/**
 * Care Book Ultimate - Admin Interface Styles
 *
 * Modern WordPress admin interface with exceptional UX
 * - Responsive design for all screen sizes
 * - Accessibility compliance (WCAG 2.1)
 * - Dark mode support
 * - Performance optimized
 * 
 * @package CareBook\Ultimate
 * @since 1.0.0
 */

/* ==========================================
   CSS CUSTOM PROPERTIES & VARIABLES
   ========================================== */

:root {
  /* Color System - Light Theme */
  --cbu-primary: #0073aa;
  --cbu-primary-hover: #005a87;
  --cbu-primary-light: #e8f4f8;
  --cbu-secondary: #646970;
  --cbu-secondary-light: #f6f7f7;
  
  --cbu-success: #00a32a;
  --cbu-success-light: #e6f7e6;
  --cbu-warning: #dba617;
  --cbu-warning-light: #fcf9e8;
  --cbu-error: #d63638;
  --cbu-error-light: #fcebeb;
  --cbu-info: #72aee6;
  --cbu-info-light: #e8f4f8;
  
  /* Neutral Colors */
  --cbu-white: #ffffff;
  --cbu-gray-50: #f9fafb;
  --cbu-gray-100: #f3f4f6;
  --cbu-gray-200: #e5e7eb;
  --cbu-gray-300: #d1d5db;
  --cbu-gray-400: #9ca3af;
  --cbu-gray-500: #6b7280;
  --cbu-gray-600: #4b5563;
  --cbu-gray-700: #374151;
  --cbu-gray-800: #1f2937;
  --cbu-gray-900: #111827;
  
  /* Typography */
  --cbu-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --cbu-font-size-xs: 0.75rem;    /* 12px */
  --cbu-font-size-sm: 0.875rem;   /* 14px */
  --cbu-font-size-base: 1rem;     /* 16px */
  --cbu-font-size-lg: 1.125rem;   /* 18px */
  --cbu-font-size-xl: 1.25rem;    /* 20px */
  --cbu-font-size-2xl: 1.5rem;    /* 24px */
  --cbu-font-size-3xl: 1.875rem;  /* 30px */
  
  --cbu-font-weight-normal: 400;
  --cbu-font-weight-medium: 500;
  --cbu-font-weight-semibold: 600;
  --cbu-font-weight-bold: 700;
  
  --cbu-line-height-tight: 1.25;
  --cbu-line-height-snug: 1.375;
  --cbu-line-height-normal: 1.5;
  --cbu-line-height-relaxed: 1.625;
  
  /* Spacing */
  --cbu-space-1: 0.25rem;   /* 4px */
  --cbu-space-2: 0.5rem;    /* 8px */
  --cbu-space-3: 0.75rem;   /* 12px */
  --cbu-space-4: 1rem;      /* 16px */
  --cbu-space-5: 1.25rem;   /* 20px */
  --cbu-space-6: 1.5rem;    /* 24px */
  --cbu-space-8: 2rem;      /* 32px */
  --cbu-space-10: 2.5rem;   /* 40px */
  --cbu-space-12: 3rem;     /* 48px */
  --cbu-space-16: 4rem;     /* 64px */
  
  /* Borders */
  --cbu-border-width: 1px;
  --cbu-border-width-2: 2px;
  --cbu-border-color: var(--cbu-gray-200);
  --cbu-border-color-hover: var(--cbu-gray-300);
  
  /* Border Radius */
  --cbu-radius-sm: 0.25rem;   /* 4px */
  --cbu-radius: 0.375rem;     /* 6px */
  --cbu-radius-md: 0.5rem;    /* 8px */
  --cbu-radius-lg: 0.75rem;   /* 12px */
  --cbu-radius-xl: 1rem;      /* 16px */
  --cbu-radius-full: 9999px;
  
  /* Shadows */
  --cbu-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --cbu-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --cbu-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --cbu-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --cbu-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --cbu-transition-fast: all 150ms ease-in-out;
  --cbu-transition: all 300ms ease-in-out;
  --cbu-transition-slow: all 500ms ease-in-out;
  
  /* Z-index Scale */
  --cbu-z-auto: auto;
  --cbu-z-0: 0;
  --cbu-z-10: 10;
  --cbu-z-20: 20;
  --cbu-z-30: 30;
  --cbu-z-40: 40;
  --cbu-z-50: 50;
  --cbu-z-modal: 1000;
  --cbu-z-toast: 1100;
  --cbu-z-tooltip: 1200;
}

