/**
 * Design Tokens - PWA Mobile Design System
 * 
 * This file defines all design tokens as CSS Custom Properties for consistent
 * visual language across the AspecCaptura PWA application.
 * 
 * Token Categories:
 * - Colors (primary, secondary, neutral, semantic, surface)
 * - Typography (font families, sizes, weights, line heights, letter spacing)
 * - Spacing (4px base scale)
 * - Shadows (elevation levels)
 * - Border Radius (corner rounding)
 * - Breakpoints (responsive design)
 * - Transitions (animation timing)
 */

:root {
  /* ============================================
     COLOR TOKENS
     ============================================ */
  
  /* Primary Colors */
  --color-primary: #2F6FED;
  --color-primary-dark: #1E4FBD;
  --color-primary-light: #EEF2FF;
  --color-primary-hover: #2563EB;
  --color-primary-active: #1D4ED8;
  
  /* Secondary Colors */
  --color-secondary: #8B5CF6;
  --color-secondary-dark: #7C3AED;
  --color-secondary-light: #F5F3FF;
  --color-secondary-hover: #7C3AED;
  --color-secondary-active: #6D28D9;
  
  /* Neutral Colors */
  --color-neutral-50: #F9FAFB;
  --color-neutral-100: #F3F4F6;
  --color-neutral-200: #E5E7EB;
  --color-neutral-300: #D1D5DB;
  --color-neutral-400: #9CA3AF;
  --color-neutral-500: #6B7280;
  --color-neutral-600: #4B5563;
  --color-neutral-700: #374151;
  --color-neutral-800: #1F2937;
  --color-neutral-900: #111827;
  
  /* Semantic Colors - Success */
  --color-success: #10B981;
  --color-success-dark: #059669;
  --color-success-light: #D1FAE5;
  --color-success-hover: #059669;
  --color-success-active: #047857;
  
  /* Semantic Colors - Warning */
  --color-warning: #F59E0B;
  --color-warning-dark: #D97706;
  --color-warning-light: #FEF3C7;
  --color-warning-hover: #D97706;
  --color-warning-active: #B45309;
  
  /* Semantic Colors - Error */
  --color-error: #EF4444;
  --color-error-dark: #DC2626;
  --color-error-light: #FEE2E2;
  --color-error-hover: #DC2626;
  --color-error-active: #B91C1C;
  
  /* Semantic Colors - Info */
  --color-info: #3B82F6;
  --color-info-dark: #2563EB;
  --color-info-light: #DBEAFE;
  --color-info-hover: #2563EB;
  --color-info-active: #1D4ED8;
  
  /* Surface Colors */
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-surface-elevated: #FFFFFF;
  --color-border: #E5E7EB;
  --color-divider: #E5E7EB;
  
  /* Text Colors */
  --color-text: #111827;
  --color-text-primary: #111827;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-text-disabled: #D1D5DB;
  --color-text-inverse: #FFFFFF;
  
  /* Overlay Colors */
  --color-overlay: rgba(0, 0, 0, 0.5);
  --color-overlay-light: rgba(0, 0, 0, 0.3);
  --color-overlay-dark: rgba(0, 0, 0, 0.7);
  
  /* ============================================
     TYPOGRAPHY TOKENS
     ============================================ */
  
  /* Font Families */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 
                      "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", 
                      "Segoe UI Emoji", "Segoe UI Symbol";
  --font-family-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, 
                      Consolas, "Liberation Mono", "Courier New", monospace;
  
  /* Font Sizes */
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 32px;
  --font-size-5xl: 40px;
  --font-size-6xl: 48px;
  
  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.01em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  
  /* ============================================
     SPACING TOKENS (4px base scale)
     ============================================ */
  
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  
  /* ============================================
     SHADOW TOKENS (elevation levels)
     ============================================ */
  
  --shadow-none: none;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* ============================================
     BORDER RADIUS TOKENS
     ============================================ */
  
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;
  
  /* ============================================
     BREAKPOINT TOKENS
     ============================================ */
  
  --breakpoint-mobile: 320px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1440px;
  
  /* ============================================
     TRANSITION TOKENS
     ============================================ */
  
  --transition-fast: 150ms;
  --transition-base: 200ms;
  --transition-slow: 300ms;
  --transition-slower: 500ms;
  
