/* ============================================================
   子页面专用样式：toolbox / invigilate / report
   ============================================================ */

/* ================= Toolbox 装机必备 ================= */
.tb-layout {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 40px;
  align-items: start;
}
.tb-side {
  position: sticky;
  top: 92px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px 14px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}
.tb-side .side-title {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-faint);
  letter-spacing: 2px;
  margin: 4px 8px 12px;
}
.tb-side a {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  padding: 7px 10px;
  border-radius: 7px;
  transition: all .18s;
  border: 1px solid transparent;
}
.tb-side a:hover {
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.08);
  border-color: var(--line);
}
.tb-search-wrap { position: relative; margin-bottom: 26px; }
.tb-search {
  width: 100%;
  max-width: 460px;
  background: rgba(10, 17, 32, 0.9);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  font-size: 14.5px;
  font-family: var(--sans);
  padding: 13px 16px 13px 44px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.tb-search:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
}
.tb-search-wrap svg {
  position: absolute;
  left: 14px; top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 18px;
  color: var(--text-faint);
}
#toolbox-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 1px;
}
.tb-cat { margin-bottom: 46px; }
.tb-cat h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  color: #fff;
  font-size: 21px;
  letter-spacing: 1px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.tb-cat .cat-idx {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cyan);
  opacity: 0.8;
}
.tb-cat .cat-count {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-faint);
  margin-left: auto;
  letter-spacing: 1px;
}
.dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.dl-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text);
  font-size: 14px;
  transition: all .2s;
  overflow: hidden;
}
.dl-item svg { width: 15px; height: 15px; flex: none; color: var(--text-faint); transition: color .2s; }
.dl-item span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.dl-item:hover {
  border-color: var(--line-strong);
  background: rgba(34, 211, 238, 0.07);
  color: var(--cyan);
  transform: translateY(-2px);
}
.dl-item:hover svg { color: var(--lime); }
.tb-empty { font-family: var(--mono); color: var(--text-faint); padding: 40px 0; }

/* ================= Invigilate 监考软件 ================= */
.inv-coop {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--lime);
  border: 1px solid rgba(163, 230, 53, 0.35);
  background: rgba(163, 230, 53, 0.07);
  padding: 7px 16px;
  border-radius: 999px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.inv-doc {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 44px;
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 56px;
}
.inv-nav {
  position: sticky;
  top: 92px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px 12px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}
.inv-nav .inv-search {
  width: 100%;
  background: rgba(10, 17, 32, 0.9);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-size: 13.5px;
  padding: 9px 12px;
  outline: none;
  margin-bottom: 14px;
  font-family: var(--sans);
}
.inv-nav .inv-search:focus { border-color: var(--line-strong); }
.inv-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  padding: 9px 10px;
  cursor: pointer;
  border-radius: 8px;
  user-select: none;
  letter-spacing: 1px;
}
.inv-group-title:hover { background: rgba(34, 211, 238, 0.07); }
.inv-group-title .arrow { font-size: 10px; color: var(--cyan); transition: transform .2s; }
.inv-group-items { list-style: none; margin-bottom: 10px; }
.inv-group-items.collapsed { display: none; }
.inv-group-items a {
  display: block;
  font-size: 13.5px;
  color: var(--text-dim);
  padding: 7px 10px 7px 26px;
  border-radius: 7px;
  border-left: 2px solid transparent;
  transition: all .18s;
}
.inv-group-items a:hover { color: var(--cyan); background: rgba(34, 211, 238, 0.06); }
.inv-group-items a.active {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
}
.inv-page { display: none; }
.inv-page.active { display: block; animation: fadeUp .4s ease; }
.inv-page h2 {
  color: #fff;
  font-size: 24px;
  letter-spacing: 1px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.inv-page h2::before { content: "# "; color: var(--cyan); font-family: var(--mono); font-size: 18px; }
.inv-page p { color: var(--text-dim); font-size: 15px; margin-bottom: 12px; }
.inv-page p strong { color: var(--text); }
.inv-page ol, .inv-page ul { margin: 0 0 14px 22px; color: var(--text-dim); font-size: 15px; }
.inv-page li { margin-bottom: 6px; }
.inv-tip {
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 14px 0;
  color: var(--text);
  font-size: 14px;
}
.inv-tip.warn { border-left-color: var(--warn); background: rgba(251, 191, 36, 0.06); }

/* ================= Report 举报作弊 ================= */
.report-field {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 0;
  overflow: hidden;
}
.report-field legend {
  font-size: 20px;
  color: #fff;
  letter-spacing: 2px;
  padding: 24px 34px;
  background: rgba(34, 211, 238, 0.05);
  border-bottom: 1px solid var(--line);
  width: 100%;
}
.report-field .inner { padding: 30px 34px 36px; }
.report-field .sec-title {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 2px;
  margin: 26px 0 10px;
}
.report-field .sec-title::before { content: "// "; color: var(--text-faint); }
.report-field .inner > .sec-title:first-child { margin-top: 0; }
.report-field p.txt { color: var(--text-dim); font-size: 15px; margin-bottom: 8px; padding-left: 14px; border-left: 2px solid var(--line); }
.report-field .email-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  margin: 14px 0 6px;
}
.report-field .email-line .mail {
  font-family: var(--mono);
  color: var(--lime);
  background: rgba(163, 230, 53, 0.08);
  border: 1px dashed rgba(163, 230, 53, 0.4);
  padding: 6px 14px;
  border-radius: 8px;
  letter-spacing: 0.5px;
}
.report-notes { margin-top: 26px; }
.report-notes p { color: var(--text-dim); font-size: 14px; margin-bottom: 8px; }
.report-notes p::before { content: "* "; color: var(--warn); }

@media (max-width: 980px) {
  .tb-layout { grid-template-columns: 1fr; }
  .tb-side { position: static; max-height: none; display: flex; flex-wrap: wrap; gap: 4px; }
  .tb-side .side-title { width: 100%; }
  .inv-doc { grid-template-columns: 1fr; }
  .inv-nav { position: static; max-height: none; }
  .report-field legend { padding: 20px 22px; }
  .report-field .inner { padding: 24px 22px 28px; }
}