/* Force isolation from theme CSS conflicts */
.ohft-page-layout {
  position: relative;
  z-index: 1;
  display: block !important;
  clear: both;
  transform: none;
}

/* Simple two-column grid system - completely isolated */
.ohft-grid {
  display: flex !important;
  gap: 100px;
  /* CRITICAL: Align items to stretch so sidebar matches main content height */
  align-items: stretch;
  width: 100%;
  position: static !important;
  clear: both;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

@media (max-width: 768px) {
  .ohft-grid {
    flex-direction: column !important;
    gap: 24px;
    /* Reset alignment on mobile */
    align-items: flex-start;
  }
}

.ohft-grid__main {
  flex: 2;
  min-width: 0;
  position: static !important;
  float: none !important;
  clear: none !important;
  display: block !important;
}

.ohft-grid__sidebar {
  flex: 1;
  min-width: 0;
  position: static !important;
  float: none !important;
  clear: none !important;
  display: block !important;
}

@media (max-width: 768px) {
  .ohft-grid__main,
  .ohft-grid__sidebar {
    flex: 1;
  }
}

/* OHFT Custom Sidebar Utilities Component */
/* Replaces NHS tabs with semantic, purpose-built navigation */

.ohft-sidebar-utilities {
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 20px;
}

/* Utility Navigation Header */
.ohft-utility-nav {
  background-color: var(--color-surface-card);
}

.ohft-utility-nav__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  padding: 12px 16px 8px;
  border-bottom: 1px solid var(--color-border-primary);
  margin-bottom: 4px;
}

.ohft-utility-nav__list {
  display: flex;
  list-style: none;
  margin: 0 5px;
  padding: 0;
}

.ohft-utility-nav__item {
  flex: 1;
  margin: 0;
}

/* Navigation Buttons */
.ohft-utility-nav__button {
  width: 100%;
  background: transparent;
  border: none !important;
  border-bottom: 3px solid transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 4px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  transition: all 0.2s ease;
  min-height: 44px;
  position: relative;
  outline: transparent;
}

/* Material Design Icons */
.ohft-utility-nav__button::before {
  font-family: 'Material Symbols Outlined';
  font-size: 16px;
  font-weight: normal;
  font-style: normal;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  padding-right: 5px;
}

/* Icon assignments */
.ohft-utility-nav__button[data-panel="contents"]::before {
  content: 'list';
}

.ohft-utility-nav__button[data-panel="pages"]::before {
  content: 'folder';
}

.ohft-utility-nav__button[data-panel="tools"]::before {
  content: 'build';
}

/* Button States */
.ohft-utility-nav__button:hover {
  background-color: #e8edee;
  color: var(--nhs-blue);
  border-bottom-color: var(--nhs-blue);
  outline: none !important;
}

.ohft-utility-nav__button:focus {
  outline: none !important;
  border: none !important;
  outline-offset: -3px !important;
  background-color: var(--color-focus-background);
  color: var(--color-focus-text);
  border-bottom-color: var(--color-focus-border);
  z-index: 1;
}

.ohft-utility-nav__button--active {
  background-color: var(--color-surface-panel) !important;
  color: var(--nhs-blue);
  outline: transparent !important;
  border-bottom-color: var(--nhs-blue);
  font-weight: 700;
}

.ohft-utility-nav__button--active:hover {
  background-color: var(--color-surface-muted);
}

/* Panel Container */
.ohft-utility-panels {
  position: relative;
  min-height: 200px;
}

/* Individual Panels */
.ohft-utility-panel {
  padding: 16px;
  display: none;
}

.ohft-utility-panel--active {
  display: block;
}

/* Contents Panel Specific Styles */
.ohft-contents-panel {
  /* Inherits base panel styles */
}

.ohft-reading-progress {
  margin: 1rem 0;
  padding: 16px;
  border-radius: 0 4px 4px 0;
}

.ohft-progress-bar {
  width: 100%;
  height: 4px;
  background-color: var(--color-border-primary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.ohft-progress-fill {
  height: 100%;
  background-color: var(--nhs-blue);
  border-radius: 4px;
  transition: width 0.3s ease;
  width: 0%;
}

.ohft-progress-text {
  font-size: 14px;
  color: var(--color-text-primary);
  margin: 0;
  text-align: center;
}

/* Table of Contents List */
.ohft-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ohft-toc-item {
  margin-bottom: 8px;
}

.ohft-toc-link {
  display: block;
  padding: 8px 12px;
  color: var(--color-text-link);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
  font-size: 16px;
  line-height: 1.4;
  border-radius: 0 4px 4px 0;
}

.ohft-toc-link:hover {
  background-color: var(--color-surface-panel);
  border-left-color: var(--nhs-blue);
  text-decoration: underline;
}

.ohft-toc-link:focus {
  outline: 3px solid var(--color-focus-background);
  outline-offset: 0;
  background-color: var(--color-focus-background);
  color: var(--color-focus-text);
  text-decoration: none;
}

.ohft-toc-link--active {
  background-color: var(--nhs-blue);
  color: var(--nhs-white);
  border-left-color: var(--nhs-dark-blue);
  font-weight: 600;
}

.ohft-toc-link--active:hover {
  background-color: var(--nhs-dark-blue);
  text-decoration: none;
}

/* Pages Panel Specific Styles */
.ohft-pages-panel {
  /* Inherits base panel styles */
}

/* Override submenu positioning when inside pages panel */
.ohft-pages-panel #submenu {
  float: none !important;
  margin: 0 !important;
  width: 100% !important;
  padding: 0 !important;
}

.ohft-pages-panel #submenu ul {
  margin: 0;
  padding: 0;
}

.ohft-pages-panel #submenu ul li {
  margin-bottom: 16px;
}

.ohft-pages-panel #submenu .current_page_item {
  margin: 10px 0 10px 0 !important;
}

/* Tools Panel Specific Styles */
.ohft-tools-panel {
  /* Inherits base panel styles */
}

.ohft-tools-section {
  margin-bottom: 24px;
  padding: 16px;
  background-color: var(--color-surface-panel);
  border-left: 4px solid var(--nhs-blue);
  border-radius: 0 4px 4px 0;
}

.ohft-tools-section:last-child {
  margin-bottom: 0;
}

.ohft-tools-section__title {
  margin: 0 0 12px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.ohft-tools-section__description {
  margin: 0 0 16px 0;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.ohft-tools-placeholder {
  padding: 32px 16px;
  text-align: center;
  color: #768692;
  font-style: italic;
  background-color: var(--color-surface-muted);
  border: 2px dashed var(--color-border-primary);
  border-radius: 4px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .ohft-utility-nav__button {
    font-size: 11px;
    padding: 6px 2px;
    min-height: 40px;
    gap: 4px;
  }
  
  .ohft-utility-nav__button::before {
    font-size: 14px;
  }
  
  .ohft-utility-panel {
    padding: 12px;
  }
  
  .ohft-reading-progress {
    padding: 12px;
    margin-bottom: 16px;
  }
  
  .ohft-tools-section {
    padding: 12px;
    margin-bottom: 16px;
  }
}

/* Sticky positioning integration */
@media (min-width: 769px) {
  .ohft-sidebar-utilities {
    position: -webkit-sticky !important;
    position: sticky !important;
    top: 20px;
    max-height: calc(100vh - 40px);
  }
  
  .ohft-utility-panels {
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .ohft-utility-nav__button--active {
    border-bottom-width: 4px;
  }
  
  .ohft-toc-link--active {
    border-left-width: 5px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .ohft-utility-nav__button,
  .ohft-toc-link,
  .ohft-progress-fill {
    transition: none;
  }
}

@media (max-width: 768px) {
  /* Hide sidebar on mobile */
  .ohft-sidebar-utilities {
    display: none !important;
  }
}

/* Reading Tools Specific Styles */

.ohft-tools-panel {
  /* Remove previous placeholder styles when tools are added */
}

/* Tool Groups */
.ohft-tool-group {
  margin-bottom: 20px;
  padding: 16px;
  background-color: var(--color-surface-muted);
  border: 1px solid #e2e8f0;
  border-radius: 4px;
}

