/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #2563EB;
  --color-primary-hover: #1D4ED8;
  --color-secondary: #10B981;
  --color-accent: #F97316;
  --color-accent-hover: #EA580C;
  
  /* Success, Warning, Error */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  
  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Line Heights */
  --line-height-body: 1.5;
  --line-height-heading: 1.2;
  
  /* Spacing System (8px base) */
  --space-1: 0.5rem;   /* 8px */
  --space-2: 1rem;     /* 16px */
  --space-3: 1.5rem;   /* 24px */
  --space-4: 2rem;     /* 32px */
  --space-5: 2.5rem;   /* 40px */
  --space-6: 3rem;     /* 48px */
  --space-8: 4rem;     /* 64px */
  --space-12: 6rem;    /* 96px */
  --space-16: 8rem;    /* 128px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-body);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-heading);
  color: var(--color-gray-900);
  font-weight: var(--font-weight-bold);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
}

p {
  font-size: 1.125rem;
  color: var(--color-gray-600);
}

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

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-2);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
}

.nav__logo h2 {
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
}

.nav__menu {
  display: flex;
  list-style: none;
  gap: var(--space-4);
}

.nav__link {
  font-weight: var(--font-weight-medium);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  background-color: var(--color-gray-100);
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .nav__menu {
    gap: var(--space-2);
  }
  
  .nav__link {
    font-size: 0.875rem;
    padding: var(--space-1);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

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

.btn--secondary {
  background-color: var(--color-white);
  color: var(--color-gray-700);
  border: 2px solid var(--color-gray-300);
}

.btn--secondary:hover {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
  transform: translateY(-2px);
  color: var(--color-gray-700);
}

.btn--large {
  padding: var(--space-4) var(--space-6);
  font-size: 1.125rem;
}

/* Hero Section */
.hero {
  padding: var(--space-16) 0 var(--space-12);
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
  margin-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  opacity: 0.05;
  transform: skew(-15deg) translateX(50%);
}

.hero__content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

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

.hero__domain {
  display: block;
  color: var(--color-primary);
  font-size: clamp(3rem, 6vw, 5rem);
  margin-bottom: var(--space-2);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.hero__subtitle {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--color-gray-700);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 1.2rem;
}

.hero__description {
  font-size: 1.25rem;
  margin-bottom: var(--space-6);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__cta {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
  margin-top: var(--space-8);
  display: flex;
  justify-content: center;
}

.hero__badge {
  background: linear-gradient(135deg, var(--color-accent), var(--color-warning));
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-xl);
  font-weight: var(--font-weight-bold);
  box-shadow: var(--shadow-lg);
  transform: rotate(-3deg);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: rotate(-3deg) translateY(0px); }
  50% { transform: rotate(-3deg) translateY(-10px); }
}

/* Section Styles */
section {
  padding: var(--space-12) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  margin-bottom: var(--space-3);
}

.section__description {
  font-size: 1.125rem;
  color: var(--color-gray-600);
}

/* Market Section */
.market {
  background-color: var(--color-gray-50);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
}

.stat__card {
  background: var(--color-white);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.stat__icon {
  font-size: 3rem;
  margin-bottom: var(--space-3);
}

.stat__value {
  font-size: 2.5rem;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.stat__label {
  font-size: 1rem;
  color: var(--color-gray-600);
}

/* Benefits Section */
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}

.benefit__card {
  background: var(--color-white);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-normal);
}

.benefit__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.benefit__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-3);
}

.benefit__title {
  margin-bottom: var(--space-3);
  color: var(--color-gray-900);
}

.benefit__description {
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* Testimonials */
.testimonials {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
}

.testimonials .section__title,
.testimonials .section__description {
  color: var(--color-white);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-4);
}

.testimonial__card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform var(--transition-normal);
}

.testimonial__card:hover {
  transform: translateY(-4px);
}

.testimonial__quote {
  font-size: 1.125rem;
  font-style: italic;
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.testimonial__author {
  font-weight: var(--font-weight-semibold);
  opacity: 0.9;
}

/* CTA Section */
.cta {
  background: var(--color-gray-50);
  text-align: center;
}

.cta__content {
  max-width: 600px;
  margin: 0 auto;
}

.cta__title {
  margin-bottom: var(--space-3);
}

.cta__description {
  font-size: 1.125rem;
  margin-bottom: var(--space-6);
}

.cta__features {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.cta__feature {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: var(--font-weight-medium);
}

.cta__check {
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
  font-size: 1.25rem;
}

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

.cta__note {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-top: var(--space-2);
}

/* Footer */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-8) 0 var(--space-4);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.footer__brand h3 {
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.footer__links h4,
.footer__contact h4 {
  color: var(--color-white);
  margin-bottom: var(--space-3);
  font-size: 1rem;
}

.footer__links ul {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-1);
}

.footer__links a {
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--space-4);
  text-align: center;
  color: var(--color-gray-400);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero {
    padding: var(--space-12) 0 var(--space-8);
  }
  
  .hero__cta {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .stats__grid {
    grid-template-columns: 1fr;
  }
  
  .benefits__grid {
    grid-template-columns: 1fr;
  }
  
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
  
  .cta__features {
    flex-direction: column;
    align-items: center;
  }
  
  section {
    padding: var(--space-8) 0;
  }
}

@media (max-width: 480px) {
  .nav__menu {
    display: none;
  }
  
  .hero {
    margin-top: 70px;
  }
  
  .container {
    padding: 0 var(--space-2);
  }
  
  .hero__description {
    font-size: 1rem;
    line-height: 1.7;
    word-break: break-word;
    hyphens: auto;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
  
  .hero__title {
    font-size: 2.2rem;
    line-height: 1.1;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
  
  .hero__domain {
    font-size: 2.2rem;
    line-height: 1.1;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    word-break: break-word;
    white-space: normal;
  }
  
  .hero__subtitle {
    font-size: 1.3rem;
    line-height: 1.2;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    word-break: break-word;
    white-space: normal;
    margin-bottom: 1.2rem;
  }
}