/**
 * AITRAIN Admin - World-Class Design System
 * Version 2.1 - Production Ready with Standardized Design Tokens
 */

/* ============================================
   VARIABLE FONT DECLARATIONS
   Performance-optimized with single file for all weights
   ============================================ */

/* Fallback for older browsers that don't support variable fonts */
@supports not (font-variation-settings: normal) {
  @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
}

/* Typography: Inter only — clean, professional */

/* Variable Font: Inter (fallback, supports weights 100-900) */
@font-face {
  font-family: 'Inter';
  src: url('https://fonts.gstatic.com/s/inter/v13/UcC73FwrK3iLTcviYw.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('https://fonts.gstatic.com/s/inter/v13/UcC73FwrK3iLTcviYwY.woff2') format('woff2');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* Variable Font: JetBrains Mono for code */
@font-face {
  font-family: 'JetBrains Mono';
  src: url('https://fonts.gstatic.com/s/jetbrainsmono/v18/tDbY2o-flEEny0FZhsfKu5WU4zr3E_BX0PnT8RD8yKxjOVGa.woff2') format('woff2');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

/* ============================================
   CSS VARIABLES - Design Tokens
   ============================================ */
:root {
  /* ===========================================
     SPACING SCALE (4px base unit)
     Use these for consistent spacing throughout
     =========================================== */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* ===========================================
     TYPOGRAPHY SYSTEM — Inter everywhere
     =========================================== */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Optical sizing for better rendering at different sizes */
  --font-optical-sizing: auto;

  /* ===========================================
     FLUID TYPOGRAPHY SCALE - Phase 13 (2026 Design)
     Uses CSS clamp() for smooth responsive scaling
     Scales between 320px and 1200px viewport width
     Minimum sizes ensure accessibility (never below 12px)
     =========================================== */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.8125rem, 0.75rem + 0.3125vw, 0.9375rem);
  --text-base: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-lg: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-xl: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-2xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-3xl: clamp(1.5rem, 1.25rem + 1.25vw, 1.875rem);
  --text-4xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.25rem);
  --text-5xl: clamp(2.25rem, 1.75rem + 2.5vw, 3rem);
  --text-6xl: clamp(2.75rem, 2rem + 3.75vw, 3.75rem);

  /* Font weight scale using variable font */
  --font-weight-thin: 100;
  --font-weight-extralight: 200;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  /* Legacy Font Weights (for backward compatibility) */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* ===========================================
     BORDER RADIUS SCALE
     Consistent rounding for UI elements
     =========================================== */
  --radius-sm: 0.125rem;  /* 2px - subtle rounding */
  --radius-md: 0.25rem;   /* 4px - buttons, inputs */
  --radius-lg: 0.375rem;  /* 6px - cards */
  --radius-xl: 0.5rem;    /* 8px - modals */
  --radius-2xl: 0.625rem; /* 10px - large containers */
  --radius-3xl: 0.75rem;  /* 12px - hero sections */
  --radius-full: 9999px;  /* pills, avatars */

  /* ===========================================
     SHADOW SCALE
     Elevation system for depth hierarchy
     =========================================== */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 8px rgba(0,0,0,0.08);
  --shadow-xl: 0 8px 16px rgba(0,0,0,0.1);
  --shadow-2xl: 0 16px 32px rgba(0,0,0,0.12);
  --shadow-inner: inset 0 2px 4px rgba(0,0,0,0.06);
  --shadow-none: none;

  /* ===========================================
     STANDARDIZED COLOR SYSTEM
     Semantic naming convention for consistency
     =========================================== */

  /* Primary Brand Colors (Orange) */
  --color-primary-500: #F26522;
  --color-primary-400: #ff8548;
  --color-primary-600: #d9581d;
  --color-primary-glow: rgba(242, 101, 34, 0.15);
  --color-primary-bg: rgba(242, 101, 34, 0.06);
  --color-primary-bg-subtle: rgba(242, 101, 34, 0.04);
  --color-primary-bg-hover: rgba(242, 101, 34, 0.08);
  --color-primary-shadow-sm: 0 2px 8px rgba(242, 101, 34, 0.12);
  --color-primary-shadow-md: 0 4px 12px rgba(242, 101, 34, 0.15);
  --color-primary-shadow-lg: 0 4px 16px rgba(242, 101, 34, 0.15);
  --color-primary-focus: 0 0 0 3px rgba(242, 101, 34, 0.15);
  --color-primary-focus-ring: 0 0 0 3px rgba(242, 101, 34, 0.25);
  --color-primary-focus-glow: 0 0 0 4px rgba(242, 101, 34, 0.25);

  /* Secondary Brand Colors (Navy) */
  --color-secondary-500: #1E3A5F;
  --color-secondary-400: #2A4F7F;
  --color-secondary-600: #152B47;
  --color-secondary-bg: rgba(30, 58, 95, 0.1);
  --color-secondary-bg-hover: rgba(30, 58, 95, 0.08);
  --color-secondary-shadow-sm: 0 2px 8px rgba(30, 58, 95, 0.3);
  --color-secondary-shadow-lg: 0 4px 16px rgba(30, 58, 95, 0.4);
  --color-secondary-focus-ring: 0 0 0 3px rgba(30, 58, 95, 0.25);

  /* Gray/Neutral Colors */
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  --color-gray-950: #0a0f1a;

  /* Success Colors (Green) */
  --color-success-500: #10B981;
  --color-success-400: #34D399;
  --color-success-600: #059669;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  --color-success-bg-subtle: rgba(16, 185, 129, 0.08);
  --color-success-focus: 0 0 0 3px rgba(16, 185, 129, 0.15);

  /* Warning Colors (Yellow/Amber) */
  --color-warning-500: #F59E0B;
  --color-warning-400: #FBBF24;
  --color-warning-600: #D97706;
  --color-warning-bg: rgba(245, 158, 11, 0.1);
  --color-warning-bg-subtle: rgba(245, 158, 11, 0.08);

  /* Error/Danger Colors (Red) */
  --color-error-500: #EF4444;
  --color-error-400: #F87171;
  --color-error-600: #DC2626;
  --color-error-bg: rgba(239, 68, 68, 0.1);
  --color-error-bg-subtle: rgba(239, 68, 68, 0.08);
  --color-error-border: rgba(239, 68, 68, 0.2);
  --color-error-shadow-sm: 0 2px 8px rgba(239, 68, 68, 0.3);
  --color-error-shadow-lg: 0 4px 16px rgba(239, 68, 68, 0.4);
  --color-error-focus: 0 0 0 3px rgba(239, 68, 68, 0.15);
  --color-error-focus-ring: 0 0 0 3px rgba(239, 68, 68, 0.25);

  /* Info Colors (Blue) */
  --color-info-500: #3B82F6;
  --color-info-400: #60A5FA;
  --color-info-600: #2563EB;
  --color-info-bg: rgba(59, 130, 246, 0.1);
  --color-info-bg-subtle: rgba(59, 130, 246, 0.08);
  --color-info-border: rgba(59, 130, 246, 0.2);

  /* Additional Semantic Colors */
  --color-purple-500: #8B5CF6;
  --color-purple-400: #A78BFA;
  --color-purple-600: #7C3AED;
  --color-purple-bg: rgba(139, 92, 246, 0.1);

  --color-pink-500: #EC4899;
  --color-pink-600: #DB2777;
  --color-pink-bg: rgba(236, 72, 153, 0.1);

  --color-cyan-500: #06B6D4;
  --color-cyan-bg: rgba(6, 182, 212, 0.1);

  --color-indigo-500: #6366F1;

  /* Surface Colors */
  --color-surface-primary: #ffffff;
  --color-surface-secondary: #f8fafc;
  --color-surface-tertiary: #f1f5f9;
  --color-surface-hover: #f8fafc;
  --color-surface-overlay: rgba(15, 23, 42, 0.6);
  --color-surface-overlay-dark: rgba(0, 0, 0, 0.5);
  --color-surface-overlay-light: rgba(0, 0, 0, 0.75);

  /* Text Colors */
  --color-text-primary: #0f172a;
  --color-text-secondary: #334155;
  --color-text-muted: #64748b;
  --color-text-inverse: #ffffff;
  --color-text-on-primary: #ffffff;
  --color-text-on-dark: #ffffff;

  /* Border Colors */
  --color-border-light: rgba(0, 0, 0, 0.08);
  --color-border-medium: rgba(0, 0, 0, 0.12);
  --color-border-print: #ddd;

  /* Legacy Aliases (for backward compatibility) */
  --admin-accent: var(--color-primary-500);
  --admin-accent-light: var(--color-primary-400);
  --admin-accent-dark: var(--color-primary-600);
  --admin-accent-glow: var(--color-primary-glow);

  --admin-blue: var(--color-info-500);
  --admin-green: var(--color-success-500);
  --admin-purple: var(--color-purple-500);
  --admin-yellow: var(--color-warning-500);
  --admin-red: var(--color-error-500);
  --admin-pink: var(--color-pink-500);
  --admin-cyan: var(--color-cyan-500);
  --admin-indigo: var(--color-indigo-500);

  /* Light Theme Surface Variables */
  --admin-bg: var(--color-gray-50);
  --admin-bg-subtle: var(--color-gray-100);
  --admin-surface: var(--color-surface-primary);
  --admin-surface-hover: var(--color-surface-secondary);
  --admin-border: var(--color-border-light);
  --admin-border-strong: var(--color-border-medium);
  --admin-text: var(--color-text-primary);
  --admin-text-secondary: var(--color-text-secondary);
  --admin-text-muted: var(--color-text-muted);
  --admin-overlay: var(--color-surface-overlay);

  /* CSS Variable Aliases (for backward compatibility with inline styles) */
  --bg-primary: var(--admin-surface);
  --bg-secondary: var(--admin-bg-subtle);
  --bg-tertiary: var(--admin-bg);
  --bg-hover: var(--admin-surface-hover);
  --border-color: var(--admin-border);
  --border-light: var(--admin-border);
  --border-medium: var(--admin-border-strong);
  --accent-primary: var(--admin-accent);
  --accent-light: var(--admin-accent-light);
  --accent-dark: var(--admin-accent-dark);
  --text-primary: var(--admin-text);
  --text-secondary: var(--admin-text-secondary);
  --text-muted: var(--admin-text-muted);
  --color-success: var(--admin-green);
  --color-warning: var(--admin-yellow);
  --color-error: var(--admin-red);
  --color-info: var(--admin-blue);
  --bg-card: var(--admin-surface);
  --border-primary: var(--admin-border);
  --border-subtle: var(--admin-border);
  --error: var(--admin-red);

  /* Layout */
  --admin-sidebar-width: 260px;
  --admin-sidebar-collapsed: 72px;
  --admin-topbar-height: 64px;