.ohft-tool-group:last-child {
  margin-bottom: 0;
}

.ohft-tool-group__title {
  margin: 0 0 12px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.ohft-tool-group__title::before {
  font-family: 'Material Symbols Outlined';
  font-size: 16px;
  color: var(--nhs-blue);
}

/* Tool Group Icons */
.ohft-tool-group--print .ohft-tool-group__title::before {
  content: 'print';
}

.ohft-tool-group--typography .ohft-tool-group__title::before {
  content: 'text_fields';
}

.ohft-tool-group--display .ohft-tool-group__title::before {
  content: 'palette';
}

.ohft-tool-group--language .ohft-tool-group__title::before {
  content: 'translate';
}

.ohft-tool-group--reset .ohft-tool-group__title::before {
  content: 'refresh';
}

/* Individual Tool Controls */
.ohft-tool-control {
  margin-bottom: 12px;
}

.ohft-tool-control:last-child {
  margin-bottom: 0;
}

.ohft-tool-control__label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

/* Buttons */
.ohft-tool-button {
  background: var(--nhs-blue);
  border: 2px solid var(--nhs-blue);
  border-radius: 4px;
  color: var(--nhs-white);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  padding: 8px 16px;
  text-decoration: none;
  transition: all 0.2s ease;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.ohft-tool-button::before {
  font-family: 'Material Symbols Outlined';
  font-size: 16px;
}

.ohft-tool-button--print::before {
  content: 'print';
}

.ohft-tool-button--translate::before {
  content: 'translate';
}

.ohft-tool-button--reset::before {
  content: 'refresh';
}

.ohft-tool-button:hover {
  background: var(--nhs-dark-blue);
  border-color: var(--nhs-dark-blue);
}

.ohft-tool-button:focus {
  outline: 3px solid var(--color-focus-background);
  outline-offset: 0;
  background: var(--color-focus-background);
  border-color: var(--color-focus-background);
  color: var(--color-focus-text);
}

.ohft-tool-button:active {
  background: #002f5c;
  border-color: #002f5c;
  color: var(--nhs-white);
  transform: translateY(1px);
}

/* Secondary button variant for reset */
.ohft-tool-button--secondary {
  background: var(--color-background-secondary);
  border-color: var(--color-border-primary);
  color: var(--nhs-blue);
}

.ohft-tool-button--secondary:hover {
  background: var(--color-surface-panel);
  border-color: var(--nhs-blue);
}

.ohft-tool-button--secondary:focus {
  background: var(--color-focus-background);
  border-color: var(--color-focus-background);
  color: var(--color-focus-text);
}

/* Select Controls */
.ohft-tool-select {
  width: 100%;
  padding: 8px 12px;
  border: 2px solid var(--color-border-primary);
  border-radius: 4px;
  font-family: inherit;
  font-size: 14px;
  background: var(--color-background-secondary);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.ohft-tool-select:hover {
  border-color: var(--nhs-blue);
}

.ohft-tool-select:focus {
  outline: 3px solid var(--color-focus-background);
  outline-offset: 0;
  border-color: var(--color-focus-background);
}

/* Range Slider */
.ohft-tool-range {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--color-border-primary);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.ohft-tool-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--nhs-blue);
  border: 2px solid var(--nhs-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: all 0.2s ease;
}

.ohft-tool-range::-webkit-slider-thumb:hover {
  background: var(--nhs-dark-blue);
  transform: scale(1.1);
}

.ohft-tool-range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--nhs-blue);
  border: 2px solid var(--nhs-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: all 0.2s ease;
}

.ohft-tool-range::-moz-range-thumb:hover {
  background: var(--nhs-dark-blue);
  transform: scale(1.1);
}

.ohft-tool-range:focus {
  outline: 3px solid var(--color-focus-background);
  outline-offset: 2px;
}

/* Range Value Display */
.ohft-range-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 6px;
  font-size: 12px;
  color: #768692;
}

.ohft-range-value {
  font-weight: 600;
  color: var(--nhs-blue);
}

/* Radio Button Groups */
.ohft-radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ohft-radio-option {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 6px;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.ohft-radio-option:hover {
  background-color: var(--color-surface-panel);
}

