/*
 * Platform Utilities - Component Styles
 * Reusable component styles: buttons, tables, modals, forms
 * Version: 1.0.0
 */

/* 
 * Component-specific CSS variables are now defined in layout.css
 * This file focuses on component styles only
 * 
 * NAMING CONVENTIONS:
 * - Buttons: Non-BEM (.btn-primary, .btn-secondary)
 * - Forms: BEM (.form-input--error, .form-label--required) 
 * - Modals: BEM (.modal__header, .modal__content)
 * - Complex components: BEM for internal structure
 * - Simple utilities: Non-BEM (.text-center, .p-4)
 */

/* Professional Modern Minimalist Button System */
.btn {
  /* Layout */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  
  /* Spacing - Generous but not chunky */
  padding: var(--space-2) var(--space-4);
  min-height: 2.5rem; /* 40px - comfortable touch target */
  
  /* Typography */
  font-family: var(--font-family-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
  
  /* Visual Design */
  border: none;
  border-radius: var(--radius-lg);
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  
  /* Interactions */
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  outline: none;
  position: relative;
  
  /* Smooth, professional transitions (paint-safe properties only) */
  transition: background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1),
              color 0.15s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.15s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.15s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Button States - Modern, subtle interactions */
.btn:hover:not(:disabled) {
  background: var(--color-surface);
  transform: translateY(-1px);
  box-shadow: var(--shadow-xs);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  background: var(--color-surface-subtle) !important;
  color: var(--color-text-secondary) !important;
  border-color: var(--color-border) !important;
}

/* Button Variants - Professional Modern Design */

/* Primary - Strong call-to-action */
.btn-primary {
  background: var(--color-brand);
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-medium);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-brand-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-xs);
}

.btn-primary:active:not(:disabled) {
  background: var(--color-brand-darker);
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

/* Secondary - Subtle elevated */
.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:active:not(:disabled) {
  background: var(--color-surface-subtle);
  transform: translateY(0);
}

/* Ghost - Minimal, text-like */
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-normal);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  transform: translateY(-1px);
}

.btn-ghost:active:not(:disabled) {
  background: var(--color-surface);
  transform: translateY(0);
}

/* Link - Ultra minimal */
.btn-link {
  background: transparent;
  color: var(--color-brand);
  font-weight: var(--font-weight-normal);
  padding: var(--space-1) var(--space-2);
  min-height: auto;
}

.btn-link:hover:not(:disabled) {
  color: var(--color-brand-dark);
  background: var(--color-brand-subtle);
  transform: translateY(-1px);
}

/* Destructive - Error actions */
.btn-destructive,
.btn-danger {
  background: var(--color-error);
  color: var(--color-text-inverse);
}

.btn-destructive:hover:not(:disabled),
.btn-danger:hover:not(:disabled) {
  background: var(--color-error-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-xs);
}

.btn-destructive:active:not(:disabled),
.btn-danger:active:not(:disabled) {
  background: var(--color-error-dark);
  transform: translateY(0);
}

/* Outline variants */
.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-surface-elevated);
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
}

.btn-outline-primary {
  background: transparent;
  color: var(--color-brand);
  border: 1px solid var(--color-brand);
}

.btn-outline-primary:hover:not(:disabled) {
  background: var(--color-brand);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-xs);
}

/* Button Sizes - Professional Proportions */
.btn-sm {
  padding: var(--space-1) var(--space-3);
  min-height: 2rem; /* 32px */
  font-size: var(--text-xs);
  gap: var(--space-1);
  border-radius: var(--radius-md);
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  min-height: 3rem; /* 48px */
  font-size: var(--text-base);
  gap: var(--space-2);
  border-radius: var(--radius-xl);
  font-weight: var(--font-weight-medium);
}

/* Icon-only buttons */
.btn-icon {
  padding: var(--space-2);
  min-height: 2.5rem;
  width: 2.5rem;
  border-radius: var(--radius-lg);
}

.btn-icon.btn-sm {
  padding: var(--space-1);
  min-height: 2rem;
  width: 2rem;
  border-radius: var(--radius-md);
}

.btn-icon.btn-lg {
  padding: var(--space-3);
  min-height: 3rem;
  width: 3rem;
  border-radius: var(--radius-xl);
}


/* Modern Form System - Consolidated and Standardized */
.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-16);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  line-height: 1.4;
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-base);
  font-family: var(--font-family-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-elevated);
  transition: background-color var(--transition-duration),
              color var(--transition-duration),
              border-color var(--transition-duration),
              box-shadow var(--transition-duration);
  outline: none;
  line-height: var(--line-height-normal);
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background-color: var(--color-surface);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
}

/* Form Input States - BEM Convention */
.form-input--error {
  border-color: var(--color-error);
}

.form-input--error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-subtle);
}

.form-input--success {
  border-color: var(--color-success);
}

.form-input--success:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-subtle);
}

/* Legacy Support - Non-BEM Aliases (Deprecated - Use BEM versions above) */
.form-input-error {
  border-color: var(--color-error);
}

.form-input-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-subtle);
}

.form-input-success {
  border-color: var(--color-success);
}

.form-input-success:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-subtle);
}

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

.form-error {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-4);
  color: var(--color-error);
  font-size: var(--font-size-sm);
}

.form-help {
  margin-top: var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

.form-row {
  display: flex;
  gap: var(--space-12);
}

.form-row .form-field {
  flex: 1;
}

/* Table Components */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th,
.table td {
  padding: var(--space-4) var(--space-8);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

.table th {
  background-color: var(--color-gray-50);
  font-weight: 600;
  color: var(--color-gray-700);
}

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

.table-striped tbody tr:nth-child(even) {
  background-color: var(--color-gray-50);
}

