/* REQ-017 exam record PDF / preview (traditional exam paper + red grading marks) */
/* Fonts: load via <link href="/vendor/fonts/exam-pdf-fonts.css"> (REQ-020, parallel, no @import) */

.exam-pdf-body {
  --exam-pdf-mark-color: #e60000;
  --exam-pdf-answer-ink: #2563eb;
  --exam-pdf-text: #1a1a1a;
  --exam-pdf-muted: #525252;
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
  color: var(--exam-pdf-text);
  background: #fff;
  margin: 0;
  line-height: 1.6;
}

.exam-pdf-font-small {
  font-size: 12px;
}

.exam-pdf-font-medium {
  font-size: 14px;
}

.exam-pdf-font-large {
  font-size: 16px;
}

.exam-pdf-watermark {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 700;
  color: rgba(0, 0, 0, 0.06);
  transform: rotate(-24deg);
  pointer-events: none;
  z-index: 0;
  user-select: none;
}

.exam-pdf-sheet {
  position: relative;
  z-index: 1;
  max-width: 210mm;
  margin: 0 auto;
  padding: 0 14mm 0 8mm;
  box-sizing: border-box;
  overflow: visible;
}

.exam-pdf-header {
  position: relative;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  padding-right: 5rem;
  min-height: 4.5rem;
  border-bottom: 2px solid #1a1a1a;
  overflow: visible;
}

.exam-pdf-header-center {
  text-align: center;
}

/* 右上角：红笔总分（略向左内缩，避免旋转后贴边被裁切） */
.exam-pdf-header-aside {
  position: absolute;
  top: 0;
  right: 6mm;
  z-index: 2;
  display: flex;
  justify-content: flex-end;
  pointer-events: none;
  user-select: none;
}

.exam-pdf-score-stamp {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  color: #e60000;
  font-size: 3.5rem;
  transform: rotate(-9deg);
  transform-origin: center top;
  line-height: 1;
  text-align: center;
}

.exam-pdf-score-stamp-value {
  display: block;
  color: #e60000;
  font-family: 'Ma Shan Zheng', 'STKaiti', 'KaiTi', '楷体', cursive;
  font-size: 1em;
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 0.95;
  text-align: center;
}

/* 红笔双曲线下划线：宽度随分数居中（html2canvas 可正确导出） */
.exam-pdf-score-stamp-lines {
  display: block;
  position: relative;
  width: 1.12em;
  min-width: 100%;
  max-width: 4.5rem;
  height: 1rem;
  margin: 0.1rem auto 0;
}

.exam-pdf-score-line {
  position: absolute;
  left: 50%;
  height: 0;
  border-bottom: 2.5px solid #e60000;
  border-radius: 50%;
}

.exam-pdf-score-line--upper {
  bottom: 0.5rem;
  width: 100%;
  transform: translateX(-50%) rotate(-5deg);
}

.exam-pdf-score-line--lower {
  bottom: 0;
  width: 88%;
  border-bottom-width: 2px;
  transform: translateX(-50%) rotate(-2deg);
}

.exam-pdf-header-text {
  font-size: 0.85em;
  color: var(--exam-pdf-muted);
  margin-bottom: 0.35rem;
}

.exam-pdf-title {
  font-size: 1.35em;
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: 0.05em;
}

.exam-pdf-examinee-line {
  font-size: 1.05em;
  font-weight: 600;
  margin: 0 0 0.65rem;
  text-align: center;
}

.exam-pdf-meta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 0.75rem 2rem;
  font-size: 0.95em;
  margin-bottom: 1rem;
}

.exam-pdf-meta-duration {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.exam-pdf-section-title {
  font-size: 1.05em;
  font-weight: 700;
  margin: 1.25rem 0 0.75rem;
  padding-left: 0.25rem;
  border-left: 4px solid #1a1a1a;
}

.exam-pdf-question {
  margin-bottom: 1.1rem;
  break-inside: avoid;
  page-break-inside: avoid;
}

.exam-pdf-question-head {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.exam-pdf-q-no {
  margin-right: 0.25rem;
}

.exam-pdf-q-meta {
  color: var(--exam-pdf-muted);
  font-weight: 400;
  font-size: 0.92em;
}

.exam-pdf-passage {
  background: #f8f8f8;
  border: 1px solid #e5e5e5;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.5rem;
  font-size: 0.95em;
  white-space: pre-wrap;
}

.exam-pdf-stem {
  margin: 0 0 0.5rem;
  white-space: pre-wrap;
}

.exam-pdf-answer-block {
  margin: 0.4rem 0 0.35rem 0.75rem;
}

.exam-pdf-answer-label {
  font-size: 0.88em;
  color: var(--exam-pdf-muted);
  margin-bottom: 0.2rem;
}

