/* style.css */
:root {
  --bg-primary: #0B0F19;
  --text-primary: #E5E7EB;
  --text-secondary: #9CA3AF;
  --accent: #3B82F6;
  --border: #1F2937;
  --surface: #111827;
  --gradient: linear-gradient(135deg, #0B0F19 0%, #1F2937 100%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
}

/* Typography */
h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.875rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.text-large {
  font-size: 1.25rem;
}

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

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
header {
  background: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.cta-nav {
  background: var(--accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.cta-nav:hover {
  background: #2563EB;
  transform: translateY(-1px);
}

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

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

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

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

.hero .tagline {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-weight: 400;
}

.hero-image {
  max-width: 800px;
  width: 100%;
  height: auto;
  margin: 3rem auto 0;
  border-radius: 1rem;
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.25rem;
  margin-bottom: 4rem;
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 3rem;
  margin: 3rem 0;
  align-items: center;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: var(--accent);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: white;
}

.card h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.card p {
  color: var(--text-secondary);
}

/* Steps */
.step {
  position: relative;
  padding-left: 4rem;
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 3rem;
  height: 3rem;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
}

.step h4 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.step p {
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: #2563EB;
  transform: translateY(-2px);
}

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

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

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
}

.feature-image {
  width: 100%;
  max-width: 600px;
  margin: 2rem auto;
  display: block;
}

/* Footer */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
}

.footer-content {
  margin-bottom: 2rem;
}

.footer-content h3 {
  margin-bottom: 1rem;
}

.footer-content p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container,
  .container-wide {
    padding: 0 1rem;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero {
    padding: 3rem 0;
  }

  .hero .tagline {
    font-size: 1.25rem;
  }

  .section {
    padding: 2rem 0;
  }

  .grid-3,
  .grid-4,
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .nav-links {
    display: none;
  }

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

  .card {
    padding: 1.5rem;
  }

  .step {
    padding-left: 3rem;
  }

  .step-number {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

  .hero .tagline {
    font-size: 1.125rem;
  }

  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
  }

  .btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
  }
}