/**
 * Design Tokens - Shadcn/ui Compatible
 *
 * This file provides CSS custom properties (design tokens) following
 * the Shadcn/ui convention. These tokens enable consistent theming
 * and easy theme switching between light and dark modes.
 *
 * Usage:
 *   color: hsl(var(--primary));
 *   background: hsl(var(--background));
 *
 * @version 4.1.0
 */

:root {
  /* ============================================
   * Base Colors - Light Mode
   * ============================================ */

  /* Background and foreground */
  --background: 0 0% 100%;
  --foreground: 222.2 84% 4.9%;

  /* Card */
  --card: 0 0% 100%;
  --card-foreground: 222.2 84% 4.9%;

  /* Popover/Dropdown */
  --popover: 0 0% 100%;
  --popover-foreground: 222.2 84% 4.9%;

  /* Primary - Brand color (ConcreteInfo blue-purple) */
  --primary: 227 44% 52%;
  --primary-foreground: 210 40% 98%;

  /* Secondary */
  --secondary: 210 40% 96.1%;
  --secondary-foreground: 222.2 47.4% 11.2%;

  /* Muted - Subtle backgrounds */
  --muted: 210 40% 96.1%;
  --muted-foreground: 215.4 16.3% 46.9%;

  /* Accent - Highlight color */
  --accent: 210 40% 96.1%;
  --accent-foreground: 222.2 47.4% 11.2%;

  /* Destructive - Error/danger states */
  --destructive: 0 84.2% 60.2%;
  --destructive-foreground: 210 40% 98%;

  /* Success - Positive states */
  --success: 142 76% 36%;
  --success-foreground: 210 40% 98%;

  /* Warning - Caution states */
  --warning: 38 92% 50%;
  --warning-foreground: 0 0% 0%;

  /* Info - Informational states */
  --info: 199 89% 48%;
  --info-foreground: 210 40% 98%;

  /* Border and input */
  --border: 214.3 31.8% 91.4%;
  --input: 214.3 31.8% 91.4%;

  /* Focus ring */
  --ring: 227 44% 52%;

  /* ============================================
   * Spacing & Sizing
   * ============================================ */

  --radius: 0.5rem;
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);

  /* Spacing unit (4px base) */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;

  /* ============================================
   * Typography
   * ============================================ */

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Courier New', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* ============================================
   * Shadows
   * ============================================ */

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* ============================================
   * Transitions
   * ============================================ */

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ============================================
   * Z-Index Scale
   * ============================================ */

  --z-dropdown: 50;
  --z-sticky: 100;
  --z-modal: 200;
  --z-popover: 300;
  --z-tooltip: 400;
  --z-toast: 500;
}

/* ============================================
 * Dark Mode
 * ============================================ */

.dark,
[data-theme="dark"] {
  /* Background and foreground */
  --background: 222.2 84% 4.9%;
  --foreground: 210 40% 98%;

  /* Card */
  --card: 222.2 84% 4.9%;
  --card-foreground: 210 40% 98%;

  /* Popover/Dropdown */
  --popover: 222.2 84% 4.9%;
  --popover-foreground: 210 40% 98%;

  /* Primary */
  --primary: 227 44% 52%;
  --primary-foreground: 222.2 47.4% 11.2%;

  /* Secondary */
  --secondary: 217.2 32.6% 17.5%;
  --secondary-foreground: 210 40% 98%;

  /* Muted */
  --muted: 217.2 32.6% 17.5%;
  --muted-foreground: 215 20.2% 65.1%;

  /* Accent */
  --accent: 217.2 32.6% 17.5%;
  --accent-foreground: 210 40% 98%;

  /* Destructive */
  --destructive: 0 62.8% 30.6%;
  --destructive-foreground: 210 40% 98%;

  /* Success */
  --success: 142 76% 26%;
  --success-foreground: 210 40% 98%;

  /* Warning */
  --warning: 38 92% 40%;
  --warning-foreground: 0 0% 100%;

  /* Info */
  --info: 199 89% 38%;
  --info-foreground: 210 40% 98%;

  /* Border and input */
  --border: 217.2 32.6% 17.5%;
  --input: 217.2 32.6% 17.5%;

  /* Focus ring */
  --ring: 227 44% 52%;
}

/* ============================================
 * Semantic Color Classes
 * ============================================ */

.bg-background { background-color: hsl(var(--background)); }
.bg-foreground { background-color: hsl(var(--foreground)); }
.bg-card { background-color: hsl(var(--card)); }
.bg-primary { background-color: hsl(var(--primary)); }
.bg-secondary { background-color: hsl(var(--secondary)); }
.bg-muted { background-color: hsl(var(--muted)); }
.bg-accent { background-color: hsl(var(--accent)); }
.bg-destructive { background-color: hsl(var(--destructive)); }

.text-foreground { color: hsl(var(--foreground)); }
.text-primary { color: hsl(var(--primary)); }
.text-secondary { color: hsl(var(--secondary-foreground)); }
.text-muted-foreground { color: hsl(var(--muted-foreground)); }
.text-destructive { color: hsl(var(--destructive)); }

.border-border { border-color: hsl(var(--border)); }
.border-primary { border-color: hsl(var(--primary)); }
.border-input { border-color: hsl(var(--input)); }

/* ============================================
 * Utility Classes
 * ============================================ */

/* Focus ring */
.focus-ring:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 2px;
}

/* Button base styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background-color: hsl(var(--primary) / 0.9);
}

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

.btn-secondary:hover {
  background-color: hsl(var(--secondary) / 0.8);
}

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

.btn-destructive:hover {
  background-color: hsl(var(--destructive) / 0.9);
}

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

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

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

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

/* Badge styles */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: 9999px;
}

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

.badge-secondary {
  background-color: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
}

.badge-destructive {
  background-color: hsl(var(--destructive));
  color: hsl(var(--destructive-foreground));
}

/* Input styles */
.input {
  display: flex;
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--text-sm);
  border: 1px solid hsl(var(--input));
  border-radius: var(--radius);
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  transition: border-color var(--transition-fast);
}

.input:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 2px;
}

.input::placeholder {
  color: hsl(var(--muted-foreground));
}