  /* Legacy Radii (mapped to new scale for backward compatibility) */
  --admin-radius-xs: var(--radius-sm);
  --admin-radius-sm: var(--radius-md);
  --admin-radius-md: var(--radius-lg);
  --admin-radius-lg: var(--radius-xl);
  --admin-radius-xl: var(--radius-2xl);
  --admin-radius-full: var(--radius-full);

  /* Legacy Shadows (mapped to new scale for backward compatibility) */
  --admin-shadow-xs: var(--shadow-sm);
  --admin-shadow-sm: var(--shadow-sm);
  --admin-shadow-md: var(--shadow-md);
  --admin-shadow-lg: var(--shadow-lg);
  --admin-shadow-xl: var(--shadow-xl);
  --admin-shadow-glow: 0 0 40px var(--admin-accent-glow);

  /* Transitions */
  --admin-transition-fast: 0.1s ease;
  --admin-transition-normal: 0.2s ease;
  --admin-transition-slow: 0.3s ease;
  --admin-transition-spring: 0.2s ease;

  /* Z-Index Scale (unified across platform) */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-popover: 500;
  --z-toast: 600;
  --z-command: 700;
  --z-max: 9999;

  /* ===========================================
     ICON SIZE SCALE
     Standardized 6-size scale for consistent icons
     =========================================== */
  --icon-xs: 0.75rem;   /* 12px - inline text icons, badges */
  --icon-sm: 1rem;      /* 16px - button icons, small UI */
  --icon-md: 1.25rem;   /* 20px - navigation, standard icons */
  --icon-lg: 1.5rem;    /* 24px - headers, emphasis */
  --icon-xl: 1.5rem;    /* 24px - feature icons, cards */
  --icon-2xl: 2rem;     /* 32px - empty states, hero icons */

  /* ===========================================
     RESPONSIVE BREAKPOINTS
     Mobile-first approach with consistent values
     Use max-width with .98px to prevent 1px gaps
     =========================================== */
  /* xs: 0-479px (default mobile styles) */
  /* sm: 480px+ (small tablets, large phones) */
  /* md: 768px+ (tablets) */
  /* lg: 1024px+ (laptops, small desktops) */
  /* xl: 1280px+ (desktops) */
  /* 2xl: 1536px+ (large desktops) */
  --breakpoint-sm: 480px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* Dark Theme */
[data-theme="dark"] {
  /* Dark theme surface overrides */
  --color-surface-primary: var(--color-gray-800);
  --color-surface-secondary: var(--color-gray-700);
  --color-surface-tertiary: var(--color-gray-900);
  --color-surface-hover: var(--color-gray-700);
  --color-surface-overlay: var(--color-surface-overlay-light);

  /* Dark theme text overrides */
  --color-text-primary: var(--color-gray-50);
  --color-text-secondary: var(--color-gray-200);
  --color-text-muted: var(--color-gray-400);

  /* Dark theme border overrides */
  --color-border-light: rgba(255, 255, 255, 0.08);
  --color-border-medium: rgba(255, 255, 255, 0.12);

  /* Legacy dark theme aliases — navy-tinted */
  --admin-bg: #0a0f1a;
  --admin-bg-subtle: #0f1629;
  --admin-bg-hover: #151d35;
  --admin-surface: #131b30;
  --admin-surface-hover: #1a2440;
  --admin-border: rgba(255, 255, 255, 0.10);
  --admin-border-strong: rgba(255, 255, 255, 0.14);
  --admin-text: var(--color-text-primary);
  --admin-text-secondary: var(--color-text-secondary);
  --admin-text-muted: var(--color-text-muted);
  --admin-overlay: var(--color-surface-overlay);

  /* Dark theme aliases (inherit from admin vars) */
  --bg-primary: var(--admin-surface);
  --bg-secondary: var(--admin-bg-subtle);
  --bg-tertiary: var(--admin-bg);
  --bg-hover: var(--admin-surface-hover);
  --border-color: var(--admin-border);
  --border-light: var(--admin-border);
  --border-medium: var(--admin-border-strong);
  --text-primary: var(--admin-text);
  --text-secondary: var(--admin-text-secondary);
  --text-muted: var(--admin-text-muted);
  --bg-card: var(--admin-surface);
  --border-primary: var(--admin-border);
  --border-subtle: var(--admin-border);
  --error: var(--admin-red);
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  background: var(--admin-bg);
  color: var(--admin-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  /* Variable font features */
  font-optical-sizing: var(--font-optical-sizing);
  font-feature-settings: 'liga' 1, 'calt' 1;
}

/* ============================================
   LAZY LOADING - Performance Optimization
   Phase 13: Native lazy loading with CSS fallback
   ============================================ */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded,
img[loading="lazy"]:not([src=""]) {
  opacity: 1;
}

/* Prevent layout shift for images with dimensions */
img[width][height] {
  aspect-ratio: attr(width) / attr(height);
}

/* Placeholder skeleton for lazy images */
.lazy-image-container {
  position: relative;
  background: linear-gradient(
    90deg,
    var(--admin-bg-subtle) 0%,
    var(--admin-surface) 50%,
    var(--admin-bg-subtle) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.lazy-image-container img[loading="lazy"] {
  position: relative;
  z-index: 1;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ============================================
   FLUID TYPOGRAPHY - Headings
   Phase 13 (2026 Design Trends)
   Uses variable font with tighter tracking at larger sizes
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  /* Tighter tracking at larger sizes for better readability */
  letter-spacing: -0.02em;
}

h1, .h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
}

h2, .h2 {
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.025em;
}

h3, .h3 {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: -0.015em;
}

h4, .h4 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
}

h5, .h5 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-normal);
}

h6, .h6 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  line-height: var(--leading-normal);
}

/* ============================================
   FOCUS STYLES - WCAG 2.1 AA Compliant
   ============================================ */

/* Default focus outline for all elements */
*:focus {
  outline: 2px solid var(--admin-accent);
  outline-offset: 2px;
}

/* Only show focus ring on keyboard navigation */
*:focus:not(:focus-visible) {
  outline: none;
}

/* Enhanced focus-visible states */
*:focus-visible {
  outline: 2px solid var(--admin-accent);
  outline-offset: 2px;
}

/* Interactive elements get enhanced focus ring with glow */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
[tabindex]:focus-visible:not([tabindex="-1"]) {
  outline: 2px solid var(--admin-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--admin-accent-glow);
}

/* High contrast focus for dark backgrounds */
[data-theme="dark"] button:focus-visible,
[data-theme="dark"] a:focus-visible,
[data-theme="dark"] [role="button"]:focus-visible {
  outline-color: var(--admin-accent-light);
  box-shadow: var(--color-primary-focus-glow);
}

/* Card and interactive container focus */
.card:focus-visible,
.admin-card:focus-visible,
.nav-item:focus-visible,
.dropdown-item:focus-visible {
  outline: 2px solid var(--admin-accent);
  outline-offset: 2px;
}

/* Form input focus enhancements */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  border-color: var(--admin-accent);
  box-shadow: var(--color-primary-focus);
}

/* Remove default outlines but maintain accessibility */
button,
a,
input,
select,
textarea {
  outline-offset: 2px;
}

::selection {
  background: var(--admin-accent);
  color: white;
}

/* Skip link for keyboard navigation */
.skip-link,
.skip-to-content,
.skip-nav-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: var(--z-max);
  padding: 0.75rem 1.25rem;
  background: var(--admin-accent);
  color: white;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 var(--admin-radius-md) 0;
}

.skip-link:focus,
.skip-to-content:focus,
.skip-nav-link:focus {
  position: fixed;
  left: 0;
  top: 0;
  width: auto;
  height: auto;
  overflow: visible;
  outline: 3px solid white;
  outline-offset: 2px;
}

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

/* ============================================
   LAYOUT
   ============================================ */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--admin-sidebar-width);
  background: var(--admin-surface);
  border-right: 1px solid var(--admin-border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sticky);
  transition: transform var(--admin-transition-slow), width var(--admin-transition-slow);
}

@media (max-width: 1023.98px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }
  .admin-sidebar.open {
    transform: translateX(0);
    box-shadow: var(--admin-shadow-xl);
  }
}

.admin-main {
  flex: 1;
  margin-left: var(--admin-sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--admin-transition-slow);
}

@media (max-width: 1023.98px) {
  .admin-main {
    margin-left: 0;
  }
}

/* ============================================
   SIDEBAR
   Updated to use design system spacing tokens
   ============================================ */
.sidebar-header {
  padding: var(--space-6) var(--space-5);
  border-bottom: 1px solid var(--admin-border);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  transition: all var(--admin-transition-fast);
  padding: var(--space-2);
  border-radius: var(--admin-radius-md);
}

.sidebar-logo:hover {
  background: var(--admin-bg-subtle);
}

.sidebar-logo .logo-image {
  height: 40px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  transition: transform var(--admin-transition-fast);
}

.sidebar-logo:hover .logo-image {
  /* no transform */
}

.sidebar-logo .logo-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.sidebar-logo .logo-badge {
  font-family: var(--font-display, var(--font-sans));
  font-size: var(--text-lg);
  font-weight: var(--font-extrabold);
  color: var(--color-primary-500);
  letter-spacing: -0.02em;
  margin-left: auto;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--admin-border) transparent;
}

.sidebar-nav::-webkit-scrollbar {
  width: var(--space-1);
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--admin-border);
  border-radius: var(--radius-sm);
}

/* Sidebar Search */
.sidebar-search {
  padding: var(--space-3) var(--space-4);
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--admin-bg-subtle);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  color: var(--admin-text-muted);
  font-size: var(--text-sm);
  transition: border-color 0.15s ease;
}

.search-trigger:hover {
  border-color: var(--admin-border-strong);
}

.search-trigger kbd {
  margin-left: auto;
  background: var(--admin-surface);
  padding: 1px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-family: inherit;
  border: 1px solid var(--admin-border);
  color: var(--admin-text-muted);
}

.nav-section {
  padding: 0 var(--space-3);
  margin-bottom: var(--space-4);
}

.nav-section-title {
  font-size: 0.65rem;
  font-weight: var(--font-semibold);
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 var(--space-3);
  margin-bottom: var(--space-1);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  color: var(--admin-text-muted);
  text-decoration: none;
  border-radius: var(--admin-radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--admin-transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--admin-accent);
  transform: scaleY(0);
  transition: transform var(--admin-transition-normal);
  border-radius: 0 3px 3px 0;
}

.nav-item:hover {
  background: var(--admin-bg-subtle);
  color: var(--admin-text);
}

.nav-item.active {
  background: var(--color-primary-bg-subtle);
  color: var(--admin-accent);
}

.nav-item.active::before {
  transform: scaleY(1);
}

.nav-item svg {
  width: var(--icon-md);
  height: var(--icon-md);
  flex-shrink: 0;
  transition: transform var(--admin-transition-fast);
  color: currentColor;
}

