/**
 * Dr. Anil Kumar's Eye Hospital ("drakeh") Utilities
 * =================================================
 * Targeted, minimal utilities used across layouts and templates.
 */

/* Accessible visually hidden class for screen-readers and skip-links */
.visually-hidden {
  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;
}

/* Secondary muted text */
.text-muted {
  color: var(--color-text-muted) !important;
}

/* Background lock when mobile navigation or modal is open */
.no-scroll {
  overflow: hidden !important;
  touch-action: none !important;
}

/* Small clinical green vertical accent bar */
.accent-bar {
  display: inline-block;
  width: 4px;
  height: 1.25em;
  background-color: var(--color-green-500);
  border-radius: var(--radius-sm);
  margin-right: var(--space-2);
  vertical-align: text-bottom;
}

/* Text alignment */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

/* Responsive visibility utilities */
@media (max-width: 991px) {
  .hide-on-mobile {
    display: none !important;
  }
}

@media (min-width: 992px) {
  .show-on-mobile-only {
    display: none !important;
  }
}

/* Clinical citation superscripts */
.citation-sup {
  font-size: 0.75em;
  vertical-align: super;
  color: var(--color-blue-600);
  font-weight: 600;
  text-decoration: none;
  padding: 0 2px;
}
.citation-sup:hover {
  text-decoration: underline;
  color: var(--color-blue-700);
}

/* Sidebar navigation links */
.sidebar-nav-link {
  color: var(--color-text);
  text-decoration: none;
  display: block;
  padding: 4px 0;
  transition: color 0.15s ease, transform 0.15s ease;
}
.sidebar-nav-link:hover {
  color: var(--color-blue-600);
  transform: translateX(2px);
}

/* --------------------------------------------------------------------------
 * Byline Strip (Medical Governance)
 * ----------------------------------------------------------------------- */
.byline-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.byline-item {
  display: inline;
  line-height: var(--lh-normal);
}

.byline-item strong {
  color: var(--color-text);
  font-weight: 600;
  white-space: nowrap;
}

.byline-item:not(:last-child)::after {
  content: "·";
  margin: 0 var(--space-2);
  color: var(--color-border-dark);
  font-weight: bold;
}

@media (max-width: 768px) {
  .byline-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
  .byline-item {
    display: block;
    width: 100%;
  }
  .byline-item:not(:last-child)::after {
    display: none;
  }
}

/* --------------------------------------------------------------------------
 * Responsive Data Tables (Section L Pattern)
 * ----------------------------------------------------------------------- */
.table-wrap {
  position: relative;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
}

.table-wrap:focus-visible {
  outline: 3px solid var(--color-blue-600);
  outline-offset: 2px;
}

.c-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--fs-sm);
}

.table-scroll-hint {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 768px) {
  .table-scroll-hint {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
 * Base Action & Admin Utility Classes
 * ----------------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.cancel-link {
  color: var(--color-text-muted);
  text-decoration: underline;
}

.content-main {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-6);
}

.default {
  background-color: var(--color-blue-600);
  color: #FFFFFF;
}