/* === Node cards ============================================================== */
.node-wrap { display: contents; }
.node {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r);
  padding: 8px 10px;
  margin-bottom: 8px;
  box-shadow: var(--shadow-sm);
}
.node.node-group { border-left: 3px solid var(--c-primary); }
.node.node-item  { border-left: 3px solid #80cbc4; }

.node-header {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.node-header-top {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  min-width: 0;
}
.node-title { display: contents; }

/* === Drag & drop ============================================================= */
.node-drag-handle {
  font-size: 14px;
  color: #ccc;
  cursor: grab;
  padding: 0 3px;
  flex-shrink: 0;
  user-select: none;
  line-height: 1;
}
.node-drag-handle:hover { color: #999; }
.node-drag-handle:active { cursor: grabbing; }
.node-dragging { opacity: 0.4; }

.drop-zone {
  height: 0;
  margin: 0;
  overflow: hidden;
  border-radius: 2px;
  border: 1px dashed transparent;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: transparent;
  transition: height .1s, margin .1s, border-color .1s, color .1s, background .1s;
}
body.dragging .drop-zone-above {
  height: 28px;
  margin: 2px 0;
  border-color: #ddd;
  color: #bbb;
  pointer-events: auto;
}
.node-drop-target.drop-zone-above {
  background: var(--c-primary-lt);
  border-color: var(--c-primary);
}
.drop-zone-inside {
  height: 0;
  margin: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: transparent;
  border: 1px dashed transparent;
  border-radius: var(--r-sm);
  pointer-events: none;
  transition: height .1s, margin .1s, border-color .1s, color .1s, background .1s;
}
body.dragging .drop-zone-inside {
  height: 28px;
  margin: 4px 0;
  color: #bbb;
  border-color: #ddd;
  pointer-events: auto;
}
.node-drop-target.drop-zone-inside {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-primary-lt);
}
.drop-zone-root {
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: transparent;
  border: 1px dashed transparent;
  border-radius: 4px;
  margin-top: 4px;
  pointer-events: none;
  transition: border-color .1s, color .1s, background .1s;
}
body.dragging .drop-zone-root { color: #bbb; border-color: #ddd; pointer-events: auto; }
.drop-zone-root--active { border-color: var(--c-primary) !important; color: var(--c-primary); }

/* === Collapse toggle ========================================================= */
.node-collapse-btn {
  background: none;
  border: none;
  font-size: 10px;
  color: #aaa;
  cursor: pointer;
  padding: 0 2px;
  flex-shrink: 0;
  line-height: 1;
}
.node-collapse-btn:hover { color: var(--c-primary); }

/* === Node type label ========================================================= */
.node-type-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
}
.lbl-group { background: var(--c-primary-lt); color: var(--c-primary); cursor: pointer; }
.lbl-item  { background: var(--c-teal-lt);    color: var(--c-teal);    cursor: pointer; }
.lbl-info  { background: #f0f0f0;             color: #888;             cursor: pointer; }

.node-nav-btn {
  padding: 0 4px;
  background: none;
  border: none;
  font-size: 13px;
  line-height: 1;
  color: var(--c-text-2);
  cursor: pointer;
  opacity: .45;
  flex-shrink: 0;
  transition: opacity .15s, color .15s;
}
.node-nav-btn:hover { opacity: 1; color: var(--c-primary); }

/* === meta row: prefix + id labels =========================================== */
.node-meta-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 4px;
}
.node-meta-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .4px;
  text-transform: lowercase;
  flex-shrink: 0;
}
.node-meta-label--prefix { color: var(--c-amber); }
.node-meta-label--id     { color: var(--c-primary); }

/* === prefix input ============================================================ */
.node-prefix-input {
  font-family: monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--c-amber);
  flex: 1;
  min-width: 60px;
  padding: 2px 5px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: var(--c-amber-lt);
  transition: border-color .15s;
}
.node-prefix-input:hover { border-color: var(--c-amber); }
.node-prefix-input:focus { outline: none; border-color: var(--c-amber); }

/* === linkId input ============================================================ */
.node-linkid-input {
  font-family: monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--c-primary);
  flex: 1;
  min-width: 60px;
  padding: 2px 5px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: var(--c-primary-lt);
  transition: border-color .15s;
}
.node-linkid-input:hover { border-color: var(--c-primary); }
.node-linkid-input:focus { outline: none; border-color: var(--c-primary); }

/* === Expandable title ======================================================== */
.node-title-row {
  display: block;
  width: 100%;
  margin-top: 0;
  padding: 0 4px;
}
.node-title-display {
  display: block;
  font-size: 13px;
  font-weight: 500;
  padding: 3px 6px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  color: var(--c-text);
  cursor: pointer;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 24px;
  transition: border-color .15s, background .15s;
}
.node-title-display:hover {
  border-color: var(--c-border);
  background: var(--c-surface);
}
.node-title-textarea {
  display: block;
  width: 100%;
  font-size: 13px;
  font-weight: 500;
  padding: 3px 6px;
  border: 1px solid var(--c-primary);
  border-radius: var(--r-sm);
  background: var(--c-primary-lt);
  color: var(--c-text);
  resize: vertical;
  font-family: inherit;
  box-sizing: border-box;
}
/* Legacy rule — kept for safety */
.node-title-input {
  font-size: 13px;
  font-weight: 500;
  padding: 3px 6px;
  flex: 1 1 140px;
  min-width: 100px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--c-text);
  transition: border-color .15s, background .15s;
}
.node-title-input:hover { border-color: var(--c-border); }
.node-title-input:focus { outline: none; border-color: var(--c-primary); background: var(--c-primary-lt); }