/* ==================================================================
   CSS Custom Properties (Variables)
   ================================================================== */

:root {
  /* Primary Colors - Client */
  --color-primary: #667eea;
  --color-primary-hover: #5568d3;
  --color-primary-gradient-start: #667eea;
  --color-primary-gradient-end: #764ba2;

  /* Primary Colors - Admin */
  --color-admin: #1e3c72;
  --color-admin-hover: #2a5298;
  --color-admin-accent: #f59e0b;

  /* Semantic Colors */
  --color-success: #28a745;
  --color-success-light: #d4edda;
  --color-success-dark: #155724;
  --color-success-border: #c3e6cb;

  --color-danger: #dc3545;
  --color-danger-light: #f8d7da;
  --color-danger-dark: #721c24;
  --color-danger-border: #f5c6cb;

  --color-warning: #ffc107;
  --color-warning-light: #fff3cd;
  --color-warning-dark: #856404;
  --color-warning-border: #ffeaa7;

  --color-info: #17a2b8;
  --color-info-light: #d1ecf1;
  --color-info-dark: #0c5460;
  --color-info-border: #bee5eb;

  /* Gray Scale */
  --color-gray-50: #f8f9fa;
  --color-gray-100: #f5f7fa;
  --color-gray-200: #e9ecef;
  --color-gray-300: #dee2e6;
  --color-gray-400: #ced4da;
  --color-gray-500: #9ca3af;
  --color-gray-600: #6c757d;
  --color-gray-700: #495057;
  --color-gray-800: #333;
  --color-gray-900: #212529;

  /* Text Colors */
  --color-text-primary: #212529;
  --color-text-secondary: #495057;
  --color-text-muted: #6c757d;
  --color-text-light: #999;
  --color-text-lighter: #666;

  /* Background Colors */
  --color-bg-body: #f5f7fa;
  --color-bg-white: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-bg-dark: #333;

  /* Border Colors */
  --color-border: #dee2e6;
  --color-border-light: #e9ecef;
  --color-border-dark: #ced4da;

  /* Spacing Scale */
  --spacing-xs: 5px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 15px;
  --spacing-xl: 20px;
  --spacing-2xl: 25px;
  --spacing-3xl: 30px;
  --spacing-4xl: 40px;

  /* Font Sizes */
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-md: 15px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 22px;
  --font-size-4xl: 24px;
  --font-size-5xl: 28px;
  --font-size-6xl: 32px;
  --font-size-7xl: 36px;
  --font-size-8xl: 48px;

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Font Family */
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);

  /* Transitions */
  --transition-fast: 0.15s;
  --transition-base: 0.2s;
  --transition-slow: 0.3s;

  /* Z-Index Scale */
  --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;
}