.nav-item:hover svg {
  /* no transform */
}

.nav-item .badge {
  margin-left: auto;
  background: var(--admin-accent);
  color: white;
  font-size: 0.65rem;
  font-weight: var(--font-bold);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--admin-radius-full);
  min-width: var(--space-5);
  text-align: center;
}

.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--admin-border);
  background: transparent;
}

.user-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--admin-radius-lg);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.user-card::before {
  display: none;
}

.user-card:hover {
  background: var(--admin-bg-subtle);
  border-color: var(--admin-border-strong);
}

.user-card:hover::before {
  transform: scaleX(1);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--admin-radius-full);
  background: var(--admin-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--admin-text-secondary);
  font-weight: 600;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.user-avatar::before {
  display: none;
}

.user-card:hover .user-avatar {
  /* no transform or glow */
}

.user-card:hover .user-avatar::before {
  opacity: 1;
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-family: var(--font-display, var(--font-sans));
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--admin-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
  letter-spacing: -0.01em;
}

.user-role {
  font-size: var(--text-xs);
  color: var(--admin-text-muted);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.user-menu-btn {
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  color: var(--admin-text-muted);
  transition: all var(--admin-transition-fast);
  flex-shrink: 0;
}

.user-menu-btn:hover {
  background: var(--admin-bg-subtle);
  border-color: var(--admin-border-strong);
  color: var(--admin-text);
}

.user-menu-btn svg {
  width: 18px;
  height: 18px;
}

.user-dropdown {
  position: absolute;
  bottom: calc(100% + var(--space-2));
  left: var(--space-4);
  right: var(--space-4);
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-lg);
  box-shadow: 
    0 10px 25px -5px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--admin-transition-normal);
  z-index: var(--z-dropdown);
  min-width: 200px;
}

.user-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* User status indicator */
.user-status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--admin-surface);
}

.user-status-dot.online { background: #22c55e; }
.user-status-dot.away { background: #f59e0b; }
.user-status-dot.offline { background: #94a3b8; }

.user-avatar {
  position: relative;
}

/* Role badge */
.role-badge {
  font-size: 0.65rem;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.role-badge.super-admin {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
}

.role-badge.admin {
  background: rgba(242, 101, 34, 0.15);
  color: var(--admin-accent);
}

/* Dropdown profile section */
.dropdown-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  margin-bottom: 4px;
}

.dropdown-profile-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--admin-bg-subtle);
  color: var(--admin-accent);
  font-weight: 600;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.dropdown-profile-name {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--admin-text);
}

.dropdown-profile-email {
  font-size: 0.75rem;
  color: var(--admin-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 180px;
}

.dropdown-version {
  padding: 6px 8px;
  font-size: 0.65rem;
  color: var(--admin-text-muted);
  text-align: center;
  opacity: 0.6;
}

/* ============================================
   TOPBAR
   ============================================ */
.admin-topbar {
  position: sticky;
  top: 0;
  height: var(--admin-topbar-height);
  background: var(--admin-surface);
  border-bottom: 1px solid var(--admin-border);
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: var(--z-sticky);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: transform var(--admin-transition-fast);
  margin-right: var(--space-2);
}

.topbar-logo:hover {
  opacity: 0.8;
}

.topbar-logo-image {
  height: 32px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

@media (max-width: 768px) {
  .topbar-logo {
    display: none;
  }
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  background: none;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  color: var(--admin-text-muted);
  transition: all var(--admin-transition-fast);
}

.menu-toggle:hover {
  background: var(--admin-bg-subtle);
  color: var(--admin-text);
}

@media (max-width: 1023.98px) {
  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

.page-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--admin-text);
}

.page-breadcrumb {
  font-size: var(--text-sm);
  color: var(--admin-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-breadcrumb a {
  color: var(--admin-text-muted);
  text-decoration: none;
  transition: color var(--admin-transition-fast);
}

.page-breadcrumb a:hover {
  color: var(--admin-accent);
}

/* Breadcrumbs (rendered by AdminCore.renderBreadcrumbs) */
.breadcrumbs ol {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  font-size: var(--text-sm);
}
.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--admin-text-muted);
}
.breadcrumbs li a {
  color: var(--admin-text-muted);
  text-decoration: none;
  transition: color var(--admin-transition-fast);
}
.breadcrumbs li a:hover { color: var(--admin-accent); }
.breadcrumbs li [aria-current="page"] {
  color: var(--admin-text);
  font-weight: var(--font-medium);
}
.breadcrumbs li svg,
.breadcrumbs li [data-lucide] {
  color: var(--admin-border-strong);
  flex-shrink: 0;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.topbar-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--admin-bg-subtle);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
  color: var(--admin-text-muted);
  font-size: var(--text-sm);
}

.topbar-search:hover {
  border-color: var(--admin-border-strong);
}

.topbar-search kbd {
  background: var(--admin-surface);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--admin-radius-xs);
  font-size: var(--text-xs);
  font-family: inherit;
  border: 1px solid var(--admin-border);
}

.topbar-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  background: none;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  color: var(--admin-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--admin-transition-fast);
  position: relative;
}

.topbar-btn:hover {
  background: var(--admin-bg-subtle);
  color: var(--admin-text);
  border-color: var(--admin-border-strong);
}

.topbar-btn svg {
  width: var(--icon-md);
  height: var(--icon-md);
  color: currentColor;
}

.topbar-btn .notification-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: var(--admin-red);
  border-radius: var(--admin-radius-full);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

/* ============================================
   MODULE NAVIGATION (Secondary Nav)
   Persistent horizontal navigation within modules
   ============================================ */
.module-nav {
  background: var(--admin-surface);
  border-bottom: 1px solid var(--admin-border);
  padding: 0 var(--space-6);
  position: sticky;
  top: var(--admin-topbar-height);
  z-index: calc(var(--z-sticky) - 1);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.module-nav::-webkit-scrollbar {
  display: none;
}

.module-nav-inner {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  min-height: 48px;
  max-width: 1400px;
  margin: 0 auto;
}

.module-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--admin-text-muted);
  text-decoration: none;
  border-radius: var(--admin-radius-md);
  white-space: nowrap;
  transition: all var(--admin-transition-fast);
  position: relative;
}

.module-nav-item:hover {
  color: var(--admin-text);
  background: var(--admin-bg-subtle);
}

.module-nav-item.active {
  color: var(--admin-accent);
  background: rgba(242, 101, 34, 0.1);
}

.module-nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -9px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 16px);
  height: 2px;
  background: var(--admin-accent);
  border-radius: 1px;
}

.module-nav-item svg,
.module-nav-item [data-lucide],
.module-nav-item .icon-sm {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Lucide icon size classes */
.icon-xs { width: 12px; height: 12px; }
.icon-sm { width: 16px; height: 16px; }
.icon-md { width: 20px; height: 20px; }
.icon-lg { width: 24px; height: 24px; }
.icon-xl { width: 32px; height: 32px; }

.module-nav-divider {
  width: 1px;
  height: 24px;
  background: var(--admin-border);
  margin: 0 var(--space-2);
  flex-shrink: 0;
}

.module-nav-group {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--admin-text-muted);
  padding: 0 var(--space-2);
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

/* Mobile responsive */
@media (max-width: 767.98px) {
  .module-nav {
    padding: 0 var(--space-4);
  }

  .module-nav-item {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }

  .module-nav-item svg,
  .module-nav-item [data-lucide] {
    width: 14px;
    height: 14px;
  }
}

/* Page Tabs (internal tab navigation) */
.page-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--admin-bg-subtle);
  border-radius: var(--admin-radius-lg, 12px);
  margin-bottom: 1.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: var(--text-sm, 0.875rem);
  font-weight: 500;
  color: var(--admin-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--admin-radius-md, 8px);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.page-tab:hover {
  color: var(--admin-text);
  background: var(--admin-bg-hover);
}

.page-tab.active {
  color: var(--admin-text);
  background: var(--admin-surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.page-tab [data-lucide] {
  width: 16px;
  height: 16px;
}

/* ============================================
   CONTENT
   ============================================ */
.admin-content {
  flex: 1;
  padding: var(--space-6);
  animation: fadeInUp 0.4s ease;
}

.admin-container {
  max-width: 1400px;
  margin: 0 auto;
}

/* ============================================
   STATS GRID
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-lg);
  padding: var(--space-5);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  transition: all var(--admin-transition-normal);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  display: none;
}

.stat-card:hover {
  border-color: var(--admin-border-strong);
}

.stat-icon {
  width: var(--icon-xl);
  height: var(--icon-xl);
  border-radius: var(--admin-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg,
.stat-icon [data-lucide] {
  width: var(--icon-lg);
  height: var(--icon-lg);
  color: currentColor;
}

/* Staggered entrance animation for stat cards */
.stat-card {
  animation: fadeInUp 0.4s ease both;
}

.stat-card:nth-child(1) { animation-delay: 0.05s; }
.stat-card:nth-child(2) { animation-delay: 0.1s; }
.stat-card:nth-child(3) { animation-delay: 0.15s; }
.stat-card:nth-child(4) { animation-delay: 0.2s; }

@media (prefers-reduced-motion: reduce) {
  .admin-content,
  .stat-card,
  .empty-state {
    animation: none !important;
  }
  .stat-card:hover {
    transform: none;
  }
}

.stat-icon.blue { background: var(--color-info-bg); color: var(--admin-blue); --stat-color: var(--admin-blue); }
.stat-icon.green { background: var(--color-success-bg); color: var(--admin-green); --stat-color: var(--admin-green); }
.stat-icon.purple { background: var(--color-purple-bg); color: var(--admin-purple); --stat-color: var(--admin-purple); }
.stat-icon.orange { background: var(--color-primary-bg); color: var(--admin-accent); --stat-color: var(--admin-accent); }
.stat-icon.yellow { background: var(--color-warning-bg); color: var(--admin-yellow); --stat-color: var(--admin-yellow); }
.stat-icon.red { background: var(--color-error-bg); color: var(--admin-red); --stat-color: var(--admin-red); }
.stat-icon.cyan { background: var(--color-cyan-bg); color: var(--admin-cyan); --stat-color: var(--admin-cyan); }

.stat-info {
  flex: 1;
  min-width: 0;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--admin-text);
  margin-bottom: 0.125rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--admin-text-muted);
  font-weight: 500;
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.375rem;
  padding: 0.125rem 0.375rem;
  border-radius: var(--admin-radius-sm);
}

.stat-change.up {
  color: var(--admin-green);
  background: var(--color-success-bg);
}

.stat-change.down {
  color: var(--admin-red);
  background: var(--color-error-bg);
}

.stat-sparkline {
  height: 32px;
  margin-top: 0.5rem;
}

/* ============================================
   CARDS
   Updated to use design system tokens
   ============================================ */
.admin-card {
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--space-6);
  transition: box-shadow var(--admin-transition-normal);
}

.admin-card:hover {
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.card-header h2 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--admin-text);
}