/* Dark Theme Variables */
[data-cbu-theme="dark"] {
  --cbu-primary: #4f94cd;
  --cbu-primary-hover: #6ba3db;
  --cbu-primary-light: #1e3a5f;
  --cbu-secondary: #a7aaad;
  --cbu-secondary-light: #2c3338;
  
  --cbu-success: #00d084;
  --cbu-success-light: #1a3d2e;
  --cbu-warning: #f0c33c;
  --cbu-warning-light: #3d2f1a;
  --cbu-error: #f56565;
  --cbu-error-light: #3d1a1a;
  --cbu-info: #63b3ed;
  --cbu-info-light: #1e3a5f;
  
  --cbu-white: #1e1e1e;
  --cbu-gray-50: #2c2c2c;
  --cbu-gray-100: #383838;
  --cbu-gray-200: #4a4a4a;
  --cbu-gray-300: #5c5c5c;
  --cbu-gray-400: #737373;
  --cbu-gray-500: #8a8a8a;
  --cbu-gray-600: #a1a1a1;
  --cbu-gray-700: #b8b8b8;
  --cbu-gray-800: #cfcfcf;
  --cbu-gray-900: #e6e6e6;
  
  --cbu-border-color: var(--cbu-gray-200);
  --cbu-border-color-hover: var(--cbu-gray-300);
}

/* ==========================================
   BASE STYLES & RESET
   ========================================== */

.care-book-ultimate-admin {
  font-family: var(--cbu-font-family);
  font-size: var(--cbu-font-size-base);
  line-height: var(--cbu-line-height-normal);
  color: var(--cbu-gray-900);
  background-color: var(--cbu-white);
}

.care-book-ultimate-admin *,
.care-book-ultimate-admin *::before,
.care-book-ultimate-admin *::after {
  box-sizing: border-box;
}

.care-book-ultimate-admin button {
  font-family: inherit;
}

/* Screen Reader Only */
.screen-reader-text {
  position: absolute !important;
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ==========================================
   HEADER SECTION
   ========================================== */

.cbu-header {
  background: linear-gradient(135deg, var(--cbu-primary) 0%, var(--cbu-primary-hover) 100%);
  color: var(--cbu-white);
  padding: var(--cbu-space-6) var(--cbu-space-8);
  margin: 0 -20px var(--cbu-space-8) -20px;
  border-radius: 0 0 var(--cbu-radius-xl) var(--cbu-radius-xl);
  position: relative;
  overflow: hidden;
}

.cbu-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg fill-opacity='0.1'%3E%3Cpolygon fill='%23ffffff' points='50 0 60 40 100 50 60 60 50 100 40 60 0 50 40 40'/%3E%3C/g%3E%3C/svg%3E") repeat;
  opacity: 0.1;
  z-index: 1;
}

.cbu-header-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  position: relative;
  z-index: 2;
}

.cbu-header-title h1 {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-3);
  margin: 0;
  font-size: var(--cbu-font-size-3xl);
  font-weight: var(--cbu-font-weight-bold);
  color: var(--cbu-white);
}

.cbu-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--cbu-radius-lg);
  backdrop-filter: blur(10px);
}

.cbu-version {
  display: inline-block;
  padding: var(--cbu-space-1) var(--cbu-space-3);
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--cbu-radius-full);
  font-size: var(--cbu-font-size-sm);
  font-weight: var(--cbu-font-weight-medium);
  margin-left: var(--cbu-space-3);
}

.cbu-subtitle {
  margin: var(--cbu-space-2) 0 0 0;
  font-size: var(--cbu-font-size-lg);
  opacity: 0.9;
}

.cbu-header-actions {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-4);
}

.cbu-help-toggle {
  background: rgba(255, 255, 255, 0.2) !important;
  color: var(--cbu-white) !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  backdrop-filter: blur(10px);
  transition: var(--cbu-transition-fast);
}

.cbu-help-toggle:hover {
  background: rgba(255, 255, 255, 0.3) !important;
  transform: translateY(-2px);
}

/* Theme Toggle */
.cbu-theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
}

.cbu-toggle-switch {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
  cursor: pointer;
}

.cbu-toggle-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.cbu-toggle-slider {
  position: relative;
  display: block;
  width: 48px;
  height: 24px;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--cbu-radius-full);
  transition: var(--cbu-transition-fast);
}

