/* Theme Variables */
    :root {
      /* Brand Colors */
      --blue-50: #EFF6FF;
      --blue-100: #DBEAFE;
      --blue-200: #BFDBFE;
      --blue-300: #93C5FD;
      --blue-400: #60A5FA;
      --blue-500: #3B82F6;
      --blue-600: #2563EB;
      --blue-700: #1D4ED8;
      --blue-800: #1E40AF;
      --blue-900: #1E3A8A;
      
      /* Neutral Colors */
      --neutral-50: #FAFAFA;
      --neutral-100: #F5F5F5;
      --neutral-200: #EEEEEE;
      --neutral-300: #E0E0E0;
      --neutral-400: #BDBDBD;
      --neutral-500: #9E9E9E;
      --neutral-600: #757575;
      --neutral-700: #616161;
      --neutral-800: #424242;
      --neutral-900: #212121;
      --neutral-950: #121212;
      
      /* Feedback Colors */
      --success-light: #E8F5E9;
      --success-main: #4CAF50;
      --success-dark: #2E7D32;
      
      --warning-light: #FFF8E1;
      --warning-main: #FFC107;
      --warning-dark: #F57F17;
      
      --error-light: #FFEBEE;
      --error-main: #F44336;
      --error-dark: #C62828;
      
      --info-light: #E1F5FE;
      --info-main: #03A9F4;
      --info-dark: #0277BD;

      /* Typography */
      --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
      --font-size-xs: 0.75rem;    /* 12px */
      --font-size-sm: 0.875rem;   /* 14px */
      --font-size-md: 1rem;       /* 16px */
      --font-size-lg: 1.125rem;   /* 18px */
      --font-size-xl: 1.25rem;    /* 20px */
      --font-size-2xl: 1.5rem;    /* 24px */
      --font-size-3xl: 1.875rem;  /* 30px */
      --font-size-4xl: 2.25rem;   /* 36px */
      
      --font-weight-light: 300;
      --font-weight-regular: 400;
      --font-weight-medium: 500;
      --font-weight-semibold: 600;
      --font-weight-bold: 700;
      
      /* Spacing */
      --spacing-2xs: 0.25rem;   /* 4px */
      --spacing-xs: 0.5rem;     /* 8px */
      --spacing-sm: 0.75rem;    /* 12px */
      --spacing-md: 1rem;       /* 16px */
      --spacing-lg: 1.5rem;     /* 24px */
      --spacing-xl: 2rem;       /* 32px */
      --spacing-2xl: 2.5rem;    /* 40px */
      --spacing-3xl: 3rem;      /* 48px */
      
      /* Borders */
      --radius-sm: 0.25rem;    /* 4px */
      --radius-md: 0.5rem;     /* 8px */
      --radius-lg: 0.75rem;    /* 12px */
      --radius-xl: 1rem;       /* 16px */
      --radius-full: 9999px;
      
      /* Shadows */
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
      
      /* Layout */
      --header-height: 64px;
      --sidebar-width: 280px;
      --sidebar-collapsed-width: 80px;
      
      /* Transitions */
      --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
      --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
      --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
      
      /* Z-Index */
      --z-drawer: 40;
      --z-dropdown: 50;
      --z-header: 60;
      --z-toast: 70;
      --z-modal: 80;
      
      /* Theme-specific variables (light mode default) */
      --color-background: var(--neutral-100);
      --color-surface: white;
      --color-surface-hover: var(--neutral-50);
      --color-surface-active: var(--neutral-100);
      --color-surface-disabled: var(--neutral-200);
      
      --color-border: var(--neutral-200);
      --color-border-hover: var(--neutral-300);
      --color-border-focus: var(--blue-400);
      
      --color-text-primary: var(--neutral-900);
      --color-text-secondary: var(--neutral-700);
      --color-text-tertiary: var(--neutral-600);
      --color-text-disabled: var(--neutral-400);
      
      --color-primary-light: var(--blue-400);
      --color-primary-main: var(--blue-500);
      --color-primary-dark: var(--blue-700);
      --color-primary-contrast: white;
      
      --color-divider: var(--neutral-200);
      --color-overlay: rgba(0, 0, 0, 0.5);
      
      --shadow-color: rgba(0, 0, 0, 0.1);
      --bg-light: var(--neutral-100);
      
      /* Admin specific colors */
      --admin-primary: var(--blue-700);
      --admin-secondary: var(--blue-500);
      --admin-accent: var(--blue-300);
    }

    /* Dark Theme */
    [data-theme="dark"] {
      --color-background: var(--neutral-950);
      --color-surface: var(--neutral-900);
      --color-surface-hover: var(--neutral-800);
      --color-surface-active: var(--neutral-700);
      --color-surface-disabled: var(--neutral-800);
      
      --color-border: var(--neutral-800);
      --color-border-hover: var(--neutral-700);
      --color-border-focus: var(--blue-400);
      
      --color-text-primary: var(--neutral-50);
      --color-text-secondary: var(--neutral-300);
      --color-text-tertiary: var(--neutral-500);
      --color-text-disabled: var(--neutral-700);
      
      --color-primary-light: var(--blue-300);
      --color-primary-main: var(--blue-400);
      --color-primary-dark: var(--blue-600);
      --color-primary-contrast: var(--neutral-950);
      
      --color-divider: var(--neutral-800);
      --color-overlay: rgba(0, 0, 0, 0.8);
      
      --shadow-color: rgba(0, 0, 0, 0.3);
      
      --shadow-sm: 0 1px 2px 0 var(--shadow-color);
      --shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
      --shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -2px var(--shadow-color);
      --shadow-xl: 0 20px 25px -5px var(--shadow-color), 0 10px 10px -5px var(--shadow-color);
      --bg-light: var(--neutral-900);
      
      /* Admin specific colors */
      --admin-primary: var(--blue-500);
      --admin-secondary: var(--blue-300);
      --admin-accent: var(--blue-200);
    }

    /* Reset */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      font-size: var(--font-size-md);
      line-height: 1.5;
      color: var(--color-text-primary);
      background-color: var(--color-background);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      transition: background-color var(--transition-normal), color var(--transition-normal);
      overflow-x: hidden;
      min-height: 100vh;
    }

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

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

    input, button, textarea, select {
      font: inherit;
      color: inherit;
    }

    button {
      cursor: pointer;
    }

    img, svg {
      max-width: 100%;
      height: auto;
    }

    /* Typography */
    h1, h2, h3, h4, h5, h6 {
      margin: 0 0 var(--spacing-md);
      line-height: 1.2;
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-primary);
    }

    h1 {
      font-size: var(--font-size-3xl);
    }

    h2 {
      font-size: var(--font-size-2xl);
    }

    h3 {
      font-size: var(--font-size-xl);
    }

    h4 {
      font-size: var(--font-size-lg);
    }

    h5 {
      font-size: var(--font-size-md);
    }

    h6 {
      font-size: var(--font-size-sm);
    }

    p {
      margin-bottom: var(--spacing-md);
    }

    /* App container */
    .app-container {
      display: flex;
      min-height: 100vh;
      position: relative;
    }

    /* Header */
    .header {
      position: fixed;
      top: 0;
      right: 0;
      left: 0;
      height: var(--header-height);
      background-color: var(--admin-primary);
      box-shadow: var(--shadow-sm);
      display: flex;
      align-items: center;
      padding: 0 var(--spacing-lg);
      z-index: var(--z-header);
      transition: all var(--transition-normal);
      color: white;
    }

    .header-brand {
      display: flex;
      align-items: center;
      margin-right: var(--spacing-lg);
    }

    .header-logo {
      display: flex;
      align-items: center;
      font-size: var(--font-size-xl);
      color: white;
      font-weight: var(--font-weight-semibold);
      gap: var(--spacing-xs);
      transition: color var(--transition-fast);
    }

    .header-logo i {
      font-size: var(--font-size-2xl);
    }

    .header-title {
      font-size: var(--font-size-xl);
      font-weight: var(--font-weight-medium);
      color: white;
      margin-left: var(--spacing-md);
      flex: 1;
      transition: color var(--transition-fast);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: var(--spacing-md);
    }

    .login-status {
      display: flex;
      align-items: center;
      gap: var(--spacing-xs);
      font-size: var(--font-size-sm);
      font-weight: var(--font-weight-medium);
      color: white;
      background-color: rgba(255, 255, 255, 0.1);
      padding: var(--spacing-xs) var(--spacing-md);
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition-fast);
    }

