/* THẦY HÍU DẠY LÝ — V6.2
   Hai chế độ nhập đề: PDF nguyên bản + phiếu đáp án thủ công / đọc file theo mẫu. */

.import-mode-switch{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin-bottom:18px;
}
.import-mode-card{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px;
  border:1px solid var(--line);
  border-radius:16px;
  background:#fff;
  cursor:pointer;
  transition:.18s ease;
  min-width:0;
}
.import-mode-card:hover{border-color:#99b8aa;background:#f9fcfa}
.import-mode-card.active{
  border-color:#1d6b4f;
  background:linear-gradient(135deg,#eef8f3,#fbf8eb);
  box-shadow:0 0 0 3px rgba(29,107,79,.10);
}
.import-mode-card input{flex:0 0 auto;margin-top:3px}
.import-mode-card strong{display:block;color:var(--forest-900);font-size:13px}
.import-mode-card span{display:block;margin-top:4px;color:var(--muted);font-size:10px;line-height:1.5}
.import-mode-badge{
  display:inline-flex!important;
  width:max-content;
  margin-top:7px!important;
  padding:3px 7px;
  border-radius:999px;
  background:#dbeee4;
  color:#145c43!important;
  font-weight:800;
  letter-spacing:.2px;
}
.manual-pdf-warning{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:13px 14px;
  border:1px solid #f0cf78;
  border-radius:13px;
  background:#fff9e8;
  color:#765714;
  font-size:11px;
  line-height:1.55;
}
.manual-pdf-warning b{color:#5b4009}
.answer-builder{
  display:grid;
  gap:15px;
  margin-top:16px;
}
.answer-section{
  border:1px solid var(--line);
  border-radius:16px;
  background:#fff;
  overflow:hidden;
}
.answer-section-head{
  display:flex;
  justify-content:space-between;
  gap:12px;
  align-items:center;
  padding:13px 15px;
  border-bottom:1px solid var(--line);
  background:#f7faf8;
}
.answer-section-head h4{margin:0;color:var(--forest-900);font-size:13px}
.answer-section-head span{color:var(--muted);font-size:9px}
.answer-grid{
  display:grid;
  gap:9px;
  padding:14px;
}
.answer-grid.mcq{grid-template-columns:repeat(6,minmax(72px,1fr))}
.answer-grid.tf{grid-template-columns:repeat(2,minmax(0,1fr))}
.answer-grid.short{grid-template-columns:repeat(2,minmax(0,1fr))}
.answer-cell{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:7px;
  align-items:center;
  padding:8px 9px;
  border:1px solid var(--line);
  border-radius:11px;
  background:#fbfcfb;
  min-width:0;
}
.answer-cell>span{font-size:10px;font-weight:800;color:#355649;white-space:nowrap}
.answer-cell select,.answer-cell input{width:100%;min-width:0;padding:7px 8px;border-radius:8px}
.tf-key-card{
  padding:11px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fbfcfb;
}
.tf-key-card>strong{display:block;margin-bottom:8px;font-size:11px;color:#355649}
.tf-key-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px}
.tf-key-row label{display:grid;grid-template-columns:auto 1fr;gap:5px;align-items:center;font-size:9px;color:var(--muted)}
.tf-key-row select{width:100%;padding:7px 4px;border-radius:8px}
.short-key-row{
  display:grid;
  grid-template-columns:52px minmax(0,1fr) minmax(0,1fr);
  gap:8px;
  align-items:center;
  padding:9px;
  border:1px solid var(--line);
  border-radius:11px;
  background:#fbfcfb;
}
.short-key-row strong{font-size:10px;color:#355649}
.short-key-row input{width:100%;min-width:0}
.import-mode-panel[hidden]{display:none!important}
.template-import-note{margin-bottom:12px}