.cbu-toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: var(--cbu-white);
  border-radius: 50%;
  transition: var(--cbu-transition-fast);
}

.cbu-toggle-switch input:checked + .cbu-toggle-slider {
  background: rgba(255, 255, 255, 0.3);
}

.cbu-toggle-switch input:checked + .cbu-toggle-slider::after {
  transform: translateX(24px);
}

.cbu-toggle-label {
  font-size: var(--cbu-font-size-sm);
  font-weight: var(--cbu-font-weight-medium);
  color: var(--cbu-white);
}

/* Help Panel */
.cbu-help-panel {
  position: absolute;
  top: 100%;
  left: var(--cbu-space-8);
  right: var(--cbu-space-8);
  background: var(--cbu-white);
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-radius: var(--cbu-radius-lg);
  box-shadow: var(--cbu-shadow-xl);
  padding: var(--cbu-space-6);
  margin-top: var(--cbu-space-4);
  z-index: var(--cbu-z-40);
  transform: translateY(-10px);
  opacity: 0;
  visibility: hidden;
  transition: var(--cbu-transition);
}

.cbu-help-panel[aria-hidden="false"] {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.cbu-help-content h3 {
  margin: 0 0 var(--cbu-space-4) 0;
  font-size: var(--cbu-font-size-xl);
  font-weight: var(--cbu-font-weight-semibold);
  color: var(--cbu-gray-900);
}

.cbu-help-steps {
  display: grid;
  gap: var(--cbu-space-3);
}

.cbu-help-step {
  display: flex;
  align-items: flex-start;
  gap: var(--cbu-space-3);
  padding: var(--cbu-space-3);
  background: var(--cbu-gray-50);
  border-radius: var(--cbu-radius);
}

.cbu-step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--cbu-primary);
  color: var(--cbu-white);
  border-radius: 50%;
  font-size: var(--cbu-font-size-sm);
  font-weight: var(--cbu-font-weight-semibold);
  flex-shrink: 0;
}

.cbu-help-footer {
  margin: var(--cbu-space-4) 0 0 0;
  padding: var(--cbu-space-4);
  background: var(--cbu-primary-light);
  border-radius: var(--cbu-radius);
  text-align: center;
  color: var(--cbu-primary);
}

/* ==========================================
   STATUS DASHBOARD
   ========================================== */

.cbu-status-dashboard {
  margin-bottom: var(--cbu-space-8);
}

.cbu-status-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--cbu-space-4);
}

.cbu-status-card {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-4);
  padding: var(--cbu-space-6);
  background: var(--cbu-white);
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-radius: var(--cbu-radius-lg);
  box-shadow: var(--cbu-shadow-sm);
  transition: var(--cbu-transition-fast);
}

.cbu-status-card:hover {
  box-shadow: var(--cbu-shadow-md);
  transform: translateY(-2px);
}

.cbu-status-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--cbu-radius-lg);
  flex-shrink: 0;
}

.cbu-card-doctors .cbu-status-icon {
  background: var(--cbu-info-light);
  color: var(--cbu-info);
}

.cbu-card-services .cbu-status-icon {
  background: var(--cbu-warning-light);
  color: var(--cbu-warning);
}

.cbu-card-cache .cbu-status-icon {
  background: var(--cbu-success-light);
  color: var(--cbu-success);
}

.cbu-card-performance .cbu-status-icon {
  background: var(--cbu-primary-light);
  color: var(--cbu-primary);
}

.cbu-status-number {
  font-size: var(--cbu-font-size-2xl);
  font-weight: var(--cbu-font-weight-bold);
  color: var(--cbu-gray-900);
  line-height: var(--cbu-line-height-tight);
}

.cbu-status-label {
  font-size: var(--cbu-font-size-sm);
  color: var(--cbu-gray-600);
  font-weight: var(--cbu-font-weight-medium);
}

/* ==========================================
   NAVIGATION TABS
   ========================================== */

.cbu-nav-tabs {
  display: flex;
  margin-bottom: var(--cbu-space-8);
  border-bottom: var(--cbu-border-width) solid var(--cbu-border-color);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.cbu-nav-tab {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
  padding: var(--cbu-space-4) var(--cbu-space-6);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--cbu-gray-600);
  font-size: var(--cbu-font-size-base);
  font-weight: var(--cbu-font-weight-medium);
  cursor: pointer;
  transition: var(--cbu-transition-fast);
  white-space: nowrap;
  position: relative;
}

