/**
 * Modern Design System
 * Version 2.0.0
 * A professional, refined design system with enhanced typography and colors
 */

/* ========== RESETS AND NORMALIZATION ========== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ========== COLOR VARIABLES ========== */
:root {
  /* Color Palette - Neutral */
  --color-white: #ffffff;
  --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;
  --color-black: #000000;

  /* Color Palette - Primary (refined 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;  /* Base */
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;
  
  /* Color Palette - Success */
  --color-success-50: #ecfdf5;
  --color-success-100: #d1fae5;
  --color-success-200: #a7f3d0;
  --color-success-300: #6ee7b7;
  --color-success-400: #34d399;
  --color-success-500: #10b981;  /* Base */
  --color-success-600: #059669;
  --color-success-700: #047857;
  --color-success-800: #065f46;
  --color-success-900: #064e3b;
  
  /* Color Palette - Warning */
  --color-warning-50: #fffbeb;
  --color-warning-100: #fef3c7;
  --color-warning-200: #fde68a;
  --color-warning-300: #fcd34d;
  --color-warning-400: #fbbf24;
  --color-warning-500: #f59e0b;  /* Base */
  --color-warning-600: #d97706;
  --color-warning-700: #b45309;
  --color-warning-800: #92400e;
  --color-warning-900: #78350f;
  
  /* Color Palette - Danger */
  --color-danger-50: #fef2f2;
  --color-danger-100: #fee2e2;
  --color-danger-200: #fecaca; 
  --color-danger-300: #fca5a5;
  --color-danger-400: #f87171;
  --color-danger-500: #ef4444;  /* Base */
  --color-danger-600: #dc2626;
  --color-danger-700: #b91c1c;
  --color-danger-800: #991b1b;
  --color-danger-900: #7f1d1d;
  
  /* Color Palette - Info */
  --color-info-50: #f0f9ff;
  --color-info-100: #e0f2fe;
  --color-info-200: #bae6fd;
  --color-info-300: #7dd3fc;
  --color-info-400: #38bdf8;
  --color-info-500: #0ea5e9; /* Base */
  --color-info-600: #0284c7;
  --color-info-700: #0369a1;
  --color-info-800: #075985;
  --color-info-900: #0c4a6e;
  
  /* Semantic Colors */
  --color-background: var(--color-gray-50);
  --color-surface: var(--color-white);
  --color-surface-raised: var(--color-white);
  --color-surface-lowered: var(--color-gray-50);
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-700);
  --color-text-muted: var(--color-gray-500);
  --color-text-disabled: var(--color-gray-400);
  --color-text-on-dark: var(--color-white);
  --color-text-on-light: var(--color-gray-900);
  --color-border: var(--color-gray-200);
  --color-divider: var(--color-gray-200);
  --color-focus-ring: rgba(59, 130, 246, 0.5);
  
  /* Shadow Colors */
  --shadow-color: 220 3% 15%;
  --shadow-light: 220 3% 15% / 0.1;
  
  /* Variables needed for admin.css */
  --primary-color: var(--color-primary-500);
  --primary-hover: var(--color-primary-600);
  --success-color: var(--color-success-500);
  --warning-color: var(--color-warning-500);
  --danger-color: var(--color-danger-500);
  --info-color: var(--color-info-500);
  
  --text-color: var(--color-gray-800);
  --text-color-light: var(--color-gray-600);
  --text-color-muted: var(--color-gray-500);
  
  --border-color: var(--color-gray-200);
  
  --neutral-50: var(--color-gray-50);
  --neutral-100: var(--color-gray-100);
  --neutral-200: var(--color-gray-200);
  --neutral-300: var(--color-gray-300);
  --neutral-400: var(--color-gray-400);
  --neutral-500: var(--color-gray-500);
  --neutral-600: var(--color-gray-600);
  --neutral-700: var(--color-gray-700);
  --neutral-800: var(--color-gray-800);
  --neutral-900: var(--color-gray-900);
}

/* ========== TYPOGRAPHY ========== */
:root {
  /* Font Family - Improved Readability */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'SF Mono', SFMono-Regular, Consolas, monospace;
  
  /* Font Sizes - Refined Scale */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  
  /* Line Heights - Optimized for Readability */
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 1.75;
  --line-height-paragraph: 1.6;
  
  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Letter Spacing */
  --letter-spacing-tighter: -0.05em;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0em;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;
}

