:root {
  --primary-color: #2c3e50;
  --accent-color: #3498db;
  --background-color: #f9f9f9;
  --border-color: #ddd;
  --action-color: #e74c3c;
  --action-hover-color: #c0392b;
  --highlight-color: #00ff00; /* Bright lime green for high contrast */
}

.nps-aid-accessibility * {
  box-sizing: border-box;
}

.nps-aid-accessibility .accessibility-toggle {
  position: fixed;
  top: 80%;
  right: 0;
  background: var(--primary-color);
  color: #fff;
  border-top: 1px solid #fff;
  border-bottom: 1px solid #fff;
  border-left: 1px solid #fff;
  border-right: none;
  padding: 8px;
  cursor: pointer;
  border-radius: 4px 0 0 4px;
  transform: translateY(-50%);
  z-index: 1000;
  font-size: 1rem;
  transition: background 0.2s, z-index 0.3s step-end;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  will-change: transform;
}

.nps-aid-accessibility .accessibility-toggle::after {
  content: ' (Alt+A)';
  font-size: 0.8rem;
  opacity: 0.8;
}

.nps-aid-accessibility .accessibility-toolbar.open ~ .accessibility-toggle {
  z-index: -1;
}

.nps-aid-accessibility .accessibility-toggle:hover {
  background: #34495e;
}

.nps-aid-accessibility .accessibility-toggle:focus {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.nps-aid-accessibility .accessibility-toolbar {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100%;
  background: var(--primary-color);
  padding: 20px;
  border-radius: 8px 0 0 8px;
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: right 0.3s ease;
  overflow-y: auto;
}

.nps-aid-accessibility .accessibility-toolbar.open {
  right: 0;
}

.nps-aid-accessibility .close-panel {
  position: absolute;
  top: 10px;
  right: 0px;
  background: transparent;
  color: #fff;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 1002;
  transition: color 0.2s;
  max-width: 15%;
}

.nps-aid-accessibility .close-panel:hover {
  color: #ccc;
}

.nps-aid-accessibility .close-panel:focus {
  outline: 1px solid #fff;
  outline-offset: 2px;
}

.nps-aid-accessibility .close-panel::after {
  content: ' (Alt+C)';
  font-size: 0.8rem;
  opacity: 0.8;
  display: block;
  text-align: center;
}

.nps-aid-accessibility .accessibility-toolbar .logo-link {
  display: block;
  width: 100%;
  max-width: 50%;
  margin: 0 auto 10px;
}

.nps-aid-accessibility .accessibility-toolbar .logo {
  width: 100%;
  height: auto;
}

.nps-aid-accessibility .accessibility-toolbar h1 {
  font-size: 1.2rem;
  color: #fff;
  text-align: center;
  margin-bottom: 10px;
  font-weight: bold;
}

.nps-aid-accessibility .accessibility-toolbar button {
  padding: 10px;
  background: var(--accent-color);
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s;
  position: relative;
}

.nps-aid-accessibility .accessibility-toolbar button::after {
  content: attr(data-shortcut);
  font-size: 0.8rem;
  opacity: 0.8;
  margin-left: 8px;
}

.nps-aid-accessibility .accessibility-toolbar button:hover {
  background: #2980b9;
}

.nps-aid-accessibility .accessibility-toolbar button:focus {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.nps-aid-accessibility .accessibility-toolbar .action-button {
  background: var(--action-color);
}

.nps-aid-accessibility .accessibility-toolbar .action-button:hover {
  background: var(--action-hover-color);
}

.nps-aid-accessibility .accessibility-toolbar .mobile-menu-button {
  display: none;
  background: var(--action-color);
}

.nps-aid-accessibility .accessibility-toolbar .mobile-menu-button:hover {
  background: var(--action-hover-color);
}

.nps-aid-accessibility .accessibility-toolbar .footer {
  margin-top: auto;
  font-size: 12px;
  color: #fff;
  text-align: center;
}

.nps-aid-accessibility .accessibility-toolbar .footer a {
  color: #fff;
  text-decoration: none;
}

.nps-aid-accessibility .accessibility-toolbar .footer a:hover {
  color: #ccc;
}

.nps-aid-accessibility .reading-line {
  position: fixed;
  height: 4px;
  background: var(--action-color);
  width: 100%;
  pointer-events: none;
  z-index: 999;
  display: none;
}

.nps-aid-accessibility .reading-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 998;
  display: none;
  pointer-events: none;
}

.nps-aid-accessibility .reading-mask .mask-window {
  position: absolute;
  height: 120px;
  width: 100%;
  background: transparent;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.8);
  pointer-events: none;
}