/* Modal Components */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background-color: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  margin: var(--space-8);
}

.modal-header {
  padding: var(--space-12);
  border-bottom: 1px solid var(--color-gray-200);
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin: 0;
}

.modal-body {
  padding: var(--space-12);
}

.modal-footer {
  padding: var(--space-12);
  border-top: 1px solid var(--color-gray-200);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-4);
}

/* Modern Card System */
.card {
  background-color: var(--color-surface-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-subtle);
  overflow: hidden;
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border-subtle);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin: 0;
  line-height: 1.3;
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
}

/* Modern Alert System */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  font-size: var(--text-sm);
  line-height: 1.5;
}

.alert-success {
  background-color: var(--color-success-subtle);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert-warning {
  background-color: var(--color-warning-subtle);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.alert-error {
  background-color: var(--color-error-subtle);
  border-color: var(--color-error);
  color: var(--color-error);
}

.alert-info {
  background-color: var(--color-brand-subtle);
  border-color: var(--color-brand);
  color: var(--color-brand);
}

/* All utility classes are now defined in layout.css */

/* ==========================================================================
   WEB APP COMPONENTS - Navigation, Data Display, Feedback
   ========================================================================== */

/* Component variables are now defined in layout.css */

/* ==========================================================================
   NAVIGATION COMPONENTS
   ========================================================================== */

/* Sidebar Navigation */
.sidebar-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-surface-elevated);
  border-right: 1px solid var(--color-border);
  transform: translateX(-100%);
  transition: transform var(--transition-duration);
  z-index: var(--z-index-sidebar);
  overflow-y: auto;
}

.sidebar-nav.open {
  transform: translateX(0);
}

.sidebar-nav__header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
}

.sidebar-nav__toggle {
  display: none;
  position: fixed;
  top: var(--space-16);
  left: var(--space-16);
  z-index: var(--z-index-sidebar-toggle);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  cursor: pointer;
}

.sidebar-nav__menu {
  padding: var(--space-8);
}

.sidebar-nav__item {
  margin-bottom: var(--space-2);
}

.sidebar-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background-color var(--transition-duration),
              color var(--transition-duration),
              border-color var(--transition-duration),
              box-shadow var(--transition-duration),
              transform var(--transition-duration);
}

.sidebar-nav__link:hover {
  background: var(--color-hover);
  color: var(--color-text-primary);
}

.sidebar-nav__link.active {
  background: var(--color-brand-subtle);
  color: var(--color-brand);
  font-weight: var(--font-weight-medium);
}

.sidebar-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-index-overlay);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-duration);
}

.sidebar-nav__overlay.visible {
  opacity: 1;
  visibility: visible;
}

/* Top Navigation */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-12) var(--space-16);
  background: var(--color-surface-elevated);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-index-header);
}

.top-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.top-nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

.top-nav__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-6) var(--space-8);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-duration),
              color var(--transition-duration);
}

.top-nav__link:hover {
  color: var(--color-text-primary);
  background: var(--color-hover);
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

.breadcrumbs__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-duration);
}

.breadcrumbs__link:hover {
  color: var(--color-brand);
}

.breadcrumbs__separator {
  opacity: 0.5;
}

/* Tabs */
.tabs {
  display: flex;
  flex-direction: column;
}

.tabs__list {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}

.tabs__tab {
  padding: var(--space-3) var(--space-4);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-duration),
              color var(--transition-duration),
              border-color var(--transition-duration);
}

.tabs__tab:hover {
  color: var(--color-text-primary);
  background: var(--color-hover);
}

.tabs__tab.active {
  color: var(--color-brand);
  border-bottom-color: var(--color-brand);
}

.tabs__panel {
  padding: var(--space-4);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  justify-content: center;
}

.pagination__item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: var(--space-6) var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-duration);
  cursor: pointer;
}

.pagination__item:hover:not(.disabled) {
  background: var(--color-hover);
  color: var(--color-text-primary);
}

.pagination__item.active {
  background: var(--color-brand);
  border-color: var(--color-brand);
  color: white;
}

.pagination__item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================================================
   DATA DISPLAY COMPONENTS
   ========================================================================== */

/* Data Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

/* Data table inside card - remove redundant styling and ensure proper spacing */
.card .data-table,
.card-body .data-table,
.card__content .data-table {
  box-shadow: none;
  border-radius: 0;
  background: transparent;
}

/* Add padding when data-table is direct child of card (not wrapped in card-body) */
.card > .data-table {
  margin: var(--space-6);
  width: calc(100% - var(--space-12));
}

.data-table__header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.data-table thead th,
.data-table__header th {
  padding: var(--space-3) var(--space-6) !important;
  text-align: left;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  user-select: none;
  position: relative;
}

.data-table__header th:hover {
  background: var(--color-hover);
}

.data-table__header th.sortable::after {
  content: '';
  position: absolute;
  right: var(--space-8);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 4px solid var(--color-text-tertiary);
  opacity: 0.5;
}

.data-table__header th.sorted-asc::after {
  border-bottom: 4px solid var(--color-brand);
  opacity: 1;
}

.data-table__header th.sorted-desc::after {
  border-bottom: none;
  border-top: 4px solid var(--color-brand);
  opacity: 1;
}

.data-table tbody td,
.data-table__body td {
  padding: var(--space-3) var(--space-6) !important;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
}

.data-table__row:hover {
  background: var(--color-hover);
}

.data-table__row.selected {
  background: var(--color-brand-subtle);
}

.data-table__cell--actions {
  text-align: right;
  white-space: nowrap;
}

/* Card List */
.card-list {
  display: grid;
  gap: var(--space-16);
}

.card-list--grid {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.card-list--masonry {
  columns: 3;
  column-gap: var(--space-16);
}

.card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-duration);
  break-inside: avoid;
  margin-bottom: var(--space-16);
}

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

.card__header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin: 0;
}

.card__content {
  padding: var(--space-4);
}

.card__footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
}

/* Progress Indicators */
.progress {
  width: 100%;
  height: 8px;
  background: var(--color-border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background: var(--color-brand);
  transition: width 0.3s ease;
  border-radius: var(--radius-lg);
}

.progress--sm {
  height: 4px;
}

.progress--lg {
  height: 12px;
}

.progress-circle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.progress-circle__track {
  fill: none;
  stroke: var(--color-border-subtle);
  stroke-width: 4;
}

.progress-circle__bar {
  fill: none;
  stroke: var(--color-brand);
  stroke-width: 4;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.3s ease;
}

.progress-circle__text {
  position: absolute;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

/* Dashboard Components */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-16);
}

.stat-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  transition: background-color 0.2s ease,
              color 0.2s ease,
              border-color 0.2s ease,
              box-shadow 0.2s ease,
              transform 0.2s ease;
}

.stat-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.stat-card__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stat-card__info {
  flex: 1;
}

.stat-card__value {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
  line-height: 1.2;
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.stat-card__icon {
  width: 24px;
  height: 24px;
  color: var(--color-brand);
  flex-shrink: 0;
}

.stat-card__change {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  margin-top: var(--space-2);
}

.stat-card__change--positive {
  color: var(--color-success);
}

.stat-card__change--negative {
  color: var(--color-error);
}

.stat-card__change--neutral {
  color: var(--color-text-secondary);
}

/* Dashboard Layout Components */
.dashboard-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.dashboard-header {
  background: var(--color-surface-elevated);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-8) 0;
  flex-shrink: 0;
}

.dashboard-main {
  flex: 1;
  display: flex;
  background: var(--color-surface);
}

.dashboard-sidebar {
  width: 250px;
  background: var(--color-surface-elevated);
  border-right: 1px solid var(--color-border);
  flex-shrink: 0;
}

.dashboard-content {
  flex: 1;
  padding: var(--space-4);
  overflow-y: auto;
}

@media (max-width: 768px) {
  .dashboard-sidebar {
    width: 100%;
    max-width: 250px;
    position: fixed;
    left: -250px;
    top: 60px;
    bottom: 0;
    transition: left 0.3s ease;
    z-index: 999;
  }
  
  .dashboard-sidebar.open {
    left: 0;
  }
  
  .dashboard-content {
    padding: var(--space-8);
  }
}

/* Navigation Components */
.sidebar-nav {
  padding: var(--space-8);
}

.sidebar-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-nav__item {
  list-style: none;
  margin: 0 0 var(--space-2) 0;
}

.sidebar-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  font-size: var(--text-sm);
}

.sidebar-nav__link:hover {
  background: var(--color-hover);
  color: var(--color-text-primary);
}

.sidebar-nav__link.active {
  background: var(--color-brand-subtle);
  color: var(--color-brand);
  font-weight: var(--font-medium);
}

.sidebar-nav__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.page-header__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin: 0;
  color: var(--color-text-primary);
}

.page-header__actions {
  display: flex;
  gap: var(--space-4);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.breadcrumb-nav__item {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.breadcrumb-nav__item:hover {
  color: var(--color-text-primary);
}

.breadcrumb-nav__item.current {
  color: var(--color-text-primary);
  font-weight: var(--font-medium);
}

.breadcrumb-nav__separator {
  color: var(--color-text-tertiary);
}

/* User Components */
.user-avatar {
  width: 32px;
  height: 32px;
  background: var(--color-brand);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.user-avatar--sm {
  width: 24px;
  height: 24px;
  font-size: var(--text-xs);
}

.user-avatar--lg {
  width: 48px;
  height: 48px;
  font-size: var(--text-lg);
}

/* Status Badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
}

.status-badge--sm {
  padding: var(--space-1) var(--space-4);
  font-size: 10px;
}

.status-badge--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-sm);
}

.status-badge--green {
  background: var(--color-success-subtle);
  color: var(--color-success);
}

.status-badge--red {
  background: var(--color-error-subtle);
  color: var(--color-error);
}

.status-badge--yellow {
  background: var(--color-warning-subtle);
  color: var(--color-warning);
}

.status-badge--blue {
  background: var(--color-brand-subtle);
  color: var(--color-brand);
}

.status-badge--gray {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ==========================================================================
   FEEDBACK COMPONENTS
   ========================================================================== */

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-index-modal);
  padding: var(--space-4);
}

.modal {
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 90vw;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal--sm {
  width: 400px;
}

.modal--md {
  width: 600px;
}

.modal--lg {
  width: 800px;
}

.modal--xl {
  width: 1000px;
}

.modal--full {
  width: 90vw;
  height: 90vh;
}

.modal__header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.modal__close {
  background: none;
  border: none;
  padding: var(--space-4);
  cursor: pointer;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-duration),
              color var(--transition-duration),
              border-color var(--transition-duration),
              box-shadow var(--transition-duration);
}

.modal__close:hover {
  background: var(--color-hover);
  color: var(--color-text-primary);
}

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

.modal__footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  gap: var(--space-8);
  justify-content: flex-end;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  z-index: var(--z-index-toast);
  pointer-events: none;
}

.toast-container--top-right {
  top: var(--space-16);
  right: var(--space-16);
}

.toast-container--top-left {
  top: var(--space-16);
  left: var(--space-16);
}

.toast-container--bottom-right {
  bottom: var(--space-16);
  right: var(--space-16);
}

.toast-container--bottom-left {
  bottom: var(--space-16);
  left: var(--space-16);
}

