@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Brand Colors — overridden dynamically by JS from DB */
:root {
  --color-primary: #2563EB;
  --color-primary-light: color-mix(in srgb, var(--color-primary) 15%, white);
  --color-primary-dark: color-mix(in srgb, var(--color-primary) 80%, black);
  --color-secondary: #1E40AF;
  --color-accent: #F59E0B;
  --color-accent-light: color-mix(in srgb, var(--color-accent) 15%, white);
  
  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  
  /* Semantic */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-danger: #EF4444;
  --color-danger-light: #FEE2E2;
  --color-info: #3B82F6;
  --color-info-light: #DBEAFE;
  
  /* Layout */
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 70px;
  --header-height: 64px;
  --footer-height: 56px;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  
  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 10px 10px -5px rgba(0,0,0,0.03);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* 1. CSS RESET + BASE */

*, *::before, *::after {
  box-sizing: border-box;
}

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-gray-50);
  color: var(--color-gray-900);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

/* 2. APP SHELL LAYOUT */
.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: width var(--transition-base), left var(--transition-base);
  z-index: 200;
  overflow-y: auto;
  overflow-x: hidden;
}

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

.main-content {
  margin-left: var(--sidebar-width);
  transition: margin-left var(--transition-base);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

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

.page-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  margin-top: var(--header-height);
}

.header {
  position: fixed;
  top: 0;
  right: 0;
  left: var(--sidebar-width);
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 100;
  transition: left var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid var(--color-gray-200);
}

.sidebar.collapsed + .main-content .header,
.main-content.sidebar-collapsed .header,
.sidebar-collapsed .header {
  left: var(--sidebar-collapsed-width);
}

/* 3. SIDEBAR STYLES */
.sidebar-logo {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-gray-200);
  height: var(--header-height);
}

.sidebar-logo img {
  height: 36px;
  margin-right: 12px;
}

.sidebar-logo .logo-text {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  white-space: nowrap;
}

.sidebar-nav {
  padding: 16px 0;
}

.nav-section-title {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-400);
  padding: 8px 20px;
  margin-top: 16px;
  font-weight: 600;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  margin: 2px 12px;
  border-radius: var(--radius-md);
  color: var(--color-gray-600);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

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

.nav-item.active {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.nav-item .nav-icon {
  width: 20px;
  flex-shrink: 0;
  margin-right: 12px;
  display: flex;
  justify-content: center;
}

.nav-item .nav-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: opacity var(--transition-fast);
  white-space: nowrap;
}

.sidebar.collapsed .nav-section-title {
  display: none;
}

.sidebar.collapsed .nav-item {
  padding: 10px;
  justify-content: center;
}

.sidebar.collapsed .nav-item .nav-icon {
  margin-right: 0;
}

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

.sidebar.collapsed .sidebar-logo .logo-text {
  display: none;
}

.sidebar-footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  border-top: 1px solid var(--color-gray-200);
  padding: 16px;
  background-color: var(--color-white);
}

/* 4. HEADER STYLES */
.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hamburger-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-gray-600);
  transition: background-color var(--transition-fast);
}

.hamburger-btn:hover {
  background-color: var(--color-gray-100);
}

.search-bar {
  display: flex;
  align-items: center;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  width: 280px;
}

.search-bar svg {
  color: var(--color-gray-500);
  margin-right: 8px;
}

.search-bar input {
  background: transparent;
  border: none;
  outline: none;
  font-size: var(--font-size-sm);
  width: 100%;
  color: var(--color-gray-700);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-gray-600);
  transition: background-color var(--transition-fast);
  position: relative;
}

.icon-btn:hover {
  background-color: var(--color-gray-100);
}

.notification-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--color-danger);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.user-menu:hover {
  background-color: var(--color-gray-100);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-info .name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-gray-800);
  line-height: 1.2;
}

.user-info .role {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  line-height: 1.2;
}

/* 5. PAGE HEADER */
.page-header {
  margin-bottom: 24px;
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 4px;
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb-separator {
  color: var(--color-gray-300);
}

/* 6. CARDS */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
  display: flex;
  flex-direction: column;
  margin-bottom: 24px;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-800);
}

.card-body {
  padding: 24px;
  flex: 1;
}

.card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-gray-100);
  background-color: var(--color-gray-50);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.stat-card {
  cursor: default;
}

.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 24px;
}

.stat-card .stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-gray-900);
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-top: 4px;
}