/* Phiếu trả lời PDF gọn, không lặp lại toàn bộ nội dung câu hỏi. */
.pdf-answer-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:18px;
  margin-top:18px;
}
.pdf-answer-paper{display:grid;gap:16px;min-width:0}
.pdf-answer-section{
  border:1px solid var(--line);
  border-radius:17px;
  background:#fff;
  overflow:hidden;
}
.pdf-answer-section>header{
  padding:14px 16px;
  background:#0c3e30;
  color:#fff;
}
.pdf-answer-section>header strong{display:block;font-size:13px}
.pdf-answer-section>header span{font-size:9px;color:#cde0d8}
.pdf-mcq-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:9px;
  padding:14px;
}
.pdf-answer-row{
  scroll-margin-top:180px;
  padding:10px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fbfcfb;
}
.pdf-answer-row.done{border-color:#75bd9e;background:#f0faf5}
.pdf-answer-row .answer-no{display:block;margin-bottom:7px;color:#155c43;font-size:10px;font-weight:800}
.pdf-choice-line{display:grid;grid-template-columns:repeat(4,1fr);gap:5px}
.pdf-choice-line label{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:4px;
  min-height:34px;
  border:1px solid var(--line);
  border-radius:8px;
  background:#fff;
  font-size:10px;
  cursor:pointer;
}
.pdf-choice-line label:has(input:checked){border-color:#1d6b4f;background:#eaf6f0;color:#145c43;font-weight:800}
.pdf-tf-list,.pdf-short-list,.pdf-group-list,.pdf-match-list{display:grid;gap:9px;padding:14px}
.pdf-tf-row{
  display:grid;
  grid-template-columns:62px repeat(4,minmax(0,1fr));
  gap:7px;
  align-items:stretch;
  scroll-margin-top:180px;
  padding:9px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fbfcfb;
}
.pdf-tf-row.done{border-color:#75bd9e;background:#f0faf5}
.pdf-tf-row>strong{align-self:center;font-size:10px;color:#155c43}
.pdf-tf-item{display:grid;grid-template-columns:18px 1fr 1fr;gap:5px;align-items:center}
.pdf-tf-item>span{font-size:9px;font-weight:800;color:#4f665c}
.pdf-tf-item label{display:flex;align-items:center;justify-content:center;gap:3px;padding:6px 3px;border:1px solid var(--line);border-radius:7px;background:#fff;font-size:8px;cursor:pointer}
.pdf-tf-item label:has(input:checked){border-color:#1d6b4f;background:#eaf6f0;color:#145c43;font-weight:800}
.pdf-short-row{
  display:grid;
  grid-template-columns:65px minmax(0,300px);
  gap:10px;
  align-items:center;
  scroll-margin-top:180px;
  padding:10px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fbfcfb;
}
.pdf-short-row.done{border-color:#75bd9e;background:#f0faf5}
.pdf-short-row strong{font-size:10px;color:#155c43}
.pdf-group-card,.pdf-match-card{
  scroll-margin-top:180px;
  padding:11px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fbfcfb;
}
.pdf-group-card.done,.pdf-match-card.done{border-color:#75bd9e;background:#f0faf5}
.pdf-group-card>strong,.pdf-match-card>strong{display:block;margin-bottom:9px;font-size:10px;color:#155c43}
.pdf-group-sub{display:grid;grid-template-columns:72px minmax(0,1fr);gap:8px;align-items:center;margin-top:7px}
.pdf-group-sub>span{font-size:9px;color:#4f665c;font-weight:700}
.pdf-match-sub{display:grid;grid-template-columns:90px minmax(0,160px);gap:8px;align-items:center;margin-top:7px}
.pdf-match-sub span{font-size:9px;color:#4f665c;font-weight:700}
.result-pdf-link{margin:13px 0 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}

@media(max-width:1100px){
  .answer-grid.mcq{grid-template-columns:repeat(4,minmax(72px,1fr))}
  .pdf-answer-layout{grid-template-columns:1fr}
  .pdf-answer-layout .navigator{position:static;order:-1}
}
@media(max-width:760px){
  .import-mode-switch{grid-template-columns:1fr}
  .answer-grid.mcq{grid-template-columns:repeat(3,minmax(68px,1fr))}
  .answer-grid.tf,.answer-grid.short{grid-template-columns:1fr}
  .pdf-mcq-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pdf-tf-row{grid-template-columns:1fr 1fr}
  .pdf-tf-row>strong{grid-column:1/-1}
  .pdf-tf-item{grid-template-columns:20px 1fr 1fr}
}
@media(max-width:480px){
  .answer-grid.mcq{grid-template-columns:repeat(2,minmax(64px,1fr))}
  .tf-key-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .short-key-row{grid-template-columns:1fr}
  .pdf-mcq-grid{grid-template-columns:1fr}
  .pdf-short-row,.pdf-group-sub,.pdf-match-sub{grid-template-columns:1fr}
  .result-pdf-link{align-items:flex-start;flex-direction:column}
}