    .login-status::before {
      content: '';
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--error-main);
      transition: background-color var(--transition-fast);
    }

    .login-status.logged-in::before {
      background-color: var(--success-main);
    }

    /* Menu button */
    .menu-button {
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: none;
      border: none;
      border-radius: var(--radius-full);
      color: white;
      transition: background-color var(--transition-fast), color var(--transition-fast);
    }

    .menu-button:hover {
      background-color: rgba(255, 255, 255, 0.1);
    }

    .menu-button i {
      font-size: var(--font-size-xl);
    }

    /* Sidebar */
    .sidebar {
      position: fixed;
      top: var(--header-height);
      bottom: 0;
      left: 0;
      width: var(--sidebar-width);
      background-color: var(--color-surface);
      box-shadow: var(--shadow-sm);
      z-index: var(--z-drawer);
      overflow-y: auto;
      transition: transform var(--transition-normal), width var(--transition-normal), background-color var(--transition-normal);
    }

    .sidebar-collapsed {
      width: var(--sidebar-collapsed-width);
    }

    .sidebar.sidebar-hidden {
      transform: translateX(-100%);
    }

    .nav-list {
      list-style-type: none;
      padding: var(--spacing-md) 0;
    }

    .nav-item {
      margin-bottom: var(--spacing-xs);
    }

    .nav-item-divider {
      height: 1px;
      background-color: var(--color-divider);
      margin: var(--spacing-lg) var(--spacing-md);
      transition: background-color var(--transition-normal);
    }

    .nav-link {
      display: flex;
      align-items: center;
      padding: var(--spacing-md);
      margin: 0 var(--spacing-xs);
      border-radius: var(--radius-md);
      color: var(--color-text-secondary);
      position: relative;
      overflow: hidden;
      transition: color var(--transition-fast), background-color var(--transition-fast);
    }

    .nav-link:hover {
      background-color: var(--color-surface-hover);
      color: var(--color-text-primary);
    }

    .nav-link.active {
      background-color: rgba(var(--blue-500-rgb), 0.08);
      color: var(--admin-primary);
      font-weight: var(--font-weight-medium);
    }

    [data-theme="dark"] .nav-link.active {
      background-color: rgba(var(--blue-400-rgb), 0.15);
    }

    .nav-link.active::before {
      content: '';
      position: absolute;
      left: 0;
      top: 25%;
      bottom: 25%;
      width: 3px;
      background-color: var(--admin-primary);
      border-radius: 0 var(--radius-full) var(--radius-full) 0;
      transition: background-color var(--transition-normal);
    }

    .nav-icon {
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: var(--spacing-md);
      flex-shrink: 0;
      font-size: var(--font-size-lg);
      transition: margin var(--transition-normal);
    }

    .nav-text {
      font-size: var(--font-size-sm);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      transition: opacity var(--transition-normal), width var(--transition-normal);
      flex: 1;
    }

    .sidebar-collapsed .nav-text {
      opacity: 0;
      width: 0;
    }

    .sidebar-collapsed .nav-link {
      padding: var(--spacing-md) 0;
      justify-content: center;
    }

    .sidebar-collapsed .nav-icon {
      margin-right: 0;
      font-size: var(--font-size-xl);
    }

    /* Sidebar overlay */
    .sidebar-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: var(--color-overlay);
      z-index: calc(var(--z-drawer) - 1);
      opacity: 0;
      visibility: hidden;
      transition: opacity var(--transition-normal), visibility var(--transition-normal);
    }

    .sidebar-overlay.show {
      opacity: 1;
      visibility: visible;
    }

    /* Main content */
    .main-content {
      flex: 1;
      padding: calc(var(--header-height) + var(--spacing-md)) var(--spacing-md) var(--spacing-md);
      margin-left: var(--sidebar-width);
      min-height: 100vh;
      transition: margin-left var(--transition-normal), padding var(--transition-normal);
    }

    .main-content.sidebar-collapsed {
      margin-left: var(--sidebar-collapsed-width);
    }

    .main-content.sidebar-hidden {
      margin-left: 0;
    }

    /* Page heading */
    .page-heading {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: var(--spacing-xl);
      flex-wrap: wrap;
      gap: var(--spacing-md);
    }

    .page-title {
      display: flex;
      align-items: center;
      gap: var(--spacing-sm);
      font-size: var(--font-size-2xl);
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-primary);
      margin: 0;
    }

    .page-title i {
      color: var(--admin-primary);
      transition: color var(--transition-normal);
    }

    .page-actions {
      display: flex;
      gap: var(--spacing-sm);
    }

    /* Card */
    .card {
      background-color: var(--color-surface);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      overflow: hidden;
      margin-bottom: var(--spacing-xl);
      border: 1px solid var(--color-border);
      transition: box-shadow var(--transition-fast), transform var(--transition-fast), 
                background-color var(--transition-normal), border-color var(--transition-normal);
    }

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

    .card-header {
      padding: var(--spacing-lg);
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--color-divider);
      transition: border-color var(--transition-normal);
    }

    .card-title {
      margin: 0;
      font-size: var(--font-size-lg);
      font-weight: var(--font-weight-medium);
      display: flex;
      align-items: center;
      gap: var(--spacing-sm);
      color: var(--color-text-primary);
      transition: color var(--transition-normal);
    }

    .card-title i {
      color: var(--admin-primary);
      transition: color var(--transition-normal);
    }

    .card-body {
      padding: var(--spacing-lg);
    }

    .card-footer {
      padding: var(--spacing-md) var(--spacing-lg);
      background-color: var(--color-surface-hover);
      border-top: 1px solid var(--color-divider);
      transition: background-color var(--transition-normal), border-color var(--transition-normal);
    }

    /* Stats grid */
    .stats-container {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: var(--spacing-lg);
      margin-bottom: var(--spacing-xl);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
      margin-bottom: 2rem;
    }

    @media (min-width: 992px) {
      .stats-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (max-width: 991px) {
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 576px) {
      .stats-grid {
        grid-template-columns: 1fr;
      }
    }

    .stats-card {
      background-color: var(--color-surface);
      border-radius: var(--radius-lg);
      padding: var(--spacing-lg);
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--color-border);
      transition: box-shadow var(--transition-fast), transform var(--transition-fast), 
                background-color var(--transition-normal), border-color var(--transition-normal);
      position: relative;
      overflow: hidden;
    }

    .stats-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }

    .stats-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background-color: var(--admin-primary);
      opacity: 0.8;
      transition: background-color var(--transition-normal);
    }

    .stats-card-title {
      font-size: var(--font-size-xs);
      font-weight: var(--font-weight-semibold);
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--color-text-secondary);
      margin-bottom: var(--spacing-sm);
      transition: color var(--transition-normal);
    }

    .stats-card-value {
      font-size: var(--font-size-3xl);
      font-weight: var(--font-weight-bold);
      color: var(--color-text-primary);
      margin-bottom: var(--spacing-sm);
      transition: color var(--transition-normal);
    }

    .stats-card-description {
      font-size: var(--font-size-sm);
      color: var(--color-text-tertiary);
      margin-top: auto;
      transition: color var(--transition-normal);
    }

    /* Section heading */
    .section-heading {
      font-size: var(--font-size-xl);
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-primary);
      margin-bottom: var(--spacing-lg);
      padding-bottom: var(--spacing-sm);
      border-bottom: 1px solid var(--color-divider);
      transition: color var(--transition-normal), border-color var(--transition-normal);
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: var(--spacing-sm) var(--spacing-lg);
      font-size: var(--font-size-sm);
      font-weight: var(--font-weight-medium);
      line-height: 1.5;
      text-align: center;
      white-space: nowrap;
      vertical-align: middle;
      cursor: pointer;
      user-select: none;
      border: 1px solid transparent;
      border-radius: var(--radius-md);
      transition: color var(--transition-fast), background-color var(--transition-fast), 
                border-color var(--transition-fast), box-shadow var(--transition-fast),
                transform var(--transition-fast);
    }

    .btn:focus {
      outline: none;
    }

    .btn:active {
      transform: translateY(1px);
    }

    .btn i {
      margin-right: var(--spacing-sm);
      font-size: 1.1em;
    }

    .btn-primary {
      color: var(--color-primary-contrast);
      background-color: var(--admin-primary);
      border-color: var(--admin-primary);
    }

    .btn-primary:hover {
      background-color: var(--admin-secondary);
      border-color: var(--admin-secondary);
      box-shadow: var(--shadow-sm);
    }