.stat-card .stat-change {
  font-size: var(--font-size-xs);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
}

.stat-card.primary .stat-icon {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.stat-card.success .stat-icon {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.stat-card.warning .stat-icon {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.stat-card.danger .stat-icon {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
}

/* 7. QUICK ACTION CARDS */
.quick-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.quick-action-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
  border: 2px solid transparent;
}

.quick-action-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary-light);
}

.quick-action-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  margin: 0 auto 12px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
}

.quick-action-label {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
}

/* 8. BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  outline: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

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

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-200);
}

.btn-secondary:hover {
  background-color: var(--color-gray-50);
}

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

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

.btn-warning {
  background-color: var(--color-warning);
  color: var(--color-white);
}

.btn-sm {
  padding: 6px 14px;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 14px 28px;
  font-size: var(--font-size-base);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

/* 9. FORMS */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
}

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

.form-control,
.form-select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  outline: none;
  transition: all var(--transition-fast);
  background-color: var(--color-white);
  color: var(--color-gray-900);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-control.is-invalid,
.form-select.is-invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger-light);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

.form-section {
  margin-bottom: 32px;
}

.form-section-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-800);
  margin-bottom: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-section-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: 20px;
}

select.form-control,
select.form-select,
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236B7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

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

.form-actions {
  display: flex;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--color-gray-200);
  margin-top: 8px;
}

/* 10. TABLES */
.table-container {
  overflow-x: auto;
}

.table-toolbar {
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.table-search {
  display: flex;
  align-items: center;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  width: 240px;
}

.table-search svg {
  color: var(--color-gray-500);
  margin-right: 8px;
}

.table-search input {
  background: transparent;
  border: none;
  outline: none;
  font-size: var(--font-size-sm);
  width: 100%;
}

.table-actions {
  display: flex;
  gap: 8px;
}

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

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

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-gray-200);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}

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

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

.data-table .actions-cell {
  display: flex;
  gap: 6px;
}

.table-footer {
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-gray-100);
}

.pagination {
  display: flex;
  gap: 4px;
  align-items: center;
}

.page-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-gray-200);
  cursor: pointer;
  background-color: var(--color-white);
  color: var(--color-gray-700);
  transition: all var(--transition-fast);
}

.page-btn:hover {
  background-color: var(--color-gray-100);
}

.page-btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.page-info {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.bulk-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  background-color: var(--color-primary-light);
  border-bottom: 1px solid var(--color-gray-200);
}

/* 11. BADGES / STATUS */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

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

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

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

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

.badge-gray {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* 12. ALERTS / NOTIFICATIONS */
.alert {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  font-size: var(--font-size-sm);
}

.alert-success {
  background-color: var(--color-success-light);
  color: var(--color-success);
  border-left: 4px solid var(--color-success);
}

.alert-danger {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
  border-left: 4px solid var(--color-danger);
}

.alert-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
  border-left: 4px solid var(--color-warning);
}

.alert-info {
  background-color: var(--color-info-light);
  color: var(--color-info);
  border-left: 4px solid var(--color-info);
}

/* 13. MODAL */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
  padding: 20px;
}

.modal-overlay.active {
  display: flex !important;
}

.modal-overlay .modal {
  position: relative !important;
  top: auto !important;
  left: auto !important;
  right: auto !important;
  bottom: auto !important;
  height: auto !important;
  max-height: 90vh !important;
  display: flex !important;
  flex-direction: column !important;
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 600px;
  animation: slideUp 200ms ease-out;
  margin: auto !important;
  overflow: hidden !important;
}

.modal-overlay .modal form {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.modal-overlay .modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.modal-overlay .modal-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-gray-900);
}

.modal-overlay .modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-overlay .modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  flex-shrink: 0;
  background-color: var(--color-white);
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* 14. COLOR PICKER */
.color-picker-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.color-preview {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  cursor: pointer;
}

.color-input {
  width: 120px;
}

/* 15. AVATAR */
.avatar {
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  overflow: hidden;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.avatar-sm { width: 28px; height: 28px; font-size: var(--font-size-xs); }
.avatar-md { width: 36px; height: 36px; font-size: var(--font-size-sm); }
.avatar-lg { width: 48px; height: 48px; font-size: var(--font-size-base); }
.avatar-xl { width: 64px; height: 64px; font-size: var(--font-size-lg); }

/* 16. DROPDOWN */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-100);
  min-width: 180px;
  z-index: 200;
  display: none;
}