.card-header h2 svg {
  width: var(--space-5);
  height: var(--space-5);
  color: var(--admin-accent);
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--admin-border);
  background: var(--admin-bg-subtle);
}

/* ============================================
   TABLES
   ============================================ */
.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--admin-border);
}

.admin-table th {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--admin-bg-subtle);
  position: sticky;
  top: 0;
}

.admin-table tbody tr {
  transition: background var(--admin-transition-fast);
}

.admin-table tbody tr:hover {
  background: var(--admin-surface-hover);
}

.admin-table .actions {
  display: flex;
  gap: 0.375rem;
  opacity: 0;
  transition: opacity var(--admin-transition-fast);
}

.admin-table tbody tr:hover .actions {
  opacity: 1;
}

/* ============================================
   BUTTONS
   Updated to use design system tokens
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  display: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-primary {
  background: var(--admin-accent);
  color: var(--color-text-on-primary);
}

.btn-primary:hover {
  background: var(--admin-accent-dark);
}

.btn-secondary {
  background: var(--admin-bg-subtle);
  color: var(--admin-text);
  border: 1px solid var(--admin-border);
}

.btn-secondary:hover {
  background: var(--admin-surface-hover);
  border-color: var(--admin-border-strong);
}

.btn-danger {
  background: linear-gradient(135deg, var(--admin-red), var(--color-error-600));
  color: var(--color-text-on-primary);
  box-shadow: var(--color-error-shadow-sm);
}

.btn-danger:hover {
  box-shadow: var(--color-error-shadow-lg);
}

.btn-ghost {
  background: transparent;
  color: var(--admin-text-muted);
}

.btn-ghost:hover {
  background: var(--admin-bg-subtle);
  color: var(--admin-text);
}

.btn-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
}

.btn:disabled,
.btn:disabled:hover,
.btn:disabled:active,
.btn.btn-primary:disabled:hover,
.btn.btn-secondary:disabled:hover,
.btn.btn-danger:disabled:hover,
.btn.btn-ghost:disabled:hover {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn svg {
  width: var(--icon-sm);
  height: var(--icon-sm);
  flex-shrink: 0;
  color: currentColor;
}

.btn-loading {
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  width: var(--icon-sm);
  height: var(--icon-sm);
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: var(--admin-radius-full);
  animation: spin 0.6s linear infinite;
}

/* ============================================
   FORMS
   Updated to use design system tokens
   ============================================ */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--admin-text);
  margin-bottom: var(--space-2);
}

.form-label.required::after {
  content: ' *';
  color: var(--admin-red);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-family: inherit;
  color: var(--admin-text);
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--radius-md);
  transition: all var(--admin-transition-fast);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--admin-border-strong);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--admin-accent);
  box-shadow: var(--color-primary-focus);
}

.form-input::placeholder {
  color: var(--admin-text-muted);
}

.form-input.error {
  border-color: var(--admin-red);
}

.form-input.error:focus {
  box-shadow: var(--color-error-focus);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--admin-text-muted);
  margin-top: 0.375rem;
}

.form-error {
  font-size: 0.75rem;
  color: var(--admin-red);
  margin-top: 0.375rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 479.98px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Input with Icon */
.input-with-icon {
  position: relative;
}

.input-with-icon .form-input {
  padding-left: 2.75rem;
}

.input-with-icon svg {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  width: var(--icon-sm);
  height: var(--icon-sm);
  color: var(--admin-text-muted);
  pointer-events: none;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--admin-radius-full);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge-primary { background: var(--color-primary-bg); color: var(--admin-accent); }
.badge-success { background: var(--color-success-bg); color: var(--admin-green); }
.badge-warning { background: var(--color-warning-bg); color: var(--admin-yellow); }
.badge-danger { background: var(--color-error-bg); color: var(--admin-red); }
.badge-info { background: var(--color-info-bg); color: var(--admin-blue); }
.badge-purple { background: var(--color-purple-bg); color: var(--admin-purple); }

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--admin-radius-full);
  background: currentColor;
}

/* ============================================
   COMMAND PALETTE
   ============================================ */
.command-palette-overlay {
  position: fixed;
  inset: 0;
  background: var(--admin-overlay);
  backdrop-filter: blur(8px);
  z-index: var(--z-command);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--admin-transition-normal);
}

.command-palette-overlay.open {
  opacity: 1;
  visibility: visible;
}

.command-palette {
  width: 100%;
  max-width: 640px;
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-xl);
  box-shadow: var(--admin-shadow-xl);
  overflow: hidden;
  transform: scale(0.95) translateY(-10px);
  transition: transform var(--admin-transition-spring);
}

.command-palette-overlay.open .command-palette {
  transform: scale(1) translateY(0);
}

.command-input-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--admin-border);
}

.command-input-wrapper svg {
  width: var(--icon-md);
  height: var(--icon-md);
  color: var(--admin-text-muted);
  flex-shrink: 0;
}

.command-input {
  flex: 1;
  border: none;
  background: none;
  font-size: 1rem;
  color: var(--admin-text);
  outline: none;
}

.command-input::placeholder {
  color: var(--admin-text-muted);
}

.command-results {
  max-height: 400px;
  overflow-y: auto;
  padding: var(--space-2);
}

.command-group {
  padding: var(--space-2) 0;
}

.command-group-title {
  font-size: 0.65rem;
  font-weight: var(--font-bold);
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-2) var(--space-3);
}

.command-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
}

.command-item:hover,
.command-item.selected {
  background: var(--admin-bg-subtle);
}

.command-item-icon {
  width: calc(var(--icon-sm) * 2.25);
  height: calc(var(--icon-sm) * 2.25);
  border-radius: var(--admin-radius-md);
  background: var(--admin-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.command-item-icon svg {
  width: var(--icon-sm);
  height: var(--icon-sm);
  color: var(--admin-text-muted);
}

.command-item-content {
  flex: 1;
  min-width: 0;
}

.command-item-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--admin-text);
}

.command-item-desc {
  font-size: 0.75rem;
  color: var(--admin-text-muted);
  margin-top: 0.125rem;
}

.command-item-shortcut {
  display: flex;
  gap: 0.25rem;
}

.command-item-shortcut kbd {
  padding: 0.25rem 0.5rem;
  font-size: 0.7rem;
  font-family: inherit;
  background: var(--admin-bg-subtle);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-xs);
  color: var(--admin-text-muted);
}

.command-footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--admin-border);
  background: var(--admin-bg-subtle);
  font-size: var(--text-xs);
  color: var(--admin-text-muted);
}

.command-footer span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-3);
  max-width: 400px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-lg);
  box-shadow: var(--admin-shadow-lg);
  animation: slideInRight 0.3s var(--admin-transition-spring);
}

.toast.removing {
  animation: slideOutRight 0.2s ease forwards;
}

.toast-icon {
  width: var(--icon-md);
  height: var(--icon-md);
  flex-shrink: 0;
  margin-top: 0.125rem;
  color: currentColor;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--admin-text);
  margin-bottom: 0.125rem;
}

.toast-message {
  font-size: 0.8rem;
  color: var(--admin-text-muted);
}

.toast-close {
  background: none;
  border: none;
  padding: 0.25rem;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--admin-text-muted);
  transition: color var(--admin-transition-fast);
}

.toast-close:hover {
  color: var(--admin-text);
}

.toast-success .toast-icon { color: var(--admin-green); }
.toast-error .toast-icon { color: var(--admin-red); }
.toast-warning .toast-icon { color: var(--admin-yellow); }
.toast-info .toast-icon { color: var(--admin-blue); }

.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--admin-accent);
  border-radius: 0 0 var(--admin-radius-lg) var(--admin-radius-lg);
  animation: shrink linear forwards;
}

@keyframes shrink {
  from { width: 100%; }
  to { width: 0%; }
}

/* ============================================
   UNDO TOAST - Phase 8 UX Safety
   Enhanced toast for destructive actions with undo
   ============================================ */
.toast-undo {
  padding-right: var(--space-2);
}

.toast-undo .toast-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
}

.toast-undo .toast-message {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--admin-text);
}

.toast-undo-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: 1px solid var(--admin-yellow);
  border-radius: var(--radius-md);
  color: var(--admin-yellow);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
  white-space: nowrap;
}

.toast-undo-btn:hover {
  background: var(--admin-yellow);
  color: var(--color-gray-900);
}

.toast-undo-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.toast-undo-btn .undo-countdown {
  font-weight: var(--font-normal);
  opacity: 0.8;
}

.toast-undo-btn .btn-spinner {
  width: 14px;
  height: 14px;
  border-width: 2px;
}

/* ============================================
   DANGER ACTION BUTTON - Phase 8 UX Safety
   Enhanced styling for destructive action buttons
   ============================================ */
.btn-danger-outline {
  background: transparent;
  color: var(--admin-red);
  border: 1px solid var(--admin-red);
  box-shadow: none;
}

.btn-danger-outline:hover {
  background: var(--color-error-bg);
  border-color: var(--admin-red);
  box-shadow: var(--color-error-focus);
}

.btn-danger-outline svg {
  color: var(--admin-red);
}

.btn-danger-outline.btn-sm {
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  gap: var(--space-1);
}

.btn-danger-outline.btn-sm svg {
  width: 12px;
  height: 12px;
}

/* Delete button with warning icon */
.btn-delete {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  color: var(--admin-text-muted);
  border: 1px solid var(--admin-border);
  transition: all var(--admin-transition-fast);
}

.btn-delete:hover {
  background: var(--color-error-bg);
  color: var(--admin-red);
  border-color: var(--admin-red);
}

.btn-delete:hover svg {
  color: var(--admin-red);
}

/* Confirmation modal danger styling */
.modal-danger .modal-header {
  background: var(--color-error-bg);
  border-bottom: 1px solid var(--color-error-border);
}

.modal-danger .modal-header h3 {
  color: var(--admin-red);
}

/* Warning callout in modals */
.warning-callout {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-error-bg-subtle);
  border: 1px solid var(--color-error-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.warning-callout svg {
  flex-shrink: 0;
  color: var(--admin-red);
}

.warning-callout p {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--admin-text-muted);
  line-height: var(--leading-relaxed);
}

.warning-callout strong {
  color: var(--admin-text);
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--admin-overlay);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--admin-transition-normal);
}

.modal-overlay.open,
.modal-overlay.show,
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--admin-surface);
  border-radius: var(--admin-radius-xl);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(20px);
  transition: transform var(--admin-transition-spring);
}

.modal-overlay.open .modal,
.modal-overlay.show .modal,
.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-lg { max-width: 700px; }
.modal-xl { max-width: 900px; }
.modal-full { max-width: 95vw; max-height: 95vh; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--admin-border);
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--admin-text);
}

.modal-close {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  color: var(--admin-text-muted);
  transition: all var(--admin-transition-fast);
}

.modal-close:hover {
  background: var(--admin-bg-subtle);
  color: var(--admin-text);
}

