:root {
  /* Colors */
  --primary: #0D1B3E;
  --primary-light: #1a3a6e;
  --accent: #00D4FF;
  --accent-secondary: #0066FF;
  --accent-gradient: linear-gradient(135deg, #00D4FF 0%, #0066FF 100%);
  --text: #1a1a2e;
  --text-light: #6B7B8F;
  --text-inverse: #ffffff;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #0D1B3E;
  --border: #e2e8f0;
  --success: #10b981;
  --warning: #f59e0b;

  /* Typography */
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1200px;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(13, 27, 62, 0.05);
  --shadow-md: 0 4px 12px rgba(13, 27, 62, 0.1);
  --shadow-lg: 0 12px 40px rgba(13, 27, 62, 0.15);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);

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

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

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

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
}

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

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

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

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

@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-5xl);
  }

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

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

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

.text-light {
  color: var(--text-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  height: 40px;
  width: auto;
}

.nav {
  display: none;
}

@media (min-width: 768px) {
  .nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
  }
}

.nav-link {
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--accent-secondary);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  transition: all var(--transition-fast);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Menu */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background: var(--bg);
  padding: var(--space-3xl) var(--space-xl);
  box-shadow: var(--shadow-lg);
  transition: right var(--transition-slow);
  z-index: 1001;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  font-size: var(--font-size-2xl);
  color: var(--text-light);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.mobile-nav-link {
  font-size: var(--font-size-lg);
  font-weight: 500;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 27, 62, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1000;
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Hero Section */
.hero {
  padding: calc(var(--space-4xl) + 60px) 0 var(--space-4xl);
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(-30px, 30px);
  }
}

.hero-content {
  display: grid;
  gap: var(--space-3xl);
  align-items: center;
}

@media (min-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-text {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  color: var(--accent-secondary);
  font-weight: 500;
  margin-bottom: var(--space-lg);
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  margin-bottom: var(--space-xl);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-globe {
  width: 100%;
  max-width: 450px;
  aspect-ratio: 1;
  position: relative;
}

.globe-svg {
  width: 100%;
  height: 100%;
  animation: rotate-globe 60s linear infinite;
}

@keyframes rotate-globe {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.domain-orbit {
  position: absolute;
  inset: 0;
  animation: rotate-orbit 30s linear infinite;
}

.domain-orbit:nth-child(2) {
  animation-duration: 25s;
  animation-direction: reverse;
}

.domain-tag {
  position: absolute;
  padding: var(--space-xs) var(--space-md);
  background: var(--bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--primary);
  white-space: nowrap;
}

@keyframes rotate-orbit {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* Stats Section */
.stats {
  padding: var(--space-3xl) 0;
  background: var(--bg-dark);
  color: var(--text-inverse);
}

.stats-grid {
  display: grid;
  gap: var(--space-xl);
  text-align: center;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  padding: var(--space-lg);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

/* Section Base */
.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.section-header p {
  margin-top: var(--space-md);
  color: var(--text-light);
  font-size: var(--font-size-lg);
}

/* TLD Cards */
.tld-grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 576px) {
  .tld-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .tld-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.tld-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.tld-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.tld-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.tld-card:hover::before {
  transform: scaleX(1);
}

.tld-extension {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.tld-name {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  margin-bottom: var(--space-md);
}

.tld-count {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-alt);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--accent-secondary);
}

/* World Map Section */
.map-section {
  background: var(--bg-alt);
}

.world-map-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.world-map {
  width: 100%;
  height: auto;
}

.map-region {
  fill: var(--primary-light);
  stroke: var(--bg);
  stroke-width: 0.5;
  transition: all var(--transition-base);
  cursor: pointer;
}

.map-region:hover {
  fill: var(--accent);
}

.map-tooltip {
  position: absolute;
  padding: var(--space-sm) var(--space-md);
  background: var(--primary);
  color: var(--text-inverse);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  pointer-events: none;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 10;
}

.map-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}

/* How It Works */
.how-it-works {
  background: var(--bg);
}

.steps-container {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .steps-container {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-card {
  position: relative;
  padding: var(--space-xl);
  background: var(--bg-alt);
  border-radius: var(--border-radius-lg);
  text-align: center;
}

.step-number {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-gradient);
  color: var(--text-inverse);
  font-weight: 700;
  font-size: var(--font-size-lg);
  border-radius: 50%;
}

.step-card h3 {
  margin-bottom: var(--space-md);
}

.step-card p {
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

.step-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
}

/* Categories Section */
.categories-grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

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

.category-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--border-radius);
}

.category-card h3 {
  margin-bottom: var(--space-md);
}

.category-card p {
  color: var(--text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-lg);
}

.category-examples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.category-examples span {
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-alt);
  border-radius: var(--border-radius);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--accent-secondary);
}

/* FAQ Section */
.faq-section {
  background: var(--bg-alt);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: var(--font-size-base);
  text-align: left;
  color: var(--primary);
  transition: all var(--transition-fast);
}

.faq-question:hover {
  color: var(--accent-secondary);
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-answer-inner {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--text-light);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* CTA Section */
.cta-section {
  padding: var(--space-4xl) 0;
  background: var(--bg-dark);
  color: var(--text-inverse);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before,
.cta-section::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
}

.cta-section::before {
  top: -200px;
  left: -100px;
}

.cta-section::after {
  bottom: -200px;
  right: -100px;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
}

.cta-content h2 {
  color: var(--text-inverse);
  margin-bottom: var(--space-lg);
}

.cta-content p {
  opacity: 0.9;
  margin-bottom: var(--space-xl);
}

/* Footer */
.footer {
  background: var(--primary);
  color: var(--text-inverse);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr repeat(3, 1fr);
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  height: 36px;
  margin-bottom: var(--space-lg);
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  line-height: 1.7;
}

.footer-column h4 {
  color: var(--text-inverse);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}

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

.footer-link {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer-link:hover {
  opacity: 1;
}

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

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  opacity: 0.7;
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.footer-legal a:hover {
  opacity: 1;
}

/* Animations */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

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

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-md);
  background: var(--accent);
  color: var(--text-inverse);
  border-radius: var(--border-radius);
  z-index: 9999;
  transition: top var(--transition-fast);
}

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

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

/* Content with Sidebar */
.content-with-sidebar {
  display: grid;
  gap: var(--space-3xl);
  grid-template-columns: 1fr;
}

@media (min-width: 992px) {
  .content-with-sidebar {
    grid-template-columns: 2fr 1fr;
  }
}