  --easing-ease-in: cubic-bezier(0.4, 0, 1, 1);
  --easing-ease-out: cubic-bezier(0, 0, 0.2, 1);
  --easing-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  
  /* ============================================
     Z-INDEX TOKENS
     ============================================ */
  
  --z-index-dropdown: 1000;
  --z-index-sticky: 1020;
  --z-index-fixed: 1030;
  --z-index-modal-backdrop: 1040;
  --z-index-modal: 1050;
  --z-index-popover: 1060;
  --z-index-tooltip: 1070;
  
  /* ============================================
     COMPONENT-SPECIFIC TOKENS
     ============================================ */
  
  /* Touch Targets */
  --touch-target-min: 44px;
  
  /* Border Width */
  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-width-thick: 4px;
  
  /* Focus Ring */
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;
  --focus-ring-color: var(--color-primary);
}

/* ============================================
   DARK MODE THEME
   ============================================ */

[data-theme="dark"] {
  /* Primary Colors (adjusted for dark mode) */
  --color-primary: #3B82F6;
  --color-primary-dark: #2563EB;
  --color-primary-light: #1E3A8A;
  --color-primary-hover: #60A5FA;
  --color-primary-active: #93C5FD;
  
  /* Secondary Colors */
  --color-secondary: #A78BFA;
  --color-secondary-dark: #8B5CF6;
  --color-secondary-light: #4C1D95;
  --color-secondary-hover: #C4B5FD;
  --color-secondary-active: #DDD6FE;
  
  /* Neutral Colors (inverted) */
  --color-neutral-50: #1F2937;
  --color-neutral-100: #374151;
  --color-neutral-200: #4B5563;
  --color-neutral-300: #6B7280;
  --color-neutral-400: #9CA3AF;
  --color-neutral-500: #D1D5DB;
  --color-neutral-600: #E5E7EB;
  --color-neutral-700: #F3F4F6;
  --color-neutral-800: #F9FAFB;
  --color-neutral-900: #FFFFFF;
  
  /* Semantic Colors (adjusted for dark mode) */
  --color-success: #34D399;
  --color-success-dark: #10B981;
  --color-success-light: #064E3B;
  
  --color-warning: #FBBF24;
  --color-warning-dark: #F59E0B;
  --color-warning-light: #78350F;
  
  --color-error: #F87171;
  --color-error-dark: #EF4444;
  --color-error-light: #7F1D1D;
  
  --color-info: #60A5FA;
  --color-info-dark: #3B82F6;
  --color-info-light: #1E3A8A;
  
  /* Surface Colors */
  --color-bg: #111827;
  --color-surface: #1F2937;
  --color-surface-elevated: #374151;
  --color-border: #374151;
  --color-divider: #374151;
  
  /* Text Colors */
  --color-text: #F9FAFB;
  --color-text-primary: #F9FAFB;
  --color-text-secondary: #D1D5DB;
  --color-text-tertiary: #9CA3AF;
  --color-text-disabled: #6B7280;
  --color-text-inverse: #111827;
  
  /* Overlay Colors */
  --color-overlay: rgba(0, 0, 0, 0.7);
  --color-overlay-light: rgba(0, 0, 0, 0.5);
  --color-overlay-dark: rgba(0, 0, 0, 0.9);
  
  /* Shadows (adjusted for dark mode) */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

/* ============================================
   SMOOTH THEME TRANSITIONS
   ============================================ */

:root,
[data-theme="dark"] {
  transition: background-color var(--transition-base) var(--easing-ease-in-out),
              color var(--transition-base) var(--easing-ease-in-out);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  :root,
  [data-theme="dark"] {
    transition: none;
  }
}

/* ============================================
   UTILITY CLASSES FOR DESIGN TOKENS
   ============================================ */

/* Typography utilities */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }

.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* Color utilities */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }

.bg-primary { background-color: var(--color-primary); }
.bg-surface { background-color: var(--color-surface); }
.bg-bg { background-color: var(--color-bg); }

/* Spacing utilities */
.p-0 { padding: var(--space-0); }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }

.m-0 { margin: var(--space-0); }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-3 { margin: var(--space-3); }
.m-4 { margin: var(--space-4); }
.m-5 { margin: var(--space-5); }
.m-6 { margin: var(--space-6); }

/* Border radius utilities */
.rounded-none { border-radius: var(--radius-none); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadow utilities */
.shadow-none { box-shadow: var(--shadow-none); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }