/**
 * Advanced UI Components Styles
 * Modern, accessible styles for modal dialogs, navigation menus, charts, forms, and tooltips
 * Enhanced with CSS custom properties, accessibility, and responsive design
 */

/* ===== CSS CUSTOM PROPERTIES FOR ADVANCED UI COMPONENTS ===== */
:root {
  /* Component-specific colors (inherits base colors from main.css) */
  --modal-backdrop: rgba(0, 0, 0, 0.5);
  --modal-background: var(--color-white);
  --modal-border: var(--color-gray-200);
  --modal-shadow: var(--shadow-xl);

  --nav-background: var(--color-white);
  --nav-border: var(--color-gray-200);
  --nav-item-hover: var(--color-gray-50);
  --nav-item-selected: var(--color-primary);
  --nav-item-focus: var(--color-warning);

  --form-background: var(--color-white);
  --form-border: var(--color-gray-400);
  --form-border-focus: var(--color-primary);
  --form-border-error: var(--color-error);
  --form-disabled-bg: var(--color-gray-50);

  --tooltip-background: rgba(0, 0, 0, 0.9);
  --tooltip-text: var(--color-white);

  /* Component sizing (uses main.css border radius tokens) */
  --modal-border-radius: var(--radius-lg);
  --button-border-radius: var(--radius-base);
  --input-border-radius: var(--radius-base);

  /* Component-specific animations */
  --transition-modal: 0.3s ease-out;

  /* Component z-index scale */
  --z-modal-backdrop: 999;
  --z-modal: 1000;
  --z-tooltip: 1500;

  /* Touch targets and focus (accessibility) */
  --touch-target-min: 44px;
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;
}

/* ===== MODAL DIALOG STYLES ===== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--modal-backdrop);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  transition: opacity var(--transition-modal);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1rem;
  padding-top: 2rem;
  overflow-y: auto;
}

.modal-backdrop.visible {
  opacity: 1;
}

.modal-dialog {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--modal-background);
  border-radius: var(--modal-border-radius);
  box-shadow: var(--modal-shadow);
  z-index: var(--z-modal);
  min-width: 300px;
  max-width: 90vw;
  max-height: calc(100vh - 4rem); /* Updated for better usability */

  /* Flexbox layout for proper header/body/footer stacking */
  display: flex;
  flex-direction: column;

  /* Remove overflow: hidden that was clipping content */
  overflow: visible;

  animation: modalSlideIn var(--transition-modal);
  border: 1px solid var(--modal-border);
  contain: layout style;
}

.modal-dialog:focus {
  outline: none;
}

.modal-header {
  padding: var(--spacing-5, 20px);
  border-bottom: 1px solid var(--modal-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--modal-background);

  /* Flex item properties */
  flex-shrink: 0; /* Don't shrink the header */
  border-top-left-radius: var(--modal-border-radius);
  border-top-right-radius: var(--modal-border-radius);
}

.modal-title {
  margin: 0;
  font-size: var(--font-size-lg, 18px);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--color-gray-900, #333);
  line-height: var(--line-height-tight, 1.25);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl, 24px);
  cursor: pointer;
  color: var(--color-gray-600, #666);
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--button-border-radius);
  transition: all var(--transition-fast);
  position: relative;
}

.modal-close:hover,
.modal-close:focus {
  background-color: var(--nav-item-hover);
  color: var(--color-gray-800, #333);
}

.modal-close:focus-visible {
  outline: var(--focus-ring-width) solid var(--form-border-focus);
  outline-offset: var(--focus-ring-offset);
}

/* Modal body - updated for proper flexbox layout */
.modal-body {
  padding: var(--spacing-5, 20px);
  background: var(--modal-background);

  /* Flex item properties for proper layout */
  flex: 1; /* Take up available space */
  overflow-y: auto; /* Allow vertical scrolling when content overflows */
  overflow-x: hidden; /* Prevent horizontal scrolling */
  min-height: 0; /* Important for flex items with overflow */

  /* Add some maximum height constraints */
  max-height: calc(90vh - 140px); /* Account for header and footer space */
}

/* Legacy scoped styles - keep for backward compatibility but make less specific */
.modal-backdrop:not(.pre-launch-modal) .modal-body {
  /* Override with flexbox layout styles above */
  max-height: none; /* Remove the 60vh constraint */
}

.modal-footer {
  padding: var(--spacing-3, 12px) var(--spacing-4, 16px);
  border-top: 1px solid var(--modal-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-2, 8px);
  background: var(--modal-background);

  /* Flex item properties for proper stacking */
  flex-shrink: 0; /* Don't shrink the footer */

  /* Positioning */
  position: relative;
  z-index: 10;

  /* Responsive behavior */
  flex-wrap: wrap;

  /* Overflow handling - horizontal scroll for many buttons */
  overflow-x: auto;
  overflow-y: visible;

  /* Minimum usability */
  min-height: var(--touch-target-min, 44px);

  /* Smooth scrolling for overflow */
  scroll-behavior: smooth;
  scrollbar-width: thin;

  /* Border radius for bottom corners */
  border-bottom-left-radius: var(--modal-border-radius);
  border-bottom-right-radius: var(--modal-border-radius);
}

.scroll-indicator {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background: var(--modal-background);
  border: 1px solid var(--modal-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: bold;
  color: var(--text-color);
  cursor: pointer;
  transition: opacity var(--transition-fast);
  z-index: 20;
  pointer-events: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.scroll-indicator-left {
  left: 4px;
}

.scroll-indicator-right {
  right: 4px;
}

.scroll-indicator:hover {
  background: var(--color-background-hover, #f3f4f6);
}

/* Modal Footer States */
.modal-footer.has-overflow-x {
  padding-left: 30px;
  padding-right: 30px;
}

.modal-footer.needs-stacking {
  flex-direction: column;
  align-items: stretch;
}

.modal-footer.needs-stacking .modal-button {
  width: 100%;
  justify-content: center;
}

.modal-footer.mobile-layout {
  flex-direction: column;
  align-items: stretch;
  gap: var(--spacing-2, 8px);
}

.modal-footer.mobile-layout .modal-button {
  width: 100%;
  justify-content: center;
}

.modal-footer.small-mobile-layout {
  padding: var(--spacing-2, 8px);
}

/* Button spacing improvements */
.modal-footer > .modal-button:not(:last-child) {
  margin-right: 0; /* Use gap instead */
}

/* Many buttons layout optimization */
.modal-footer.many-buttons {
  justify-content: center;
  flex-wrap: wrap;
}

.modal-footer.many-buttons .modal-button {
  min-width: 60px;
  padding: var(--spacing-2, 8px) var(--spacing-3, 12px);
  font-size: var(--font-size-xs, 12px);
}

/* ===== NAVIGATION MENU STYLES ===== */
.navigation-menu {
  background: var(--nav-background);
  border: 1px solid var(--nav-border);
  border-radius: var(--button-border-radius);
  box-shadow: var(--shadow-md, 0 2px 8px rgba(0, 0, 0, 0.1));
  contain: layout style;
}

.navigation-menu.vertical {
  min-width: 200px;
}

.navigation-menu.horizontal {
  display: flex;
}

.navigation-menu.horizontal .nav-item {
  border-bottom: none;
  border-right: 1px solid var(--color-gray-100, #f0f0f0);
}

.navigation-menu.horizontal .nav-item:last-child {
  border-right: none;
}

.nav-item {
  padding: var(--spacing-3, 12px) var(--spacing-4, 16px);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--color-gray-100, #f0f0f0);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--touch-target-min);
  position: relative;
  color: var(--color-gray-700, #555);
  text-decoration: none;
  font-weight: var(--font-weight-medium, 500);
}

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

.nav-item:hover:not(.disabled) {
  background-color: var(--nav-item-hover);
  color: var(--color-gray-900, #333);
  transform: translateX(2px);
}

.nav-item.selected {
  background-color: var(--nav-item-selected);
  color: var(--color-white, white);
  font-weight: var(--font-weight-semibold, 600);
}

.nav-item.selected::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-white, white);
}

.nav-item:focus-visible {
  outline: var(--focus-ring-width) solid var(--nav-item-focus);
  outline-offset: -2px;
  z-index: 1;
}

.nav-item.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  color: var(--color-gray-400, #999);
}

.nav-item-icon {
  margin-right: var(--spacing-2, 10px);
  opacity: 0.7;
  font-size: var(--font-size-base, 16px);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-item.selected .nav-item-icon {
  opacity: 1;
}

.nav-item-badge {
  background: var(--color-error, #f44336);
  color: var(--color-white, white);
  border-radius: var(--radius-full, 50px);
  padding: 2px 6px;
  font-size: var(--font-size-xs, 10px);
  font-weight: var(--font-weight-bold, 700);
  min-width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}

.nav-item.selected .nav-item-badge {
  background: rgba(255, 255, 255, 0.2);
}

/* Keyboard Navigation Enhancement */
.navigation-menu:focus-within {
  box-shadow: 0 0 0 2px var(--nav-item-focus);
}

/* ARIA State Styling */
.nav-item[aria-current='page'],
.nav-item[aria-selected='true'] {
  background-color: var(--nav-item-selected);
  color: var(--color-white, white);
}

.nav-item[aria-disabled='true'] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== CHART STYLES ===== */
.chart-container {
  background: var(--modal-background);
  border: 1px solid var(--modal-border);
  border-radius: var(--modal-border-radius);
  padding: var(--spacing-5, 20px);
  box-shadow: var(--shadow-sm, 0 2px 4px rgba(0, 0, 0, 0.1));
  position: relative;
  contain: layout style;
}

.chart-container.loading {
  pointer-events: none;
}

.chart-container.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-gray-300, #ccc);
  border-top: 3px solid var(--nav-item-selected);
  border-radius: 50%;
  animation: componentSpin 1s linear infinite;
  z-index: 10;
}

.chart-title {
  font-size: var(--font-size-lg, 16px);
  font-weight: var(--font-weight-semibold, 600);
  margin-bottom: var(--spacing-5, 20px);
  text-align: center;
  color: var(--color-gray-900, #333);
  line-height: var(--line-height-tight, 1.25);
}

.chart-legend {
  display: flex;
  justify-content: center;
  gap: var(--spacing-5, 20px);
  margin-top: var(--spacing-4, 15px);
  font-size: var(--font-size-xs, 12px);
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-1, 5px);
  color: var(--color-gray-700, #555);
  font-weight: var(--font-weight-medium, 500);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-sm, 2px);
  border: 1px solid var(--modal-border);
  flex-shrink: 0;
}

.chart-no-data {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--color-gray-500, #999);
  font-style: italic;
}

.chart-no-data::before {
  content: '📊';
  font-size: var(--font-size-4xl, 48px);
  margin-bottom: var(--spacing-2, 8px);
}

/* ===== ENHANCED FORM FIELD STYLES ===== */
.form-field {
  margin-bottom: var(--spacing-5, 20px);
  position: relative;
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-1, 5px);
  font-size: var(--font-size-sm, 14px);
  font-weight: var(--font-weight-medium, 500);
  color: var(--color-gray-900, #333);
  line-height: var(--line-height-normal, 1.5);
}

.form-label.required::after {
  content: ' *';
  color: var(--form-border-error);
  font-weight: var(--font-weight-bold, 700);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-2, 10px) var(--spacing-3, 12px);
  border: 1px solid var(--form-border);
  border-radius: var(--input-border-radius);
  font-size: var(--font-size-sm, 14px);
  font-family: inherit;
  line-height: var(--line-height-normal, 1.5);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  background: var(--form-background);
  color: var(--color-gray-900, #333);
  min-height: var(--touch-target-min);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.form-input:focus-visible,
.form-select:focus-visible,
.form-textarea:focus-visible {
  outline: var(--focus-ring-width) solid var(--form-border-focus);
  outline-offset: var(--focus-ring-offset);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--form-border-error);
  box-shadow: 0 0 0 3px rgba(244, 67, 54, 0.1);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background-color: var(--form-disabled-bg);
  color: var(--color-gray-500, #999);
  cursor: not-allowed;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-500, #999);
  opacity: 1;
}

.form-error {
  margin-top: var(--spacing-1, 5px);
  font-size: var(--font-size-xs, 12px);
  color: var(--form-border-error);
  display: flex;
  align-items: center;
  gap: var(--spacing-1, 4px);
}

.form-error::before {
  content: '⚠';
  font-size: var(--font-size-sm, 14px);
}

.form-success {
  margin-top: var(--spacing-1, 5px);
  font-size: var(--font-size-xs, 12px);
  color: var(--color-success, #4caf50);
  display: flex;
  align-items: center;
  gap: var(--spacing-1, 4px);
}

.form-success::before {
  content: '✓';
  font-size: var(--font-size-sm, 14px);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
  font-family: inherit;
}

.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 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 8px center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: var(--spacing-8, 32px);
  appearance: none;
  cursor: pointer;
}

.form-select:disabled {
  cursor: not-allowed;
}

/* Form Field Groups */
.form-group {
  display: flex;
  gap: var(--spacing-3, 12px);
  align-items: flex-end;
}

.form-group .form-field {
  flex: 1;
  margin-bottom: 0;
}

/* Input with Icon */
.form-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input-icon {
  position: absolute;
  left: var(--spacing-3, 12px);
  color: var(--color-gray-500, #999);
  z-index: 1;
  pointer-events: none;
}

.form-input-wrapper .form-input {
  padding-left: var(--spacing-8, 40px);
}

.form-input-wrapper.icon-right .form-input-icon {
  left: auto;
  right: var(--spacing-3, 12px);
}

.form-input-wrapper.icon-right .form-input {
  padding-left: var(--spacing-3, 12px);
  padding-right: var(--spacing-8, 40px);
}

/* Loading State */
.form-input.loading,
.form-select.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='%23ccc' stroke-width='4'/%3e%3cpath fill='%232196f3' 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 8px center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: var(--spacing-8, 32px);
}

/* ===== TOOLTIP STYLES ===== */
.tooltip {
  position: absolute;
  background: var(--tooltip-background);
  color: var(--tooltip-text);
  padding: var(--spacing-2, 8px) var(--spacing-3, 12px);
  border-radius: var(--button-border-radius);
  font-size: var(--font-size-xs, 12px);
  white-space: nowrap;
  z-index: var(--z-tooltip);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  max-width: 250px;
  white-space: normal;
  line-height: var(--line-height-normal, 1.5);
  box-shadow: var(--shadow-md, 0 2px 8px rgba(0, 0, 0, 0.15));
  border: 1px solid var(--modal-border);
}

.tooltip.visible {
  opacity: 1;
}

.tooltip.large {
  max-width: 300px;
  padding: var(--spacing-3, 12px) var(--spacing-4, 16px);
  font-size: var(--font-size-sm, 14px);
}

.tooltip::before {
  content: '';
  position: absolute;
  border: 6px solid transparent;
}

.tooltip.top {
  margin-bottom: 6px;
}

.tooltip.top::before {
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-top-color: var(--tooltip-background);
}

.tooltip.bottom {
  margin-top: 6px;
}

.tooltip.bottom::before {
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-bottom-color: var(--tooltip-background);
}

.tooltip.left {
  margin-right: 6px;
}

.tooltip.left::before {
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border-left-color: var(--tooltip-background);
}

.tooltip.right {
  margin-left: 6px;
}

.tooltip.right::before {
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border-right-color: var(--tooltip-background);
}

/* Tooltip Variants */
.tooltip.error {
  background: var(--form-border-error);
  color: var(--color-white, white);
}

.tooltip.error::before {
  border-top-color: var(--form-border-error);
  border-bottom-color: var(--form-border-error);
  border-left-color: var(--form-border-error);
  border-right-color: var(--form-border-error);
}

.tooltip.success {
  background: var(--color-success, #4caf50);
  color: var(--color-white, white);
}

.tooltip.warning {
  background: var(--color-warning, #ff9800);
  color: var(--color-white, white);
}

/* ===== ADVANCED COMPONENT STATES ===== */

/* Loading States */
.component-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

.component-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-gray-300, #ccc);
  border-top: 2px solid var(--nav-item-selected);
  border-radius: 50%;
  animation: componentSpin 0.8s linear infinite;
  z-index: 10;
}

/* Error States */
.component-error {
  border-color: var(--form-border-error) !important;
  background-color: rgba(244, 67, 54, 0.05);
}

.component-error::before {
  content: '⚠';
  position: absolute;
  top: var(--spacing-1, 4px);
  right: var(--spacing-1, 4px);
  color: var(--form-border-error);
  font-weight: bold;
  z-index: 10;
}

/* Success States */
.component-success {
  border-color: var(--color-success, #4caf50) !important;
  background-color: rgba(76, 175, 80, 0.05);
}

.component-success::before {
  content: '✓';
  position: absolute;
  top: var(--spacing-1, 4px);
  right: var(--spacing-1, 4px);
  color: var(--color-success, #4caf50);
  font-weight: bold;
  z-index: 10;
}

/* ===== UTILITY CLASSES ===== */
.advanced-ui-hidden {
  display: none !important;
}

.advanced-ui-visible {
  display: block !important;
}

.advanced-ui-flex {
  display: flex !important;
}

.advanced-ui-inline-flex {
  display: inline-flex !important;
}

.advanced-ui-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.advanced-ui-disabled {
  opacity: 0.6;
  pointer-events: none;
  cursor: not-allowed;
}

.advanced-ui-clickable {
  cursor: pointer;
}

.advanced-ui-no-select {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

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

.advanced-ui-border {
  border: 1px solid var(--modal-border);
}

.advanced-ui-border-rounded {
  border-radius: var(--button-border-radius);
}

.advanced-ui-shadow {
  box-shadow: var(--shadow-md, 0 2px 8px rgba(0, 0, 0, 0.1));
}

.advanced-ui-transition {
  transition: all var(--transition-fast);
}

/* Spacing Utilities */
.advanced-ui-m-0 {
  margin: 0;
}
.advanced-ui-m-1 {
  margin: var(--spacing-1, 4px);
}
.advanced-ui-m-2 {
  margin: var(--spacing-2, 8px);
}
.advanced-ui-m-3 {
  margin: var(--spacing-3, 12px);
}
.advanced-ui-m-4 {
  margin: var(--spacing-4, 16px);
}

.advanced-ui-p-0 {
  padding: 0;
}
.advanced-ui-p-1 {
  padding: var(--spacing-1, 4px);
}
.advanced-ui-p-2 {
  padding: var(--spacing-2, 8px);
}
.advanced-ui-p-3 {
  padding: var(--spacing-3, 12px);
}
.advanced-ui-p-4 {
  padding: var(--spacing-4, 16px);
}

/* Text Utilities */
.advanced-ui-text-left {
  text-align: left;
}
.advanced-ui-text-center {
  text-align: center;
}
.advanced-ui-text-right {
  text-align: right;
}

.advanced-ui-font-bold {
  font-weight: var(--font-weight-bold, 700);
}
.advanced-ui-font-medium {
  font-weight: var(--font-weight-medium, 500);
}
.advanced-ui-font-normal {
  font-weight: var(--font-weight-normal, 400);
}

/* Color Utilities */
.advanced-ui-text-primary {
  color: var(--nav-item-selected);
}
.advanced-ui-text-error {
  color: var(--form-border-error);
}
.advanced-ui-text-success {
  color: var(--color-success, #4caf50);
}
.advanced-ui-text-muted {
  color: var(--color-gray-500, #999);
}

.advanced-ui-bg-primary {
  background-color: var(--nav-item-selected);
}
.advanced-ui-bg-error {
  background-color: var(--form-border-error);
}
.advanced-ui-bg-success {
  background-color: var(--color-success, #4caf50);
}
.advanced-ui-bg-muted {
  background-color: var(--color-gray-100, #f5f5f5);
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
.modal-dialog,
.navigation-menu,
.chart-container,
.tooltip {
  contain: layout style;
}

.modal-backdrop {
  contain: strict;
}

/* Reduce repaints during interactions */
.nav-item,
.modal-button,
.form-input,
.form-select,
.form-textarea {
  will-change: auto;
}

.nav-item:hover,
.modal-button:hover {
  will-change: background-color, transform;
}

/* Optimize font rendering */
.modal-title,
.chart-title,
.form-label {
  text-rendering: optimizeLegibility;
  font-feature-settings: 'kern' 1;
}

/* ===== ENHANCED ACCESSIBILITY FEATURES ===== */

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .modal-dialog {
    animation: none;
    opacity: 1;
    transform: translate(-50%, -50%);
  }

  .nav-item:hover {
    transform: none;
  }

  .modal-button:hover {
    transform: none;
  }
}

/* High Contrast Mode Enhancements */
@media (prefers-contrast: high) {
  :root {
    --modal-border: #000000;
    --nav-border: #000000;
    --form-border: #000000;
    --form-border-focus: #0066cc;
    --form-border-error: #cc0000;
    --nav-item-selected: #000000;
    --focus-ring-width: 3px;
  }

  .modal-dialog,
  .navigation-menu,
  .chart-container,
  .form-input,
  .form-select,
  .form-textarea {
    border-width: 2px;
    border-style: solid;
  }

  .nav-item.selected {
    background: #000000;
    color: #ffffff;
  }

  .modal-button.primary {
    background: #000000;
    color: #ffffff;
    border: 2px solid #000000;
  }

  .modal-button.secondary {
    background: #ffffff;
    color: #000000;
    border: 2px solid #000000;
  }
}

/* Focus Management and Keyboard Navigation */
.modal-dialog[tabindex='-1']:focus {
  outline: none;
}

.navigation-menu {
  /* Ensure proper focus flow */
  isolation: isolate;
}

/* Skip Links for Modal */
.modal-skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--nav-item-selected);
  color: var(--color-white, white);
  padding: var(--spacing-2, 8px) var(--spacing-3, 12px);
  border-radius: var(--button-border-radius);
  text-decoration: none;
  font-weight: var(--font-weight-medium, 500);
  z-index: calc(var(--z-modal) + 1);
  transition: top var(--transition-fast);
}

.modal-skip-link:focus {
  top: 6px;
}

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

/* Live Regions for Dynamic Content */
.live-region {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ARIA State Enhancements */
[aria-busy='true'] {
  cursor: wait;
  pointer-events: none;
}

[aria-invalid='true'] {
  border-color: var(--form-border-error) !important;
}

/* Focus Trap for Modals */
.modal-dialog .focus-trap-start,
.modal-dialog .focus-trap-end {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ===== TOUCH DEVICE OPTIMIZATIONS ===== */
@media (hover: none) and (pointer: coarse) {
  .nav-item,
  .modal-button,
  .modal-close {
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
  }

  .nav-item {
    padding: var(--spacing-4, 16px);
  }

  .modal-button {
    padding: var(--spacing-3, 12px) var(--spacing-5, 20px);
    font-size: var(--font-size-base, 16px);
  }

  .form-input,
  .form-select,
  .form-textarea {
    font-size: var(--font-size-base, 16px); /* Prevent zoom on iOS */
    min-height: var(--touch-target-min);
  }

  /* Hide hover effects on touch devices */
  .nav-item:hover {
    transform: none;
    background-color: var(--nav-item-hover);
  }

  .tooltip {
    display: none; /* Tooltips don't work well on touch */
  }
}

/* ===== RTL (RIGHT-TO-LEFT) LANGUAGE SUPPORT ===== */
[dir='rtl'] .nav-item-icon {
  margin-right: 0;
  margin-left: var(--spacing-2, 10px);
}

[dir='rtl'] .nav-item.selected::before {
  left: auto;
  right: 0;
}

[dir='rtl'] .nav-item:hover {
  transform: translateX(-2px);
}

[dir='rtl'] .form-input-icon {
  left: auto;
  right: var(--spacing-3, 12px);
}

[dir='rtl'] .form-input-wrapper .form-input {
  padding-left: var(--spacing-3, 12px);
  padding-right: var(--spacing-8, 40px);
}

[dir='rtl'] .form-input-wrapper.icon-right .form-input-icon {
  right: auto;
  left: var(--spacing-3, 12px);
}

[dir='rtl'] .form-input-wrapper.icon-right .form-input {
  padding-left: var(--spacing-8, 40px);
  padding-right: var(--spacing-3, 12px);
}

[dir='rtl'] .form-select {
  background-position: left 8px center;
  padding-right: var(--spacing-3, 12px);
  padding-left: var(--spacing-8, 32px);
}

[dir='rtl'] .modal-footer {
  justify-content: flex-start;
}

[dir='rtl'] .tooltip.left::before {
  left: auto;
  right: 100%;
  border-left-color: transparent;
  border-right-color: var(--tooltip-background);
}

[dir='rtl'] .tooltip.right::before {
  right: auto;
  left: 100%;
  border-right-color: transparent;
  border-left-color: var(--tooltip-background);
}

/* ===== PRINT STYLES ===== */
@media print {
  .modal-backdrop,
  .tooltip {
    display: none !important;
  }

  .modal-dialog {
    position: static !important;
    transform: none !important;
    box-shadow: none !important;
    border: 2px solid #000 !important;
    page-break-inside: avoid;
  }

  .navigation-menu {
    border: 1px solid #000 !important;
    box-shadow: none !important;
  }

