:root {
    --background: 210 40% 98%;
    --foreground: 215 25% 27%;
    --card: 0 0% 100%;
    --card-foreground: 215 25% 27%;
    --popover: 0 0% 100%;
    --popover-foreground: 215 25% 27%;
    --primary: 196 100% 45%;
    --primary-foreground: 210 40% 98%;
    --secondary: 200 50% 96%;
    --secondary-foreground: 215 25% 27%;
    --muted: 210 40% 96.1%;
    --muted-foreground: 215.4 16.3% 46.9%;
    --accent: 196 100% 45%;
    --accent-foreground: 210 40% 98%;
    --destructive: 0 84.2% 60.2%;
    --destructive-foreground: 210 40% 98%;
    --border: 214.3 31.8% 91.4%;
    --input: 214.3 31.8% 91.4%;
    --ring: 196 100% 45%;
    --radius: 0.5rem;
    
    --hilo-50: #f0f9ff;
    --hilo-100: #e0f2fe;
    --hilo-200: #bae6fd;
    --hilo-300: #7dd3fc;
    --hilo-400: #38bdf8;
    --hilo-500: #0ea5e9;
    --hilo-600: #0284c7;
    --hilo-700: #0369a1;
    --hilo-800: #075985;
    --hilo-900: #0c4a6e;
    --hilo-950: #082f49;
  }
  
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: hsl(210, 40%, 98%);
    color: hsl(215, 25%, 27%);
    line-height: 1.6;
  }
  
  .container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
  }
  
  @media (min-width: 640px) {
    .container {
      padding: 0 1.5rem;
    }
  }
  
  @media (min-width: 1024px) {
    .container {
      padding: 0 2rem;
    }
  }
  
  /* Navbar styles */
  .site-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
  }
  
  .navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
  }
  
  .navbar-logo {
    display: flex;
    align-items: center;
  }
  
  .logo-link {
    text-decoration: none;
  }
  
  .logo-text {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--hilo-700);
  }
  
  @media (min-width: 640px) {
    .logo-text {
      font-size: 1.5rem;
    }
  }
  
  .logo-highlight {
    color: var(--hilo-500);
  }
  
  .navbar-links {
    display: flex;
    gap: 1.5rem;
  }
  
  .nav-link {
    color: hsl(215, 25%, 27%);
    text-decoration: none;
    transition: color 0.2s;
  }
  
  .nav-link:hover, .nav-link.active {
    color: var(--hilo-600);
  }
  
  /* Mobile menu */
  .mobile-menu-button {
    display: none;
  }
  
  .mobile-menu {
    display: none;
    position: absolute;
    left: 1rem;
    right: 1rem;
    padding: 1rem 0;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    margin-top: 0.5rem;
    z-index: 49;
  }
  
  .mobile-menu.open {
    display: block;
  }
  
  .menu-icon {
    width: 1.5rem;
    height: 1.5rem;
  }
  
  .mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 0.5rem;
  }
  
  @media (max-width: 768px) {
    .mobile-menu-button {
      display: block;
    }
    
    .desktop-nav {
      display: none;
    }
  }
  
  /* Demo page styles */
  .demo-content {
    padding-top: 5rem;
    padding-bottom: 2rem;
  }
  
  @media (min-width: 768px) {
    .demo-content {
      padding-top: 6rem;
      padding-bottom: 3rem;
    }
  }
  
  .demo-header {
    text-align: center;
    margin-bottom: 2rem;
  }
  
  @media (min-width: 768px) {
    .demo-header {
      margin-bottom: 3rem;
    }
  }
  
  .demo-header h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.75rem;
  }
  
  @media (min-width: 768px) {
    .demo-header h1 {
      font-size: 2.5rem;
      margin-bottom: 1rem;
    }
  }
  
  .highlight {
    color: var(--hilo-500);
  }
  
  .subtitle {
    font-size: 1rem;
    color: hsl(215.4, 16.3%, 46.9%);
  }
  
  @media (min-width: 768px) {
    .subtitle {
      font-size: 1.125rem;
    }
  }
  
  .demo-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
  }
  
  @media (min-width: 640px) {
    .demo-section {
      padding: 0;
    }
  }
  
  .demo-section h2 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: hsl(215, 25%, 27%);
  }
  
  @media (min-width: 768px) {
    .demo-section h2 {
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }
  }
  
  .demo-section p {
    margin-bottom: 1.5rem;
  }
  
  .demo-card {
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin: 1.5rem 0;
    overflow: hidden;
  }
  
  @media (min-width: 768px) {
    .demo-card {
      margin: 2rem 0;
    }
  }
  
  .card-header {
    background-color: var(--hilo-50);
    padding: 0.75rem;
    font-weight: 600;
    border-bottom: 1px solid var(--hilo-100);
  }
  
  @media (min-width: 768px) {
    .card-header {
      padding: 1rem;
    }
  }
  
  .card-content {
    padding: 1rem;
  }
  
  @media (min-width: 768px) {
    .card-content {
      padding: 1.5rem;
    }
  }
  
  /* Footer styles */
  .footer {
    background-color: var(--hilo-50);
    padding: 1.5rem 0;
    margin-top: 2rem;
  }
  
  @media (min-width: 768px) {
    .footer {
      padding: 2rem 0;
      margin-top: 3rem;
    }
  }
  
  .footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    text-align: center;
  }
  
  @media (min-width: 768px) {
    .footer-content {
      gap: 1rem;
    }
  }
  
  .footer-logo {
    margin-bottom: 0.5rem;
  }
  
  .copyright {
    font-size: 0.8125rem;
    color: hsl(215.4, 16.3%, 46.9%);
  }
  
  @media (min-width: 768px) {
    .copyright {
      font-size: 0.875rem;
    }
  }