.nps-aid-accessibility .saturation-reset-button {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--action-color);
  color: #fff;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  border-radius: 4px;
  z-index: 1002;
  font-size: 1rem;
  display: none;
  transition: background 0.2s;
}

.nps-aid-accessibility .saturation-reset-button:hover {
  background: var(--action-hover-color);
}

.nps-aid-accessibility .saturation-reset-button:focus {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.nps-aid-accessibility .saturation-reset-button::after {
  content: ' (Alt+R)';
  font-size: 0.8rem;
  opacity: 0.8;
}

.nps-aid-accessibility .screen-reader-modal,
.nps-aid-accessibility .mobile-menu-modal {
  position: fixed;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -40%);
  background: var(--background-color);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  z-index: 1003;
  display: none;
  text-align: left;
  color: #333;
  max-width: clamp(300px, 80vw, 600px);
  max-height: 80vh;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  display: none;
}

.nps-aid-accessibility .screen-reader-modal button,
.nps-aid-accessibility .mobile-menu-modal button {
  background: var(--action-color);
  color: #fff;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  border-radius: 4px;
  font-size: 1rem;
  transition: background 0.2s;
  margin: 5px;
  width: 100%;
  text-align: center;
  position: relative;
}

.nps-aid-accessibility .screen-reader-modal button::after,
.nps-aid-accessibility .mobile-menu-modal button::after {
  content: attr(data-shortcut);
  font-size: 0.8rem;
  opacity: 0.8;
  margin-left: 8px;
}

.nps-aid-accessibility .screen-reader-modal button:hover,
.nps-aid-accessibility .mobile-menu-modal button:hover {
  background: var(--action-hover-color);
}

.nps-aid-accessibility .screen-reader-modal button:focus,
.nps-aid-accessibility .mobile-menu-modal button:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

.nps-aid-accessibility .page-structure-modal,
.nps-aid-accessibility .mobile-menu-modal {
  position: fixed;
  top: 10%;
  left: 30%;
  transform: translateX(-50%);
  background: var(--background-color);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  z-index: 1003;
  display: none;
  text-align: left;
  color: #333;
  max-width: clamp(300px, 80vw, 600px);
  max-height: 80vh;
  overflow-y: auto;
  border: 1px solid var(--border-color);
}

.nps-aid-accessibility .page-structure-modal .modal-header,
.nps-aid-accessibility .mobile-menu-modal .modal-header {
  position: sticky;
  top: 0;
  background: var(--background-color);
  z-index: 1004;
  padding-bottom: 10px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.nps-aid-accessibility .page-structure-modal .close-panel,
.nps-aid-accessibility .mobile-menu-modal .close-panel {
  background: transparent;
  color: #333;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  height: 20px;
  line-height: 16px;
  text-align: center;
  padding: 5px;
  transition: color 0.2s;
}

.nps-aid-accessibility .page-structure-modal .close-panel:hover,
.nps-aid-accessibility .mobile-menu-modal .close-panel:hover {
  color: #666;
}

.nps-aid-accessibility .page-structure-modal .close-panel:focus,
.nps-aid-accessibility .mobile-menu-modal .close-panel:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

.nps-aid-accessibility .page-structure-modal .close-panel::after,
.nps-aid-accessibility .mobile-menu-modal .close-panel::after {
  content: ' (Alt+C)';
  font-size: 0.8rem;
  opacity: 0.8;
  display: block;
  text-align: center;
}

.nps-aid-accessibility .page-structure-modal h2,
.nps-aid-accessibility .mobile-menu-modal h2 {
  font-size: 1.5rem;
  margin: 0 0 15px;
  font-weight: 600;
  color: #333;
}

.nps-aid-accessibility .page-structure-modal ul,
.nps-aid-accessibility .mobile-menu-modal ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nps-aid-accessibility .page-structure-modal li,
.nps-aid-accessibility .mobile-menu-modal li {
  margin: 8px 0;
  padding: 8px;
  border-radius: 4px;
  background: #fff;
  transition: background 0.2s;
}

.nps-aid-accessibility .page-structure-modal li:hover,
.nps-aid-accessibility .mobile-menu-modal li:hover {
  background: #f0f0f0;
}

.nps-aid-accessibility .page-structure-modal a,
.nps-aid-accessibility .mobile-menu-modal a {
  color: var(--accent-color);
  text-decoration: none;
  font-size: 1rem;
  display: block;
}

.nps-aid-accessibility .page-structure-modal a:hover,
.nps-aid-accessibility .mobile-menu-modal a:hover {
  text-decoration: underline;
}