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--admin-border);
  background: var(--admin-bg-subtle);
}

/* ============================================
   SLIDE-OVER PANEL
   ============================================ */
.slide-over-overlay {
  position: fixed;
  inset: 0;
  background: var(--admin-overlay);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--admin-transition-normal);
}

.slide-over-overlay.open {
  opacity: 1;
  visibility: visible;
}

.slide-over {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 500px;
  background: var(--admin-surface);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--admin-transition-slow);
}

.slide-over-overlay.open .slide-over {
  transform: translateX(0);
}

.slide-over-lg { max-width: 700px; }
.slide-over-xl { max-width: 900px; }

/* ============================================
   TABS
   ============================================ */
.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--admin-border);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--admin-text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--admin-transition-fast);
  margin-bottom: -1px;
  white-space: nowrap;
}

.tab:hover {
  color: var(--admin-text);
}

.tab.active {
  color: var(--admin-accent);
  border-bottom-color: var(--admin-accent);
}

.tab-content {
  display: none;
  animation: fadeIn 0.2s ease;
}

.tab-content.active {
  display: block;
}

/* ============================================
   SKELETON LOADING
   ============================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--admin-bg-subtle) 0%,
    var(--admin-surface) 50%,
    var(--admin-bg-subtle) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--admin-radius-sm);
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
}

.skeleton-text:last-child {
  width: 70%;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--admin-radius-full);
}

.skeleton-card {
  height: 120px;
  border-radius: var(--admin-radius-lg);
}

/* KPI Card Skeleton */
.skeleton-kpi-value {
  height: 2rem;
  width: 80px;
  margin-bottom: 0.5rem;
}

.skeleton-kpi-label {
  height: 0.85rem;
  width: 100px;
}

/* Chart Loading Placeholder */
.chart-loading-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 200px;
  color: var(--admin-text-muted);
  gap: 1rem;
}

.chart-loading-placeholder svg {
  width: var(--icon-2xl);
  height: var(--icon-2xl);
  opacity: 0.4;
  animation: pulse-fade 2s ease-in-out infinite;
  color: currentColor;
}

.chart-loading-placeholder p {
  font-size: 0.875rem;
  margin: 0;
}

@keyframes pulse-fade {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.2; }
}

/* Table Skeleton Rows */
.skeleton-table-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--admin-border);
}

.skeleton-table-row:last-child {
  border-bottom: none;
}

.skeleton-table-cell {
  height: 1rem;
  border-radius: var(--admin-radius-sm);
}

.skeleton-table-cell.avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--admin-radius-full);
  flex-shrink: 0;
}

.skeleton-table-cell.name {
  width: 120px;
}

.skeleton-table-cell.status {
  width: 80px;
}

.skeleton-table-cell.amount {
  width: 60px;
}

.skeleton-table-cell.date {
  width: 90px;
}

/* Section Loading State */
.section-loading {
  position: relative;
  min-height: 120px;
}

.section-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--admin-bg);
  opacity: 0.7;
  z-index: 1;
}

.section-loading .loading-indicator {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.section-loading .loading-indicator .spinner {
  width: var(--icon-lg);
  height: var(--icon-lg);
  border: 2px solid var(--admin-border);
  border-top-color: var(--admin-accent);
  border-radius: var(--admin-radius-full);
  animation: spin 0.8s linear infinite;
}

.section-loading .loading-indicator span {
  font-size: 0.75rem;
  color: var(--admin-text-muted);
}

/* KPI Card Loading State - hide value, show skeleton */
.kpi-loading .kpi-value,
.kpi-loading .lms-kpi-value,
.kpi-loading .billing-kpi-value,
.kpi-loading .analytics-kpi-value {
  visibility: hidden;
}

.kpi-loading .skeleton-kpi-value {
  position: absolute;
  top: 0;
  left: 0;
}

/* Data Loading Indicator (inline) */
.data-loading {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--admin-text-muted);
}

.data-loading::before {
  content: '';
  width: var(--icon-xs);
  height: var(--icon-xs);
  border: 2px solid var(--admin-border);
  border-top-color: var(--admin-accent);
  border-radius: var(--admin-radius-full);
  animation: spin 0.8s linear infinite;
}

/* shimmer keyframes defined in LAZY LOADING section above */

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
  text-align: center;
  padding: 4rem 1.5rem;
  color: var(--admin-text-muted);
  animation: fadeInUp 0.4s ease;
}

.empty-state-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--admin-bg-subtle) 0%, var(--admin-bg-hover) 100%);
  border-radius: var(--admin-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.empty-state-icon::after {
  display: none;
}

.empty-state-icon svg,
.empty-state-icon [data-lucide] {
  width: 48px;
  height: 48px;
  opacity: 0.5;
  color: var(--admin-accent, #F26522);
}

.empty-state h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--admin-text);
  margin-bottom: 0.5rem;
}

.empty-state p {
  max-width: 360px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

.empty-state .btn {
  margin-top: 0.5rem;
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, var(--admin-bg-subtle) 25%, var(--admin-bg-hover) 50%, var(--admin-bg-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--admin-radius-sm, 6px);
}

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
  border-radius: 4px;
}

.skeleton-text:last-child {
  width: 60%;
}

.skeleton-heading {
  height: 20px;
  width: 40%;
  margin-bottom: 12px;
}

.skeleton-kpi {
  height: 80px;
  border-radius: var(--admin-radius-lg, 12px);
}

.skeleton-row {
  height: 52px;
  margin-bottom: 4px;
  border-radius: var(--admin-radius-sm, 6px);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--admin-radius-lg, 12px);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton { animation: none; }
  .empty-state { animation: none; }
}

/* ============================================
   LOADING OVERLAY
   ============================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--admin-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-max);
}

.loading-spinner {
  width: var(--icon-xl);
  height: var(--icon-xl);
  border: 3px solid var(--admin-border);
  border-top-color: var(--admin-accent);
  border-radius: var(--admin-radius-full);
  animation: spin 0.8s linear infinite;
}

/* ============================================
   SIDEBAR OVERLAY
   ============================================ */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-surface-overlay-dark);
  z-index: calc(var(--z-sticky) - 1);
  backdrop-filter: blur(2px);
}

.sidebar-overlay.show {
  display: block;
}

@media (min-width: 1024px) {
  .sidebar-overlay {
    display: none !important;
  }
}

/* ============================================
   PROGRESS
   ============================================ */
.progress {
  height: 8px;
  background: var(--admin-bg-subtle);
  border-radius: var(--admin-radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--admin-accent), var(--admin-accent-light));
  border-radius: var(--admin-radius-full);
  transition: width var(--admin-transition-slow);
}

.progress-ring {
  transform: rotate(-90deg);
}

.progress-ring-circle {
  transition: stroke-dashoffset var(--admin-transition-slow);
}

/* ============================================
   AVATAR GROUP
   ============================================ */
.avatar-group {
  display: flex;
}

.avatar-group .avatar {
  margin-left: -0.5rem;
  border: 2px solid var(--admin-surface);
}

.avatar-group .avatar:first-child {
  margin-left: 0;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--admin-radius-full);
  background: linear-gradient(135deg, var(--admin-accent), var(--admin-accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
}

.avatar-sm { width: 24px; height: 24px; font-size: 0.65rem; }
.avatar-lg { width: 48px; height: 48px; font-size: 1rem; }
.avatar-xl { width: 64px; height: 64px; font-size: 1.25rem; }

/* ============================================
   DROPDOWN
   ============================================ */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 180px;
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-lg);
  box-shadow: var(--admin-shadow-lg);
  padding: var(--space-2);
  margin-top: var(--space-2);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--admin-transition-normal);
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--admin-text);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  position: relative;
}

.dropdown-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) scaleX(0);
  width: 3px;
  height: 60%;
  background: var(--color-primary-500);
  border-radius: 0 3px 3px 0;
  transition: transform var(--admin-transition-fast);
}

.dropdown-item:hover {
  background: var(--color-primary-bg-subtle);
  color: var(--color-primary-600);
  padding-left: var(--space-5);
}

.dropdown-item:hover::before {
  transform: translateY(-50%) scaleX(1);
}

.dropdown-item.text-danger {
  color: var(--color-error-500);
}

.dropdown-item.text-danger:hover {
  background: var(--color-error-bg);
  color: var(--color-error-600);
}

.dropdown-item svg {
  width: 18px;
  height: 18px;
  color: currentColor;
  flex-shrink: 0;
  transition: transform var(--admin-transition-fast);
}

.dropdown-item:hover svg {
  transform: scale(1.1);
}

.dropdown-divider {
  height: 1px;
  background: var(--admin-border);
  margin: var(--space-2) 0;
  border: none;
}

/* Theme toggle icon switching */
[data-theme="dark"] .dropdown-item .theme-icon-sun {
  display: none;
}

[data-theme="dark"] .dropdown-item .theme-icon-moon {
  display: block !important;
}

[data-theme="light"] .dropdown-item .theme-icon-sun {
  display: block;
}

[data-theme="light"] .dropdown-item .theme-icon-moon {
  display: none !important;
}

/* ============================================
   TOOLTIP
   ============================================ */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-0.5rem);
  padding: 0.5rem 0.75rem;
  background: var(--admin-text);
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--admin-radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--admin-transition-fast);
  pointer-events: none;
  z-index: var(--z-popover);
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-0.75rem);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1023.98px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 479.98px) {
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
}

/* ============================================
   UTILITIES
   ============================================ */
/* .sr-only defined in FOCUS STYLES section above (with !important) */

.text-muted { color: var(--admin-text-muted); }
.text-accent { color: var(--admin-accent); }
.text-success { color: var(--admin-green); }
.text-danger { color: var(--admin-red); }
.text-warning { color: var(--admin-yellow); }

/* Code and monospace typography */
code, pre, .font-mono, .mono {
  font-family: var(--font-mono);
  font-feature-settings: 'liga' 1, 'calt' 1;
}

code {
  font-size: 0.9em;
  background: var(--admin-bg-subtle);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
}

pre {
  background: var(--admin-bg-subtle);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

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

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }

/* ===========================================
   RESPONSIVE VISIBILITY UTILITIES
   Consistent breakpoint-based show/hide classes
   =========================================== */

/* Hide on specific breakpoint ranges */
@media (max-width: 479.98px) {
  .hide-xs { display: none !important; }
}

@media (min-width: 480px) and (max-width: 767.98px) {
  .hide-sm { display: none !important; }
}

@media (min-width: 768px) and (max-width: 1023.98px) {
  .hide-md { display: none !important; }
}

@media (min-width: 1024px) and (max-width: 1279.98px) {
  .hide-lg { display: none !important; }
}

@media (min-width: 1280px) and (max-width: 1535.98px) {
  .hide-xl { display: none !important; }
}

