/* 测验 / 批改 / 扫描 */

.seg5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.seg5 button { font-size: 13px; padding: 0 2px; }

/* ---------- 测验列表 ---------- */

.exam-card {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 13px 14px;
  margin-top: 9px;
  color: inherit;
  font: inherit;
}
.exam-card:active { transform: scale(0.99); }
.exam-card .top { display: flex; align-items: baseline; gap: 8px; }
.exam-card .nm { font-size: 15px; font-weight: 600; letter-spacing: -0.1px; }
.exam-card .dt { margin-left: auto; font-size: 11.5px; color: var(--ink3); font-variant-numeric: tabular-nums; flex: 0 0 auto; }
.exam-card .meta { font-size: 12px; color: var(--ink3); margin-top: 5px; display: flex; gap: 8px; flex-wrap: wrap; }
.exam-card .meta b { font-weight: 600; color: var(--ink2); font-variant-numeric: tabular-nums; }
.exam-card .progress { margin-top: 9px; }

/* ---------- 统计 ---------- */

.stat-hero {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 15px 16px 14px;
  margin-top: 10px;
}
.stat-hero .big { display: flex; align-items: baseline; gap: 7px; }
.stat-hero .big .n { font-size: 30px; font-weight: 600; letter-spacing: -0.8px; font-variant-numeric: tabular-nums; line-height: 1; }
.stat-hero .big .u { font-size: 12.5px; color: var(--ink3); }
.stat-hero .sub { font-size: 12.5px; color: var(--ink3); margin-left: auto; }
.stat-grid { display: flex; gap: 0; margin-top: 13px; border-top: 1px solid var(--line2); padding-top: 12px; }
.stat-grid > div { flex: 1; min-width: 0; text-align: center; border-right: 1px solid var(--line2); }
.stat-grid > div:last-child { border-right: 0; }
.stat-grid .v { font-size: 16px; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.3px; }
.stat-grid .k { font-size: 11px; color: var(--ink3); margin-top: 3px; }

/* ---------- 分段分布 ---------- */

.dist { margin-top: 10px; }
.dist-row { display: flex; align-items: center; gap: 9px; margin-bottom: 7px; }
.dist-row .lb { width: 46px; font-size: 11.5px; color: var(--ink3); flex: 0 0 auto; text-align: right; font-variant-numeric: tabular-nums; }
.dist-row .bar { flex: 1; height: 9px; background: var(--line2); border-radius: 5px; overflow: hidden; }
.dist-row .bar i { display: block; height: 100%; border-radius: 5px; transition: width .25s ease; }
.dist-row .ct { width: 30px; font-size: 11.5px; color: var(--ink2); flex: 0 0 auto; font-variant-numeric: tabular-nums; }

/* ---------- 按题批改 ---------- */

.item-strip { display: flex; gap: 7px; overflow-x: auto; padding: 3px 1px 7px; scrollbar-width: none; }
.item-strip::-webkit-scrollbar { display: none; }
.item-chip {
  flex: 0 0 auto;
  min-width: 46px;
  height: 46px;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink2);
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  padding: 0 8px;
}
.item-chip .sc { font-size: 10px; font-weight: 400; color: var(--ink3); }
.item-chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.item-chip.on .sc { color: rgba(255, 255, 255, 0.75); }
.item-chip .cnt { position: relative; }

.legend { display: flex; gap: 12px; font-size: 11.5px; color: var(--ink3); margin: 2px 0 9px; align-items: center; }
.legend span { display: inline-flex; align-items: center; gap: 4px; }
.legend i { width: 11px; height: 11px; border-radius: 4px; display: inline-block; }

.mark-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(74px, 1fr)); gap: 7px; }
.mark-cell {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  padding: 8px 4px 7px;
  text-align: center;
  color: var(--ink2);
  font: inherit;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: background .12s ease, border-color .12s ease;
}
.mark-cell .nm { display: block; font-size: 13px; line-height: 1.25; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mark-cell .st { display: block; font-size: 11px; color: var(--ink3); font-variant-numeric: tabular-nums; min-height: 14px; line-height: 14px; }
.mark-cell.ok { background: var(--ok-bg); border-color: var(--ok-line); color: var(--ok-ink); }
.mark-cell.ok .st { color: var(--ok-ink2); }
.mark-cell.half { background: var(--half-bg); border-color: var(--half-line); color: var(--half-ink); }
.mark-cell.half .st { color: var(--half-ink2); }
.mark-cell.bad { background: var(--bad-bg); border-color: var(--bad-line); color: var(--bad-ink); }
.mark-cell.bad .st { color: var(--bad-ink2); }
.mark-cell:active { transform: scale(0.97); }

/* ---------- 按学生 ---------- */

.score-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line2);
  background: var(--card);
  width: 100%;
  text-align: left;
  font: inherit;
  color: inherit;
}
.score-row:last-child { border-bottom: 0; }
.score-row .sid { width: 25px; font-size: 11.5px; color: var(--ink3); font-variant-numeric: tabular-nums; flex: 0 0 auto; }
.score-row .nm { flex: 1; min-width: 0; font-size: 14.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.score-row .val { font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; flex: 0 0 auto; letter-spacing: -0.2px; }
.score-row .val.none { color: var(--ink3); font-weight: 400; font-size: 12.5px; }
.score-row .cam { width: 26px; height: 26px; color: var(--ink3); flex: 0 0 auto; display: flex; align-items: center; justify-content: center; }
.score-row .cam.have { color: var(--accent); }
.score-row .cam svg { width: 17px; height: 17px; }
.score-row .lvl { font-size: 10.5px; padding: 1px 5px; border-radius: 5px; flex: 0 0 auto; font-variant-numeric: tabular-nums; }
.score-row .lvl.a { background: var(--ok-bg); color: var(--ok-ink); }
.score-row .lvl.b { background: var(--half-bg); color: var(--ink2); }
.score-row .lvl.c { background: var(--bad-bg); color: var(--bad-ink); }