.cbu-nav-tab:hover {
  color: var(--cbu-primary);
  background: var(--cbu-primary-light);
}

.cbu-nav-tab.cbu-nav-tab-active,
.cbu-nav-tab[aria-selected="true"] {
  color: var(--cbu-primary);
  border-bottom-color: var(--cbu-primary);
  background: var(--cbu-primary-light);
}

.cbu-nav-tab .dashicons {
  font-size: 18px;
}

.cbu-tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 var(--cbu-space-2);
  background: var(--cbu-gray-200);
  border-radius: var(--cbu-radius-full);
  font-size: var(--cbu-font-size-xs);
  font-weight: var(--cbu-font-weight-semibold);
  line-height: 1;
}

.cbu-nav-tab-active .cbu-tab-badge,
.cbu-nav-tab[aria-selected="true"] .cbu-tab-badge {
  background: var(--cbu-primary);
  color: var(--cbu-white);
}

/* ==========================================
   TAB PANELS
   ========================================== */

.cbu-tab-panel {
  display: none;
}

.cbu-tab-panel.cbu-tab-panel-active,
.cbu-tab-panel[aria-hidden="false"] {
  display: block;
}

/* ==========================================
   TOOLBAR
   ========================================== */

.cbu-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--cbu-space-4) 0;
  margin-bottom: var(--cbu-space-6);
  border-bottom: var(--cbu-border-width) solid var(--cbu-border-color);
  gap: var(--cbu-space-4);
}

.cbu-toolbar-left,
.cbu-toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-3);
  flex-wrap: wrap;
}

/* Search Box */
.cbu-search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.cbu-search-input {
  width: 280px;
  padding: var(--cbu-space-3) var(--cbu-space-4);
  padding-right: 40px;
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-radius: var(--cbu-radius);
  font-size: var(--cbu-font-size-sm);
  transition: var(--cbu-transition-fast);
}

.cbu-search-input:focus {
  outline: none;
  border-color: var(--cbu-primary);
  box-shadow: 0 0 0 3px rgba(0, 115, 170, 0.1);
}

.cbu-search-clear {
  position: absolute;
  right: var(--cbu-space-2);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: var(--cbu-space-1);
  cursor: pointer;
  color: var(--cbu-gray-400);
  transition: var(--cbu-transition-fast);
  opacity: 0;
  visibility: hidden;
}

.cbu-search-input:not(:placeholder-shown) + .cbu-search-clear {
  opacity: 1;
  visibility: visible;
}

.cbu-search-clear:hover {
  color: var(--cbu-gray-600);
}

/* Filter Controls */
.cbu-filter-controls {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
}

.cbu-select {
  padding: var(--cbu-space-2) var(--cbu-space-4);
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-radius: var(--cbu-radius);
  font-size: var(--cbu-font-size-sm);
  background: var(--cbu-white);
  cursor: pointer;
  transition: var(--cbu-transition-fast);
}

.cbu-select:focus {
  outline: none;
  border-color: var(--cbu-primary);
  box-shadow: 0 0 0 3px rgba(0, 115, 170, 0.1);
}

/* Buttons */
.cbu-button-refresh {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
}

.cbu-bulk-actions {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
}

.cbu-button-bulk-block,
.cbu-button-bulk-unblock {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
  opacity: 0.6;
  transition: var(--cbu-transition-fast);
}

.cbu-button-bulk-block:not([disabled]),
.cbu-button-bulk-unblock:not([disabled]) {
  opacity: 1;
}

.cbu-button-bulk-block {
  background: var(--cbu-error) !important;
  border-color: var(--cbu-error) !important;
  color: var(--cbu-white) !important;
}

.cbu-button-bulk-block:hover:not([disabled]) {
  background: #b91c1c !important;
}

.cbu-button-bulk-unblock {
  background: var(--cbu-success) !important;
  border-color: var(--cbu-success) !important;
  color: var(--cbu-white) !important;
}

.cbu-button-bulk-unblock:hover:not([disabled]) {
  background: #166534 !important;
}

/* ==========================================
   TABLE STYLES
   ========================================== */

.cbu-table-container {
  background: var(--cbu-white);
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-radius: var(--cbu-radius-lg);
  overflow: hidden;
  box-shadow: var(--cbu-shadow-sm);
}

.cbu-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--cbu-font-size-sm);
}

.cbu-table thead {
  background: var(--cbu-gray-50);
}

.cbu-table th,
.cbu-table td {
  padding: var(--cbu-space-4);
  text-align: left;
  border-bottom: var(--cbu-border-width) solid var(--cbu-border-color);
}