    .btn-primary:active {
      background-color: var(--admin-secondary);
      border-color: var(--admin-secondary);
      box-shadow: var(--shadow-inner);
    }

    .btn-secondary {
      color: var(--color-text-primary);
      background-color: var(--color-surface);
      border-color: var(--color-border);
    }

    .btn-secondary:hover {
      background-color: var(--color-surface-hover);
      border-color: var(--color-border-hover);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:active {
      background-color: var(--color-surface-active);
      box-shadow: var(--shadow-inner);
    }

    .btn-danger {
      color: white;
      background-color: var(--error-main);
      border-color: var(--error-main);
    }

    .btn-danger:hover {
      background-color: var(--error-dark);
      border-color: var(--error-dark);
      box-shadow: var(--shadow-sm);
    }

    .btn-success {
      color: white;
      background-color: var(--success-main);
      border-color: var(--success-main);
    }

    .btn-success:hover {
      background-color: var(--success-dark);
      border-color: var(--success-dark);
      box-shadow: var(--shadow-sm);
    }

    .btn-warning {
      color: var(--neutral-900);
      background-color: var(--warning-main);
      border-color: var(--warning-main);
    }

    .btn-warning:hover {
      background-color: var(--warning-dark);
      border-color: var(--warning-dark);
      color: white;
      box-shadow: var(--shadow-sm);
    }

    .btn-sm {
      padding: var(--spacing-xs) var(--spacing-sm);
      font-size: var(--font-size-xs);
    }

    .btn-lg {
      padding: var(--spacing-md) var(--spacing-xl);
      font-size: var(--font-size-md);
    }

    .btn-block {
      display: flex;
      width: 100%;
    }

    /* Forms */
    .form-group {
      margin-bottom: var(--spacing-lg);
    }

    .form-label {
      display: block;
      font-size: var(--font-size-sm);
      font-weight: var(--font-weight-medium);
      color: var(--color-text-secondary);
      margin-bottom: var(--spacing-xs);
      transition: color var(--transition-normal);
    }

    .form-control {
      width: 100%;
      padding: var(--spacing-sm) var(--spacing-md);
      font-size: var(--font-size-md);
      line-height: 1.5;
      color: var(--color-text-primary);
      background-color: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
                color var(--transition-normal), background-color var(--transition-normal);
    }

    .form-control:focus {
      border-color: var(--admin-primary);
      box-shadow: 0 0 0 3px rgba(var(--blue-500-rgb), 0.15);
      outline: none;
    }

    .form-control-icon {
      position: relative;
    }

    .form-control-icon .form-control {
      padding-left: calc(var(--spacing-md) * 2 + 1.25em);
    }

    .form-control-icon i {
      position: absolute;
      left: var(--spacing-md);
      top: 50%;
      transform: translateY(-50%);
      color: var(--color-text-tertiary);
      font-size: var(--font-size-lg);
      transition: color var(--transition-normal);
    }

    /* Status Badges */
    .badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0 var(--spacing-sm);
      height: 20px;
      font-size: var(--font-size-xs);
      font-weight: var(--font-weight-medium);
      line-height: 1;
      color: white;
      border-radius: var(--radius-full);
      white-space: nowrap;
    }

    .badge-success {
      background-color: var(--success-main);
    }

    .badge-warning {
      background-color: var(--warning-main);
      color: var(--neutral-900);
    }

    .badge-danger {
      background-color: var(--error-main);
    }

    .badge-info {
      background-color: var(--info-main);
    }

    .badge-default {
      background-color: var(--neutral-500);
    }

    /* Filter Panel */
    .filter-panel {
      display: flex;
      flex-wrap: wrap;
      gap: var(--spacing-md);
      padding: var(--spacing-md);
      margin-bottom: var(--spacing-lg);
      background-color: var(--color-surface);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      align-items: center;
    }

    .filter-group {
      display: flex;
      align-items: center;
      gap: var(--spacing-sm);
    }

    .filter-label {
      font-size: var(--font-size-sm);
      font-weight: var(--font-weight-medium);
      color: var(--color-text-secondary);
      white-space: nowrap;
      transition: color var(--transition-normal);
    }