@media (min-width: 1536px) {
  .hide-2xl { display: none !important; }
}

/* Hide below breakpoint (show on larger screens) */
@media (max-width: 479.98px) {
  .show-sm-up, .show-md-up, .show-lg-up, .show-xl-up, .show-2xl-up { display: none !important; }
}

@media (max-width: 767.98px) {
  .show-md-up, .show-lg-up, .show-xl-up, .show-2xl-up { display: none !important; }
  .hide-mobile { display: none !important; }
}

@media (max-width: 1023.98px) {
  .show-lg-up, .show-xl-up, .show-2xl-up { display: none !important; }
  .hide-tablet { display: none !important; }
}

@media (max-width: 1279.98px) {
  .show-xl-up, .show-2xl-up { display: none !important; }
}

@media (max-width: 1535.98px) {
  .show-2xl-up { display: none !important; }
}

/* Show below breakpoint (hide on larger screens) */
@media (min-width: 480px) {
  .hide-sm-up { display: none !important; }
}

@media (min-width: 768px) {
  .hide-md-up { display: none !important; }
  .hide-desktop { display: none !important; }
}

@media (min-width: 1024px) {
  .hide-lg-up { display: none !important; }
}

@media (min-width: 1280px) {
  .hide-xl-up { display: none !important; }
}

@media (min-width: 1536px) {
  .hide-2xl-up { display: none !important; }
}

/* ===========================================
   RESPONSIVE SPACING UTILITIES
   Adjust spacing at different breakpoints
   =========================================== */

/* Responsive padding - reduces on mobile */
@media (max-width: 767.98px) {
  .p-responsive { padding: var(--space-3) !important; }
  .px-responsive { padding-left: var(--space-3) !important; padding-right: var(--space-3) !important; }
  .py-responsive { padding-top: var(--space-3) !important; padding-bottom: var(--space-3) !important; }
}

@media (min-width: 768px) and (max-width: 1023.98px) {
  .p-responsive { padding: var(--space-4) !important; }
  .px-responsive { padding-left: var(--space-4) !important; padding-right: var(--space-4) !important; }
  .py-responsive { padding-top: var(--space-4) !important; padding-bottom: var(--space-4) !important; }
}

@media (min-width: 1024px) {
  .p-responsive { padding: var(--space-6) !important; }
  .px-responsive { padding-left: var(--space-6) !important; padding-right: var(--space-6) !important; }
  .py-responsive { padding-top: var(--space-6) !important; padding-bottom: var(--space-6) !important; }
}

/* Responsive gap - reduces on mobile */
@media (max-width: 767.98px) {
  .gap-responsive { gap: var(--space-3) !important; }
}

@media (min-width: 768px) and (max-width: 1023.98px) {
  .gap-responsive { gap: var(--space-4) !important; }
}

@media (min-width: 1024px) {
  .gap-responsive { gap: var(--space-6) !important; }
}

/* ===========================================
   RESPONSIVE LAYOUT UTILITIES
   Stack/inline based on viewport
   =========================================== */

/* Stack on mobile, inline on tablet+ */
.stack-mobile {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .stack-mobile {
    flex-direction: row;
    align-items: center;
  }
}

/* Stack on mobile/tablet, inline on desktop */
.stack-tablet {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 1024px) {
  .stack-tablet {
    flex-direction: row;
    align-items: center;
  }
}

/* Full width on mobile, auto on desktop */
.w-full-mobile {
  width: 100%;
}

@media (min-width: 768px) {
  .w-full-mobile {
    width: auto;
  }
}

/* ============================================
   ICON SIZE UTILITIES
   Standardized 6-size scale for consistent icons
   ============================================ */

/* Icon Size Classes */
.icon-xs {
  width: var(--icon-xs);
  height: var(--icon-xs);
}

.icon-sm {
  width: var(--icon-sm);
  height: var(--icon-sm);
}

.icon-md {
  width: var(--icon-md);
  height: var(--icon-md);
}

.icon-lg {
  width: var(--icon-lg);
  height: var(--icon-lg);
}

.icon-xl {
  width: var(--icon-xl);
  height: var(--icon-xl);
}

.icon-2xl {
  width: var(--icon-2xl);
  height: var(--icon-2xl);
}

/* Icon Container Classes - for wrapping icons with background */
.icon-container {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-container-xs {
  width: calc(var(--icon-xs) * 2);
  height: calc(var(--icon-xs) * 2);
}

.icon-container-sm {
  width: calc(var(--icon-sm) * 2);
  height: calc(var(--icon-sm) * 2);
}

.icon-container-md {
  width: calc(var(--icon-md) * 2);
  height: calc(var(--icon-md) * 2);
}

.icon-container-lg {
  width: calc(var(--icon-lg) * 2);
  height: calc(var(--icon-lg) * 2);
}

.icon-container-xl {
  width: calc(var(--icon-xl) * 2);
  height: calc(var(--icon-xl) * 2);
}

.icon-container-2xl {
  width: calc(var(--icon-2xl) * 2);
  height: calc(var(--icon-2xl) * 2);
}

/* SVG Icon Base Styles - ensure currentColor inheritance */
.icon,
[class*="icon-"] svg,
.icon-container svg {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
  fill: currentColor;
  stroke: currentColor;
}

/* For icons that should only use stroke (outlined icons) */
.icon-stroke,
.icon-outline {
  fill: none;
  stroke: currentColor;
}

/* For icons that should only use fill (solid icons) */
.icon-fill,
.icon-solid {
  fill: currentColor;
  stroke: none;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.animate-fadeIn { animation: fadeIn 0.3s ease; }
.animate-fadeInUp { animation: fadeInUp 0.3s ease; }
.animate-fadeInDown { animation: fadeInDown 0.3s ease; }
.animate-scaleIn { animation: scaleIn 0.2s ease; }
.animate-bounce { animation: bounce 0.5s ease; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-shake { animation: shake 0.3s ease; }

/* Staggered animations */
.stagger > * {
  animation: fadeInUp 0.3s ease both;
}

.stagger > *:nth-child(1) { animation-delay: 0ms; }
.stagger > *:nth-child(2) { animation-delay: 50ms; }
.stagger > *:nth-child(3) { animation-delay: 100ms; }
.stagger > *:nth-child(4) { animation-delay: 150ms; }
.stagger > *:nth-child(5) { animation-delay: 200ms; }
.stagger > *:nth-child(6) { animation-delay: 250ms; }

/* ============================================
   CHARTS
   ============================================ */
.chart-container {
  position: relative;
  width: 100%;
  height: 300px;
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ============================================
   DATA TABLE ENHANCEMENTS
   ============================================ */
.data-table-container {
  overflow-x: auto;
  border-radius: var(--admin-radius-lg);
  border: 1px solid var(--admin-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th {
  padding: 0.875rem 1rem;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--admin-bg-subtle);
  border-bottom: 1px solid var(--admin-border);
  position: sticky;
  top: 0;
  white-space: nowrap;
}

.data-table th.sortable {
  cursor: pointer;
  user-select: none;
}

.data-table th.sortable:hover {
  color: var(--admin-text);
}

.data-table th .sort-icon {
  margin-left: 0.375rem;
  opacity: 0.3;
}

.data-table th.sorted .sort-icon {
  opacity: 1;
  color: var(--admin-accent);
}

.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--admin-border);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background var(--admin-transition-fast);
}

.data-table tbody tr:hover {
  background: var(--admin-surface-hover);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table .checkbox-cell {
  width: 40px;
}

.data-table .actions-cell {
  width: 100px;
  text-align: right;
}

/* Pagination */
.table-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--admin-border);
  background: var(--admin-bg-subtle);
}

.table-pagination-info {
  font-size: 0.8rem;
  color: var(--admin-text-muted);
}

.table-pagination-buttons {
  display: flex;
  gap: 0.375rem;
}

.table-pagination-buttons button {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-md);
  cursor: pointer;
  color: var(--admin-text-muted);
  font-size: 0.8rem;
  transition: all var(--admin-transition-fast);
}

.table-pagination-buttons button:hover:not(:disabled) {
  background: var(--admin-surface-hover);
  color: var(--admin-text);
}

.table-pagination-buttons button.active {
  background: var(--admin-accent);
  border-color: var(--admin-accent);
  color: white;
}

.table-pagination-buttons button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ============================================
   HIGH CONTRAST THEME
   WCAG AAA Compliant (7:1+ contrast ratio)
   ============================================ */

[data-theme="high-contrast"] {
  /* Background Colors - Pure black for maximum contrast */
  --admin-bg: #000000;
  --admin-bg-subtle: #000000;
  --admin-surface: #000000;
  --admin-surface-hover: #1a1a1a;

  /* Text Colors - Pure white for maximum contrast */
  --admin-text: #FFFFFF;
  --admin-text-secondary: #FFFFFF;
  --admin-text-muted: #cccccc;

  /* High Contrast Borders */
  --admin-border: #FFFFFF;
  --admin-border-strong: #FFFFFF;
  --admin-overlay: rgba(0, 0, 0, 0.95);

  /* Semantic Colors - High Contrast Versions */
  --admin-green: #00FF00;
  --admin-yellow: #FFFF00;
  --admin-red: #FF0000;
  --admin-blue: #00FFFF;

  /* Brand Colors - Brighter for visibility */
  --admin-accent: #FF6600;
  --admin-accent-light: #FF8533;
  --admin-accent-dark: #FF6600;
  --admin-accent-glow: none;

  /* Disable shadows for cleaner high-contrast look */
  --admin-shadow-xs: none;
  --admin-shadow-sm: none;
  --admin-shadow-md: none;
  --admin-shadow-lg: none;
  --admin-shadow-xl: none;
  --admin-shadow-glow: none;
}

/* High Contrast Typography Enhancements */
[data-theme="high-contrast"] body {
  font-weight: 500;
  letter-spacing: 0.01em;
}

[data-theme="high-contrast"] h1,
[data-theme="high-contrast"] h2,
[data-theme="high-contrast"] h3,
[data-theme="high-contrast"] h4,
[data-theme="high-contrast"] h5,
[data-theme="high-contrast"] h6 {
  font-weight: 700;
}

/* High Contrast Links - Always Underlined */
[data-theme="high-contrast"] a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

[data-theme="high-contrast"] a:hover {
  text-decoration-thickness: 2px;
}

/* High Contrast Focus States - Thicker Outlines (3px) */
[data-theme="high-contrast"] *:focus {
  outline: 3px solid #FFFF00 !important;
  outline-offset: 2px !important;
}

[data-theme="high-contrast"] *:focus-visible {
  outline: 3px solid #FFFF00 !important;
  outline-offset: 2px !important;
}

/* High Contrast Form Elements */
[data-theme="high-contrast"] .form-input,
[data-theme="high-contrast"] .form-select,
[data-theme="high-contrast"] .form-textarea {
  border-width: 2px;
  border-color: #FFFFFF;
}