.toast-container--top-center {
  top: var(--space-16);
  left: 50%;
  transform: translateX(-50%);
}

.toast-container--bottom-center {
  bottom: var(--space-16);
  left: 50%;
  transform: translateX(-50%);
}

.toast {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  margin-bottom: var(--space-8);
  max-width: 400px;
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: var(--space-12);
}

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

.toast--error {
  border-left: 4px solid var(--color-error);
}

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

.toast--info {
  border-left: 4px solid var(--color-brand);
}

.toast__icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.toast__content {
  flex: 1;
}

.toast__title {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
  font-size: var(--font-size-sm);
}

.toast__message {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
  line-height: var(--line-height-snug);
}

.toast__close {
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--color-text-tertiary);
  transition: all var(--transition-duration);
  flex-shrink: 0;
}

.toast__close:hover {
  background: var(--color-hover);
  color: var(--color-text-secondary);
}

/* Alert Banners */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert--filled.alert--success {
  background: var(--color-success-subtle);
  border: 1px solid var(--color-success);
  color: var(--color-success);
}

.alert--filled.alert--error {
  background: var(--color-error-subtle);
  border: 1px solid var(--color-error);
  color: var(--color-error);
}

.alert--filled.alert--warning {
  background: var(--color-warning-subtle);
  border: 1px solid var(--color-warning);
  color: var(--color-warning);
}

.alert--filled.alert--info {
  background: var(--color-brand-subtle);
  border: 1px solid var(--color-brand);
  color: var(--color-brand);
}

.alert__icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: var(--font-weight-medium);
  margin: 0 0 var(--space-2) 0;
  font-size: var(--font-size-sm);
}

.alert__message {
  font-size: var(--font-size-sm);
  margin: 0;
  opacity: 0.9;
}

.alert__dismiss {
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  border-radius: var(--radius-sm);
  opacity: 0.7;
  transition: opacity var(--transition-duration);
  flex-shrink: 0;
}

.alert__dismiss:hover {
  opacity: 1;
}

/* Popover */
.popover {
  position: absolute;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-12);
  max-width: 300px;
  z-index: var(--z-index-popover);
}

.popover__title {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-6) 0;
  font-size: var(--font-size-sm);
}

.popover__content {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-snug);
}

/* ==========================================================================
   FORM COMPONENTS
   ========================================================================== */

/* Form Validation */
.form-field {
  margin-bottom: var(--space-16);
}

.form-label {
  display: block;
  margin-bottom: var(--space-4);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

/* Duplicate form definitions removed - consolidated above */

/* Multi-Step Form */
.multistep-form {
  max-width: 600px;
  margin: 0 auto;
}

.multistep-progress {
  margin-bottom: var(--space-24);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-12);
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-brand);
  transition: width 0.3s ease;
  border-radius: var(--radius-lg);
}

.step-indicators {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  position: relative;
  flex: 1;
}

.step-indicator:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  right: -50%;
  height: 2px;
  background: var(--color-border);
  z-index: -1;
}

.step-indicator--completed:not(:last-child)::after {
  background: var(--color-brand);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: 2px solid var(--color-border);
  background: var(--color-surface-elevated);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-duration),
              color var(--transition-duration),
              border-color var(--transition-duration),
              box-shadow var(--transition-duration);
}

.step-indicator--active .step-number {
  border-color: var(--color-brand);
  background: var(--color-brand);
  color: white;
}

.step-indicator--completed .step-number {
  border-color: var(--color-brand);
  background: var(--color-brand);
  color: white;
}

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

.step-indicator--active .step-label {
  color: var(--color-brand);
  font-weight: var(--font-weight-medium);
}

.step-content {
  min-height: 300px;
  padding: var(--space-24) 0;
}

.step-actions {
  display: flex;
  justify-content: space-between;
  gap: var(--space-12);
  margin-top: var(--space-24);
  padding-top: var(--space-24);
  border-top: 1px solid var(--color-border);
}

/* File Upload */
.file-upload {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  text-align: center;
  transition: all var(--transition-duration);
  cursor: pointer;
  background: var(--color-surface);
}

.file-upload:hover {
  border-color: var(--color-brand);
  background: var(--color-brand-subtle);
}

.file-upload--dragging {
  border-color: var(--color-brand);
  background: var(--color-brand-subtle);
  transform: scale(1.02);
}

.file-upload__icon {
  font-size: 48px;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-12);
}

.file-upload--dragging .file-upload__icon {
  color: var(--color-brand);
}

.file-upload__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.file-upload__hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.file-upload__input {
  display: none;
}

.file-list {
  margin-top: var(--space-16);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.file-item {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  padding: var(--space-12);
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-surface-elevated);
}

.file-item:last-child {
  border-bottom: none;
}

.file-preview {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.file-preview--icon {
  color: var(--color-text-tertiary);
  font-size: 24px;
}

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

.file-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: var(--space-2);
}

.file-size {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.file-progress {
  margin-top: var(--space-4);
}

.file-progress__bar {
  width: 100%;
  height: 4px;
  background: var(--color-border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.file-progress__fill {
  height: 100%;
  background: var(--color-brand);
  transition: width 0.3s ease;
  border-radius: var(--radius-sm);
}

.file-actions {
  display: flex;
  gap: var(--space-4);
}

.file-remove {
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  transition: all var(--transition-duration);
}

.file-remove:hover {
  color: var(--color-error);
  background: var(--color-error-subtle);
}

/* Form Layout Utilities */
.form-grid {
  display: grid;
  gap: var(--space-16);
}

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

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

.form-grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.form-section {
  padding: var(--space-20);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-elevated);
}

.form-section__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.form-section__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-16);
}