.nps-aid-stop-flashes * {
  animation: none !important;
  transition: none !important;
}

.nps-aid-stop-flashes [style*="blink"],
.nps-aid-stop-flashes [style*="animation"],
.nps-aid-stop-flashes [style*="transition"] {
  visibility: hidden !important;
}

.nps-aid-contrast-high {
  background: #000 !important;
}

.nps-aid-contrast-high * {
  color: #fff !important;
}

.nps-aid-accessibility .nps-aid-contrast-high,
.nps-aid-accessibility .nps-aid-contrast-high * {
  background: var(--primary-color) !important;
  color: #fff !important;
}

.nps-aid-contrast-yellow {
  background: #000 !important;
}

.nps-aid-contrast-yellow * {
  color: #ff0 !important;
}

.nps-aid-accessibility .nps-aid-contrast-yellow,
.nps-aid-accessibility .nps-aid-contrast-yellow * {
  background: var(--primary-color) !important;
  color: #fff !important;
}

body.nps-aid-saturation-low *:not(.nps-aid-accessibility, .nps-aid-accessibility *) {
  filter: saturate(50%) !important;
}

body.nps-aid-saturation-grayscale *:not(.nps-aid-accessibility, .nps-aid-accessibility *) {
  filter: saturate(0%) !important;
}

body.nps-aid-saturation-high *:not(.nps-aid-accessibility, .nps-aid-accessibility *) {
  filter: saturate(150%) !important;
}

.nps-aid-accessibility,
.nps-aid-accessibility * {
  filter: none !important;
  transform: none !important;
}

.nps-aid-text-spacing * {
  letter-spacing: 0.12em !important;
  word-spacing: 0.16em !important;
  line-height: 1.8 !important;
}

.nps-aid-line-spacing * {
  line-height: 2 !important;
}

body.nps-aid-highlight-links a:not(.nps-aid-accessibility a) {
  background-color: #000 !important;
  color: #ff0 !important;
  outline: 1px solid #ff0 !important;
  text-decoration: underline !important;
  padding: 2px 4px !important;
}

body.nps-aid-hide-images img:not(.nps-aid-accessibility img) {
  display: none !important;
}

body.nps-aid-hide-images [style*="background-image"]:not(.nps-aid-accessibility, .nps-aid-accessibility *) {
  background-image: none !important;
}

/* Highlight all links (text and images) only on keyboard focus for accessibility */
a:focus-visible:not(.nps-aid-accessibility a) {
  outline: 3px solid var(--highlight-color) !important;
  outline-offset: 2px !important;
}

@media (max-width: 600px) {
  .nps-aid-accessibility .accessibility-toggle {
    top: auto;
    bottom: 0;
    padding: clamp(6px, 1.5vw, 8px);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    transform: none;
    border-radius: 4px 4px 0 0;
  }

  .nps-aid-accessibility .accessibility-toolbar {
    width: clamp(200px, 80vw, 250px);
    right: calc(-1 * clamp(200px, 80vw, 250px));
    max-height: 100vh;
    overflow-y: auto;
  }

  .nps-aid-accessibility .accessibility-toolbar .logo-link {
    max-width: 60%;
  }

  .nps-aid-accessibility .accessibility-toolbar .mobile-menu-button {
    display: block;
  }

  .nps-aid-accessibility .accessibility-toolbar button {
    font-size: clamp(0.7rem, 1.8vw, 0.8rem);
    padding: clamp(6px, 1.5vw, 8px);
  }

  .nps-aid-accessibility .accessibility-toolbar button::after {
    font-size: clamp(0.6rem, 1.5vw, 0.7rem);
  }

  .nps-aid-accessibility .saturation-reset-button {
    bottom: clamp(8px, 2vw, 10px);
    padding: clamp(6px, 1.5vw, 8px) clamp(12px, 2.5vw, 16px);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
  }

  .nps-aid-accessibility .screen-reader-modal,
  .nps-aid-accessibility .page-structure-modal,
  .nps-aid-accessibility .mobile-menu-modal {
    width: clamp(200px, 80vw, 250px);
    padding: clamp(10px, 2vw, 15px);
  }

  .nps-aid-accessibility .screen-reader-modal button::after,
  .nps-aid-accessibility .mobile-menu-modal button::after {
    font-size: clamp(0.6rem, 1.5vw, 0.7rem);
  }
}

@media (max-width: 400px) {
  .nps-aid-accessibility .accessibility-toggle {
    padding: clamp(4px, 1vw, 6px);
    font-size: clamp(0.7rem, 1.8vw, 0.8rem);
  }
}