/* ========== SPACING ========== */
:root {
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0-5: 0.125rem;  /* 2px */
  --spacing-1: 0.25rem;     /* 4px */
  --spacing-1-5: 0.375rem;  /* 6px */
  --spacing-2: 0.5rem;      /* 8px */
  --spacing-2-5: 0.625rem;  /* 10px */
  --spacing-3: 0.75rem;     /* 12px */
  --spacing-3-5: 0.875rem;  /* 14px */
  --spacing-4: 1rem;        /* 16px */
  --spacing-5: 1.25rem;     /* 20px */
  --spacing-6: 1.5rem;      /* 24px */
  --spacing-7: 1.75rem;     /* 28px */
  --spacing-8: 2rem;        /* 32px */
  --spacing-9: 2.25rem;     /* 36px */
  --spacing-10: 2.5rem;     /* 40px */
  --spacing-12: 3rem;       /* 48px */
  --spacing-14: 3.5rem;     /* 56px */
  --spacing-16: 4rem;       /* 64px */
  --spacing-20: 5rem;       /* 80px */
  --spacing-24: 6rem;       /* 96px */
  --spacing-28: 7rem;       /* 112px */
  --spacing-32: 8rem;       /* 128px */
  --spacing-36: 9rem;       /* 144px */
  --spacing-40: 10rem;      /* 160px */
  --spacing-48: 12rem;      /* 192px */
  --spacing-56: 14rem;      /* 224px */
  --spacing-64: 16rem;      /* 256px */
}

/* ========== BORDER RADIUS ========== */
:root {
  --radius-none: 0;
  --radius-sm: 0.125rem;    /* 2px */
  --radius-md: 0.25rem;     /* 4px */
  --radius-lg: 0.375rem;    /* 6px */
  --radius-xl: 0.5rem;      /* 8px */
  --radius-2xl: 0.75rem;    /* 12px */
  --radius-3xl: 1rem;       /* 16px */
  --radius-full: 9999px;
  
  /* Additional border radius variables for admin.css */
  --border-radius-sm: var(--radius-sm);
  --border-radius-md: var(--radius-md);
  --border-radius-lg: var(--radius-lg);
  --border-radius-xl: var(--radius-xl);
  --border-radius-2xl: var(--radius-2xl);
  --border-radius-3xl: var(--radius-3xl);
  --border-radius-full: var(--radius-full);
}

/* ========== BOX SHADOWS ========== */
:root {
  /* Modern, subtle shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 
               0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
  
  /* Colored shadows for state indications */
  --shadow-primary: 0 0 0 3px rgba(59, 130, 246, 0.5);
  --shadow-success: 0 0 0 3px rgba(16, 185, 129, 0.5);
  --shadow-warning: 0 0 0 3px rgba(245, 158, 11, 0.5);
  --shadow-danger: 0 0 0 3px rgba(239, 68, 68, 0.5);
}

/* ========== TRANSITIONS ========== */
:root {
  /* Refined transitions for smoother interactions */
  --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);
  
  --transition-all: all var(--transition-normal);
  --transition-colors: background-color var(--transition-normal), 
                      border-color var(--transition-normal), 
                      color var(--transition-normal), 
                      fill var(--transition-normal), 
                      stroke var(--transition-normal);
  --transition-opacity: opacity var(--transition-normal);
  --transition-shadow: box-shadow var(--transition-normal);
  --transition-transform: transform var(--transition-normal);
}

/* ========== Z-INDEX ========== */
:root {
  --z-index-0: 0;
  --z-index-10: 10;
  --z-index-20: 20;
  --z-index-30: 30;
  --z-index-40: 40;
  --z-index-50: 50;
  --z-index-100: 100;
  --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;
  --z-index-auto: auto;
}

/* ========== LAYOUT ========== */
:root {
  --sidebar-width: 280px;
  --sidebar-collapsed-width: 80px;
  --topbar-height: 64px;
  --footer-height: 56px;
  --container-max-width: 1280px;
  --page-padding: var(--spacing-6);
}

@media (max-width: 768px) {
  :root {
    --page-padding: var(--spacing-4);
  }
}

/* ========== BASE ELEMENTS ========== */
body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-6);
  letter-spacing: var(--letter-spacing-tighter);
}

h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-5);
}

h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
}

h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-3);
}

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}

h6 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-2);
}

p {
  margin-top: 0;
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-paragraph);
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-700);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========== UTILITY CLASSES ========== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ========== FORM ELEMENTS ========== */
.form-control {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  background-clip: padding-box;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-control:focus {
  color: var(--color-text-primary);
  background-color: var(--color-white);
  border-color: var(--color-primary-400);
  outline: 0;
  box-shadow: var(--shadow-primary);
}

.form-control::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
}

.form-label {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

/* ========== TABLE STYLES ========== */
.table {
  width: 100%;
  margin-bottom: 1rem;
  color: var(--color-text-primary);
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 0.75rem;
  vertical-align: top;
  border-top: 1px solid var(--color-border);
}

.table thead th {
  vertical-align: bottom;
  border-bottom: 2px solid var(--color-border);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  letter-spacing: var(--letter-spacing-wide);
}

.table tbody + tbody {
  border-top: 2px solid var(--color-border);
}

.table-sm th,
.table-sm td {
  padding: 0.3rem;
}

.table-bordered {
  border: 1px solid var(--color-border);
}

.table-bordered th,
.table-bordered td {
  border: 1px solid var(--color-border);
}

.table-hover tbody tr:hover {
  background-color: var(--color-gray-50);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: var(--color-gray-50);
}

/* Table container with shadow and rounded corners */
.table-container {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
}