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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f9fafb;
}

a {
  color: #2563eb;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #1d4ed8;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: 0.5em;
  line-height: 1.2;
  font-weight: 700;
  color: #111827;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Navigation */
header {
  background-color: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

.nav-link {
  display: inline-block;
  padding: 0.75rem 1rem;
  color: #4b5563;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: #2563eb;
  border-bottom: 2px solid #2563eb;
}

.mobile-menu {
  display: none;
}

#menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

/* Main Content */
main {
  padding: 2rem 0;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  color: white;
  padding: 4rem 1rem;
  border-radius: 0.5rem;
  margin-bottom: 3rem;
  text-align: center;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.2);
}

.hero h1 {
  color: white;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero .text-blue-200 {
  color: #bfdbfe;
}

.hero p {
  opacity: 0.9;
  max-width: 42rem;
  margin: 0 auto;
  font-size: 1.25rem;
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

/* Feature Cards */
.feature-card {
  background: white;
  border-radius: 0.5rem;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: #6b7280;
  margin-bottom: 1.5rem;
}

/* Button styles */
.inline-block {
  display: inline-block;
}

.bg-blue-500 { background-color: #3b82f6; }
.bg-blue-600 { background-color: #2563eb; }
.bg-blue-700 { background-color: #1d4ed8; }
.bg-indigo-500 { background-color: #6366f1; }
.bg-indigo-600 { background-color: #4f46e5; }
.bg-purple-500 { background-color: #a855f7; }
.bg-purple-600 { background-color: #9333ea; }
.bg-teal-500 { background-color: #14b8a6; }
.bg-teal-600 { background-color: #0d9488; }
.bg-gray-800 { background-color: #1f2937; }
.bg-gray-900 { background-color: #111827; }

.hover\:bg-blue-600:hover { background-color: #2563eb; }
.hover\:bg-blue-700:hover { background-color: #1d4ed8; }
.hover\:bg-indigo-600:hover { background-color: #4f46e5; }
.hover\:bg-purple-600:hover { background-color: #9333ea; }
.hover\:bg-teal-600:hover { background-color: #0d9488; }
.hover\:bg-gray-900:hover { background-color: #111827; }

.text-white { color: white; }
.text-blue-500 { color: #3b82f6; }
.text-indigo-500 { color: #6366f1; }
.text-purple-500 { color: #a855f7; }
.text-teal-500 { color: #14b8a6; }
.text-gray-600 { color: #4b5563; }
.text-gray-700 { color: #374151; }
.text-green-400 { color: #4ade80; }
.text-yellow-700 { color: #a16207; }

.rounded, .rounded-lg { border-radius: 0.5rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mr-2 { margin-right: 0.5rem; }

.shadow-md { box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.shadow-lg { box-shadow: 0 10px 15px rgba(0,0,0,0.1); }
.shadow-xl { box-shadow: 0 20px 25px rgba(0,0,0,0.1); }

.hover\:shadow-lg:hover { box-shadow: 0 10px 15px rgba(0,0,0,0.1); }

.transition-colors { transition-property: color, background-color, border-color; }
.transition-shadow { transition-property: box-shadow; }
.transition { transition-property: all; }
.duration-300 { transition-duration: 300ms; }

.font-medium { font-weight: 500; }
.font-bold { font-weight: 700; }

.text-center { text-align: center; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }

/* CTA Section */
.cta {
  background-color: #f3f4f6;
  padding: 2rem;
  border-radius: 0.5rem;
  margin-bottom: 3rem;
  text-align: center;
}

.cta h2 {
  font-size: 1.875rem;
  margin-bottom: 1rem;
}

.code-block {
  background-color: #1e293b;
  border-radius: 0.5rem;
  padding: 1rem;
  margin: 1rem 0;
  text-align: left;
}

.code-block pre {
  margin: 0;
  color: #4ade80;
  font-family: monospace;
  white-space: pre-wrap;
}

.code-block h4 {
  color: white;
  margin-bottom: 0.5rem;
}

.warning {
  background-color: #fff7ed;
  border-left: 4px solid #f97316;
  padding: 1rem;
  margin: 1rem 0;
  color: #7c2d12;
}

.warning-icon {
  font-size: 1.5rem;
  margin-right: 0.5rem;
}

/* Footer */
footer {
  background-color: #111827;
  color: white;
  padding: 3rem 1rem;
}

footer h3 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

footer p {
  color: #9ca3af;
}

footer ul {
  list-style: none;
}

footer li {
  margin-bottom: 0.5rem;
}

footer a {
  color: #9ca3af;
  transition: color 0.2s;
}

footer a:hover {
  color: white;
}

.border-t {
  border-top-width: 1px;
  border-top-style: solid;
}

.border-gray-800 {
  border-color: #1f2937;
}

.mt-8 {
  margin-top: 2rem;
}

.pt-8 {
  padding-top: 2rem;
}

/* Responsive */
@media (min-width: 768px) {
  .md\:flex {
    display: flex;
  }
  
  .md\:hidden {
    display: none;
  }
  
  .md\:flex-row {
    flex-direction: row;
  }
  
  .md\:mb-0 {
    margin-bottom: 0;
  }
  
  .md\:text-5xl {
    font-size: 3rem;
  }
  
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .space-x-4 > * + * {
    margin-left: 1rem;
  }
  
  .space-y-2 > * + * {
    margin-top: 0.5rem;
  }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .hidden {
    display: none;
  }
  
  #menu-toggle {
    display: block;
  }
  
  .mobile-menu {
    display: block;
    border-top: 1px solid #e5e7eb;
  }
  
  .mobile-menu.hidden {
    display: none;
  }
  
  .mobile-menu a {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f3f4f6;
  }
  
  .flex-col {
    flex-direction: column;
  }
}