.cbu-table th {
  font-weight: var(--cbu-font-weight-semibold);
  color: var(--cbu-gray-700);
  user-select: none;
  cursor: pointer;
  position: relative;
}

.cbu-table th[data-sort] {
  padding-right: var(--cbu-space-8);
}

.cbu-table th:hover {
  background: var(--cbu-gray-100);
}

.cbu-sort-indicator {
  position: absolute;
  right: var(--cbu-space-3);
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
  transition: var(--cbu-transition-fast);
}

.cbu-sort-indicator::after {
  content: '↕';
  font-size: var(--cbu-font-size-sm);
}

.cbu-table th[data-sort-direction="asc"] .cbu-sort-indicator::after {
  content: '↑';
  opacity: 1;
}

.cbu-table th[data-sort-direction="desc"] .cbu-sort-indicator::after {
  content: '↓';
  opacity: 1;
}

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

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

.cbu-table tbody tr.cbu-row-blocked {
  background: var(--cbu-error-light);
}

.cbu-table tbody tr.cbu-row-blocked:hover {
  background: #fecaca;
}

/* Table Columns */
.cbu-table-checkbox {
  width: 40px;
  text-align: center;
}

.cbu-table-name {
  min-width: 200px;
}

.cbu-table-email {
  min-width: 180px;
}

.cbu-table-status {
  width: 120px;
}

.cbu-table-actions {
  width: 120px;
  text-align: center;
}

/* Checkbox Styling */
.cbu-checkbox-label {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.cbu-checkbox-label input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.cbu-checkbox-custom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border: 2px solid var(--cbu-border-color);
  border-radius: var(--cbu-radius-sm);
  transition: var(--cbu-transition-fast);
}

.cbu-checkbox-custom::after {
  content: '';
  width: 10px;
  height: 6px;
  border: 2px solid var(--cbu-white);
  border-top: none;
  border-right: none;
  transform: rotate(-45deg) scale(0);
  transition: var(--cbu-transition-fast);
}

.cbu-checkbox-label input:checked + .cbu-checkbox-custom {
  background: var(--cbu-primary);
  border-color: var(--cbu-primary);
}

.cbu-checkbox-label input:checked + .cbu-checkbox-custom::after {
  transform: rotate(-45deg) scale(1);
}

.cbu-checkbox-label:hover .cbu-checkbox-custom {
  border-color: var(--cbu-primary);
}

/* Status Badges */
.cbu-status-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--cbu-space-1) var(--cbu-space-3);
  border-radius: var(--cbu-radius-full);
  font-size: var(--cbu-font-size-xs);
  font-weight: var(--cbu-font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.cbu-status-available {
  background: var(--cbu-success-light);
  color: var(--cbu-success);
}

.cbu-status-blocked {
  background: var(--cbu-error-light);
  color: var(--cbu-error);
}

/* Toggle Buttons */
.cbu-toggle-button {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-2);
  padding: var(--cbu-space-2) var(--cbu-space-4);
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-radius: var(--cbu-radius);
  background: var(--cbu-white);
  font-size: var(--cbu-font-size-xs);
  font-weight: var(--cbu-font-weight-medium);
  cursor: pointer;
  transition: var(--cbu-transition-fast);
}

.cbu-toggle-block {
  border-color: var(--cbu-error);
  color: var(--cbu-error);
}

.cbu-toggle-block:hover {
  background: var(--cbu-error);
  color: var(--cbu-white);
}

.cbu-toggle-unblock {
  border-color: var(--cbu-success);
  color: var(--cbu-success);
}

.cbu-toggle-unblock:hover {
  background: var(--cbu-success);
  color: var(--cbu-white);
}

/* Primary Row Content */
.cbu-table-primary {
  font-weight: var(--cbu-font-weight-medium);
}

.cbu-row-title strong {
  color: var(--cbu-gray-900);
}

.cbu-row-actions {
  margin-top: var(--cbu-space-1);
  opacity: 0;
  transition: var(--cbu-transition-fast);
}

.cbu-table-row:hover .cbu-row-actions {
  opacity: 1;
}

.cbu-view-services {
  color: var(--cbu-primary);
  text-decoration: none;
  font-size: var(--cbu-font-size-xs);
}