.dropdown-menu.active {
  display: block;
  animation: fadeIn 150ms ease-out;
}

.dropdown-item {
  padding: 10px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.dropdown-item:hover {
  background-color: var(--color-gray-50);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--color-gray-100);
  margin: 4px 0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 17. EMPTY STATE */
.empty-state {
  text-align: center;
  padding: 64px 24px;
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background-color: var(--color-gray-100);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  color: var(--color-gray-400);
}

.empty-state-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: 8px;
}

.empty-state-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  margin-bottom: 24px;
}

/* 18. LOADING */
.spinner {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  animation: spin 600ms linear infinite;
}

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

.loading-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.8);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}

.loading-overlay.active {
  display: flex;
}

.skeleton {
  background-color: var(--color-gray-200);
  border-radius: var(--radius-sm);
  animation: pulse 1.5s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}


/* 19. RESPONSIVE — COMPLETE SYSTEM */

/* ── Global overflow guard ── */
html, body {
  max-width: 100%;
  overflow-x: hidden;
}

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

/* ── App shell ── */
.main-content {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
  margin-left: var(--sidebar-width);
  transition: margin-left var(--transition-base);
}

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

.page-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  margin-top: var(--header-height);
}

/* ── Tablet <= 1024px: sidebar becomes slide-out drawer ── */
@media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    left: calc(-1 * var(--sidebar-width));
    z-index: 300;
    transition: left var(--transition-base), width var(--transition-base);
    width: var(--sidebar-width) !important;
  }

  .sidebar.mobile-open {
    left: 0;
  }

  .main-content,
  .main-content.sidebar-collapsed {
    margin-left: 0 !important;
  }

  .header {
    left: 0 !important;
  }

  .mobile-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 299;
    display: none;
  }

  .mobile-overlay.active {
    display: block;
  }
}

/* ── <= 900px ── */
@media (max-width: 900px) {
  .page-content {
    padding: 20px;
  }

  .card-header {
    padding: 16px 20px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .card-body {
    padding: 20px;
  }

  .table-toolbar {
    padding: 12px 16px;
  }

  .table-search {
    width: 100%;
    max-width: 100%;
  }

  .table-actions {
    flex-wrap: wrap;
  }

  .two-col-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ── <= 768px ── */
@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .page-content {
    padding: 16px;
  }

  .form-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .quick-action-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
  }

  .stat-card .stat-value {
    font-size: var(--font-size-2xl);
  }

  .table-footer {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
    padding: 12px 16px;
  }

  .modal {
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
  }

  .search-bar {
    max-width: 200px;
  }

  .card-title {
    font-size: var(--font-size-base);
  }

  .form-actions {
    flex-wrap: wrap;
  }

  .breadcrumb {
    flex-wrap: wrap;
    row-gap: 4px;
  }
}

/* ── <= 576px mobile ── */
@media (max-width: 576px) {
  .page-content {
    padding: 12px;
  }

  .form-grid {
    grid-template-columns: 1fr !important;
    gap: 14px;
  }

  .form-group {
    grid-column: 1 / -1;
  }

  .card-header {
    padding: 14px 16px;
  }

  .card-body {
    padding: 16px;
  }

  .card-footer {
    padding: 12px 16px;
  }

  .stat-card .stat-value {
    font-size: var(--font-size-xl);
  }

  .stat-card .stat-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
    margin-bottom: 12px;
  }

  .quick-action-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .quick-action-card {
    padding: 16px 10px;
  }

  .quick-action-icon {
    width: 44px;
    height: 44px;
    font-size: var(--font-size-lg);
  }

  .search-bar {
    display: none;
  }

  .btn {
    padding: 9px 16px;
    font-size: var(--font-size-xs);
  }

  .btn-lg {
    padding: 11px 20px;
    font-size: var(--font-size-sm);
  }

  .table-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px;
  }

  .table-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
  }

  .page-btn {
    width: 28px;
    height: 28px;
  }

  /* Modal bottom sheet */
  .modal-overlay.active {
    align-items: flex-end;
  }

  .modal {
    width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUpMobile 250ms ease-out;
  }

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

  .alert { flex-wrap: wrap; }

  .bulk-actions {
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 12px;
  }

  .empty-state {
    padding: 40px 16px;
  }

  /* Touch target minimum */
  .btn, .page-btn, .icon-btn, .hamburger-btn {
    min-height: 44px;
  }