/* Advanced Input Styles */
.input-group {
  position: relative;
  display: flex;
}

.input-group__addon {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.input-group__addon--prepend {
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-group__addon--append {
  border-left: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-group .form-input {
  border-radius: 0;
}

.input-group--prepend .form-input {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-group--append .form-input {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-base);
  pointer-events: none;
}

.input-icon--left {
  left: var(--space-12);
}

.input-icon--right {
  right: var(--space-12);
}

.form-input--with-icon-left {
  padding-left: var(--space-8);
}

.form-input--with-icon-right {
  padding-right: var(--space-8);
}

/* Checkbox and Radio Styles */
.form-checkbox,
.form-radio {
  display: flex;
  align-items: flex-start;
  gap: var(--space-8);
  cursor: pointer;
  margin-bottom: var(--space-8);
}

.form-checkbox__input,
.form-radio__input {
  margin: 0;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
}

.form-checkbox__label,
.form-radio__label {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

/* Textarea */
.form-textarea {
  resize: vertical;
  min-height: 100px;
  font-family: var(--font-family-sans);
}

/* Select */
.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-8) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-8);
  appearance: none;
}

/* Form States */
.form-field--loading .form-input {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24'%3e%3ccircle cx='12' cy='12' r='10' stroke='currentColor' stroke-width='4' opacity='0.25'/%3e%3cpath fill='currentColor' d='M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z'/%3e%3c/svg%3e");
  background-position: right var(--space-8) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-8);
}

.form-field--disabled .form-input {
  background: var(--color-surface);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
}

/* ==========================================================================
   LAYOUT COMPONENTS
   ========================================================================== */

/* App Shell */
.app-shell {
  display: flex;
  min-height: 100vh;
  background: var(--color-background);
}

.app-shell__sidebar {
  background: var(--color-surface);  /* Light gray sidebar: #f8fafc */
  transition: all var(--transition-duration);
  position: relative;
  z-index: var(--z-index-sidebar);
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  max-width: var(--sidebar-width);
}

/* ============================================================
   NAV LINK STYLES
   Used in app-shell sidebar navigation
   ============================================================ */
.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-duration);
  margin-bottom: var(--space-1);
}

.nav-link:hover {
  background: var(--color-surface-elevated);  /* White on hover */
  color: var(--color-text-primary);
}

.nav-link--active {
  background: var(--color-surface-elevated);  /* White background */
  color: var(--color-brand);
  border-left: 3px solid var(--color-brand);
  padding-left: calc(var(--space-4) - 3px);  /* Compensate for border */
}

.nav-link--active:hover {
  background: var(--color-surface-elevated);
  color: var(--color-brand);
}

.nav-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-4) 0;
}

.app-shell__sidebar--collapsed {
  width: 60px;
  min-width: 60px;
  max-width: 60px;
}

.app-shell__sidebar--mobile {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  transform: translateX(-100%);
  z-index: var(--z-index-overlay);
}

.app-shell__sidebar--open.app-shell__sidebar--mobile {
  transform: translateX(0);
}

.app-shell__main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: margin-left var(--transition-duration);
}

.app-shell__header {
  background: var(--color-surface-elevated);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-12) var(--space-16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  z-index: var(--z-index-header);
}

.app-shell__content {
  flex: 1;
  padding: var(--space-20);
  overflow: auto;
}

.app-shell__footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) var(--space-16);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.app-shell__overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-index-overlay-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-duration);
}

.app-shell__overlay--visible {
  opacity: 1;
  visibility: visible;
}

/* Split Panes */
.split-panes {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
}

.split-panes--vertical {
  flex-direction: column;
}

.split-panes__pane {
  position: relative;
  overflow: hidden;
}

.split-panes__resizer {
  position: relative;
  background: var(--color-border);
  cursor: col-resize;
  user-select: none;
  transition: background-color var(--transition-duration);
}

.split-panes__resizer:hover {
  background: var(--color-brand);
}

.split-panes__resizer--horizontal {
  width: 4px;
  cursor: col-resize;
}

.split-panes__resizer--vertical {
  height: 4px;
  cursor: row-resize;
}

.split-panes__resizer--disabled {
  cursor: default;
  background: var(--color-border-subtle);
}

.split-panes__resizer--disabled:hover {
  background: var(--color-border-subtle);
}

.split-panes__resizer--resizing {
  background: var(--color-brand);
}

.split-panes__resizer::before {
  content: '';
  position: absolute;
  background: transparent;
  z-index: 1;
}

.split-panes__resizer--horizontal::before {
  top: 0;
  bottom: 0;
  left: -2px;
  right: -2px;
}

.split-panes__resizer--vertical::before {
  left: 0;
  right: 0;
  top: -2px;
  bottom: -2px;
}

/* Accordion */
.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.accordion__panel {
  border-bottom: 1px solid var(--color-border);
}

.accordion__panel:last-child {
  border-bottom: none;
}

.accordion__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  background: var(--color-surface-elevated);
  cursor: pointer;
  transition: all var(--transition-duration);
  border: none;
  width: 100%;
  text-align: left;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.accordion__header:hover {
  background: var(--color-surface-hover);
}

.accordion__header:focus {
  outline: none;
  background: var(--color-surface-hover);
}

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

.accordion__header--disabled:hover {
  background: var(--color-surface-elevated);
}

.accordion__title {
  flex: 1;
  margin: 0;
}

.accordion__icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-duration);
  color: var(--color-text-secondary);
}

.accordion__header--open .accordion__icon {
  transform: rotate(180deg);
}

.accordion__content {
  padding: var(--space-4);
  background: var(--color-surface);
  overflow: hidden;
  transition: all var(--transition-duration);
}