.cbu-view-services:hover {
  text-decoration: underline;
}

/* Empty State */
.cbu-empty-state {
  text-align: center;
}

.cbu-empty-state-content {
  padding: var(--cbu-space-16) var(--cbu-space-8);
  color: var(--cbu-gray-600);
}

.cbu-empty-icon {
  margin-bottom: var(--cbu-space-4);
  color: var(--cbu-gray-400);
}

.cbu-empty-icon .dashicons {
  font-size: 48px;
}

.cbu-empty-state h3 {
  margin: 0 0 var(--cbu-space-2) 0;
  font-size: var(--cbu-font-size-lg);
  font-weight: var(--cbu-font-weight-semibold);
  color: var(--cbu-gray-700);
}

.cbu-empty-state p {
  margin: 0;
  color: var(--cbu-gray-600);
}

/* ==========================================
   PAGINATION
   ========================================== */

.cbu-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--cbu-space-4);
  border-top: var(--cbu-border-width) solid var(--cbu-border-color);
  background: var(--cbu-gray-50);
}

.cbu-pagination-info {
  font-size: var(--cbu-font-size-sm);
  color: var(--cbu-gray-600);
}

.cbu-pagination-controls {
  display: flex;
  align-items: center;
  gap: var(--cbu-space-1);
}

.cbu-pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 var(--cbu-space-2);
  background: var(--cbu-white);
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-radius: var(--cbu-radius);
  font-size: var(--cbu-font-size-sm);
  cursor: pointer;
  transition: var(--cbu-transition-fast);
}

.cbu-pagination-btn:hover:not([disabled]) {
  background: var(--cbu-primary);
  border-color: var(--cbu-primary);
  color: var(--cbu-white);
}

.cbu-pagination-btn.cbu-current {
  background: var(--cbu-primary);
  border-color: var(--cbu-primary);
  color: var(--cbu-white);
}

.cbu-pagination-btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================
   LOADING & OVERLAYS
   ========================================== */

.cbu-loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--cbu-z-modal);
  opacity: 0;
  visibility: hidden;
  transition: var(--cbu-transition);
  backdrop-filter: blur(4px);
}

.cbu-loading-overlay[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.cbu-loading-content {
  text-align: center;
  padding: var(--cbu-space-8);
}

.cbu-loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--cbu-gray-200);
  border-top-color: var(--cbu-primary);
  border-radius: 50%;
  animation: cbu-spin 1s linear infinite;
  margin: 0 auto var(--cbu-space-4) auto;
}

@keyframes cbu-spin {
  to {
    transform: rotate(360deg);
  }
}

.cbu-loading-text {
  font-size: var(--cbu-font-size-lg);
  color: var(--cbu-gray-700);
  margin: 0;
}

/* ==========================================
   TOAST NOTIFICATIONS
   ========================================== */

.cbu-toast-container {
  position: fixed;
  top: var(--cbu-space-6);
  right: var(--cbu-space-6);
  z-index: var(--cbu-z-toast);
  max-width: 400px;
  pointer-events: none;
}

.cbu-toast {
  display: flex;
  align-items: flex-start;
  gap: var(--cbu-space-3);
  padding: var(--cbu-space-4);
  background: var(--cbu-white);
  border: var(--cbu-border-width) solid var(--cbu-border-color);
  border-left: 4px solid var(--cbu-info);
  border-radius: var(--cbu-radius-lg);
  box-shadow: var(--cbu-shadow-lg);
  margin-bottom: var(--cbu-space-3);
  transform: translateX(100%);
  opacity: 0;
  transition: var(--cbu-transition);
  pointer-events: auto;
}

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

.cbu-toast.cbu-toast-success {
  border-left-color: var(--cbu-success);
}

.cbu-toast.cbu-toast-error {
  border-left-color: var(--cbu-error);
}

.cbu-toast.cbu-toast-warning {
  border-left-color: var(--cbu-warning);
}

.cbu-toast-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
}

.cbu-toast-success .cbu-toast-icon {
  background: var(--cbu-success-light);
  color: var(--cbu-success);
}

.cbu-toast-error .cbu-toast-icon {
  background: var(--cbu-error-light);
  color: var(--cbu-error);
}

.cbu-toast-warning .cbu-toast-icon {
  background: var(--cbu-warning-light);
  color: var(--cbu-warning);
}

.cbu-toast-info .cbu-toast-icon {
  background: var(--cbu-info-light);
  color: var(--cbu-info);
}