    .filter-control {
      min-width: 160px;
    }

    /* Tables */
    .table-container {
      background-color: var(--color-surface);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-border);
      margin-bottom: var(--spacing-lg);
      transition: background-color var(--transition-normal), border-color var(--transition-normal);
    }

    table {
      width: 100%;
      border-collapse: collapse;
    }

    thead {
      background-color: var(--color-surface-hover);
      transition: background-color var(--transition-normal);
    }

    th {
      padding: var(--spacing-md);
      text-align: left;
      font-size: var(--font-size-sm);
      font-weight: var(--font-weight-medium);
      color: var(--color-text-secondary);
      border-bottom: 1px solid var(--color-divider);
      transition: color var(--transition-normal), border-color var(--transition-normal);
    }

    td {
      padding: var(--spacing-md);
      font-size: var(--font-size-sm);
      color: var(--color-text-primary);
      border-bottom: 1px solid var(--color-divider);
      transition: color var(--transition-normal), border-color var(--transition-normal);
    }

    tr:last-child td {
      border-bottom: none;
    }

    tbody tr {
      transition: background-color var(--transition-fast);
    }

    tbody tr:hover {
      background-color: var(--color-surface-hover);
    }

    .table-empty, 
    .table-loading {
      padding: var(--spacing-xl);
      text-align: center;
      color: var(--color-text-tertiary);
      font-style: italic;
    }

    /* Toast */
    #toast-container {
      position: fixed;
      bottom: var(--spacing-lg);
      right: var(--spacing-lg);
      z-index: var(--z-toast);
      display: flex;
      flex-direction: column;
      gap: var(--spacing-sm);
      width: 90%;
      max-width: 400px;
    }

    .toast {
      background-color: var(--color-surface);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      display: flex;
      opacity: 0;
      transform: translateX(100%);
      transition: opacity var(--transition-normal), transform var(--transition-normal), 
                background-color var(--transition-normal);
      position: relative;
    }

    .toast.show {
      opacity: 1;
      transform: translateX(0);
    }

    .toast-color-bar {
      width: 6px;
      flex-shrink: 0;
    }

    .toast-success .toast-color-bar {
      background-color: var(--success-main);
    }

    .toast-error .toast-color-bar {
      background-color: var(--error-main);
    }

    .toast-info .toast-color-bar {
      background-color: var(--info-main);
    }

    .toast-warning .toast-color-bar {
      background-color: var(--warning-main);
    }

    .toast-content {
      flex: 1;
      padding: var(--spacing-md);
    }

    .toast-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: var(--spacing-xs);
    }

    .toast-title {
      font-size: var(--font-size-sm);
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-primary);
      transition: color var(--transition-normal);
    }

    .toast-close {
      background: none;
      border: none;
      font-size: var(--font-size-lg);
      line-height: 1;
      color: var(--color-text-tertiary);
      cursor: pointer;
      transition: color var(--transition-fast);
    }

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

    .toast-body {
      font-size: var(--font-size-sm);
      color: var(--color-text-secondary);
      transition: color var(--transition-normal);
    }

    /* Login Only Mode */
    .login-only-mode {
      margin: 0 !important;
      padding: 0 !important;
      display: flex !important;
      align-items: center !important;
      justify-content: center !important;
      min-height: 100vh !important;
      background: linear-gradient(135deg, var(--blue-600), var(--blue-800)) !important;
      position: fixed !important;
      top: 0 !important;
      left: 0 !important;
      width: 100% !important;
      height: 100% !important;
      z-index: 9999 !important;
    }

    .login-only-mode > *:not(#login-form) {
      display: none !important;
    }

    .login-only-mode #login-form {
      display: block !important;
      margin: 0 !important;
    }

    .login-only-mode .login-container {
      margin: 0 !important;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3) !important;
    }

    /* Login */
    .login-container {
      max-width: 400px;
      margin: 100px auto;
      padding: var(--spacing-xl);
      background-color: var(--color-surface);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--color-border);
      transition: background-color var(--transition-normal), border-color var(--transition-normal);
    }

    .login-header {
      text-align: center;
      margin-bottom: var(--spacing-xl);
    }

    .login-logo {
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: var(--font-size-2xl);
      color: var(--admin-primary);
      margin-bottom: var(--spacing-md);
      transition: color var(--transition-normal);
    }