  .btn-sm {
    min-height: 36px;
    padding: 8px 14px;
  }

  .nav-item {
    padding: 12px 20px;
    min-height: 48px;
  }

  header {
    padding: 10px 12px !important;
  }

  .color-picker-group {
    flex-wrap: wrap;
  }

  .color-input {
    width: 100%;
  }
}

/* ── <= 414px ── */
@media (max-width: 414px) {
  .page-content {
    padding: 10px;
  }

  .card-body {
    padding: 14px;
  }

  .sidebar {
    max-width: 300px;
  }

  .pagination {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ── <= 360px ── */
@media (max-width: 360px) {
  .page-content {
    padding: 8px;
  }

  .quick-action-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .quick-action-card {
    padding: 12px 8px;
  }

  .quick-action-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 8px;
  }

  .quick-action-label {
    font-size: var(--font-size-xs);
  }

  .card-header, .card-body {
    padding: 12px;
  }
}

/* ── >= 1440px ── */
@media (min-width: 1440px) {
  .page-content {
    padding: 32px;
  }
}

/* ── >= 1920px ── */
@media (min-width: 1920px) {
  .page-content {
    padding: 40px;
  }
}

/* ── Visibility helpers ── */
@media (max-width: 576px)  { .hide-mobile  { display: none !important; } }
@media (max-width: 768px)  { .hide-tablet  { display: none !important; } }
@media (min-width: 577px)  { .show-mobile-only { display: none !important; } }

/* ── Responsive grid utilities ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: 24px;
}

.permissions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr));
  gap: 12px;
}

/* 20. UTILITY CLASSES */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

.text-xs   { font-size: var(--font-size-xs); }
.text-sm   { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg   { font-size: var(--font-size-lg); }
.text-xl   { font-size: var(--font-size-xl); }
.text-2xl  { font-size: var(--font-size-2xl); }
.text-3xl  { font-size: var(--font-size-3xl); }

.font-normal   { font-weight: 400; }
.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }

.text-primary  { color: var(--color-primary); }
.text-success  { color: var(--color-success); }
.text-danger   { color: var(--color-danger); }
.text-warning  { color: var(--color-warning); }
.text-gray-500 { color: var(--color-gray-500); }
.text-gray-700 { color: var(--color-gray-700); }
.text-gray-900 { color: var(--color-gray-900); }

.bg-primary-light { background-color: var(--color-primary-light); }
.bg-success-light { background-color: var(--color-success-light); }
.bg-danger-light  { background-color: var(--color-danger-light); }
.bg-warning-light { background-color: var(--color-warning-light); }

.rounded-sm   { border-radius: var(--radius-sm); }
.rounded-md   { border-radius: var(--radius-md); }
.rounded-lg   { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }

.p-4  { padding: 1rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }

.hidden      { display: none !important; }
.block       { display: block; }
.inline-flex { display: inline-flex; }

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

.border        { border: 1px solid var(--color-gray-200); }
.border-top    { border-top: 1px solid var(--color-gray-200); }
.border-bottom { border-bottom: 1px solid var(--color-gray-200); }

/* ── Bootstrap Grid & Responsive Helpers Compatibility ── */
.container-fluid, .container {
  width: 100%;
  max-width: 100%;
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: -12px;
  margin-right: -12px;
}

.row > [class*="col-"] {
  padding-left: 12px;
  padding-right: 12px;
  width: 100%;
  box-sizing: border-box;
}

@media (min-width: 769px) {
  .col-md-12 { flex: 0 0 100%; max-width: 100%; }
  .col-md-8  { flex: 0 0 66.666667%; max-width: 66.666667%; }
  .col-md-6  { flex: 0 0 50%; max-width: 50%; }
  .col-md-4  { flex: 0 0 33.333333%; max-width: 33.333333%; }
  .col-md-3  { flex: 0 0 25%; max-width: 25%; }
}

@media (max-width: 768px) {
  .row > [class*="col-"] {
    flex: 0 0 100%;
    max-width: 100%;
    margin-bottom: 12px;
  }
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.d-flex { display: flex !important; }
.flex-wrap { flex-wrap: wrap !important; }
.justify-content-between { justify-content: space-between !important; }
.align-items-center { align-items: center !important; }
.text-end { text-align: right !important; }

/* ── Additional Utility & Tailwind Compatibility Classes ── */
.overflow-x-auto {
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch;
}

