/* A4 designer canvas — screen only. Print styles arrive in Phase 4. */

.a4-canvas-container {
  flex: 1;
  overflow: auto;
  background: var(--desk);
  padding: var(--space-6);
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.a4-page {
  position: relative;
  background: #fff;
  color: #000;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
  flex: none;
}

.a4-page.crosshair {
  cursor: crosshair;
}

/* Margin and page-centre overlay — purely visual, never intercepts the mouse */
.a4-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.a4-margin-line {
  position: absolute;
  border: 0 dashed #59a2e0;
}

.a4-margin-line.vertical {
  top: 0;
  bottom: 0;
  border-left-width: 1px;
}

.a4-margin-line.horizontal {
  left: 0;
  right: 0;
  border-top-width: 1px;
}

.a4-center-line {
  position: absolute;
  border: 0 dashed #e08db5;
}

.a4-center-line.vertical {
  top: 0;
  bottom: 0;
  border-left-width: 1px;
}

.a4-center-line.horizontal {
  left: 0;
  right: 0;
  border-top-width: 1px;
}

/* Smart alignment guides — shown only while dragging.
   A magenta accent, as Figma and PowerPoint use: it reads as UI chrome rather
   than as page content, which matters on a page that is otherwise black on
   white. Stays 1px at every zoom for the same reason — a guide marks a
   position, it does not have a width on the paper. */
.a4-guide-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}

.a4-guide {
  position: absolute;
  background: #ff00c8;
}

.a4-guide--v {
  top: 0;
  bottom: 0;
  width: 1px;
}

.a4-guide--h {
  left: 0;
  right: 0;
  height: 1px;
}

/* Centre alignments get a distinct cyan so "centres match" is readable at a
   glance from "edges match" — the two look identical otherwise. */
.a4-guide--element-center,
.a4-guide--page-center {
  background: #00b8d4;
}

/* Rubber-band selection rectangle */
.a4-selection-rectangle {
  position: absolute;
  border: 1px dashed var(--accent);
  background: var(--accent-soft);
  pointer-events: none;
  z-index: 15;
}

/* Preview mode — the pages layout() produced, stacked with a visible break.
   Same array the print path consumes, which is what makes "preview page count
   equals printed page count" structural rather than coincidental. */
.a4-preview-pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.a4-preview-page-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.a4-preview-page-break {
  width: 100%;
  padding: var(--space-1-5) 0 var(--space-4);
  text-align: center;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  color: var(--desk-text);
  border-top: 1px dashed color-mix(in srgb, var(--desk-text) 40%, transparent);
  margin-top: var(--space-4);
}

.a4-preview-el {
  position: absolute;
  box-sizing: border-box;
  overflow: hidden;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.2;
}