap: wrap;
  }
}

/* --- Footer --- */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.footer-col ul li {
  margin-bottom: 0.75rem;
}

.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.footer-col ul li a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* --- Page Header --- */
.page-header {
  padding: 10rem 0 4rem;
  text-align: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(14, 165, 233, 0.2) 0%, transparent 60%);
}

.page-header h1,
.page-header p {
  position: relative;
  z-index: 1;
}

.page-header p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 1rem auto 0;
}

/* --- Powered By Banner --- */
.powered-by {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.powered-by a {
  color: var(--accent);
  font-weight: 600;
}

/* --- Benefits Section --- */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.benefit-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem;
}

.benefit-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.benefit-item h4 {
  margin-bottom: 0.375rem;
  font-size: 1.0625rem;
}

.benefit-item p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* --- Service Breakdown (Case Study) --- */
.service-card {
  padding: 2rem;
  text-align: center;
}

.service-card .service-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.25rem;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.service-card .service-revenue {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--success);
  margin-bottom: 0.25rem;
}

.service-card h4 {
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* --- Learning Paths (Courses) --- */
.path-tabs {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.path-tab {
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 9999px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: var(--transition);
}

.path-tab:hover,
.path-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* --- Newsletter --- */
.newsletter {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 3rem;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.newsletter h3 {
  margin-bottom: 0.75rem;
}

.newsletter p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.newsletter-form {
  display: flex;
  gap: 0.75rem;
  max-width: 440px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9375rem;
  outline: none;
  transition: var(--transition);
}

.newsletter-form input:focus {
  border-color: var(--primary);
}

.newsletter-form input::placeholder {
  color: var(--text-muted);
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

/* --- Counter Animation --- */
.counter {
  display: inline-block;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 2rem; }
}

@media (max-width: 768px) {
  section { padding: 4rem 0; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 2rem;
    border-bottom: 1px solid var(--border);
    gap: 1rem;
  }

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

  .menu-toggle {
    display: flex;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

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

  .btn-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-header {
    padding: 8rem 0 3rem;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
}