.exam-pdf-answer-text {
  white-space: pre-wrap;
  word-break: break-word;
}

.exam-pdf-answer-text--examinee {
  color: #2563eb;
  font-family: 'Ma Shan Zheng', 'KaiTi', '楷体', cursive;
  font-size: 1.08em;
  line-height: 1.5;
}

.exam-pdf-code {
  font-family: 'Noto Sans Mono', 'Source Code Pro', 'Consolas', monospace;
  font-size: 0.92em;
  background: #f5f5f5;
  border: 1px solid #e0e0e0;
  padding: 0.5rem 0.65rem;
}

.exam-pdf-options {
  list-style: none;
  margin: 0;
  padding: 0;
}

.exam-pdf-option {
  margin: 0.2rem 0;
  padding: 0.15rem 0.35rem;
}

.exam-pdf-option--selected {
  border: 2px solid #1a1a1a;
  font-weight: 600;
  background: #fafafa;
}

.exam-pdf-option-id {
  font-weight: 600;
  margin-right: 0.25rem;
}

.exam-pdf-mark {
  color: #e60000;
  font-family: 'Ma Shan Zheng', 'KaiTi', cursive;
  font-weight: 400;
  font-size: 1.65em;
  margin-left: 0.35rem;
  line-height: 1;
  vertical-align: middle;
}

.exam-pdf-q-score {
  margin-top: 0.35rem;
  font-size: 0.92em;
}

.exam-pdf-q-score-label {
  color: var(--exam-pdf-muted);
}

.exam-pdf-q-score-value {
  color: #e60000;
  font-weight: 700;
}

.exam-pdf-deduct {
  color: #e60000;
  font-weight: 600;
  margin-left: 0.5rem;
}

.exam-pdf-llm-detail {
  font-family: 'Noto Sans Mono', monospace;
  font-size: 0.85em;
  background: #f9f9f9;
  border: 1px solid #e5e5e5;
  padding: 0.5rem;
  white-space: pre-wrap;
  margin: 0;
}

.exam-pdf-footer-summary {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 2px solid #1a1a1a;
  text-align: center;
}

.exam-pdf-footer-total {
  font-size: 1.1em;
  font-weight: 700;
  color: #e60000;
  margin: 0 0 0.35rem;
}

.exam-pdf-footer-date {
  margin: 0;
  color: var(--exam-pdf-muted);
  font-size: 0.9em;
}

/* Export modal preview shell */
.exam-pdf-preview-wrap {
  background: #e8e8e8;
  border: 1px solid var(--bs-border-color, #dee2e6);
  overflow: auto;
  overflow-x: auto;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  max-height: min(70vh, 640px);
  padding: 1rem;
  width: 100%;
  box-sizing: border-box;
}

.exam-pdf-preview-scaler {
  transform-origin: top center;
  margin-left: auto;
  margin-right: auto;
}

.exam-pdf-preview-wrap .exam-pdf-sheet {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
  /* 与导出一致的内边距，避免预览与 PDF 裁切差异 */
  padding: 0 14mm 0 8mm;
  box-sizing: border-box;
}

#exam-pdf-export-modal .modal-body {
  overflow-x: hidden;
}

@media (max-width: 991.98px) {
  #exam-pdf-export-modal .modal-body {
    padding: 0.75rem;
  }

  #exam-pdf-export-modal .modal-footer {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  #exam-pdf-export-modal .modal-footer .btn {
    flex: 1 1 auto;
    min-width: 6rem;
  }

  .exam-pdf-preview-wrap {
    max-height: min(52vh, 480px);
    min-height: 12rem;
    padding: 0.75rem;
  }

  .exam-pdf-preview-wrap .exam-pdf-header {
    padding-right: 3.25rem;
    min-height: 3.5rem;
  }

  .exam-pdf-preview-wrap .exam-pdf-header-aside {
    right: 0;
  }

  .exam-pdf-preview-wrap .exam-pdf-score-stamp {
    font-size: 2.25rem;
  }

  .exam-pdf-preview-wrap .exam-pdf-title {
    font-size: 1.1em;
    letter-spacing: 0.02em;
  }

  .exam-pdf-preview-wrap .exam-pdf-meta-row {
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.85em;
  }

  .exam-pdf-preview-wrap .exam-pdf-meta-duration {
    white-space: normal;
    text-align: center;
  }

  .exam-pdf-preview-wrap .exam-pdf-stem,
  .exam-pdf-preview-wrap .exam-pdf-answer-text {
    overflow-wrap: anywhere;
    word-break: break-word;
  }
}

@media print {
  .exam-pdf-watermark {
    position: fixed;
  }
}