/**
 * Team Portal - Global CSS Variables
 * Centralized design tokens for consistent styling across all components
 * 
 * @package Team Portal
 * @version 2.2.4
 * @since 2.2.4
 */

:root {
  /* ========== Transitions ========== */
  --transition-fast: all 0.2s ease;
  --transition-normal: all 0.3s ease;
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* ========== Border Radius ========== */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* ========== Spacing ========== */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  
  /* ========== Shadows ========== */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* ========== Colors - Neutral ========== */
  --color-white: #ffffff;
  --color-black: #000000;
  --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;
  
  /* ========== Colors - Primary (Blue) ========== */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;
  
  /* ========== Colors - Success (Green) ========== */
  --color-success-50: #f0fdf4;
  --color-success-100: #dcfce7;
  --color-success-500: #22c55e;
  --color-success-600: #16a34a;
  --color-success-700: #15803d;
  
  /* ========== Colors - Warning (Yellow) ========== */
  --color-warning-50: #fefce8;
  --color-warning-100: #fef9c3;
  --color-warning-500: #eab308;
  --color-warning-600: #ca8a04;
  
  /* ========== Colors - Error (Red) ========== */
  --color-error-50: #fef2f2;
  --color-error-100: #fee2e2;
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;
  --color-error-700: #b91c1c;
  --color-error-800: #991b1b;
  
  /* ========== Colors - Info (Sky) ========== */
  --color-info-50: #f0f9ff;
  --color-info-100: #e0f2fe;
  --color-info-500: #0ea5e9;
  --color-info-600: #0284c7;
  
  /* ========== Typography ========== */
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-arabic: 'Cairo', 'Tajawal', 'Noto Kufi Arabic', 'Segoe UI', Tahoma, sans-serif;
  
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* ========== Z-Index Layers ========== */
  --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;
}

/* ========== Dark Mode Variables ========== */
[data-theme="dark"] {
  --color-bg-primary: #1f2937;
  --color-bg-secondary: #111827;
  --color-text-primary: #f9fafb;
  --color-text-secondary: #d1d5db;
  --color-border: #374151;
}

/* ========== Light Mode Variables (Default) ========== */
[data-theme="light"],
:root {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-text-primary: #111827;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
}

/* ========== Component-Specific Variables ========== */

/* Buttons */
:root {
  --btn-padding-sm: 8px 12px;
  --btn-padding-md: 10px 16px;
  --btn-padding-lg: 12px 20px;
  --btn-radius: var(--radius-md);
  --btn-transition: var(--transition-smooth);
}

/* Cards */
:root {
  --card-padding: var(--space-lg);
  --card-radius: var(--radius-lg);
  --card-shadow: var(--shadow-md);
  --card-transition: var(--transition-slow);
}

/* Modals */
:root {
  --modal-radius: var(--radius-lg);
  --modal-shadow: var(--shadow-xl);
  --modal-transition: var(--transition-smooth);
}

/* Tables */
:root {
  --table-border-color: var(--color-gray-200);
  --table-hover-bg: var(--color-gray-50);
  --table-stripe-bg: #fafbfc;
  --table-transition: var(--transition-normal);
}

/* Filters */
:root {
  --filter-padding: var(--space-md);
  --filter-radius: var(--radius-md);
  --filter-transition: var(--transition-smooth);
}

/* Tabs */
:root {
  --tab-padding: 12px 16px;
  --tab-radius: var(--radius-md);
  --tab-transition-fast: all 0.2s ease;
  --tab-transition-normal: all 0.3s ease;
  --tab-transition-slow: var(--transition-slow);
}