:root {
  --dropdown-open-dur: 250ms;
  --dropdown-close-dur: 150ms;
  --dropdown-pre-scale: 0.97;
  --dropdown-closing-scale: 0.99;
  --dropdown-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

.t-dropdown {
  transform-origin: top left;
  transform: scale(var(--dropdown-pre-scale));
  opacity: 0;
  pointer-events: none;
  transition:
    transform var(--dropdown-open-dur) var(--dropdown-ease),
    opacity   var(--dropdown-open-dur) var(--dropdown-ease);
  will-change: transform, opacity;
}
.t-dropdown[data-origin="top-right"]     { transform-origin: top right; }
.t-dropdown[data-origin="top-center"]    { transform-origin: top center; }
.t-dropdown[data-origin="bottom-left"]   { transform-origin: bottom left; }
.t-dropdown[data-origin="bottom-center"] { transform-origin: bottom center; }
.t-dropdown[data-origin="bottom-right"]  { transform-origin: bottom right; }

.t-dropdown.is-open {
  transform: scale(1);
  opacity: 1;
  pointer-events: auto;
}
.t-dropdown.is-closing {
  transform: scale(var(--dropdown-closing-scale));
  opacity: 0;
  pointer-events: none;
  transition:
    transform var(--dropdown-close-dur) var(--dropdown-ease),
    opacity   var(--dropdown-close-dur) var(--dropdown-ease);
}

@media (prefers-reduced-motion: reduce) {
  .t-dropdown { transition: none !important; }
}

.tool-header-nav {
  position: relative;
  gap: 8px;
}

.tool-nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.tool-menu { border: 0; }

.tool-menu > summary {
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 44px;
  padding: 0 8px;
  border-radius: 8px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

.tool-menu > summary::-webkit-details-marker { display: none; }
.tool-menu[open] > summary { background: var(--hairline); }
.tool-menu[open] > summary img { transform: rotate(180deg); }
.tool-menu:not([open]) > .tool-menu-list { display: none; }

.tool-menu:not(.has-transition) > .t-dropdown {
  transform: none;
  opacity: 1;
  pointer-events: auto;
}

.tool-menu-list {
  position: absolute;
  z-index: 20;
  inset: 100% 0 auto auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 20px;
  width: min(740px, 100%);
  max-height: calc(100vh - 82px);
  overflow: auto;
  overscroll-behavior: contain;
  padding: clamp(12px, 2vw, 20px);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  background: var(--canvas);
  color: var(--primary);
  box-shadow: 0 14px 40px #17251e26;
}

.tool-menu-list h3 {
  margin: 0 0 4px;
  font-size: 13px;
  color: var(--action);
}

.tool-menu-list .tool-card {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  align-content: center;
  column-gap: 10px;
  min-height: 44px;
  padding: 6px;
  border-radius: 6px;
  color: inherit;
  text-decoration: none;
}

.tool-menu-list .tool-card:is(:hover, :focus-visible, [aria-current="page"]) {
  background: var(--hairline);
}

.tool-menu-list .tool-icon { grid-row: span 2; align-self: center; }
.tool-menu-list strong { font-size: 14px; line-height: 1.3; }
.tool-menu-list p { margin: 0; padding: 0; color: var(--slate); font-size: 12px; line-height: 1.35; }
.tool-menu-list .t-learn-chevron { grid-column: 3; grid-row: 1 / span 2; align-self: center; }

@media (max-width: 700px) {
  .tool-nav-actions .nav-note { display: none; }
}

@media (max-width: 540px) {
  .tool-menu-list { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 380px) {
  .tool-header-nav .brand > span { display: none; }
}