.accordion__content--collapsed {
  padding-top: 0;
  padding-bottom: 0;
  max-height: 0;
}

/* Masonry Grid */
.masonry-grid {
  position: relative;
  width: 100%;
}

.masonry-item {
  position: absolute;
  transition: all var(--transition-duration);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
}

.masonry-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-hover);
}

.masonry-item__content {
  padding: var(--space-12);
}

.masonry-item__image {
  width: 100%;
  height: auto;
  display: block;
}

.masonry-item__title {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.masonry-item__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

/* Sticky Element */
.sticky-element {
  transition: all var(--transition-duration);
}

.sticky-element--stuck {
  box-shadow: var(--shadow-md);
  background: var(--color-surface-elevated);
  border-bottom: 1px solid var(--color-border);
}

/* Infinite Scroll */
.infinite-scroll {
  position: relative;
}

.infinite-scroll__loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-20);
  color: var(--color-text-secondary);
}

.infinite-scroll__loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top: 2px solid var(--color-brand);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: var(--space-8);
}

.infinite-scroll__error {
  padding: var(--space-4);
  text-align: center;
  color: var(--color-error);
  background: var(--color-error-subtle);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  margin: var(--space-12);
}

.infinite-scroll__retry {
  margin-top: var(--space-8);
}

.infinite-scroll__end {
  padding: var(--space-4);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* Virtual Scroll */
.virtual-scroll {
  position: relative;
  overflow: auto;
  height: 100%;
}

.virtual-scroll__viewport {
  position: relative;
  overflow: hidden;
}

.virtual-scroll__spacer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  pointer-events: none;
}

.virtual-scroll__item {
  position: absolute;
  left: 0;
  right: 0;
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-surface-elevated);
  transition: background-color var(--transition-duration);
}

.virtual-scroll__item:hover {
  background: var(--color-surface-hover);
}

.virtual-scroll__item-content {
  padding: var(--space-12) var(--space-16);
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

/* Layout Utilities */
.layout-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-16);
}

.layout-grid {
  display: grid;
  gap: var(--space-16);
}

.layout-grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

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

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

.layout-flex {
  display: flex;
  gap: var(--space-16);
}

.layout-flex--column {
  flex-direction: column;
}

.layout-flex--wrap {
  flex-wrap: wrap;
}

.layout-flex--center {
  align-items: center;
  justify-content: center;
}

.layout-flex--between {
  justify-content: space-between;
}

.layout-flex--end {
  justify-content: flex-end;
}

.layout-section {
  padding: var(--space-20) 0;
}

.layout-section--large {
  padding: var(--space-32) 0;
}

.layout-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-16) 0;
}

.layout-divider--vertical {
  width: 1px;
  height: auto;
  margin: 0 var(--space-16);
}

/* Animations */

/* Loading Spinner Animation */
.animate-spin,
.icon-loading {
  animation: spin 1s linear infinite;
}

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

/* Pulse Animation for Skeleton Loaders */
.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

/* Fade In Up Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.3s ease-out;
}

/* Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
  .animate-spin,
  .icon-loading,
  .animate-pulse,
  .animate-fade-in-up {
    animation: none !important;
  }
}

/* ==========================================================================
   INTERACTIVE COMPONENTS
   ========================================================================== */

/* Advanced Dropdown */
.dropdown {
  position: relative;
  display: inline-block;
  width: 100%;
}

.dropdown__trigger {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-elevated);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-duration);
}

.dropdown__trigger:hover {
  border-color: var(--color-border-hover);
}

.dropdown__trigger:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

.dropdown__trigger--disabled {
  background: var(--color-surface);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
}

.dropdown__trigger--open {
  border-color: var(--color-brand);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.dropdown__display {
  flex: 1;
  text-align: left;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dropdown__display--placeholder {
  color: var(--color-text-tertiary);
}

.dropdown__icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-secondary);
  transition: transform var(--transition-duration);
}

.dropdown__trigger--open .dropdown__icon {
  transform: rotate(180deg);
}

.dropdown__clear {
  background: none;
  border: none;
  padding: var(--space-2);
  margin-right: var(--space-4);
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-duration);
}

.dropdown__clear:hover {
  color: var(--color-error);
  background: var(--color-error-subtle);
}

.dropdown__menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: var(--z-index-dropdown);
  background: var(--color-surface-elevated) !important;
  border: 1px solid var(--color-brand);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 200px;
  overflow-y: auto;
}

.dropdown__search {
  position: sticky;
  top: 0;
  background: var(--color-surface-elevated) !important;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-8);
}

.dropdown__search-input {
  width: 100%;
  padding: var(--space-6) var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

.dropdown__search-input:focus {
  outline: none;
  border-color: var(--color-brand);
}

.dropdown__option {
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  transition: all var(--transition-duration);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-surface-elevated);
}

.dropdown__option:last-child {
  border-bottom: none;
}

.dropdown__option:hover,
.dropdown__option--highlighted {
  background: var(--color-surface-hover);
}

.dropdown__option--selected {
  background: var(--color-brand-subtle);
  color: var(--color-brand-darker);
}

.dropdown__option--disabled {
  color: var(--color-text-tertiary);
  cursor: not-allowed;
}

.dropdown__option--disabled:hover {
  background: transparent;
}

.dropdown__option-text {
  flex: 1;
}

.dropdown__option-check {
  width: 16px;
  height: 16px;
  color: var(--color-brand);
}

.dropdown__selected-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.dropdown__selected-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-6);
  background: var(--color-brand-subtle);
  color: var(--color-brand-darker);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

.dropdown__selected-item-remove {
  background: none;
  border: none;
  color: var(--color-brand-darker);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-xs);
  transition: all var(--transition-duration);
}

