/* ===========================================================
   Center workspace, canvas, objects, selection, context menu
   =========================================================== */

.workspace {
  flex: 1 1 auto;
  position: relative;
  overflow: hidden;
  background: var(--workspace-bg);
  min-width: 0;
}

#grid-canvas,
#fx-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
#fx-canvas { pointer-events: none; z-index: 5; }

.world {
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 0;
  transform-origin: 0 0;
  z-index: 3;
}

/* ---------- Lab objects ---------- */
.lab-obj {
  position: absolute;
  transform-origin: center center;
  cursor: grab;
  will-change: transform;
  transition: filter var(--t-fast);
}
.lab-obj:hover { filter: drop-shadow(0 0 6px rgba(33,150,243,.45)); }
.lab-obj.dragging { cursor: grabbing; filter: drop-shadow(0 6px 14px rgba(0,0,0,.5)); }
.lab-obj.selected { filter: drop-shadow(0 0 8px rgba(33,150,243,.7)); }
.lab-obj svg { display: block; width: 100%; height: 100%; pointer-events: none; }
.lab-obj .obj-label {
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0,0,0,.8);
}

/* heated glow */
.lab-obj.heated svg { filter: drop-shadow(0 0 5px rgba(255,140,0,.5)); }

/* ---------- Selection overlay (screen space) ---------- */
#overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 8;
}

.sel-box {
  position: absolute;
  border: 1.5px solid var(--accent);
  border-radius: 4px;
  box-shadow: 0 0 0 1px rgba(33,150,243,.25);
  pointer-events: none;
}

.handle {
  position: absolute;
  width: 11px; height: 11px;
  background: #fff;
  border: 2px solid var(--accent);
  border-radius: 2px;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}
.handle.corner { cursor: nwse-resize; }
.handle.corner.ne, .handle.corner.sw { cursor: nesw-resize; }
.handle.rotate {
  border-radius: 50%;
  cursor: grab;
  background: var(--accent);
  border-color: #fff;
}
.handle.rotate::after {
  content: "";
  position: absolute;
  left: 50%; top: 100%;
  width: 1.5px; height: 18px;
  background: var(--accent);
  transform: translateX(-50%);
}

/* marquee multi-select rectangle */
.marquee {
  position: absolute;
  border: 1px dashed var(--accent-2);
  background: rgba(33,150,243,.10);
  pointer-events: none;
  z-index: 9;
}

/* drop indicator when an object can accept a drop */
.lab-obj.drop-target svg { filter: drop-shadow(0 0 10px rgba(76,175,80,.9)); }
.lab-obj.snap-aligned svg { filter: drop-shadow(0 0 8px rgba(255,179,0,.8)); }

/* ---------- Context menu ---------- */
.context-menu {
  position: absolute;
  z-index: 200;
  min-width: 190px;
  background: var(--panel-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 5px;
  animation: pop-in .1s ease;
}
.cm-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px;
  border-radius: 5px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  transition: var(--t-fast);
}
.cm-item:hover { background: var(--accent); color: #fff; }
.cm-item.danger:hover { background: var(--danger); }
.cm-item .cm-key { font-size: 11px; color: var(--text-mute); }
.cm-item:hover .cm-key { color: rgba(255,255,255,.8); }
.cm-sep { height: 1px; background: var(--border); margin: 4px 6px; }

/* empty-state hint over workspace */
.ws-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-mute);
  pointer-events: none;
  z-index: 2;
}
.ws-hint .big { font-size: 54px; opacity: .35; }
.ws-hint .txt { font-size: 15px; }
.ws-hint .sub { font-size: 12.5px; color: var(--text-mute); opacity: .8; }

/* panning cursor */
.workspace.panning { cursor: grabbing; }
.workspace.space-ready { cursor: grab; }