/* ========================================
   Utility Styles
   MGH ED Patient Portal
   ======================================== */

/* ========================================
   Reduced Motion Preference
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .accordion-content {
    transition: none;
  }

  .zone-info-panel {
    transition: none;
  }
}

/* ========================================
   Visually Hidden (Screen reader only)
   ======================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
  .site-header,
  .map-overlay,
  .skip-link,
  #map-btn {
    display: none !important;
  }

  .accordion-content {
    max-height: none !important;
    visibility: visible !important;
  }

  .accordion-content[hidden] {
    display: block !important;
    max-height: none !important;
    visibility: visible !important;
  }

  .accordion-header {
    background-color: transparent !important;
    border-bottom: 2px solid #000 !important;
    border-radius: 0 !important;
  }

  .accordion-arrow {
    display: none !important;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
}

/* ========================================
   High Contrast Mode
   ======================================== */

@media (forced-colors: active) {
  .accordion-header {
    border: 2px solid ButtonText;
  }

  .zone-card,
  .test-card {
    border: 1px solid ButtonText;
  }
}

/* ========================================
   Reduced Transparency Preference
   Fallback to opaque backgrounds when
   user prefers reduced transparency.
   ======================================== */

@media (prefers-reduced-transparency: reduce) {
  .zone-info-panel,
  .language-modal {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background-color: var(--glass-bg-opaque);
  }

  .accordion-header[aria-expanded="true"] {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .accordion-header::before {
    display: none;
  }

  /* Restore solid accordion section backgrounds */
  [data-color="red"] .accordion-header { background: linear-gradient(160deg, var(--section-red), var(--section-red-end)); }
  [data-color="orange"] .accordion-header { background: linear-gradient(160deg, var(--section-orange), var(--section-orange-end)); }
  [data-color="yellow"] .accordion-header { background: linear-gradient(160deg, var(--section-yellow), var(--section-yellow-end)); }
  [data-color="green"] .accordion-header { background: linear-gradient(160deg, var(--section-green), var(--section-green-end)); }
  [data-color="blue"] .accordion-header { background: linear-gradient(160deg, var(--section-blue), var(--section-blue-end)); }
  [data-color="gray"] .accordion-header { background: linear-gradient(160deg, var(--section-gray), var(--section-gray-end)); }
}

/* ========================================
   Backdrop Filter Fallback
   For browsers that do not support
   backdrop-filter (graceful degradation).
   ======================================== */

@supports not (backdrop-filter: blur(1px)) {
  .zone-info-panel {
    background-color: var(--bg);
  }

  .language-modal {
    background-color: var(--bg);
  }

  [data-color="red"] .accordion-header { background: linear-gradient(160deg, var(--section-red), var(--section-red-end)); }
  [data-color="orange"] .accordion-header { background: linear-gradient(160deg, var(--section-orange), var(--section-orange-end)); }
  [data-color="yellow"] .accordion-header { background: linear-gradient(160deg, var(--section-yellow), var(--section-yellow-end)); }
  [data-color="green"] .accordion-header { background: linear-gradient(160deg, var(--section-green), var(--section-green-end)); }
  [data-color="blue"] .accordion-header { background: linear-gradient(160deg, var(--section-blue), var(--section-blue-end)); }
  [data-color="gray"] .accordion-header { background: linear-gradient(160deg, var(--section-gray), var(--section-gray-end)); }
}