  .nav-item.selected {
    background: #000 !important;
    color: #fff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .form-input,
  .form-select,
  .form-textarea {
    border: 1px solid #000 !important;
    background: #fff !important;
    color: #000 !important;
  }

  .chart-container {
    border: 1px solid #000 !important;
    box-shadow: none !important;
  }
}

/* Modal Footer Responsive & Overflow Styles */
.modal-footer::-webkit-scrollbar {
  height: 4px;
}

.modal-footer::-webkit-scrollbar-track {
  background: var(--color-background-secondary, #f8fafc);
}

.modal-footer::-webkit-scrollbar-thumb {
  background: var(--color-border-light, #e5e7eb);
  border-radius: 2px;
}

.modal-footer::-webkit-scrollbar-thumb:hover {
  background: var(--color-border, #d1d5db);
}

/* Overflow indicator shadows */
.modal-footer.has-overflow::before {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 20px;
  background: linear-gradient(to left, var(--modal-background), transparent);
  pointer-events: none;
  z-index: 1;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  .modal-backdrop {
    padding: 0.5rem;
    padding-top: 1rem;
  }

  .modal-backdrop .modal-dialog {
    max-height: calc(100vh - 2rem);
  }

  .modal-footer {
    padding: var(--spacing-2, 8px) var(--spacing-3, 12px);
    gap: var(--spacing-2, 8px);
    flex-direction: column;
    align-items: stretch;
  }

  .modal-footer .modal-button {
    width: 100%;
    justify-content: center;
    margin: 0;
  }

  .modal-footer .modal-button + .modal-button {
    margin-top: var(--spacing-2, 8px);
  }
}

/* Small mobile adjustments */
@media (max-width: 480px) {
  .modal-backdrop {
    padding: 0.25rem;
    padding-top: 0.5rem;
  }

  .modal-backdrop .modal-dialog,
  .modal-dialog {
    max-height: calc(100vh - 1rem);
  }

  .modal-footer {
    padding: var(--spacing-1, 4px) var(--spacing-2, 8px);
  }
}

/* Focus improvements */
.modal-footer .modal-button:focus-visible {
  outline: var(--focus-ring-width, 2px) solid var(--form-border-focus);
  outline-offset: var(--focus-ring-offset, 2px);
  z-index: 21;
}

/* Animation for layout changes */
.modal-footer {
  transition: all var(--transition-normal, 0.2s) ease-in-out;
}

.modal-footer .modal-button {
  transition: all var(--transition-fast, 0.15s) ease-in-out;
}

/* ===== MODAL LAYOUT SAFETY & EDGE CASES ===== */

/* Ensure modal backdrop uses flexbox for centering */
.modal-backdrop {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1rem;
  padding-top: 2rem;
  overflow-y: auto;
}

/* Reset modal-dialog positioning when inside flexbox backdrop */
.modal-backdrop .modal-dialog {
  position: relative;
  top: auto;
  left: auto;
  transform: none;
  margin: auto;
  max-height: calc(100vh - 4rem);
}

/* Handle very tall content */
.modal-dialog {
  max-height: 95vh; /* Increase from 90vh for better usability */
}

/* Ensure modal parts have proper border radius inheritance */
.modal-header:first-child {
  border-top-left-radius: var(--modal-border-radius);
  border-top-right-radius: var(--modal-border-radius);
}

.modal-footer:last-child {
  border-bottom-left-radius: var(--modal-border-radius);
  border-bottom-right-radius: var(--modal-border-radius);
}

/* Handle single-section modals (no header or footer) */
.modal-body:first-child {
  border-top-left-radius: var(--modal-border-radius);
  border-top-right-radius: var(--modal-border-radius);
}

.modal-body:last-child {
  border-bottom-left-radius: var(--modal-border-radius);
  border-bottom-right-radius: var(--modal-border-radius);
}

/* Prevent modal parts from creating their own stacking context issues */
.modal-header,
.modal-body,
.modal-footer {
  isolation: isolate;
}

/* Fix for modals with very little content */
.modal-dialog:has(.modal-body:empty),
.modal-dialog:has(.modal-body:not(:has(*))) {
  min-height: 200px;
  justify-content: center;
}

/* Ensure footer always appears at bottom even with little content */
.modal-dialog:has(.modal-footer) {
  min-height: 150px;
}