/* Learn nav dropdown — desktop hover; mobile nested details */

/*
 * Author display:flex/inline-flex beats the UA [hidden] { display:none } rule.
 * Preview-only Learn stays in the DOM with hidden until JS unhides on preview.*;
 * without this, Learn leaks on production apex.
 */
.frd-preview-only[hidden],
.nav-learn[hidden],
.nav-learn-mobile[hidden] {
  display: none !important;
}

.nav-learn {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-learn-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  text-decoration: none;
  color: inherit;
}

.nav-learn-trigger::after {
  content: '';
  width: 0.4rem;
  height: 0.4rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-0.1rem);
  opacity: 0.75;
}

.nav-learn-panel {
  position: absolute;
  top: calc(100% + 0.35rem);
  left: 50%;
  transform: translateX(-50%);
  min-width: 15.5rem;
  max-width: min(22rem, 90vw);
  padding: 0.4rem 0;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid #d4c3b0;
  border-radius: 0.65rem;
  box-shadow: 0 10px 28px rgba(60, 47, 37, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.12s ease, visibility 0.12s ease;
  z-index: 60;
}

.nav-learn-panel::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -0.55rem;
  height: 0.55rem;
}

.nav-learn:hover .nav-learn-panel,
.nav-learn:focus-within .nav-learn-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-learn-panel a {
  display: block;
  padding: 0.55rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #3c2f25;
  text-decoration: none;
  white-space: normal;
  line-height: 1.3;
}

.nav-learn-panel a:hover,
.nav-learn-panel a:focus-visible {
  background: #f8f1eb;
  color: #8c6f5c;
  outline: none;
}

.nav-learn-panel a[aria-current="page"] {
  color: #8c6f5c;
  background: #faf6f1;
}

.nav-learn.nav-learn-current .nav-learn-trigger {
  color: #8c6f5c;
}

/* Mobile nested Learn */
.nav-learn-mobile {
  border-bottom: 1px solid #f0e6dc;
}

.nav-learn-mobile > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 24px;
  font-size: 0.875rem;
  font-weight: 500;
  color: #3c2f25;
}

.nav-learn-mobile > summary::-webkit-details-marker { display: none; }

.nav-learn-mobile > summary::after {
  content: '';
  float: right;
  width: 0.4rem;
  height: 0.4rem;
  margin-top: 0.35rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.7;
}

.nav-learn-mobile[open] > summary {
  color: #8c6f5c;
  background: #f8f1eb;
}

.nav-learn-mobile[open] > summary::after {
  transform: rotate(225deg);
  margin-top: 0.5rem;
}

.nav-learn-mobile-panel a {
  display: block;
  padding: 12px 24px 12px 36px;
  font-size: 0.875rem;
  font-weight: 500;
  border-bottom: 1px solid #f0e6dc;
  color: #3c2f25;
  text-decoration: none;
}

.nav-learn-mobile-panel a:hover {
  color: #8c6f5c;
  background: #f8f1eb;
}

.nav-learn-mobile-panel a[aria-current="page"] {
  color: #8c6f5c;
}

/* Mobile drawer: scroll when Learn expands so all topics are reachable */
@media (max-width: 767px) {
  #nav-mobile-menu.nav-mobile-menu,
  .nav-mobile-menu {
    max-height: min(70vh, calc(100dvh - 5.5rem));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding-bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-learn-panel { transition: none; }
}