/**
 * Desktop hover / keyboard focus dropdowns under .ld-nlinks.
 * Works on .ld-page (landing.css) and track hub pages (design-system tokens).
 */

/* Nav chrome + typography: styles/ld-nav-shell.css */

.ld-nlinks .ld-dropdown {
  position: relative;
  display: flex;
  align-items: center;
  align-self: stretch;
}

.ld-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
}

.ld-dropdown-trigger::after {
  content: '';
  width: 0;
  height: 0;
  margin-left: 1px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.45;
  margin-top: 2px;
}

.ld-dropdown-menu {
  position: absolute;
  z-index: 1100;
  left: 0;
  top: 100%;
  min-width: 220px;
  max-width: min(300px, 90vw);
  padding: 6px 0;
  margin: 0;
  list-style: none;
  background: var(--qd-color-bg-surface-1, var(--bg1, #12161f));
  border: 1px solid var(--qd-color-border-default, var(--brs, rgba(255, 255, 255, 0.12)));
  border-radius: var(--qd-radius-md, 10px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition:
    opacity 0.16s ease,
    transform 0.16s ease,
    visibility 0.16s;
  pointer-events: none;
}

.ld-dropdown:hover .ld-dropdown-menu,
.ld-dropdown:focus-within .ld-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.ld-dropdown-menu a {
  display: block;
  padding: 0.5em 1em;
  font-family: var(--qd-font-sans, 'IBM Plex Sans', system-ui, sans-serif);
  /* em: parent .ld-nav is 16px (Track hub baseline); avoid --qd-font-size-sm (rem → 17px on ld-page) */
  font-size: 0.875em;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--qd-color-text-secondary, var(--ts, rgba(226, 232, 240, 0.78)));
  border-radius: 0;
  white-space: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.ld-dropdown-menu a:hover {
  color: var(--qd-color-text-primary, var(--tp, #f8fafc));
  background: color-mix(in srgb, var(--qd-color-text-primary, #fff) 6%, transparent);
}

[data-theme='light'] .ld-dropdown-menu {
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
}

[data-theme='light'] .ld-dropdown-menu a:hover {
  background: rgba(0, 0, 0, 0.05);
}

/* Mobile sheet — indented sub-links (.ld-mob font-size: 16px in ld-nav-shell) */
.ld-mob-sub {
  padding-left: 1.35em !important;
  font-size: 0.875em !important;
  font-weight: 400 !important;
  letter-spacing: 0.01em;
  opacity: 0.92;
}

.ld-mob-divider {
  height: 1px;
  margin: 0.35em 0.5em;
  background: var(--qd-color-border-subtle, var(--brs, rgba(255, 255, 255, 0.08)));
  border: none;
  padding: 0;
}