.sticky { position: sticky !important; }
.left-0 { left: 0 !important; }
.z-10 { z-index: 10 !important; }
.min-w-full { min-width: 100% !important; }
.w-64 { width: 16rem !important; }
.whitespace-nowrap { white-space: nowrap !important; }
.writing-mode-vertical {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }
.text-muted { color: var(--color-gray-500) !important; }
.text-white { color: #ffffff !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-3 { margin-bottom: 0.75rem !important; }
.mb-6 { margin-bottom: 1.5rem !important; }

.p-3 { padding: 0.75rem !important; }
.px-6 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 0.75rem !important; padding-bottom: 0.75rem !important; }
.py-4 { padding-top: 1rem !important; padding-bottom: 1rem !important; }

.bg-white { background-color: #ffffff !important; }
.bg-gray-50 { background-color: var(--color-gray-50) !important; }
.bg-gray-100 { background-color: var(--color-gray-100) !important; }
.bg-light { background-color: var(--color-gray-50) !important; }

.divide-y > * + * {
  border-top-width: 1px;
  border-top-style: solid;
  border-top-color: var(--color-gray-200);
}

/* ── Bootstrap Modal Compatibility for small screens ── */
.modal-dialog {
  width: 100%;
  max-width: 520px;
  margin: 1.75rem auto;
}

@media (max-width: 576px) {
  .modal-dialog {
    max-width: 100% !important;
    margin: 0 !important;
  }
  .modal-content {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
  }
  .w-64 {
    width: 10rem !important;
  }
}

/* ── Override inline 4-column grids on mobile ── */
@media (max-width: 768px) {
  [style*="grid-template-columns:repeat(4,1fr)"],
  [style*="grid-template-columns: repeat(4, 1fr)"],
  [style*="grid-template-columns:repeat(4, 1fr)"],
  [style*="grid-template-columns: repeat(4,1fr)"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 480px) {
  [style*="grid-template-columns:repeat(4,1fr)"],
  [style*="grid-template-columns: repeat(4, 1fr)"],
  [style*="grid-template-columns:repeat(4, 1fr)"],
  [style*="grid-template-columns: repeat(4,1fr)"] {
    grid-template-columns: 1fr !important;
  }
}

/* ── Mobile flex filter row auto-stack ── */
@media (max-width: 576px) {
  form[style*="display:flex"],
  form[style*="display: flex"] {
    flex-direction: column !important;
    align-items: stretch !important;
  }

  form[style*="display:flex"] > .form-group,
  form[style*="display: flex"] > .form-group,
  form[style*="display:flex"] > div,
  form[style*="display: flex"] > div {
    width: 100% !important;
    min-width: 100% !important;
  }
}

/* Modal Popup Scrollability & Layout Fixes */
.modal-overlay {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  background-color: rgba(0,0,0,0.5) !important;
  z-index: 1050 !important;
  display: none;
  align-items: center !important;
  justify-content: center !important;
  overflow-y: auto !important;
  padding: 20px !important;
  box-sizing: border-box !important;
}

.modal-overlay.active {
  display: flex !important;
}

.modal-overlay .modal {
  position: relative !important;
  top: auto !important;
  left: auto !important;
  right: auto !important;
  bottom: auto !important;
  width: 100% !important;
  max-width: 600px !important;
  max-height: 85vh !important;
  display: flex !important;
  flex-direction: column !important;
  background: #ffffff !important;
  border-radius: var(--radius-xl, 16px) !important;
  box-shadow: 0 20px 50px rgba(0,0,0,0.2) !important;
  margin: auto !important;
  overflow: hidden !important;
}

.modal-overlay .modal form {
  display: flex !important;
  flex-direction: column !important;
  flex: 1 1 auto !important;
  min-height: 0 !important;
  overflow: hidden !important;
  margin: 0 !important;
}

.modal-overlay .modal-header {
  flex-shrink: 0 !important;
  padding: 20px 24px !important;
  border-bottom: 1px solid var(--color-gray-100, #e5e7eb) !important;
}

.modal-overlay .modal-body {
  flex: 1 1 auto !important;
  overflow-y: auto !important;
  padding: 24px !important;
  max-height: calc(85vh - 130px) !important;
}

.modal-overlay .modal-footer {
  flex-shrink: 0 !important;
  padding: 16px 24px !important;
  border-top: 1px solid var(--color-gray-100, #e5e7eb) !important;
  background-color: #ffffff !important;
}