/* CSS Variables for Design System */
:root {
  --background: #ffffff;
  --foreground: #0f172a;
  --card: #ffffff;
  --card-foreground: #0f172a;
  --popover: #ffffff;
  --popover-foreground: #0f172a;
  --primary: #3b82f6;
  --primary-foreground: #ffffff;
  --secondary: #f8fafc;
  --secondary-foreground: #64748b;
  --muted: #f8fafc;
  --muted-foreground: #64748b;
  --accent: #3b82f6;
  --accent-foreground: #ffffff;
  --destructive: #ef4444;
  --destructive-foreground: #fef2f2;
  --border: #e2e8f0;
  --input: #e2e8f0;
  --ring: #3b82f6;
  --radius: 0.75rem;
}

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

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

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

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

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--muted-foreground);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none; }
.block { display: block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }

.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }

.space-x-2 > * + * { margin-left: 0.5rem; }
.space-x-4 > * + * { margin-left: 1rem; }
.space-x-6 > * + * { margin-left: 1.5rem; }
.space-x-8 > * + * { margin-left: 2rem; }

.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.space-y-8 > * + * { margin-top: 2rem; }

.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }

.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }

.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }

.pt-20 { padding-top: 5rem; }
.pt-32 { padding-top: 8rem; }
.pb-20 { padding-bottom: 5rem; }

.w-full { width: 100%; }
.w-auto { width: auto; }
.max-w-2xl { max-width: 42rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-6xl { max-width: 72rem; }

.mx-auto { margin-left: auto; margin-right: auto; }

.rounded { border-radius: 0.25rem; }
.rounded-md { border-radius: 0.375rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }

.border { border: 1px solid var(--border); }
.border-0 { border: none; }
.border-b { border-bottom: 1px solid var(--border); }
.border-t { border-top: 1px solid var(--border); }

.shadow-sm { box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -2px rgb(0 0 0 / 0.05); }

/* Text Gradient */
.text-gradient {
  background: linear-gradient(to right, var(--primary), #1d4ed8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Animations */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scale-in {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.animate-fade-in {
  animation: fade-in 0.6s ease-out;
}

.hover-scale {
  transition: transform 0.2s ease;
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* Header Styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 4rem;
}

.header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--foreground);
}

.logo-icon {
  width: 2rem;
  height: 2rem;
  background-color: var(--primary);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-foreground);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
}

.nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: var(--muted-foreground);
  text-decoration: none;
  transition: color 0.2s;
  cursor: pointer;
}

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

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  width: 12rem;
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
  margin-top: 0.25rem;
  z-index: 10;
}

.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
}

.dropdown-link {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--foreground);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background-color 0.2s;
}

.dropdown-link:hover {
  background-color: var(--accent);
  color: var(--accent-foreground);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  text-decoration: none;
  padding: 0.5rem 1rem;
}

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

.btn-primary:hover {
  background-color: #2563eb;
}

.btn-ghost {
  background-color: transparent;
  color: var(--muted-foreground);
}

.btn-ghost:hover {
  background-color: var(--accent);
  color: var(--accent-foreground);
}

.btn-outline {
  border: 1px solid var(--border);
  background-color: var(--background);
  color: var(--foreground);
}

.btn-outline:hover {
  background-color: var(--accent);
  color: var(--accent-foreground);
}

.btn-lg {
  padding: 0.75rem 2rem;
  font-size: 1.125rem;
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: block;
}

.mobile-menu {
  position: fixed;
  top: 4rem;
  right: 0;
  width: 20rem;
  height: calc(100vh - 4rem);
  background-color: var(--background);
  border-left: 1px solid var(--border);
  padding: 2rem;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  z-index: 40;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-overlay {
  position: fixed;
  top: 4rem;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 30;
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.mobile-nav-link {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--foreground);
  text-decoration: none;
  padding: 0.5rem 0;
}

.mobile-nav-sublink {
  margin-left: 1rem;
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted-foreground);
  margin-top: 0.5rem;
}

/* Hero Section */
.hero {
  padding: 8rem 1rem 5rem;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--secondary);
  color: var(--secondary-foreground);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2rem;
}

.hero-badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: #10b981;
  border-radius: 50%;
  margin-right: 0.5rem;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  margin-bottom: 2.5rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin-bottom: 3rem;
}