    .login-logo i {
      font-size: var(--font-size-3xl);
      margin-right: var(--spacing-sm);
    }

    .login-title {
      font-size: var(--font-size-2xl);
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-primary);
      margin-bottom: var(--spacing-xs);
      transition: color var(--transition-normal);
    }

    .login-subtitle {
      font-size: var(--font-size-sm);
      color: var(--color-text-secondary);
      transition: color var(--transition-normal);
    }

    /* Responsive */
    @media (max-width: 992px) {
      :root {
        --sidebar-width: 240px;
      }
      
      .stats-container {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .header {
        padding: 0 var(--spacing-md);
      }
      
      .sidebar {
        transform: translateX(-100%);
      }
      
      .sidebar.sidebar-visible {
        transform: translateX(0);
      }
      
      .main-content {
        margin-left: 0;
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
      }
      
      .main-content.sidebar-collapsed {
        margin-left: 0;
      }
      
      .header-title {
        display: none;
      }
      
      .form-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 576px) {
      .header {
        padding: 0 var(--spacing-sm);
      }
      
      .page-heading {
        flex-direction: column;
        align-items: flex-start;
      }
      
      .stats-container {
        grid-template-columns: 1fr;
      }
      
      .stats-card-value {
        font-size: var(--font-size-2xl);
      }
      
      .card-header, 
      .card-body, 
      .card-footer {
        padding: var(--spacing-md);
      }
      
      .login-container {
        margin: 50px var(--spacing-md);
        padding: var(--spacing-lg);
      }
    }
    
    
    
    
    
    
    
/* Dashboard Enhancements */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.dashboard-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.dashboard-date-selector {
  min-width: 150px;
}

.auto-refresh-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--neutral-300);
  border-radius: 34px;
  transition: var(--transition-normal);
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  border-radius: 50%;
  transition: var(--transition-normal);
}

input:checked + .toggle-slider {
  background-color: var(--admin-primary);
}

input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

.toggle-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.refresh-indicator {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--admin-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.refresh-indicator.refreshing {
  opacity: 1;
}

.refresh-indicator i {
  animation: spin 2s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(100px, auto);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.dashboard-section {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast),
              background-color var(--transition-normal), border-color var(--transition-normal);
}

.dashboard-section:hover {
  box-shadow: var(--shadow-lg);
}

.section-header {
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-divider);
}

.section-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-primary);
}

.section-header h3 i {
  color: var(--admin-primary);
}

/* Grid Layout */
.metrics-section {
  grid-column: span 8;
}

.alerts-section {
  grid-column: span 4;
}

.appointments-section {
  grid-column: span 8;
  grid-row: span 2;
}

.quick-actions-section {
  grid-column: span 4;
  grid-row: span 2;
}

.revenue-chart-section {
  grid-column: span 8;
}

.insights-section {
  grid-column: span 4;
}

.shop-performance-section {
  grid-column: span 12;
}

.service-revenue-section {
  grid-column: span 6;
}

.communications-section {
  grid-column: span 6;
}

/* Stats Cards Enhancement */
.stats-card {
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal);
}

.stats-card-icon {
  position: absolute;
  right: 15px;
  bottom: 10px;
  font-size: 3rem;
  opacity: 0.1;
  color: var(--admin-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.stats-card:hover .stats-card-icon {
  transform: translateY(-5px) rotate(10deg);
  opacity: 0.15;
}

.stats-card:hover {
  transform: translateY(-5px);
}

.stats-card.pulse .stats-card-value {
  position: relative;
}

.stats-card.pulse .stats-card-value::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  background: var(--admin-primary);
  border-radius: 50%;
  opacity: 0.2;
  transform: scale(0);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0);
    opacity: 0.2;
  }
  50% {
    opacity: 0;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}

/* Quick Actions */
.quick-actions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  padding: var(--spacing-md);
}

.quick-action-card {
  background-color: var(--color-surface-hover);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  text-align: center;
  min-height: 100px;
}

.quick-action-card:hover {
  background-color: rgba(var(--blue-500-rgb), 0.1);
  transform: translateY(-3px);
}

.quick-action-card:active {
  transform: translateY(1px);
}

.quick-action-icon {
  font-size: var(--font-size-2xl);
  color: var(--admin-primary);
}