.cbu-toast-content {
  flex: 1;
}

.cbu-toast-title {
  font-size: var(--cbu-font-size-sm);
  font-weight: var(--cbu-font-weight-semibold);
  color: var(--cbu-gray-900);
  margin: 0 0 var(--cbu-space-1) 0;
}

.cbu-toast-message {
  font-size: var(--cbu-font-size-sm);
  color: var(--cbu-gray-600);
  margin: 0;
}

.cbu-toast-close {
  background: none;
  border: none;
  padding: var(--cbu-space-1);
  cursor: pointer;
  color: var(--cbu-gray-400);
  transition: var(--cbu-transition-fast);
}

.cbu-toast-close:hover {
  color: var(--cbu-gray-600);
}

/* ==========================================
   MODALS
   ========================================== */

.cbu-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--cbu-z-modal);
  opacity: 0;
  visibility: hidden;
  transition: var(--cbu-transition);
  padding: var(--cbu-space-4);
}

.cbu-modal-backdrop[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.cbu-modal {
  background: var(--cbu-white);
  border-radius: var(--cbu-radius-xl);
  box-shadow: var(--cbu-shadow-xl);
  max-width: 600px;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.9);
  transition: var(--cbu-transition);
  display: flex;
  flex-direction: column;
}

.cbu-modal-backdrop[aria-hidden="false"] .cbu-modal {
  transform: scale(1);
}

.cbu-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--cbu-space-6);
  border-bottom: var(--cbu-border-width) solid var(--cbu-border-color);
}

.cbu-modal-title {
  font-size: var(--cbu-font-size-xl);
  font-weight: var(--cbu-font-weight-semibold);
  color: var(--cbu-gray-900);
  margin: 0;
}

.cbu-modal-close {
  background: none;
  border: none;
  padding: var(--cbu-space-2);
  cursor: pointer;
  color: var(--cbu-gray-400);
  transition: var(--cbu-transition-fast);
  border-radius: var(--cbu-radius);
}

.cbu-modal-close:hover {
  color: var(--cbu-gray-600);
  background: var(--cbu-gray-100);
}

.cbu-modal-content {
  flex: 1;
  padding: var(--cbu-space-6);
  overflow-y: auto;
}

.cbu-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--cbu-space-3);
  padding: var(--cbu-space-6);
  border-top: var(--cbu-border-width) solid var(--cbu-border-color);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

/* Tablet and Small Desktop */
@media (max-width: 1024px) {
  .cbu-header {
    padding: var(--cbu-space-4) var(--cbu-space-6);
  }
  
  .cbu-header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--cbu-space-4);
  }
  
  .cbu-header-actions {
    width: 100%;
    justify-content: flex-end;
  }
  
  .cbu-status-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cbu-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--cbu-space-4);
  }
  
  .cbu-toolbar-left,
  .cbu-toolbar-right {
    width: 100%;
    justify-content: space-between;
  }
  
  .cbu-search-input {
    width: 200px;
  }
}

/* Mobile Devices */
@media (max-width: 768px) {
  .care-book-ultimate-admin {
    margin: 0 -20px;
  }
  
  .cbu-header {
    margin: 0 0 var(--cbu-space-6) 0;
    border-radius: 0;
  }
  
  .cbu-status-cards {
    grid-template-columns: 1fr;
  }
  
  .cbu-nav-tabs {
    margin: 0 -20px var(--cbu-space-6) -20px;
    padding: 0 var(--cbu-space-4);
  }
  
  .cbu-nav-tab {
    padding: var(--cbu-space-3) var(--cbu-space-4);
    font-size: var(--cbu-font-size-sm);
  }
  
  .cbu-nav-tab .dashicons {
    font-size: 16px;
  }
  
  .cbu-tab-badge {
    min-width: 16px;
    height: 16px;
    font-size: 10px;
  }
  
  .cbu-toolbar-left,
  .cbu-toolbar-right {
    flex-direction: column;
    width: 100%;
  }
  
  .cbu-search-input {
    width: 100%;
  }
  
  .cbu-filter-controls {
    width: 100%;
  }
  
  .cbu-select {
    flex: 1;
  }
  
  .cbu-bulk-actions {
    width: 100%;
    justify-content: center;
  }
  
  .cbu-table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .cbu-table {
    min-width: 600px;
  }
  
  .cbu-pagination {
    flex-direction: column;
    gap: var(--cbu-space-3);
    text-align: center;
  }
  
