/* Color Variables */
:root {
    --background: oklch(0.99 0 0);
    --foreground: oklch(0.15 0 0);
    --card: oklch(1 0 0);
    --card-foreground: oklch(0.15 0 0);
    --muted-foreground: oklch(0.5 0 0);
    --border: oklch(0.92 0 0);
  }
  
  .dark {
    --background: oklch(0.12 0 0);
    --foreground: oklch(0.98 0 0);
    --card: oklch(0.15 0 0);
    --card-foreground: oklch(0.98 0 0);
    --muted-foreground: oklch(0.65 0 0);
    --border: oklch(0.24 0 0);
  }
  
  /* Base Styles */
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans",
      "Droid Sans", "Helvetica Neue", sans-serif;
    background-color: var(--background);
    color: var(--foreground);
  }
  
  .bg-background {
    background-color: var(--background);
  }
  
  .text-muted-foreground {
    color: var(--muted-foreground);
  }
  
  .border-border {
    border-color: var(--border);
  }
  
  .bg-foreground {
    background-color: var(--foreground);
  }
  
  /* Card Styles */
  .card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
  }
  
  .card-content {
    display: block;
  }
  
  /* Button Styles */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
    text-decoration: none;
    padding: 0.5rem 1rem;
    white-space: nowrap;
  }
  
  .btn-outline {
    border: 1px solid var(--border);
    background-color: transparent;
    color: var(--foreground);
  }
  
  .btn-outline:hover {
    background-color: var(--card);
    opacity: 0.9;
  }
  
  .btn-primary {
    background-color: var(--foreground);
    color: var(--background);
    border: none;
  }
  
  .btn-primary:hover {
    opacity: 0.9;
  }
  
  /* Badge Styles */
  .badge {
    display: inline-flex;
    align-items: center;
    border-radius: 0.25rem;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--card);
    border: 1px solid var(--border);
    color: var(--foreground);
  }
  
  /* Utility Classes */
  .line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  /* Responsive Typography */
  @media (max-width: 640px) {
    .line-clamp-2 {
      -webkit-line-clamp: 3;
    }
  }
  
  /* Smooth Transitions */
  * {
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  }
  
  /* Touch-friendly on mobile */
  @media (max-width: 768px) {
    .btn {
      min-height: 44px;
    }
  
    a,
    button {
      -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }
  }
  
  /* Hover effects for desktop */
  @media (hover: hover) {
    .btn:hover {
      transform: translateY(-1px);
    }
  
    .card:hover {
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    }
  }
  
  /* Floating button animation */
  @keyframes pulse {
    0%,
    100% {
      transform: scale(1);
    }
    50% {
      transform: scale(1.05);
    }
  }

  #chatButton:hover {
    animation: pulse 2s infinite;
  }

  /* Fade-in animation */
  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  .fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
  }