/* ─────────────────────────────────────────────
   _dropdown.css — Dropdown Menu
   ─────────────────────────────────────────────
   API (native details):
     <details class="dropdown">
       <summary class="dropdown-trigger btn btn-ghost">
         Menu <span class="dropdown-arrow"></span>
       </summary>
       <div class="dropdown-menu">
         <a href="#" class="dropdown-item">Item</a>
         <div class="dropdown-divider"></div>
         <a href="#" class="dropdown-item is-danger">Delete</a>
       </div>
     </details>

   API (JS toggle):
     <div class="dropdown">
       <button class="dropdown-trigger" onclick="dropdownToggle(this)">...</button>
       <div class="dropdown-menu">...</div>
     </div>

   Position:  .dropdown-right  .dropdown-top  .dropdown-center
   Variants:  .dropdown-primary  .dropdown-dark
   Items:     .dropdown-item  .dropdown-item-icon  .dropdown-divider
              .dropdown-item.is-active  .dropdown-item.is-danger  [disabled]
───────────────────────────────────────────── */

/* ═══════════════════════════════
   WRAPPER
═══════════════════════════════ */
.dropdown {
  position: relative;
  display: inline-block;
}

/* ═══════════════════════════════
   TRIGGER (summary reset)
═══════════════════════════════ */
details.dropdown > summary.dropdown-trigger {
  list-style: none;
  cursor: pointer;
}

details.dropdown > summary.dropdown-trigger::-webkit-details-marker {
  display: none;
}

/* ═══════════════════════════════
   ARROW ICON
═══════════════════════════════ */
.dropdown-arrow {
  display: inline-block;
  width: 14px;
  height: 14px;
  position: relative;
  vertical-align: middle;
  flex-shrink: 0;
}

.dropdown-arrow::before,
.dropdown-arrow::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 7px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s;
}

.dropdown-arrow::before { left: 1px;  transform: translateY(-50%) rotate(45deg); }
.dropdown-arrow::after  { right: 1px; transform: translateY(-50%) rotate(-45deg); }

/* Rotate when open */
.dropdown.is-open .dropdown-arrow,
details.dropdown[open] .dropdown-arrow {
  transform: rotate(180deg);
}

/* ═══════════════════════════════
   MENU
═══════════════════════════════ */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 500;
  min-width: 180px;
  background: var(--color-dark-secondary);
  border: 1px solid color-mix(in srgb, var(--color-neutral-600) 22%, transparent);
  border-radius: var(--radius-lg, 12px);
  padding: 6px;
  box-shadow:
    0 4px 6px -1px color-mix(in srgb, #000 12%, transparent),
    0 12px 32px -4px color-mix(in srgb, #000 20%, transparent);

  /* hidden by default (JS-based) */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.97);
  transform-origin: top left;
  transition:
    opacity 0.18s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.18s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.18s;
}

/* JS open */
.dropdown.is-open > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* Native details open */
details.dropdown[open] > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* ═══════════════════════════════
   POSITION VARIANTS
═══════════════════════════════ */
.dropdown-right > .dropdown-menu {
  left: auto;
  right: 0;
  transform-origin: top right;
}

.dropdown-center > .dropdown-menu {
  left: 50%;
  transform: translateX(-50%) translateY(-6px) scale(0.97);
  transform-origin: top center;
}

.dropdown-center.is-open > .dropdown-menu,
details.dropdown-center[open] > .dropdown-menu {
  transform: translateX(-50%) translateY(0) scale(1);
}

.dropdown-top > .dropdown-menu {
  top: auto;
  bottom: calc(100% + 6px);
  transform-origin: bottom left;
  transform: translateY(6px) scale(0.97);
}

.dropdown-top.is-open > .dropdown-menu,
details.dropdown-top[open] > .dropdown-menu {
  transform: translateY(0) scale(1);
}

.dropdown-top.dropdown-right > .dropdown-menu {
  transform-origin: bottom right;
}

/* ═══════════════════════════════
   ITEMS
═══════════════════════════════ */
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-md, 8px);
  font-size: 14px;
  color: var(--color-light);
  text-decoration: none;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  line-height: 1.4;
  transition: background 0.14s, color 0.14s;
  user-select: none;
}

.dropdown-item:hover {
  background: color-mix(in srgb, var(--color-neutral-600) 10%, transparent);
  color: var(--color-light);
}

.dropdown-item.is-active {
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  font-weight: 500;
}

.dropdown-item.is-danger {
  color: var(--color-danger, #ef4444);
}

.dropdown-item.is-danger:hover {
  background: color-mix(in srgb, var(--color-danger, #ef4444) 10%, transparent);
}

.dropdown-item[disabled],
.dropdown-item.is-disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}

/* Icon column */
.dropdown-item-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.65;
}

/* Right-side meta (shortcut, badge) */
.dropdown-item-meta {
  margin-left: auto;
  font-size: 11px;
  color: var(--color-muted);
  opacity: 0.7;
}

/* Divider */
.dropdown-divider {
  height: 1px;
  background: color-mix(in srgb, var(--color-neutral-600) 16%, transparent);
  margin: 4px 0;
}

/* Section label */
.dropdown-label {
  padding: 6px 10px 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  user-select: none;
}

/* ═══════════════════════════════
   VARIANT: PRIMARY header
═══════════════════════════════ */
.dropdown-primary > .dropdown-menu {
  border-color: color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.dropdown-primary > .dropdown-menu::before {
  content: '';
  display: block;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px 2px 0 0;
  margin: -6px -6px 6px;
}

/* ═══════════════════════════════
   VARIANT: DARK menu
═══════════════════════════════ */
.dropdown-dark > .dropdown-menu {
  background: #111;
  border-color: rgba(255,255,255,0.1);
}

.dropdown-dark .dropdown-item {
  color: rgba(255,255,255,0.82);
}

.dropdown-dark .dropdown-item:hover {
  background: rgba(255,255,255,0.07);
  color: #fff;
}

.dropdown-dark .dropdown-divider {
  background: rgba(255,255,255,0.08);
}

.dropdown-dark .dropdown-label {
  color: rgba(255,255,255,0.35);
}