[data-theme="high-contrast"] .form-input:focus,
[data-theme="high-contrast"] .form-select:focus,
[data-theme="high-contrast"] .form-textarea:focus {
  border-color: #FFFF00;
  box-shadow: 0 0 0 3px #FFFF00;
}

/* High Contrast Buttons */
[data-theme="high-contrast"] .btn {
  border: 2px solid currentColor;
  font-weight: 700;
}

[data-theme="high-contrast"] .btn-primary {
  background: #FF6600;
  color: #000000;
  border-color: #FF6600;
}

[data-theme="high-contrast"] .btn-primary:hover:not(:disabled) {
  background: #FFFFFF;
  color: #000000;
  border-color: #FFFFFF;
}

[data-theme="high-contrast"] .btn-secondary {
  background: #000000;
  color: #FFFFFF;
  border-color: #FFFFFF;
}

[data-theme="high-contrast"] .btn-secondary:hover:not(:disabled) {
  background: #FFFFFF;
  color: #000000;
}

[data-theme="high-contrast"] .btn-ghost {
  border-color: #FFFFFF;
}

[data-theme="high-contrast"] .btn-ghost:hover:not(:disabled) {
  background: #FFFFFF;
  color: #000000;
}

[data-theme="high-contrast"] .btn-danger {
  background: #FF0000;
  color: #FFFFFF;
  border-color: #FF0000;
}

/* High Contrast Cards */
[data-theme="high-contrast"] .card {
  border: 2px solid #FFFFFF;
  box-shadow: none;
}

[data-theme="high-contrast"] .card:hover {
  border-color: #FFFF00;
}

/* High Contrast Sidebar */
[data-theme="high-contrast"] .sidebar {
  border-right: 2px solid #FFFFFF;
}

[data-theme="high-contrast"] .sidebar-nav-item:hover {
  border: 1px solid #FFFFFF;
}

[data-theme="high-contrast"] .sidebar-nav-item.active {
  background: #FFFFFF;
  color: #000000;
}

/* High Contrast Tables */
[data-theme="high-contrast"] th,
[data-theme="high-contrast"] td {
  border: 1px solid #FFFFFF;
}

[data-theme="high-contrast"] th {
  background: #1a1a1a;
}

[data-theme="high-contrast"] tbody tr:hover {
  background: #333333;
}

/* High Contrast Badges */
[data-theme="high-contrast"] .badge {
  border: 1px solid currentColor;
  background: #000000;
}

/* High Contrast Alerts */
[data-theme="high-contrast"] .alert {
  border-width: 2px;
  background: #000000;
}

/* High Contrast Toggle Switch */
[data-theme="high-contrast"] .toggle-slider {
  background: #333333;
  border: 2px solid #FFFFFF;
}

[data-theme="high-contrast"] .toggle-switch input:checked + .toggle-slider {
  background: #00FF00;
}

/* High Contrast Modal */
[data-theme="high-contrast"] .modal {
  border: 3px solid #FFFFFF;
}

/* High Contrast Dropdown */
[data-theme="high-contrast"] .dropdown-menu {
  border: 2px solid #FFFFFF;
}

[data-theme="high-contrast"] .dropdown-item:hover {
  background: #FFFFFF;
  color: #000000;
}

/* ============================================
   REDUCED MOTION SUPPORT
   Respects user preference for reduced motion
   ============================================ */

/* System Preference: prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .sidebar {
    transition: none !important;
  }

  .modal,
  .modal-overlay {
    transition: none !important;
  }

  .dropdown-menu {
    transition: none !important;
  }

  .toast {
    animation: none !important;
  }

  .card:hover,
  .btn:hover,
  .table-row:hover {
    transform: none !important;
  }

  html {
    scroll-behavior: auto !important;
  }
}

/* Manual Reduced Motion Toggle via data attribute */
[data-reduce-motion="true"] *,
[data-reduce-motion="true"] *::before,
[data-reduce-motion="true"] *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

[data-reduce-motion="true"] .sidebar {
  transition: none !important;
}

[data-reduce-motion="true"] .modal,
[data-reduce-motion="true"] .modal-overlay {
  transition: none !important;
}

[data-reduce-motion="true"] .dropdown-menu {
  transition: none !important;
}

[data-reduce-motion="true"] .toast {
  animation: none !important;
}

[data-reduce-motion="true"] .card:hover,
[data-reduce-motion="true"] .btn:hover,
[data-reduce-motion="true"] .table-row:hover {
  transform: none !important;
}

[data-reduce-motion="true"] html {
  scroll-behavior: auto !important;
}

/* Alternative visual feedback for reduced motion */
[data-reduce-motion="true"] .btn:hover:not(:disabled) {
  opacity: 0.85;
}

[data-reduce-motion="true"] .card:hover {
  outline: 2px solid var(--admin-accent);
  outline-offset: 2px;
}

/* ============================================
   ENHANCED FOCUS INDICATORS
   For users who need more visible focus states
   ============================================ */

[data-enhanced-focus="true"] *:focus,
[data-enhanced-focus="true"] *:focus-visible {
  outline: 3px solid var(--admin-accent) !important;
  outline-offset: 3px !important;
}

[data-enhanced-focus="true"] .btn:focus,
[data-enhanced-focus="true"] .form-input:focus,
[data-enhanced-focus="true"] .form-select:focus {
  box-shadow: 0 0 0 4px var(--admin-accent-glow) !important;
}

/* ============================================
   SAFE AREA INSETS (for notched devices)
   iPhone X+, modern Android with notches/punch-holes

   IMPORTANT: Requires viewport meta tag with viewport-fit=cover:
   <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">

   env() function provides safe-area-inset values:
   - safe-area-inset-top: Status bar / notch area (top)
   - safe-area-inset-bottom: Home indicator / gesture area (bottom)
   - safe-area-inset-left: Screen edge padding (landscape left)
   - safe-area-inset-right: Screen edge padding (landscape right)
   ============================================ */

/* CSS Custom Properties for safe area insets with fallbacks */
:root {
  --safe-area-top: env(safe-area-inset-top, 0px);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --safe-area-left: env(safe-area-inset-left, 0px);
  --safe-area-right: env(safe-area-inset-right, 0px);
}

@supports (padding: env(safe-area-inset-bottom)) {
  /* ===========================================
     FIXED HEADERS / TOPBARS
     Add padding for devices with notches/status bars
     =========================================== */
  .admin-topbar {
    padding-top: calc(var(--space-2) + env(safe-area-inset-top, 0px));
    padding-left: calc(var(--space-6) + env(safe-area-inset-left, 0px));
    padding-right: calc(var(--space-6) + env(safe-area-inset-right, 0px));
  }

  /* Adjust topbar height to account for safe area */
  .admin-topbar {
    min-height: calc(var(--admin-topbar-height) + env(safe-area-inset-top, 0px));
  }

  /* ===========================================
     SIDEBAR NAVIGATION
     Account for safe areas on left/bottom
     =========================================== */
  .admin-sidebar {
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    padding-left: env(safe-area-inset-left, 0px);
  }

  .sidebar-header {
    padding-top: calc(var(--space-5) + env(safe-area-inset-top, 0px));
  }

  .sidebar-footer {
    padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  }

  /* ===========================================
     MODAL CONTENT AREAS
     Ensure modal content respects safe areas
     =========================================== */
  .modal {
    margin-top: calc(var(--space-6) + env(safe-area-inset-top, 0px));
    margin-bottom: calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
    margin-left: calc(var(--space-4) + env(safe-area-inset-left, 0px));
    margin-right: calc(var(--space-4) + env(safe-area-inset-right, 0px));
  }

  .modal-header {
    padding-top: calc(var(--space-5) + env(safe-area-inset-top, 0px));
  }

  .modal-footer {
    padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  }

  /* Full-screen modals need full safe area coverage */
  .modal-fullscreen,
  .modal-full {
    margin: 0;
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    padding-left: env(safe-area-inset-left, 0px);
    padding-right: env(safe-area-inset-right, 0px);
  }

  /* ===========================================
     TOAST NOTIFICATIONS
     Position above home indicator
     =========================================== */
  .toast-container {
    bottom: calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
    right: calc(var(--space-6) + env(safe-area-inset-right, 0px));
  }

  .toast {
    margin-bottom: env(safe-area-inset-bottom, 0px);
  }

  /* ===========================================
     SLIDE-OVER PANELS
     Full-height panels need safe area handling
     =========================================== */
  .slide-over {
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    padding-right: env(safe-area-inset-right, 0px);
  }

  .slide-over-header {
    padding-top: calc(var(--space-5) + env(safe-area-inset-top, 0px));
  }

  .slide-over-footer {
    padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  }

  /* ===========================================
     MAIN CONTENT AREA
     Ensure content doesn't get hidden behind safe areas
     =========================================== */
  .admin-main > .content,
  .admin-content {
    padding-bottom: calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
  }

  /* ===========================================
     DROPDOWNS & POPOVERS
     Ensure they respect horizontal safe areas
     =========================================== */
  .dropdown-menu {
    max-width: calc(100vw - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px) - var(--space-4));
  }

  /* ===========================================
     COMMAND PALETTE
     Should respect all safe areas
     =========================================== */
  .command-palette {
    margin-top: calc(var(--space-20) + env(safe-area-inset-top, 0px));
    margin-left: calc(var(--space-4) + env(safe-area-inset-left, 0px));
    margin-right: calc(var(--space-4) + env(safe-area-inset-right, 0px));
  }

  /* ===========================================
     FIXED BOTTOM ELEMENTS
     Generic class for any fixed bottom element
     =========================================== */
  .fixed-bottom,
  [data-position="fixed-bottom"] {
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }

  /* ===========================================
     STICKY ELEMENTS
     Adjust sticky positioning for safe areas
     =========================================== */
  .sticky-top {
    top: env(safe-area-inset-top, 0px);
  }

  .sticky-bottom {
    bottom: env(safe-area-inset-bottom, 0px);
  }

  /* ===========================================
     FORM ACTIONS (typically at bottom)
     Common pattern for forms with submit buttons
     =========================================== */
  .form-actions.fixed-bottom,
  .form-footer.fixed-bottom {
    padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
    padding-left: calc(var(--space-4) + env(safe-area-inset-left, 0px));
    padding-right: calc(var(--space-4) + env(safe-area-inset-right, 0px));
  }

  /* ===========================================
     DATA TABLE STICKY HEADERS
     Tables with fixed headers need safe area consideration
     =========================================== */
  .table-container.sticky-header th {
    top: calc(var(--admin-topbar-height) + env(safe-area-inset-top, 0px));
  }

  /* ===========================================
     FLOATING ACTION BUTTONS (FAB)
     Position respecting safe areas
     =========================================== */
  .fab,
  .floating-action-btn {
    bottom: calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
    right: calc(var(--space-6) + env(safe-area-inset-right, 0px));
  }
}