/* ---------- 打分弹层 ---------- */

.score-input {
  width: 100%;
  height: 62px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--card);
  font-size: 30px;
  font-weight: 600;
  text-align: center;
  letter-spacing: -0.5px;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  padding: 0 12px;
}
.score-input:focus { outline: none; border-color: var(--accent); }
.score-unit { display: flex; align-items: baseline; justify-content: center; gap: 5px; margin-top: 8px; font-size: 12px; color: var(--ink3); }

.mark-dots { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.mark-dot {
  flex: 0 0 auto;
  min-width: 44px;
  height: 40px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--card);
  font-size: 12px;
  color: var(--ink2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  padding: 0 6px;
  font-variant-numeric: tabular-nums;
}
.mark-dot .no { font-size: 12px; font-weight: 600; }
.mark-dot .mk { font-size: 10px; color: var(--ink3); height: 12px; }
.mark-dot.ok { background: var(--ok-bg); border-color: var(--ok-line); }
.mark-dot.ok .mk { color: var(--ok-ink2); }
.mark-dot.half { background: var(--half-bg); border-color: var(--half-line); }
.mark-dot.half .mk { color: var(--half-ink2); }
.mark-dot.bad { background: var(--bad-bg); border-color: var(--bad-line); }
.mark-dot.bad .mk { color: var(--bad-ink2); }

/* ---------- 试卷照片 ---------- */

.shots { display: flex; gap: 8px; overflow-x: auto; padding: 2px 1px 6px; scrollbar-width: none; }
.shots::-webkit-scrollbar { display: none; }
.shot-thumb {
  flex: 0 0 auto;
  width: 74px;
  height: 96px;
  border-radius: 9px;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--line2);
  padding: 0;
}
.shot-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.shot-full { width: 100%; border-radius: 12px; display: block; background: var(--line2); }

.empty-mini { text-align: center; padding: 22px 14px; color: var(--ink3); font-size: 12.5px; line-height: 1.7; }

/* ---------- 趋势 ---------- */

.trend { display: flex; align-items: flex-end; gap: 5px; height: 74px; padding: 8px 2px 0; }
.trend .col { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; gap: 4px; }
.trend .col i { width: 100%; max-width: 22px; border-radius: 5px 5px 3px 3px; background: var(--sky); opacity: 1; min-height: 3px; }
.trend .col b { font-size: 10px; font-weight: 600; color: var(--ink2); font-variant-numeric: tabular-nums; }

/* ---------- 答题卡 ---------- */

.key-grid { padding: 6px 10px; }
.key-row { display: flex; align-items: center; gap: 6px; padding: 5px 0; border-bottom: 1px solid var(--line2); }
.key-row:last-child { border-bottom: 0; }
.key-row .kno { width: 26px; flex: 0 0 auto; font-size: 12px; color: var(--ink3); font-variant-numeric: tabular-nums; text-align: right; }
.key-opt {
  flex: 1 1 0; min-width: 0; height: 30px; border-radius: 7px;
  border: 1px solid var(--line); background: var(--card);
  font: inherit; font-size: 12.5px; color: var(--ink2);
}
.key-opt.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.key-opt.none { flex: 0 0 38px; }
.key-opt.none.on { background: var(--ink3); border-color: var(--ink3); }

.ans-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.ans-cell {
  position: relative;
  min-width: 36px; height: 30px; padding: 0 5px;
  display: inline-flex; align-items: baseline; justify-content: center;
  border-radius: 7px; border: 1px solid var(--line);
  font-size: 13px; font-weight: 500; color: var(--ink2);
}
.ans-cell i { position: absolute; top: -7px; left: -3px; font-size: 9px; font-style: normal; color: var(--ink3); background: var(--card); padding: 0 2px; line-height: 1; }
.ans-cell em { font-style: normal; font-size: 9.5px; color: var(--ink3); margin-left: 2px; }
.ans-cell.ok { background: var(--ok-bg); border-color: var(--ok-line); color: var(--ok-ink); }
.ans-cell.bad { background: var(--bad-bg); border-color: var(--bad-line); color: var(--bad-ink); }
.ans-cell.skip { opacity: .55; }

.res-sum { font-size: 13.5px; margin-top: 12px; color: var(--ink2); }
.res-sum b { font-size: 22px; color: var(--ink); font-variant-numeric: tabular-nums; margin-right: 2px; }
.res-who { font-size: 15px; font-weight: 600; margin-bottom: 2px; }

/* ---------- 雷达图 ---------- */

.radar-legend { display: flex; justify-content: center; gap: 16px; font-size: 11.5px; color: var(--ink3); padding: 4px 0 6px; }
.radar-legend i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 5px; vertical-align: 0; }
.radar-pick {
  margin-left: auto; height: 30px; padding: 0 8px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card);
  font-size: 12.5px; color: var(--ink2); max-width: 120px;
}

/* 未设置时「空」不要那么抢眼 */
.key-opt.none.on { background: var(--line2); border-color: var(--line); color: var(--ink2); }