.hero-meta {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.hero-meta span {
  font-weight: 600;
}

/* Features Section */
.features {
  padding: 5rem 1rem;
  background-color: rgba(248, 250, 252, 0.3);
}

.features-header {
  text-align: center;
  margin-bottom: 4rem;
}

.features-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.features-header p {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  max-width: 42rem;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 72rem;
  margin: 0 auto;
}

/* Card Styles */
.card {
  border-radius: 0.5rem;
  border: 1px solid transparent;
  background-color: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(4px);
  color: var(--card-foreground);
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -2px rgb(0 0 0 / 0.05);
  transform: translateY(-4px);
}

.card-header {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem;
  padding-bottom: 1rem;
  text-align: center;
}

.card-icon {
  width: 4rem;
  height: 4rem;
  background-color: rgba(59, 130, 246, 0.1);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--primary);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
}

.card-content {
  padding: 0 1.5rem 1.5rem;
}

.card-description {
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-item {
  display: flex;
  align-items: center;
  font-size: 0.875rem;
}

.feature-icon {
  width: 1rem;
  height: 1rem;
  color: var(--primary);
  margin-right: 0.75rem;
  flex-shrink: 0;
}

/* CTA Section */
.cta {
  padding: 5rem 1rem;
}

.cta-content {
  max-width: 56rem;
  margin: 0 auto;
  text-align: center;
}

.cta h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.cta p {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.cta-box {
  background-color: rgba(248, 250, 252, 0.5);
  border-radius: 1rem;
  padding: 2rem;
  margin-bottom: 2rem;
}

.cta-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.cta-feature {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cta-feature-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: #10b981;
  margin-right: 0.5rem;
}

.cta-feature-text {
  font-size: 0.875rem;
  font-weight: 500;
}

.cta-meta {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

/* Footer */
.footer {
  background-color: rgba(248, 250, 252, 0.3);
  border-top: 1px solid var(--border);
  padding: 4rem 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-brand {
  grid-column: span 2;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer-description {
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
  max-width: 28rem;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.footer-contact-item {
  display: flex;
  align-items: center;
}

.footer-contact-icon {
  width: 1rem;
  height: 1rem;
  margin-right: 0.5rem;
}

.footer-section h4 {
  font-weight: 600;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.footer-copyright {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  text-align: center;
}

.footer-links-bottom {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
}

.footer-links-bottom a {
  color: var(--muted-foreground);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--background);
  border-radius: 0.5rem;
  padding: 1.5rem;
  max-width: 28rem;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-overlay.open .modal {
  transform: scale(1);
}

.modal-header {
  text-align: center;
  margin-bottom: 1rem;
}

.modal-icon {
  width: 4rem;
  height: 4rem;
  background-color: rgba(59, 130, 246, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--primary);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.modal-description {
  font-size: 1.125rem;
  color: var(--muted-foreground);
  text-align: center;
}

.modal-footer {
  display: flex;
  justify-content: center;
  margin-top: 1.5rem;
}

/* Page Layouts */
.page {
  min-height: 100vh;
}

.page-main {
  padding-top: 5rem;
}

.page-hero {
  padding: 5rem 1rem;
  text-align: center;
}

.page-hero h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.page-section {
  padding: 5rem 1rem;
}

.prose {
  max-width: none;
  color: var(--muted-foreground);
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--foreground);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.prose ul {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.prose li {
  margin: 0.5rem 0;
}

.contact-info {
  background-color: rgba(248, 250, 252, 0.3);
  padding: 1.5rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
}

/* Responsive Design */
@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
  }
  
  .cta-features {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .cta-feature {
    justify-content: flex-start;
  }
  
  .cta-feature:nth-child(2) {
    justify-content: center;
  }
  
  .cta-feature:nth-child(3) {
    justify-content: flex-end;
  }
  
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: none;
  }
  
  h1 { font-size: 4rem; }
  h2 { font-size: 3rem; }
  
  .hero h1 {
    font-size: 4rem;
  }
  
  .page-hero h1 {
    font-size: 3.75rem;
  }
  
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  h1 { font-size: 4.5rem; }
  
  .hero h1 {
    font-size: 4.5rem;
  }
}