/**
 * THEME.CSS
 * Design tokens and CSS variables for the application
 * All colors, spacing, typography, and other design tokens are defined here
 */

:root {
  /* ============================================
     PRIMARY BRAND COLORS
     Based on Indigo scheme from index.html
     ============================================ */
  --color-primary: #4338ca;
  --color-primary-dark: #312e81;
  --color-primary-light: #6366f1;
  --color-primary-lighter: #818cf8;
  --color-primary-lightest: #c7d2fe;
  
  /* Gradient variants */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  --gradient-primary-hover: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  
  /* Legacy purple gradient (for migration) */
  --color-purple-start: #667eea;
  --color-purple-end: #764ba2;
  --gradient-purple: linear-gradient(135deg, var(--color-purple-start) 0%, var(--color-purple-end) 100%);
  
  /* ============================================
     SEMANTIC COLORS
     For success, warning, error, info states
     ============================================ */
  --color-success: #10b981;
  --color-success-dark: #059669;
  --color-success-light: #34d399;
  --color-success-bg: #d1fae5;
  
  --color-warning: #f59e0b;
  --color-warning-dark: #d97706;
  --color-warning-light: #fbbf24;
  --color-warning-bg: #fef3c7;
  
  --color-error: #ef4444;
  --color-error-dark: #dc2626;
  --color-error-light: #f87171;
  --color-error-bg: #fee2e2;
  
  --color-info: #3b82f6;
  --color-info-dark: #2563eb;
  --color-info-light: #60a5fa;
  --color-info-bg: #dbeafe;
  
  /* Blue gradient for admin pages */
  --color-blue-start: #2563eb;
  --color-blue-end: #1e40af;
  --gradient-blue: linear-gradient(135deg, var(--color-blue-start) 0%, var(--color-blue-end) 100%);
  
  /* ============================================
     NEUTRAL COLORS (GRAY SCALE)
     For backgrounds, borders, text
     ============================================ */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Text colors */
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-tertiary: var(--color-gray-500);
  --color-text-inverse: #ffffff;
  --color-text-muted: var(--color-gray-400);
  
  /* Background colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: var(--color-gray-50);
  --color-bg-tertiary: var(--color-gray-100);
  --color-bg-overlay: rgba(0, 0, 0, 0.5);
  
  /* Border colors */
  --color-border-light: var(--color-gray-200);
  --color-border-medium: var(--color-gray-300);
  --color-border-dark: var(--color-gray-400);
  
  /* ============================================
     SPACING SCALE (8px grid system)
     ============================================ */
  --spacing-0: 0;
  --spacing-1: 0.25rem;   /* 4px */
  --spacing-2: 0.5rem;    /* 8px */
  --spacing-3: 0.75rem;   /* 12px */
  --spacing-4: 1rem;      /* 16px */
  --spacing-5: 1.25rem;   /* 20px */
  --spacing-6: 1.5rem;    /* 24px */
  --spacing-8: 2rem;      /* 32px */
  --spacing-10: 2.5rem;   /* 40px */
  --spacing-12: 3rem;     /* 48px */
  --spacing-16: 4rem;     /* 64px */
  --spacing-20: 5rem;     /* 80px */
  --spacing-24: 6rem;     /* 96px */
  
  /* ============================================
     BORDER RADIUS SCALE
     ============================================ */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.25rem;  /* 20px */
  --radius-full: 9999px;
  
  /* ============================================
     SHADOW SCALE
     ============================================ */
  --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);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  
  /* ============================================
     ANIMATION DURATIONS
     ============================================ */
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 400ms;
  
  /* Easing functions */
  --easing-linear: linear;
  --easing-ease: ease;
  --easing-ease-in: ease-in;
  --easing-ease-out: ease-out;
  --easing-ease-in-out: ease-in-out;
  
  /* ============================================
     Z-INDEX SCALE
     ============================================ */
  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* ============================================
     NAVIGATION
     ============================================ */
  --nav-height: 72px;
  --nav-bg: var(--gradient-primary);
  --nav-text-color: var(--color-text-inverse);
  
  /* ============================================
     GLASSMORPHISM
     For glassmorphic effects
     ============================================ */
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-blur: blur(20px);
  
  /* ============================================
     RESPONSIVE BREAKPOINTS
     ============================================ */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* Dark mode support (for future use) */
@media (prefers-color-scheme: dark) {
  :root {
    /* Dark mode overrides would go here */
  }
}