/* ── Data Tree ─────────────────────────────────────── */

#data-tree {
  user-select: none;
}

/* ── Contour popup ─────────────────────────────────── */

.cp-popup {
  position: fixed;
  z-index: 20001;
  background: var(--bg-panel);
  border: 1px solid var(--border-panel);
  border-radius: 5px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.45);
  padding: 10px 12px;
  min-width: 210px;
  font-size: 12px;
  color: var(--text-secondary);
}

.cp-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 7px;
}

.cp-row:last-child { margin-bottom: 0; }

.cp-label {
  flex: 1;
  font-size: 11px;
  color: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.cp-mode-group {
  display: flex;
  gap: 4px;
}

.cp-mode-btn {
  background: none;
  border: 1px solid var(--border-btn);
  border-radius: 3px;
  color: var(--text-secondary);
  font-size: 11px;
  padding: 2px 9px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.cp-mode-btn:hover { background: var(--bg-hover); }

.cp-mode-btn.active {
  background: var(--bg-selected);
  color: var(--text-bright);
  border-color: var(--border-btn-hover);
}

.cp-contour-opts {
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--border-subtle);
  margin-bottom: 4px;
}

.cp-contour-opts.hidden { display: none; }

.cp-num {
  width: 64px;
  background: var(--bg-hover);
  border: 1px solid var(--border-btn);
  border-radius: 3px;
  color: var(--text-primary);
  font-size: 11px;
  padding: 2px 5px;
}

.cp-num:focus { outline: none; border-color: var(--border-btn-hover); }

.cp-color {
  width: 26px;
  height: 20px;
  border: 1px solid var(--border-btn);
  border-radius: 3px;
  padding: 0;
  cursor: pointer;
  background: none;
}

.cp-check { cursor: pointer; }

.cp-divider {
  margin: 6px 0;
  border-top: 1px solid var(--border-subtle);
}

.tree-empty,
.meta-empty {
  color: var(--text-faint);
  font-size: 12px;
  font-style: italic;
  margin: 0;
}

/* ── Tree nodes & rows ────────────────────────────── */

.tree-node {
  margin: 0;
}

.tree-node.collapsed > .tree-children {
  display: none;
}

.tree-node.collapsed > .tree-row > .tree-toggle {
  transform: rotate(-90deg);
}

.tree-children {
  padding-left: 14px;
}

.tree-row {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 6px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: background 0.1s;
}

.tree-row:hover {
  background: var(--bg-hover);
}

.tree-row.selected {
  background: var(--bg-selected);
  color: var(--text-bright);
}

/* ── Toggle arrow ─────────────────────────────────── */

.tree-toggle {
  display: inline-block;
  font-size: 9px;
  width: 12px;
  text-align: center;
  flex-shrink: 0;
  transition: transform 0.15s ease;
  color: var(--text-muted);
}

/* ── Icons & labels ───────────────────────────────── */

.tree-icon {
  font-size: 13px;
  flex-shrink: 0;
}

.tree-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.tree-row-file .tree-label {
  font-weight: 600;
}

/* ── Flat DEM row ─────────────────────────────────── */

.tree-row-dem .tree-label {
  font-weight: 600;
}

.tree-row-group .tree-label {
  color: var(--text-label);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.4px;
  font-weight: 600;
}

.tree-group-count {
  font-size: 11px;
  color: var(--text-faint);
  margin-left: 4px;
  flex-shrink: 0;
}

/* ── Row actions (right side) ─────────────────────── */

.tree-row-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-shrink: 0;
}

/* ── Visibility button ────────────────────────────── */

.tree-visibility {
  flex-shrink: 0;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s;
  display: flex;
  align-items: center;
}

.tree-visibility:hover {
  opacity: 1;
}

/* ── Jump-to button ───────────────────────────────── */

.tree-jumpto {
  flex-shrink: 0;
  background: none;
  border: none;
  color: currentColor;
  padding: 0;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s, color 0.15s;
  display: flex;
  align-items: center;
}

.tree-jumpto:hover {
  opacity: 1;
  color: var(--accent-blue);
}

/* ── Delete button ────────────────────────────────── */

.tree-delete,
.tree-delete-obj {
  flex-shrink: 0;
  background: none;
  border: none;
  color: currentColor;
  padding: 0;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s, color 0.15s;
  display: flex;
  align-items: center;
}

.tree-delete:hover,
.tree-delete-obj:hover {
  opacity: 1;
  color: var(--accent-red);
}

/* ── Contour toggle button ─────────────────────────── */

.tree-contour {
  flex-shrink: 0;
  background: none;
  border: none;
  color: currentColor;
  padding: 0;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s, color 0.15s;
  display: flex;
  align-items: center;
}

.tree-contour:hover {
  opacity: 1;
  color: var(--accent-blue);
}

.tree-contour.active {
  opacity: 1;
  color: var(--accent-blue);
}

/* ── Rename button ────────────────────────────────── */

.tree-rename-btn {
  flex-shrink: 0;
  background: none;
  border: none;
  color: currentColor;
  padding: 0;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s, color 0.15s;
  display: flex;
  align-items: center;
}

.tree-rename-btn:hover {
  opacity: 1;
  color: var(--accent-blue);
}

/* ── Save/export button ───────────────────────────── */

.tree-save {
  flex-shrink: 0;
  background: none;
  border: none;
  color: currentColor;
  padding: 0;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.15s, color 0.15s;
  display: flex;
  align-items: center;
}

.tree-save:hover {
  opacity: 1;
  color: var(--accent-blue);
}

/* ── Inline rename input ──────────────────────────── */

.tree-rename-input {
  background: var(--bg-input, rgba(255,255,255,0.1));
  border: 1px solid var(--accent-blue, #4da6ff);
  border-radius: 3px;
  color: var(--text-bright, #fff);
  font-size: 13px;
  font-family: inherit;
  padding: 0 4px;
  height: 18px;
  flex: 1;
  min-width: 0;
  outline: none;
}

/* ── Color swatch button ──────────────────────────── */

.tree-color-swatch {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.15s, border-color 0.15s;
}

.tree-color-swatch:hover {
  opacity: 1;
  border-color: rgba(255,255,255,0.6);
}

/* ── Delete confirmation popup ────────────────────── */

.delete-confirm-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  pointer-events: auto;
}

.delete-confirm-box {
  background: var(--bg-confirm-box);
  border: 1px solid var(--border-confirm);
  border-radius: 4px;
  padding: 20px 24px;
  min-width: 260px;
  text-align: center;
  box-shadow: var(--shadow-confirm);
}

.delete-confirm-msg {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0 0 16px;
}

.delete-confirm-msg strong {
  color: var(--text-bright);
}

.delete-confirm-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.delete-confirm-btn {
  padding: 6px 18px;
  border: none;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.delete-btn-cancel {
  background: var(--bg-cancel-btn);
  color: var(--text-label);
}

.delete-btn-cancel:hover {
  background: var(--bg-cancel-btn-hover);
  color: var(--text-bright);
}

.delete-btn-ok {
  background: var(--accent-red);
  color: #fff;
}

.delete-btn-ok:hover {
  background: var(--accent-red-hover);
}

/* ── Metadata panel ───────────────────────────────── */

#data-metadata {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
}

.meta-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 6px;
}

.meta-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.meta-table tr:nth-child(even) {
  background: var(--bg-meta-row-even);
}

.meta-key {
  color: var(--text-muted);
  padding: 2px 8px 2px 0;
  white-space: nowrap;
  vertical-align: top;
}

.meta-val {
  color: var(--text-secondary);
  padding: 2px 0;
  word-break: break-all;
}