/* =============================================================================
   WADIFA BUILDER - PREVIEW PANE STYLESHEET v3.0
   A4 paper canvas, zoom engine, toolbar, pagination guides
============================================================================= */

/* ─────────────────────────────────────────────
   PREVIEW TOOLBAR
───────────────────────────────────────────── */
.preview-toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--surface-card);
  border-bottom: 1px solid var(--surface-border);
  min-height: 48px;
  flex-wrap: wrap;
}

.preview-toolbar-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-inline-end: var(--space-2);
}

.preview-zoom-group {
  display: flex;
  align-items: center;
  gap: 3px;
  background: var(--surface-muted);
  border-radius: var(--radius-md);
  padding: 2px;
}
.pz-btn {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.pz-btn:hover { background: var(--surface-border); color: var(--text-primary); }
.pz-btn.active { background: var(--surface-card); color: var(--brand-500); box-shadow: var(--shadow-xs); }

.pz-value {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  min-width: 40px;
  text-align: center;
  user-select: none;
}

/* Toolbar right actions */
.preview-toolbar-actions { margin-inline-start: auto; display: flex; gap: var(--space-2); }

.preview-page-info {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ─────────────────────────────────────────────
   PREVIEW CANVAS AREA
───────────────────────────────────────────── */
.preview-canvas-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: calc(100% - 48px);
  padding: var(--space-8) var(--space-4);
  gap: var(--space-6);
  background: var(--surface-bg);
}

/* A4 Paper */
.a4-paper {
  --doc-accent:       #2563eb;
  --doc-font-family:  'Outfit', 'Inter', sans-serif;
  --doc-font-size:    10pt;
  --doc-line-height:  1.6;

  width: 210mm;
  min-height: 297mm;
  background: #ffffff;
  box-shadow: 0 4px 40px rgba(0,0,0,.18), 0 1px 8px rgba(0,0,0,.1);
  position: relative;
  overflow: hidden;
  transform-origin: top center;
  transition: transform var(--transition-mid);
  border-radius: 3px;
}

/* Zoom levels */
.preview-canvas-wrap[data-zoom="50"]  .a4-paper { transform: scale(0.5); margin-bottom: calc(-297mm * 0.5 + 0.5 * -2px); }
.preview-canvas-wrap[data-zoom="75"]  .a4-paper { transform: scale(0.75); margin-bottom: calc(-297mm * 0.25); }
.preview-canvas-wrap[data-zoom="100"] .a4-paper { transform: scale(1); }
.preview-canvas-wrap[data-zoom="125"] .a4-paper { transform: scale(1.25); margin-bottom: calc(297mm * 0.25); }
.preview-canvas-wrap[data-zoom="fit"] .a4-paper { transform: scale(var(--fit-scale, 0.65)); }

/* Page break guides */
.page-break-guide {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: repeating-linear-gradient(90deg, #e2e8f0 0, #e2e8f0 6px, transparent 6px, transparent 12px);
  pointer-events: none;
  z-index: 5;
}
.page-break-guide::before {
  content: 'p. ' attr(data-page);
  position: absolute;
  right: 8px;
  top: -10px;
  font-size: 9px;
  color: #94a3b8;
  font-family: var(--font-ui);
  background: #fff;
  padding: 0 4px;
}
[dir="rtl"] .page-break-guide::before { right: auto; left: 8px; }

/* Loading state */
.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  height: 100%;
  min-height: 400px;
  color: var(--text-muted);
}
.preview-placeholder svg { opacity: 0.3; }
.preview-placeholder p { font-size: 14px; }

/* ─────────────────────────────────────────────
   ADS BETWEEN PAGES
───────────────────────────────────────────── */
.preview-ad-slot {
  width: 100%;
  max-width: 728px;
  min-height: 90px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
}