// =============================================================================
// Slash Command Menu
// Popup shown when the user types `/`. Rendered by
// `createSlashSuggestionRenderer()` and positioned at the cursor.
// Visual vocabulary mirrors the floating menu for consistency.
//
// Class names follow the renderer's output verbatim:
//   - `dm-slash-command-menu` (outer)
//   - `dm-slash-command-group` / `-group-label`
//   - `dm-slash-command-item` / `-item-icon` / `-item-text` / `-item-label`
//     / `-item-description` / `-item-shortcut`
//   - `dm-slash-command-empty`
//   - `dm-slash-command-query` (inline decoration on the active `/query`)
//
// We intentionally do NOT nest the inner elements under `.dm-slash-command-menu`
// (a previous version did so via SCSS `&-item` concatenation, which produced
// `.dm-slash-command-menu-item-*` selectors that the renderer never emitted -
// items rendered without size constraints, ballooning the menu).
// =============================================================================

.dm-slash-command-menu {
  position: absolute;
  // border-box so the measured available space maps 1:1 to max-height below.
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 17rem;
  // `positionFloatingOnce({ constrainHeight })` writes the space around the
  // caret to `--dm-available-height`; plain 22rem cap when unset.
  max-height: min(22rem, var(--dm-available-height, 100vh));
  overflow-y: auto;
  padding: 0.375rem;
  background: var(--dm-toolbar-bg, var(--dm-bg, #ffffff));
  border: 1px solid var(--dm-border-color, #e5e7eb);
  border-radius: var(--dm-toolbar-border-radius, 0.5rem);
  box-shadow: var(--dm-popover-shadow,
    0 10px 25px rgba(0, 0, 0, 0.08),
    0 4px 10px rgba(0, 0, 0, 0.04));
  z-index: var(--dm-z-popover, 50);

  // Slim custom scrollbar - matches the floating-menu styling.
  scrollbar-width: thin;
  scrollbar-color: var(--dm-scrollbar-thumb, rgba(0, 0, 0, 0.18)) transparent;

  &::-webkit-scrollbar {
    width: 6px;
  }
  &::-webkit-scrollbar-track {
    background: transparent;
    margin: 0.375rem 0;
  }
  &::-webkit-scrollbar-thumb {
    background: var(--dm-scrollbar-thumb, rgba(0, 0, 0, 0.18));
    border-radius: 3px;
    transition: background-color 0.15s;
  }
  &::-webkit-scrollbar-thumb:hover {
    background: var(--dm-scrollbar-thumb-hover, rgba(0, 0, 0, 0.28));
  }
}

// Inline decoration on the active `/query` range (highlight subtle).
.dm-slash-command-query {
  color: var(--dm-accent, #2563eb);
}

// ---------------------------------------------------------------------------
// Group heading
// ---------------------------------------------------------------------------
.dm-slash-command-group-label {
  padding: 0.375rem 0.5rem 0.125rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--dm-muted, #6b7280);
  user-select: none;
}

.dm-slash-command-group {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

// ---------------------------------------------------------------------------
// Menu item button
// ---------------------------------------------------------------------------
.dm-slash-command-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.375rem 0.5rem;
  border: none;
  border-radius: var(--dm-button-border-radius, 0.375rem);
  background: transparent;
  color: var(--dm-editor-text, inherit);
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition: background-color 0.1s;

  // Selected state set imperatively by the renderer so keyboard and
  // mouse selection share the same visual.
  &[data-selected] {
    background: var(--dm-button-hover-bg, rgba(0, 0, 0, 0.04));
  }

  &:focus-visible {
    // INSET ring (-2px): slash items are tightly packed; outset would overlap
    // the neighbour. Matches the context-menu item rule.
    outline: 2px solid var(--dm-accent, #2563eb);
    outline-offset: -2px;
  }
}

.dm-slash-command-item-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  color: var(--dm-editor-text, inherit);

  svg {
    width: 1.125rem;
    height: 1.125rem;
  }
}

.dm-slash-command-item-text {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  line-height: 1.25;
}

.dm-slash-command-item-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--dm-editor-text, inherit);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dm-slash-command-item-description {
  font-size: 0.75rem;
  color: var(--dm-muted, #6b7280);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

// Shortcut hint chip (e.g. `# `, `> `)
.dm-slash-command-item-shortcut {
  flex-shrink: 0;
  padding: 0.0625rem 0.375rem;
  font-family: var(--dm-code-font, ui-monospace, monospace);
  font-size: 0.6875rem;
  color: var(--dm-muted, #6b7280);
  background: var(--dm-surface, #f8f9fa);
  border: 1px solid var(--dm-border-color, #e5e7eb);
  border-radius: 0.25rem;
  user-select: none;
}

// Shown when the filter returns no items
.dm-slash-command-empty {
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--dm-muted, #6b7280);
  user-select: none;
}