.dropdown__selected-item-remove:hover {
  background: var(--color-brand);
  color: white;
}

/* Autocomplete */
.autocomplete {
  position: relative;
  width: 100%;
}

.autocomplete__input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-elevated);
  transition: all var(--transition-duration);
}

.autocomplete__input:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

.autocomplete__input--loading {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24'%3e%3ccircle cx='12' cy='12' r='10' stroke='currentColor' stroke-width='4' opacity='0.25'/%3e%3cpath fill='currentColor' d='M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z'/%3e%3c/svg%3e");
  background-position: right var(--space-8) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-8);
}

.autocomplete__results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: var(--z-index-dropdown);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 200px;
  overflow-y: auto;
}

.autocomplete__result {
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  transition: all var(--transition-duration);
  border-bottom: 1px solid var(--color-border-subtle);
}

.autocomplete__result:last-child {
  border-bottom: none;
}

.autocomplete__result:hover,
.autocomplete__result--highlighted {
  background: var(--color-surface-hover);
}

.autocomplete__result mark {
  background: var(--color-warning-subtle);
  color: var(--color-warning-darker);
  padding: 0;
  font-weight: var(--font-weight-medium);
}

.autocomplete__no-results {
  padding: var(--space-12);
  text-align: center;
  color: var(--color-text-secondary);
  font-style: italic;
}

.autocomplete__clear {
  position: absolute;
  top: 50%;
  right: var(--space-8);
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-duration);
}

.autocomplete__clear:hover {
  color: var(--color-error);
  background: var(--color-error-subtle);
}

/* Date Picker */
.datepicker {
  position: relative;
  width: 100%;
}

.datepicker__input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-elevated);
  cursor: pointer;
  transition: all var(--transition-duration);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.datepicker__input:hover {
  border-color: var(--color-border-hover);
}

.datepicker__input:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

.datepicker__display {
  flex: 1;
  text-align: left;
  color: var(--color-text-primary);
}

.datepicker__display--placeholder {
  color: var(--color-text-tertiary);
}

.datepicker__icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-secondary);
}

.datepicker__calendar {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: var(--z-index-dropdown);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4);
  min-width: 280px;
}

.datepicker__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-12);
}

.datepicker__nav {
  background: none;
  border: none;
  padding: var(--space-4);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-duration);
  color: var(--color-text-secondary);
}

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

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

.datepicker__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-2);
}

.datepicker__day-header {
  padding: var(--space-4);
  text-align: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.datepicker__day {
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  transition: all var(--transition-duration);
  display: flex;
  align-items: center;
  justify-content: center;
}

.datepicker__day:hover {
  background: var(--color-surface-hover);
}

.datepicker__day--today {
  background: var(--color-brand-subtle);
  color: var(--color-brand-darker);
  font-weight: var(--font-weight-medium);
}

.datepicker__day--selected {
  background: var(--color-brand);
  color: white;
}

.datepicker__day--in-range {
  background: var(--color-brand-subtle);
  color: var(--color-brand-darker);
}

.datepicker__day--disabled {
  color: var(--color-text-tertiary);
  cursor: not-allowed;
}

.datepicker__day--disabled:hover {
  background: transparent;
}

.datepicker__day--other-month {
  color: var(--color-text-tertiary);
}

.datepicker__actions {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-12);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border);
}

/* Tour/Onboarding */
.tour-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: var(--z-index-modal);
  pointer-events: none;
}

.tour-highlight {
  position: relative;
  z-index: calc(var(--z-index-modal) + 1);
  box-shadow: 0 0 0 4px var(--color-brand), 0 0 0 8px rgba(var(--color-brand-rgb), 0.3);
  border-radius: var(--radius-md);
}

.tour-tooltip {
  position: fixed;
  z-index: calc(var(--z-index-modal) + 2);
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-20);
  max-width: 320px;
  min-width: 280px;
}

.tour-tooltip::before {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border: 8px solid transparent;
}

.tour-tooltip--bottom::before {
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  border-bottom-color: var(--color-surface-elevated);
}

.tour-tooltip--top::before {
  bottom: -16px;
  left: 50%;
  transform: translateX(-50%);
  border-top-color: var(--color-surface-elevated);
}

.tour-tooltip--left::before {
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  border-left-color: var(--color-surface-elevated);
}

.tour-tooltip--right::before {
  left: -16px;
  top: 50%;
  transform: translateY(-50%);
  border-right-color: var(--color-surface-elevated);
}

.tour-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-12);
}

.tour-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.tour-close {
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-duration);
}

.tour-close:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-hover);
}

.tour-content {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-16);
}

.tour-progress {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.tour-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.tour-progress-fill {
  height: 100%;
  background: var(--color-brand);
  transition: width 0.3s ease;
  border-radius: var(--radius-sm);
}

.tour-progress-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.tour-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tour-nav {
  display: flex;
  gap: var(--space-8);
}

.tour-skip {
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  transition: all var(--transition-duration);
  text-decoration: underline;
}

.tour-skip:hover {
  color: var(--color-text-primary);
  text-decoration: none;
}

/* Drag & Drop Lists */
.drag-list {
  position: relative;
}

.drag-item {
  padding: var(--space-12);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-8);
  cursor: move;
  transition: all var(--transition-duration);
  user-select: none;
}

.drag-item:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

.drag-item.dragging {
  opacity: 0.5;
  transform: rotate(2deg);
  z-index: var(--z-index-dropdown);
}

.drag-item.drop-zone-active {
  border-color: var(--color-brand);
  background: var(--color-brand-subtle);
  transform: translateY(-2px);
}

.drag-handle {
  cursor: grab;
  color: var(--color-text-tertiary);
  margin-right: var(--space-8);
  transition: color var(--transition-duration);
}