  .cbu-modal {
    margin: var(--cbu-space-4);
    max-width: none;
  }
  
  .cbu-toast-container {
    top: var(--cbu-space-4);
    right: var(--cbu-space-4);
    left: var(--cbu-space-4);
    max-width: none;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .cbu-header-title h1 {
    font-size: var(--cbu-font-size-2xl);
  }
  
  .cbu-subtitle {
    font-size: var(--cbu-font-size-base);
  }
  
  .cbu-status-card {
    padding: var(--cbu-space-4);
  }
  
  .cbu-status-icon {
    width: 40px;
    height: 40px;
  }
  
  .cbu-nav-tabs {
    gap: 0;
  }
  
  .cbu-nav-tab {
    flex: 1;
    text-align: center;
    padding: var(--cbu-space-3) var(--cbu-space-2);
  }
  
  .cbu-nav-tab span:not(.cbu-tab-badge):not(.dashicons) {
    display: none;
  }
}

/* ==========================================
   ACCESSIBILITY ENHANCEMENTS
   ========================================== */

/* Focus Styles */
.cbu-nav-tab:focus,
.cbu-search-input:focus,
.cbu-select:focus,
.cbu-checkbox-label:focus-within .cbu-checkbox-custom,
.cbu-toggle-button:focus,
.cbu-pagination-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 115, 170, 0.1);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --cbu-border-color: #000000;
    --cbu-border-color-hover: #000000;
    --cbu-gray-600: #000000;
    --cbu-gray-700: #000000;
    --cbu-gray-900: #000000;
  }
}

/* Reduced Motion Support */
@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;
  }
  
  .cbu-loading-spinner {
    animation: none;
  }
}

/* ==========================================
   PRINT STYLES
   ========================================== */

@media print {
  .cbu-header-actions,
  .cbu-toolbar,
  .cbu-nav-tabs,
  .cbu-pagination,
  .cbu-modal-backdrop,
  .cbu-toast-container,
  .cbu-loading-overlay {
    display: none !important;
  }
  
  .care-book-ultimate-admin {
    background: white !important;
    color: black !important;
  }
  
  .cbu-table-container {
    box-shadow: none;
    border: 1px solid #000;
  }
  
  .cbu-table th,
  .cbu-table td {
    border-bottom: 1px solid #000;
  }
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

/* Spacing Utilities */
.cbu-m-0 { margin: 0 !important; }
.cbu-mt-4 { margin-top: var(--cbu-space-4) !important; }
.cbu-mb-4 { margin-bottom: var(--cbu-space-4) !important; }
.cbu-p-4 { padding: var(--cbu-space-4) !important; }

/* Text Utilities */
.cbu-text-center { text-align: center !important; }
.cbu-text-right { text-align: right !important; }
.cbu-font-semibold { font-weight: var(--cbu-font-weight-semibold) !important; }
.cbu-text-sm { font-size: var(--cbu-font-size-sm) !important; }

/* Color Utilities */
.cbu-text-gray-600 { color: var(--cbu-gray-600) !important; }
.cbu-text-primary { color: var(--cbu-primary) !important; }
.cbu-text-success { color: var(--cbu-success) !important; }
.cbu-text-error { color: var(--cbu-error) !important; }

/* Display Utilities */
.cbu-hidden { display: none !important; }
.cbu-block { display: block !important; }
.cbu-flex { display: flex !important; }
.cbu-grid { display: grid !important; }

/* Position Utilities */
.cbu-relative { position: relative !important; }
.cbu-absolute { position: absolute !important; }
.cbu-fixed { position: fixed !important; }

/* Flexbox Utilities */
.cbu-justify-between { justify-content: space-between !important; }
.cbu-justify-center { justify-content: center !important; }
.cbu-items-center { align-items: center !important; }
.cbu-items-start { align-items: flex-start !important; }

/* Border Utilities */
.cbu-border { border: var(--cbu-border-width) solid var(--cbu-border-color) !important; }
.cbu-border-t { border-top: var(--cbu-border-width) solid var(--cbu-border-color) !important; }
.cbu-rounded { border-radius: var(--cbu-radius) !important; }
.cbu-rounded-lg { border-radius: var(--cbu-radius-lg) !important; }

/* Shadow Utilities */
.cbu-shadow { box-shadow: var(--cbu-shadow) !important; }
.cbu-shadow-md { box-shadow: var(--cbu-shadow-md) !important; }
.cbu-shadow-lg { box-shadow: var(--cbu-shadow-lg) !important; }