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

:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #f59e0b;
  --accent-color: #ec4899;
  --text-color: #1e293b;
  --text-light: #64748b;
  --bg-color: #ffffff;
  --bg-light: #f8fafc;
  --bg-dark: #0f172a;
  --border-color: #e2e8f0;
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

html {
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2.5rem;
  margin-top: 3rem;
  margin-bottom: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-lead {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 2rem;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* Header */
.site-header {
  background: white;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
}

.brand:hover {
  color: var(--primary-color);
}

.brand-mark {
  font-size: 1.75rem;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  color: var(--text-color);
  font-weight: 500;
}

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

.site-nav a[aria-current="page"] {
  color: var(--primary-color);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-color);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-weight: 600;
  text-align: center;
  border-radius: 0.75rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
  color: white;
}

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

.btn-secondary:hover {
  background: #db2777;
  color: white;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  color: white;
  transform: translateY(-2px);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  padding: 7rem 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.3; }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 4rem;
  background: linear-gradient(135deg, #60a5fa 0%, #c084fc 50%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  animation: gradient 3s ease infinite;
  background-size: 200% 200%;
}

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero-text p {
  font-size: 1.375rem;
  color: #cbd5e1;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-xl);
  transform: perspective(1000px) rotateY(-15deg);
  transition: transform 0.6s ease;
}

.hero-image:hover img {
  transform: perspective(1000px) rotateY(0deg);
}

/* Features */
.features {
  background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-color) 100%);
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature {
  background: white;
  padding: 2.5rem;
  border-radius: 1.5rem;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05), var(--shadow);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.feature:hover {
  transform: translateY(-8px);
  box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.1), var(--shadow-xl);
}

.feature:hover::before {
  transform: translateX(0);
}

.feature-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

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

.feature:nth-child(2) .feature-icon { animation-delay: 0.5s; }
.feature:nth-child(3) .feature-icon { animation-delay: 1s; }
.feature:nth-child(4) .feature-icon { animation-delay: 1.5s; }
.feature:nth-child(5) .feature-icon { animation-delay: 2s; }
.feature:nth-child(6) .feature-icon { animation-delay: 2.5s; }

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

/* Footer */
.site-footer {
  background: var(--text-color);
  color: white;
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

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

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.footer-nav a {
  color: white;
  opacity: 0.8;
}

.footer-nav a:hover {
  opacity: 1;
  color: var(--primary-light);
}

.copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

/* Back to Home Button */
.back-to-home {
  margin-top: 3rem;
  text-align: center;
}

/* Lists */
ul, ol {
  margin-bottom: 1rem;
  padding-left: 2rem;
}

li {
  margin-bottom: 0.5rem;
}

/* How It Works Section */
.how-it-works {
  background: linear-gradient(180deg, var(--bg-color) 0%, var(--bg-light) 100%);
}

.steps-container {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}

.step-card {
  display: flex;
  gap: 2rem;
  align-items: center;
  padding: 2rem;
  background: white;
  border-radius: 1rem;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.step-card:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: var(--gradient-1);
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.step-content h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

/* Feature Tags */
.feature-tag {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.25rem 0.75rem;
  background: var(--gradient-1);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}


/* Mobile Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow);
  }
  
  .site-nav.active {
    display: flex;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
}