.drag-handle:active {
  cursor: grabbing;
}

.drag-item:hover .drag-handle {
  color: var(--color-text-primary);
}

.drag-placeholder {
  height: 2px;
  background: var(--color-brand);
  border-radius: var(--radius-sm);
  margin: var(--space-4) 0;
  opacity: 0;
  transition: opacity var(--transition-duration);
}

.drag-placeholder.active {
  opacity: 1;
}

.kanban-board {
  display: flex;
  gap: var(--space-16);
  overflow-x: auto;
  padding-bottom: var(--space-8);
}

.kanban-column {
  min-width: 280px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
}

.kanban-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.kanban-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.kanban-count {
  background: var(--color-surface-elevated);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.kanban-items {
  min-height: 200px;
}

.kanban-item {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-12);
  margin-bottom: var(--space-8);
  cursor: move;
  transition: all var(--transition-duration);
}

.kanban-item:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

.kanban-item.dragging {
  opacity: 0.5;
  transform: rotate(1deg);
}

/* Component Navigation Styles */
.component-nav {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.component-nav__menu {
  display: flex;
  gap: var(--space-4);
  padding: 0 var(--space-16);
  overflow-x: auto;
}

.component-nav__item {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-16);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-duration);
  white-space: nowrap;
}

.component-nav__item:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-hover);
}

.component-nav__item--active {
  color: var(--color-brand);
  border-bottom-color: var(--color-brand);
}

.component-nav__icon {
  width: 20px;
  height: 20px;
}

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

@media (max-width: 1024px) {
  .sidebar-nav__toggle {
    display: block;
  }
  
  .sidebar-nav {
    transform: translateX(-100%);
  }
  
  .top-nav__menu {
    display: none;
  }
}

@media (max-width: 640px) {
  .modal {
    width: 95vw;
    margin: var(--space-8);
  }
  
  .toast {
    max-width: calc(100vw - 2rem);
  }
  
  .card-list--masonry {
    columns: 1;
  }
  
  .pagination {
    flex-wrap: wrap;
    gap: var(--space-2);
  }
  
  .tabs__list {
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .tabs__list::-webkit-scrollbar {
    display: none;
  }
}

/* Calendar Component Styles for Demo */
.calendar {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1rem;
  min-width: 280px;
  margin-top: 4px;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.calendar-day-header {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 0.5rem;
}

.calendar-date {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.calendar-date:hover:not(:disabled) {
  background: var(--color-hover);
}

.calendar-date.selected {
  background: var(--color-brand);
  color: white;
}

.calendar-date.today {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  font-weight: 600;
}

.calendar-date:disabled {
  color: var(--color-text-disabled);
  cursor: not-allowed;
}

.date-picker {
  position: relative;
}


/* ============================================================================
   LOGIN PAGE STYLES
   ============================================================================
   Standard login page layout and form styling.
   Used by templates/login.html and loginForm component.
   
   GREP: "login-page" or "login-form"
   ============================================================================ */

/**
 * LOGIN PAGE LAYOUT
 * Full-screen centered layout with optional background
 */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.login-container {
  width: 100%;
  max-width: 420px;
  background: var(--color-background);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
}

/**
 * LOGIN HEADER
 * Logo and welcome text
 */
.login-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.login-logo__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-logo__icon .icon {
  width: 28px;
  height: 28px;
}

.login-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
}

.login-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/**
 * LOGIN FORM
 * Form styling with enhanced inputs
 */
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.login-form .form-group {
  margin-bottom: 0;
}

/**
 * FORM INPUT WRAPPER
 * Container for input with icon and/or action button
 */
.form-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input-icon {
  position: absolute;
  left: var(--space-3);
  width: 18px;
  height: 18px;
  color: var(--color-text-tertiary);
  pointer-events: none;
  z-index: 1;
}

.form-input--with-icon {
  padding-left: calc(var(--space-3) + 18px + var(--space-2));
}

.form-input--with-action {
  padding-right: calc(var(--space-3) + 24px + var(--space-2));
}

.form-input-action {
  position: absolute;
  right: var(--space-2);
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  color: var(--color-text-tertiary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-duration), background var(--transition-duration);
}

.form-input-action:hover {
  color: var(--color-text-primary);
  background: var(--color-hover);
}

.form-input-action:focus {
  outline: none;
  color: var(--color-brand);
}

/**
 * CHECKBOX LABEL
 * Styled checkbox with label text
 */
.form-checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
}

.form-checkbox-label:hover {
  color: var(--color-text-primary);
}

/**
 * BLOCK BUTTON
 * Full-width button variant
 */
.btn-block {
  width: 100%;
  justify-content: center;
}

/**
 * LOGIN FOOTER
 * Links and secondary actions
 */
.login-footer {
  margin-top: var(--space-6);
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.login-footer p {
  margin: 0;
}

.login-footer a {
  font-weight: var(--font-medium);
  text-decoration: none;
}

.login-footer a:hover {
  text-decoration: underline;
}

/**
 * RESPONSIVE ADJUSTMENTS
 */
@media (max-width: 480px) {
  .login-container {
    padding: var(--space-6);
    border-radius: var(--radius-lg);
  }
  
  .login-logo__icon {
    width: 48px;
    height: 48px;
  }
  
  .login-logo__icon .icon {
    width: 24px;
    height: 24px;
  }
  
  .login-title {
    font-size: var(--text-xl);
  }
}

/**
 * POWERED BY BADGE
 * Shown on central login page
 */
.login-powered-by {
  position: fixed;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.6;
  transition: opacity var(--transition-duration);
}

.login-powered-by:hover {
  opacity: 1;
}