/* ── Design Area ── */
.design-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-color);
  overflow: hidden;
  position: relative;
}

.canvas-container-scroll {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: auto;
  padding: 40px;
  /* Subtle dot grid bg */
  background-image: radial-gradient(
    circle,
    var(--border-color) 1px,
    transparent 1px
  );
  background-size: 20px 20px;
}

/* ── Canvas ── */
.canvas-wrapper {
  box-shadow: var(--shadow-lg);
  border-radius: 2px;
  background-color: var(--canvas-border);
  padding: 1px;
  transition: box-shadow var(--transition-smooth);
}

.canvas-wrapper:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 0 1px var(--primary-color);
}

#design-canvas {
  background-color: #fff;
  position: relative;
  overflow: hidden;
  transform-origin: top left;
  box-sizing: border-box;
}

/* ── Status Bar ── */
.status-bar {
  display: flex;
  justify-content: flex-end;
  padding: 6px 16px;
  background-color: var(--panel-bg);
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  z-index: 5;
}

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
}

.zoom-controls input[type="range"] {
  width: 120px;
  cursor: pointer;
  accent-color: var(--primary-color);
  height: 4px;
}

/* ── Grid (1mm) ── */
.show-grid #design-canvas {
  background-image:
    linear-gradient(to right, rgba(0, 0, 0, 0.08) 0.5px, transparent 0.5px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.08) 0.5px, transparent 0.5px);
  background-size: 3.7795px 3.7795px;
}

/* Center Guidelines */
.show-grid #design-canvas::before,
.show-grid #design-canvas::after {
  content: "";
  position: absolute;
  background-color: rgba(99, 102, 241, 0.3);
  pointer-events: none;
  z-index: 100;
}

.show-grid #design-canvas::before {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

.show-grid #design-canvas::after {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

/* ═══════════════════════════════
   DESIGNER ELEMENTS
   ═══════════════════════════════ */

.designer-element {
  position: absolute;
  cursor: grab;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: box-shadow var(--transition-fast);
  -webkit-user-select: none;
  user-select: none;
}

.designer-element:active {
  cursor: grabbing;
}

.designer-element.selected {
  outline: calc(1px / var(--zoom, 1)) dashed rgba(99, 102, 241, 0.5);
}

/* Resize Handles */
.designer-element.selected > .resize-handle {
  position: absolute;
  width: calc(6px / var(--zoom, 1));
  height: calc(6px / var(--zoom, 1));
  background: white;
  border: calc(1px / var(--zoom, 1)) solid var(--primary-color);
  border-radius: 1px;
  z-index: 10;
  box-shadow: 0 0 calc(3px / var(--zoom, 1)) rgba(99, 102, 241, 0.3);
}

.designer-element.selected .resize-handle.tl {
  top: -3px;
  left: -3px;
  cursor: nwse-resize;
}
.designer-element.selected .resize-handle.tr {
  top: -3px;
  right: -3px;
  cursor: nesw-resize;
}
.designer-element.selected .resize-handle.bl {
  bottom: -3px;
  left: -3px;
  cursor: nesw-resize;
}
.designer-element.selected .resize-handle.br {
  bottom: -3px;
  right: -3px;
  cursor: nwse-resize;
}

/* Edge (mid-point) handles */
.designer-element.selected .resize-handle.tm {
  top: -3px;
  left: 50%;
  transform: translateX(-50%);
  cursor: ns-resize;
}
.designer-element.selected .resize-handle.bm {
  bottom: -3px;
  left: 50%;
  transform: translateX(-50%);
  cursor: ns-resize;
}
.designer-element.selected .resize-handle.ml {
  left: -3px;
  top: 50%;
  transform: translateY(-50%);
  cursor: ew-resize;
}
.designer-element.selected .resize-handle.mr {
  right: -3px;
  top: 50%;
  transform: translateY(-50%);
  cursor: ew-resize;
}

/* ═══════════════════════════════
   SNAP GUIDE LINES
   ═══════════════════════════════ */

.snap-guide {
  position: absolute;
  pointer-events: none;
  z-index: 9998;
}

.snap-guide-v {
  width: calc(1px / var(--zoom, 1));
  background: linear-gradient(
    to bottom,
    transparent 0%,
    #f43f5e 15%,
    #f43f5e 85%,
    transparent 100%
  );
  opacity: 0.75;
}

.snap-guide-h {
  height: calc(1px / var(--zoom, 1));
  background: linear-gradient(
    to right,
    transparent 0%,
    #f43f5e 15%,
    #f43f5e 85%,
    transparent 100%
  );
  opacity: 0.75;
}