.ohft-radio-input {
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
}

.ohft-radio-label {
  font-size: 14px;
  color: var(--color-text-primary);
  cursor: pointer;
  margin: 0;
  flex: 1;
}

.ohft-radio-input:focus {
  outline: 3px solid var(--color-focus-background);
  outline-offset: 2px;
}

/* Applied Reading Settings Indicator */
.ohft-settings-indicator {
  position: fixed;
  top: 100px;
  right: 120px;
  background: var(--color-success);
  color: var(--nhs-white);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  z-index: 999999;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  pointer-events: none;
}

.ohft-settings-indicator--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Print Styles */
@media print {
  .ohft-sidebar-utilities,
  .ohft-settings-indicator,
  .nhsuk-header,
  .ohft-header,
  .nhsuk-footer,
  .ohft-footer {
    display: none !important;
  }
  
  body {
    background: var(--nhs-white) !important;
    color: var(--color-text-primary) !important;
    font-size: 12pt !important;
    line-height: 1.4 !important;
  }
  
  article {
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary) !important;
    page-break-after: avoid;
  }
  
  p, li {
    orphans: 3;
    widows: 3;
  }
  
  img {
    max-width: 100% !important;
    height: auto !important;
  }
  
  .ohft-grid {
    display: block !important;
  }
  
  .ohft-grid__main {
    width: 100% !important;
    float: none !important;
  }
}

/* Dark Mode Styles */
@media (prefers-color-scheme: dark) {
  /* Only apply if user hasn't manually set light mode */
  body:not([data-color-mode="light"]) {
    background: #1a1a1a !important;
    color: #e5e5e5 !important;
  }
}

/* Manual Dark Mode */
[data-color-mode="dark"] {
  background: #1a1a1a !important;
  color: #e5e5e5 !important;
}

[data-color-mode="dark"] .ohft-sidebar-utilities {
  background: #2d2d2d;
  border-color: #404040;
}

[data-color-mode="dark"] .ohft-utility-nav {
  background: #333333;
  border-color: #404040;
}

[data-color-mode="dark"] .ohft-utility-nav__button {
  color: #b0b0b0;
}

[data-color-mode="dark"] .ohft-utility-nav__button:hover {
  background: #404040;
  color: var(--nhs-white);
}

[data-color-mode="dark"] .ohft-utility-nav__button--active {
  background: #2d2d2d;
  color: var(--nhs-white);
  border-bottom-color: #66b3ff;
}

[data-color-mode="dark"] .ohft-tool-group {
  background: #333333;
  border-color: #404040;
}

[data-color-mode="dark"] .ohft-tool-group__title {
  color: #e5e5e5;
}

[data-color-mode="dark"] .ohft-tool-control__label {
  color: #b0b0b0;
}

[data-color-mode="dark"] .ohft-tool-select {
  background: #2d2d2d;
  border-color: #404040;
  color: #e5e5e5;
}

[data-color-mode="dark"] .ohft-reading-progress {
  background: #333333;
  border-left-color: #66b3ff;
}

[data-color-mode="dark"] .ohft-progress-fill {
  background: #66b3ff;
}

[data-color-mode="dark"] .ohft-toc-link {
  color: #66b3ff;
}

[data-color-mode="dark"] .ohft-toc-link:hover {
  background: #333333;
  border-left-color: #66b3ff;
}

[data-color-mode="dark"] .ohft-toc-link--active {
  background: #66b3ff;
  color: #1a1a1a;
}

/* Lexend Font Application */
[data-font-family="lexend"] {
  font-family: 'Lexend', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif !important;
}

/* Font Size Scaling */
[data-font-scale="0.8"] { font-size: 0.8em !important; }
[data-font-scale="0.9"] { font-size: 0.9em !important; }
[data-font-scale="1.0"] { font-size: 1em !important; }
[data-font-scale="1.1"] { font-size: 1.1em !important; }
[data-font-scale="1.2"] { font-size: 1.2em !important; }
[data-font-scale="1.3"] { font-size: 1.3em !important; }
[data-font-scale="1.4"] { font-size: 1.4em !important; }
[data-font-scale="1.5"] { font-size: 1.5em !important; }