/* ==========================================================================
   可拖拽侧栏分隔线（v1.2）
   ========================================================================== */

.er-splitter {
  position: relative;
  flex: 0 0 7px;
  width: 7px;
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: col-resize;
  touch-action: none;
  user-select: none;
  z-index: 6;
}
.er-splitter::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 3px;
  width: 1px;
  background: var(--border);
  transition: background 0.12s var(--ease), width 0.12s var(--ease);
}
.er-splitter:hover::before,
.er-splitter:focus-visible::before,
.er-splitter.is-dragging::before {
  width: 2px;
  left: 2px;
  background: var(--accent-hover);
}
.er-splitter:focus-visible {
  outline: none;
}
.er-splitter.is-dragging::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  cursor: col-resize;
}
.er-splitter-arrow {
  display: block;
  line-height: 1;
  font-size: 13px;
  transform: translateY(-1px);
}
.er-splitter-toggle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: none;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 24px;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: var(--bg-elev);
  color: var(--text-faint);
  font-family: var(--font-ui);
  cursor: pointer;
  z-index: 2;
  box-shadow: var(--shadow-1);
}
.er-splitter:hover .er-splitter-toggle,
.er-splitter:focus .er-splitter-toggle,
.er-splitter.is-collapsed .er-splitter-toggle {
  display: flex;
}
.er-splitter-toggle:hover {
  color: var(--text);
  border-color: var(--accent);
}
[data-er-collapsed="true"] {
  display: none !important;
}

body.is-resizing,
body.is-resizing * {
  cursor: col-resize !important;
  user-select: none !important;
}