.file-explorer {
  width: 100%;
  background: #252526;
  border-right: 1px solid #333;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-size: 12px;
  font-family: 'Segoe UI', sans-serif;
}

/* Two rows, not one: the title on top, the three actions under it. Side by
   side they set the pane's minimum width between them (a truncated "WORK..."
   next to buttons that must stay reachable); stacked, the panel is free to be
   narrow and the code editor takes the px that frees up. Vertical space is
   what this column has to spare. */
.file-explorer-header {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  gap: 3px;
  padding: 6px 6px 6px 8px;
  color: #9d9d9d;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3px;
  border-bottom: 1px solid #333;
  flex-shrink: 0;
}

.file-explorer-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-explorer-header-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: -2px; /* optical: line the first glyph up with the title */
}

.file-explorer-new-btn {
  background: none;
  border: none;
  color: #9d9d9d;
  cursor: pointer;
  padding: 2px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.file-explorer-new-btn svg,
.file-explorer-save-btn svg {
  width: 16px;
  height: 16px;
}

.file-explorer-new-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.file-explorer-save-btn {
  background: none;
  border: none;
  color: #9d9d9d;
  cursor: pointer;
  padding: 2px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.file-explorer-save-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-action-primary);
}

/* The Save button doubles as the auto-save indicator once a project is
   loaded (replaces the "Unsaved changes" text pill in the header). */
.file-explorer-save-btn.is-saved {
  color: #3fb950;
}
.file-explorer-save-btn.is-dirty {
  color: #f0883e;
}
.file-explorer-save-btn.is-saving {
  color: #3fb950;
  animation: velxio-pulse 1s ease-in-out infinite;
}
.file-explorer-save-btn.is-error {
  color: #f85149;
}
.file-explorer-save-btn.is-saved:hover,
.file-explorer-save-btn.is-dirty:hover,
.file-explorer-save-btn.is-error:hover {
  filter: brightness(1.25);
}

.file-explorer-list {
  flex: 1;
  overflow-y: auto;
  padding: 2px 0;
  scrollbar-width: thin;
  scrollbar-color: #3c3c3c transparent;
}

/* Rows are deliberately compact (VS Code density): the explorer is a narrow
   pane and every px of padding, indent or icon here is a px the code editor
   does not get. */
.file-explorer-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 6px;
  cursor: pointer;
  color: #ccc;
  border-radius: 3px;
  margin: 0 2px;
  font-size: 11px;
  line-height: 16px;
  white-space: nowrap;
  overflow: hidden;
  user-select: none;
}

.file-explorer-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.file-explorer-item-active {
  background: rgba(0, 113, 227, 0.12);
  color: #e2e2e2;
}

.file-explorer-item-new {
  background: rgba(255, 255, 255, 0.04);
}

.file-explorer-icon {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  opacity: 0.8;
}

.file-explorer-icon svg {
  width: 16px;
  height: 16px;
}

.file-explorer-name {
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.file-explorer-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #e8a87c;
  flex-shrink: 0;
}

.file-explorer-rename-input {
  flex: 1;
  background: #3c3c3c;
  border: 1px solid var(--color-action-primary);
  color: #fff;
  font-size: 11px;
  padding: 1px 4px;
  border-radius: 2px;
  outline: none;
  min-width: 0;
  font-family: inherit;
}

/* Context menu */
.file-explorer-context-menu {
  position: fixed;
  background: #2d2d2d;
  border: 1px solid #3c3c3c;
  border-radius: 4px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  min-width: 120px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.file-explorer-context-menu button {
  background: none;
  border: none;
  color: #ccc;
  padding: 7px 14px;
  text-align: left;
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
}

.file-explorer-context-menu button:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.file-explorer-context-menu button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.ctx-delete:hover:not(:disabled) {
  color: #ef5350 !important;
}

/* ─── Board-grouped FileExplorer ─────────────────── */

.fe-board-section {
  margin-bottom: 2px;
}

/* A board section header is two rows: its actions, then its name. The name
   row then spans the full pane width, so "M5 Cardputer ADV" reads as a name
   instead of an ellipsis squeezed between three buttons and a status dot. */
.fe-board-header {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1px;
  padding: 2px 4px 3px 2px;
  cursor: pointer;
  color: #aaa;
  border-radius: 3px;
  margin: 0 2px;
  user-select: none;
  position: relative;
}

.fe-board-name-row {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
}

/* The actions keep their row reserved whether or not they are showing: a row
   that appears on hover would shove every file below it down by its height
   under the pointer. */
.fe-board-actions-row {
  display: flex;
  align-items: center;
  gap: 1px;
  min-height: 16px;
  padding-left: 2px;
}

/* Pushes the buttons to the right end and leaves the status dot at the left. */
.fe-board-actions-spacer {
  flex: 1 1 auto;
}

.fe-board-header:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #ddd;
}

.fe-board-header-active {
  background: rgba(255, 255, 255, 0.05);
  color: #e2e2e2;
}

.fe-collapse-btn {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  opacity: 0.6;
}

.fe-collapse-btn:hover {
  opacity: 1;
}

.fe-board-icon {
  font-size: 10px;
  flex-shrink: 0;
  line-height: 1;
}

.fe-board-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Inline rename input for a board/chip section header — flex into the label
   slot and match the header's compact type. */
.fe-section-rename-input {
  flex: 1;
  min-width: 0;
  font-size: 11px;
  font-weight: 600;
}

.fe-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.fe-board-new-btn {
  background: none;
  border: none;
  color: #9d9d9d;
  cursor: pointer;
  padding: 0;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.1s;
}

.fe-board-header:hover .fe-board-new-btn,
.fe-board-header-active .fe-board-new-btn {
  opacity: 1;
}

.fe-board-new-btn svg {
  width: 14px;
  height: 14px;
}

.fe-board-new-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.fe-board-files {
  /* files are indented to show hierarchy */
}

.fe-file-item {
  /* --fe-depth: nesting level inside the board's folder tree (0 = root).
     Root files sit just inside the board header's chevron, not under its
     icon — the deeper indent read as wasted margin in a 150px pane. */
  padding-left: calc(16px + var(--fe-depth, 0) * 12px) !important;
}

/* ── Folder rows ────────────────────────────────────────────────────────── */

.fe-folder-item {
  user-select: none;
}

.fe-folder-chevron {
  display: inline-flex;
  align-items: center;
  margin-right: 2px;
  color: #9d9d9d;
}

.fe-folder-icon {
  color: #d8a12a;
}

.fe-folder-actions {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 2px;
}

.fe-folder-item:hover .fe-folder-actions {
  display: inline-flex;
}

.fe-folder-actions button {
  display: inline-flex;
  align-items: center;
  background: none;
  border: none;
  padding: 1px;
  cursor: pointer;
  color: #9d9d9d;
}

.fe-folder-actions button:hover {
  color: #fff;
}

.fe-folder-actions button svg {
  width: 14px;
  height: 14px;
}

.fe-folder-actions .fe-folder-delete:hover {
  color: #f87171;
}