/* Preview modal + 50.html iframe */

.wht50-sample-frame {
  display: block;
  width: 100%;
  border: 0;
  background: #fff;
}

.wht50-sample-frame--preview {
  /* ความสูงจริงตั้งจาก JS ตามเนื้อหาเอกสาร — กันเลื่อนไม่ถึงท้าย */
  height: 1200px;
  min-height: 297mm;
}

.wht50-preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(15, 23, 42, 0.55);
}

.wht50-preview-modal {
  display: flex;
  flex-direction: column;
  width: min(920px, 100%);
  max-height: min(94vh, 1040px);
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(15, 31, 77, 0.22);
}

.wht50-preview-modal--sample {
  width: min(900px, 100%);
}

.wht50-preview-modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid #e2e8f0;
  flex-shrink: 0;
}

.wht50-preview-modal__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.wht50-preview-modal__meta {
  margin: 4px 0 0;
  font-size: 0.85rem;
  color: #64748b;
}

.wht50-preview-modal__close {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 12px;
  background: #f1f5f9;
  color: #64748b;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}

.wht50-preview-modal__body {
  overflow: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding: 12px;
  background: #e8edf5;
}

.wht50-preview-modal__body--sample {
  padding: 0;
  background: #e8edf5;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.wht50-preview-modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 20px;
  border-top: 1px solid #e2e8f0;
  background: #f8fafc;
}

.wht50-preview-modal__footer .btn-primary,
.wht50-preview-modal__footer .btn-secondary {
  min-height: 42px;
  padding: 10px 18px;
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
}

.wht50-preview-modal__footer .btn-secondary {
  background: #fff;
  border: 1px solid #cbd5e1;
  color: #334155;
}

.wht50-preview-modal__footer .btn-primary {
  background: #1d4ed8;
  border: 1px solid #1d4ed8;
  color: #fff;
}

@media print {
  .wht50-preview-overlay { display: none !important; }
}