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

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #6b7280;
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-border: #e5e7eb;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 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-border);
  z-index: 100;
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--color-primary);
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: 0.5rem;
  transition: background 0.2s;
}

.nav-cta:hover {
  background: var(--color-primary-hover);
}

/* Main content */
main {
  flex: 1;
  padding-top: 80px;
}

/* Hero section */
.hero {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
}

.hero-content {
  max-width: 800px;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: 1rem 2.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1.125rem;
  text-decoration: none;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.hero-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

/* Content pages */
.content {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.content h1 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.content p {
  margin-bottom: 1.5rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    padding: 1rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .hero {
    padding: 2rem 1rem;
  }
}