.quick-action-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* Alerts */
.alerts-container {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-height: 200px;
  overflow-y: auto;
}

.alert {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.alert i {
  font-size: var(--font-size-lg);
}

.alert-success {
  background-color: var(--success-light);
  color: var(--success-dark);
}

.alert-warning {
  background-color: var(--warning-light);
  color: var(--warning-dark);
}

.alert-danger {
  background-color: var(--error-light);
  color: var(--error-dark);
}

.alert-info {
  background-color: var(--info-light);
  color: var(--info-dark);
}

/* Appointment Timeline */
.appointment-timeline-container {
  padding: var(--spacing-md);
}

.appointment-stats {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.appointment-stat {
  flex: 1;
  text-align: center;
  background-color: var(--color-surface-hover);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-2xs);
}

.stat-value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--admin-primary);
}

.appointment-chart {
  height: 250px;
  position: relative;
}

/* Business Insights */
.insights-container {
  padding: var(--spacing-md);
}

.insights-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.insights-title {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.insights-period {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  background-color: var(--color-surface-hover);
  padding: var(--spacing-2xs) var(--spacing-xs);
  border-radius: var(--radius-full);
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-md);
}

.insight-card {
  background-color: var(--color-surface-hover);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
}

.insight-value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--admin-primary);
  margin-bottom: var(--spacing-xs);
}

.insight-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* Recent Communications */
.communications-container {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-height: 400px;
  overflow-y: auto;
}

.communication-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
  cursor: pointer;
}

.communication-item:not(.empty):hover {
  background-color: var(--color-surface-hover);
}

.communication-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--color-surface-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--admin-primary);
}

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

.communication-text {
  font-size: var(--font-size-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-text-primary);
}

.communication-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-2xs);
}

.communication-item.message-customer .communication-icon {
  background-color: var(--info-light);
  color: var(--info-dark);
}

.communication-item.message-shop .communication-icon {
  background-color: var(--success-light);
  color: var(--success-dark);
}

.communication-item.activity .communication-icon {
  background-color: var(--warning-light);
  color: var(--warning-dark);
}

.communication-item.empty {
  opacity: 0.6;
  cursor: default;
}

/* Service Revenue */
.service-revenue-chart {
  padding: var(--spacing-md);
  height: 300px;
  position: relative;
}

/* Shop Performance */
.shop-performance-chart-container {
  height: 250px;
  margin-bottom: var(--spacing-lg);
}

/* Responsive Adjustments */
@media (max-width: 1400px) {
  .dashboard-grid {
    grid-template-columns: repeat(8, 1fr);
  }
  
  .metrics-section {
    grid-column: span 8;
  }
  
  .quick-actions-section {
    grid-column: span 2;
    grid-row: span 2;
  }
  
  .alerts-section {
    grid-column: span 3;
  }
  
  .appointments-section {
    grid-column: span 5;
    grid-row: span 2;
  }
  
  .insights-section {
    grid-column: span 3;
  }
  
  .communications-section {
    grid-column: span 3;
    grid-row: span 2;
  }
  
  .revenue-chart-section {
    grid-column: span 5;
  }
  
  .service-revenue-section {
    grid-column: span 3;
    grid-row: span 2;
  }
  
  .shop-performance-section {
    grid-column: span 8;
  }
}

@media (max-width: 992px) {
  .dashboard-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .metrics-section,
  .quick-actions-section,
  .alerts-section,
  .appointments-section,
  .insights-section,
  .communications-section,
  .revenue-chart-section,
  .service-revenue-section,
  .shop-performance-section {
    grid-column: span 4;
    grid-row: auto;
  }
  
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .dashboard-controls {
    width: 100%;
    flex-wrap: wrap;
  }
}

    /* Add these variables for RGB values (used in rgba calculations) */
    :root {
      --blue-50-rgb: 239, 246, 255;
      --blue-100-rgb: 219, 234, 254;
      --blue-200-rgb: 191, 219, 254;
      --blue-300-rgb: 147, 197, 253;
      --blue-400-rgb: 96, 165, 250;
      --blue-500-rgb: 59, 130, 246;
      --blue-600-rgb: 37, 99, 235;
      --blue-700-rgb: 29, 78, 216;
      --blue-800-rgb: 30, 64, 175;
      --blue-900-rgb: 30, 58, 138;
    }