/* ===========================================
   LANDSCAPE MODE SAFE AREAS
   Handle notch in landscape orientation
   =========================================== */
@media (orientation: landscape) {
  @supports (padding: env(safe-area-inset-left)) {
    .admin-sidebar {
      padding-left: env(safe-area-inset-left, 0px);
    }

    .admin-main {
      padding-right: env(safe-area-inset-right, 0px);
    }

    /* Adjust content width in landscape */
    .admin-content,
    .page-content {
      padding-left: calc(var(--space-6) + env(safe-area-inset-left, 0px));
      padding-right: calc(var(--space-6) + env(safe-area-inset-right, 0px));
    }
  }
}

/* ===========================================
   MOBILE-SPECIFIC SAFE AREA ADJUSTMENTS
   Extra handling for mobile devices
   =========================================== */
@media (max-width: 1023.98px) {
  @supports (padding: env(safe-area-inset-bottom)) {
    /* When sidebar is hidden on mobile, adjust main content */
    .admin-main {
      padding-left: env(safe-area-inset-left, 0px);
      padding-right: env(safe-area-inset-right, 0px);
    }

    /* Mobile menu overlay should respect safe areas */
    .admin-sidebar.open {
      padding-top: env(safe-area-inset-top, 0px);
    }

    /* Ensure mobile topbar accounts for notch */
    .admin-topbar {
      padding-left: calc(var(--space-4) + env(safe-area-inset-left, 0px));
      padding-right: calc(var(--space-4) + env(safe-area-inset-right, 0px));
    }
  }
}

/* ===========================================
   TABLE SCROLL WRAPPER - Mobile UX
   Responsive horizontal scrolling for data tables
   =========================================== */
.table-scroll-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
  border: 1px solid var(--admin-border);
}

.table-scroll-wrapper::-webkit-scrollbar {
  height: 8px;
}

.table-scroll-wrapper::-webkit-scrollbar-track {
  background: var(--color-gray-100);
  border-radius: 4px;
}

.table-scroll-wrapper::-webkit-scrollbar-thumb {
  background: var(--color-gray-300);
  border-radius: 4px;
}

.table-scroll-wrapper::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

/* Dark mode scrollbar */
[data-theme="dark"] .table-scroll-wrapper::-webkit-scrollbar-track {
  background: var(--color-gray-800);
}

[data-theme="dark"] .table-scroll-wrapper::-webkit-scrollbar-thumb {
  background: var(--color-gray-600);
}

[data-theme="dark"] .table-scroll-wrapper::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-500);
}

.table-scroll-wrapper .data-table,
.table-scroll-wrapper .enrollments-table,
.table-scroll-wrapper .contacts-table,
.table-scroll-wrapper .learners-table,
.table-scroll-wrapper .revenue-table,
.table-scroll-wrapper .transactions-table {
  border: none;
  border-radius: 0;
  min-width: 600px; /* Ensure table doesn't shrink too much */
}

/* Mobile scroll indicator */
@media (max-width: 768px) {
  .table-scroll-wrapper {
    position: relative;
  }

  .table-scroll-wrapper::after {
    content: '\2190 Scroll \2192';
    display: block;
    text-align: center;
    font-size: 0.75rem;
    color: var(--admin-text-muted);
    padding: 0.5rem;
    background: var(--admin-bg-subtle);
    border-top: 1px solid var(--admin-border);
  }

  .table-scroll-wrapper:not(:has(:hover))::after {
    opacity: 0.7;
  }

  /* Hide indicator when table fits */
  .table-scroll-wrapper.no-scroll::after {
    display: none;
  }
}

/* ============================================
   COMING SOON BADGE
   ============================================ */

.coming-soon-badge {
  font-size: 0.65rem;
  padding: 2px 8px;
  background: var(--color-warning-bg);
  color: var(--color-warning-600);
  border-radius: 9999px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  margin-left: 0.5rem;
}

[data-theme="dark"] .coming-soon-badge {
  background: var(--color-warning-bg);
  color: var(--color-warning-400);
}

/* ============================================
   PAGE LOADING PROGRESS BAR
   Thin animated bar at top of viewport
   ============================================ */

.admin-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--admin-accent), #ff8c42, var(--admin-accent));
  background-size: 200% 100%;
  z-index: 9999;
  transition: width 0.4s ease, opacity 0.3s ease;
  animation: progress-shimmer 1.5s ease-in-out infinite;
  pointer-events: none;
  border-radius: 0 2px 2px 0;
}

.admin-progress-bar.complete {
  width: 100% !important;
  opacity: 0;
  transition: width 0.2s ease, opacity 0.4s ease 0.2s;
}

@keyframes progress-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================
   COLLAPSIBLE SIDEBAR
   Desktop icon-only mode (72px)
   ============================================ */

/* Toggle button in sidebar header */
.sidebar-collapse-btn {
  display: none;
  width: 28px;
  height: 28px;
  border: none;
  background: var(--admin-bg-subtle);
  border-radius: var(--admin-radius-sm);
  cursor: pointer;
  color: var(--admin-text-muted);
  padding: 0;
  align-items: center;
  justify-content: center;
  transition: all var(--admin-transition-fast);
  flex-shrink: 0;
}

.sidebar-collapse-btn:hover {
  background: var(--admin-border);
  color: var(--admin-text);
}

.sidebar-collapse-btn svg {
  width: 16px;
  height: 16px;
}

@media (min-width: 1024px) {
  .sidebar-collapse-btn {
    display: flex;
  }
}

/* Collapsed state */
.admin-sidebar.collapsed {
  width: var(--admin-sidebar-collapsed);
}

.admin-sidebar.collapsed + .sidebar-overlay + .admin-main,
.admin-sidebar.collapsed ~ .admin-main {
  margin-left: var(--admin-sidebar-collapsed);
}

.admin-sidebar.collapsed .sidebar-header {
  padding: var(--space-4) var(--space-3);
  justify-content: center;
}

.admin-sidebar.collapsed .sidebar-logo .logo-image,
.admin-sidebar.collapsed .sidebar-logo .logo-icon {
  width: 32px;
  height: 32px;
}

.admin-sidebar.collapsed .logo-badge {
  display: none;
}

.admin-sidebar.collapsed .sidebar-search {
  padding: var(--space-2) var(--space-3);
}

.admin-sidebar.collapsed .search-trigger {
  justify-content: center;
  padding: var(--space-2);
}

.admin-sidebar.collapsed .search-trigger span,
.admin-sidebar.collapsed .search-trigger kbd {
  display: none;
}

.admin-sidebar.collapsed .nav-section {
  padding: 0 var(--space-2);
}

.admin-sidebar.collapsed .nav-section-title {
  font-size: 0;
  text-align: center;
  padding: 0;
  margin-bottom: var(--space-1);
  border-bottom: 1px solid var(--admin-border);
  padding-bottom: var(--space-1);
}

.admin-sidebar.collapsed .nav-item {
  justify-content: center;
  padding: var(--space-2);
}

.admin-sidebar.collapsed .nav-label,
.admin-sidebar.collapsed .nav-badge {
  display: none;
}

.admin-sidebar.collapsed .nav-item::before {
  display: none;
}

.admin-sidebar.collapsed .sidebar-footer {
  padding: var(--space-3);
}

.admin-sidebar.collapsed .user-info,
.admin-sidebar.collapsed .user-menu-btn {
  display: none;
}

.admin-sidebar.collapsed .user-card {
  justify-content: center;
}

.admin-sidebar.collapsed .user-avatar {
  width: 32px;
  height: 32px;
  font-size: 0.7rem;
}

/* Tooltip for collapsed nav items */
.admin-sidebar.collapsed .nav-item {
  position: relative;
}

.admin-sidebar.collapsed .nav-item::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--admin-text);
  color: var(--admin-surface);
  padding: 4px 10px;
  border-radius: var(--admin-radius-sm);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--admin-transition-fast);
  z-index: 1000;
}

.admin-sidebar.collapsed .nav-item:hover::after {
  opacity: 1;
}

/* Collapse button arrow rotation */
.sidebar-collapse-btn .collapse-icon {
  transition: transform var(--admin-transition-normal);
}

.admin-sidebar.collapsed .sidebar-collapse-btn .collapse-icon {
  transform: rotate(180deg);
}

/* ============================================
   COLUMN SORTING INDICATORS
   ============================================ */

.admin-table th.sortable {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: 1.5rem;
}

.admin-table th.sortable::after {
  content: '';
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--admin-text-muted);
  opacity: 0.3;
  transition: opacity var(--admin-transition-fast), transform var(--admin-transition-fast);
}

.admin-table th.sortable:hover::after {
  opacity: 0.7;
}

.admin-table th.sortable.sort-asc::after {
  opacity: 1;
  border-top: 5px solid var(--admin-accent);
  transform: translateY(-50%) rotate(180deg);
}

.admin-table th.sortable.sort-desc::after {
  opacity: 1;
  border-top: 5px solid var(--admin-accent);
}

/* ============================================
   BULK SELECTION BAR
   ============================================ */

.bulk-actions-bar {
  display: none;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary-bg-subtle);
  border: 1px solid var(--admin-accent);
  border-radius: var(--admin-radius-md);
  margin-bottom: var(--space-4);
  animation: slideDown 0.2s ease;
}

.bulk-actions-bar.show {
  display: flex;
}

.bulk-actions-bar .selection-count {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--admin-accent);
  white-space: nowrap;
}

.bulk-actions-bar .bulk-btn {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--admin-radius-sm);
  border: 1px solid var(--admin-border);
  background: var(--admin-surface);
  color: var(--admin-text);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
  font-weight: var(--font-medium);
}

.bulk-actions-bar .bulk-btn:hover {
  background: var(--admin-bg-subtle);
  border-color: var(--admin-text-muted);
}

.bulk-actions-bar .bulk-btn.danger {
  color: var(--admin-red);
  border-color: var(--admin-red);
}

.bulk-actions-bar .bulk-btn.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.bulk-actions-bar .bulk-deselect {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--admin-text-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--admin-radius-sm);
}

.bulk-actions-bar .bulk-deselect:hover {
  color: var(--admin-text);
  background: var(--admin-bg-subtle);
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   GRID/LIST VIEW TOGGLE
   ============================================ */

.view-toggle {
  display: inline-flex;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-md);
  overflow: hidden;
}

.view-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--admin-surface);
  color: var(--admin-text-muted);
  cursor: pointer;
  transition: all var(--admin-transition-fast);
}

.view-toggle-btn:not(:last-child) {
  border-right: 1px solid var(--admin-border);
}

.view-toggle-btn:hover {
  background: var(--admin-bg-subtle);
  color: var(--admin-text);
}

.view-toggle-btn.active {
  background: var(--color-primary-bg-subtle);
  color: var(--admin-accent);
}

.view-toggle-btn svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   REFRESH BUTTON LOADING STATE
   ============================================ */

.refresh-btn.loading svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}