/* ============================================================
   随机测试弹框样式（V38）
   ============================================================ */
.quiz-overlay {
  position: fixed; inset: 0; z-index: 3000;
  background: rgba(10, 25, 45, .55);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.quiz-overlay[hidden] { display: none !important; }
.quiz-modal {
  background: #fff; border-radius: 18px;
  width: min(880px, 100%); max-height: 92vh;
  display: flex; flex-direction: column; overflow: hidden;
  box-shadow: 0 30px 80px rgba(5, 20, 45, .35);
  animation: quizIn .35s cubic-bezier(.22,.61,.36,1);
}
@keyframes quizIn {
  from { opacity: 0; transform: translateY(26px) scale(.98); }
  to { opacity: 1; transform: none; }
}
.quiz-head {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 24px; border-bottom: 1px solid #edf1f7;
}
.quiz-head-title { margin-right: auto; }
.quiz-head-title h3 { margin: 0 0 2px; font-size: 18px; color: var(--dark); }
.quiz-head-title .meta { margin: 0; }
.quiz-timer {
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  font-size: 24px; font-weight: 800; color: #1b7fc4;
  background: #eaf5fe; border-radius: 12px; padding: 6px 16px;
  font-variant-numeric: tabular-nums; letter-spacing: 1px;
}
.quiz-timer.warning { color: #d33; background: #fdecec; animation: timerPulse 1s infinite; }
@keyframes timerPulse { 50% { transform: scale(1.05); } }
.quiz-close {
  border: none; background: #f1f4f9; color: #666; cursor: pointer;
  width: 36px; height: 36px; border-radius: 50%; font-size: 15px;
  transition: background .2s, transform .2s;
}
.quiz-close:hover { background: #e2e9f2; transform: rotate(90deg); }
.quiz-progress { height: 4px; background: #edf1f7; }
.quiz-progress-bar {
  height: 100%; width: 0;
  background: linear-gradient(90deg, #1b7fc4, #2ea3f2, #7cc7ff);
  transition: width .3s ease;
}
.quiz-body { overflow-y: auto; padding: 24px 28px; flex: 1; }
.quiz-q {
  border: 1.5px solid #e8edf4; border-radius: 14px;
  padding: 18px 20px; margin-bottom: 16px;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.quiz-q.answered { border-color: #bfe0f8; background: #fbfdff; }
.quiz-q.unanswered {
  border-color: #e5484d; background: #fff7f7;
  box-shadow: 0 0 0 3px rgba(229,72,77,.14);
}
.quiz-q .q-stem { font-size: 16px; font-weight: 600; color: var(--dark); margin: 0 0 12px; }
.quiz-q .q-stem .qno {
  display: inline-block; min-width: 28px; text-align: center;
  background: linear-gradient(135deg, #1b6ca8, #2ea3f2); color: #fff;
  border-radius: 8px; font-size: 13px; padding: 1px 7px; margin-right: 8px;
}
.quiz-q img { max-width: 100%; border-radius: 8px; margin: 4px 0 12px; border: 1px solid #eef2f7; }
.quiz-code {
  background: #1e2a38; color: #d6e4f0; padding: 14px 18px; border-radius: 10px;
  font-size: 14px; line-height: 1.8; overflow-x: auto; margin: 2px 0 12px;
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
}
.quiz-opts { display: grid; gap: 8px; }
.quiz-opt {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 10px; cursor: pointer;
  border: 1px solid transparent; transition: background .18s, border-color .18s;
  font-size: 15px;
}
.quiz-opt:hover { background: #f2f8fe; border-color: #d3e9fb; }
.quiz-opt input { accent-color: #2ea3f2; width: 17px; height: 17px; cursor: pointer; flex-shrink: 0; }
.quiz-opt .okey {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 50%;
  background: #e3f1fd; color: #1b7fc4; font-weight: 700; font-size: 13px; flex-shrink: 0;
}
.quiz-opt.picked { background: #eaf5fe; border-color: #2ea3f2; }
.quiz-foot {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-top: 1px solid #edf1f7; background: #fbfcfe;
}
.quiz-foot[hidden] { display: none !important; }

/* ---------- 成绩页 ---------- */
.quiz-result { overflow-y: auto; padding: 32px 28px; flex: 1; text-align: center; }
.quiz-result[hidden] { display: none !important; }
.quiz-score-ring {
  width: 150px; height: 150px; border-radius: 50%; margin: 6px auto 16px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: conic-gradient(var(--primary) var(--pct, 0%), #e8eef5 0);
  position: relative;
}
.quiz-score-ring::before {
  content: ""; position: absolute; inset: 12px; background: #fff; border-radius: 50%;
}
.quiz-score-num { position: relative; font-size: 44px; font-weight: 800; color: var(--dark); line-height: 1; }
.quiz-score-label { position: relative; font-size: 12px; color: var(--muted); margin-top: 4px; }
.quiz-result h3 { color: var(--dark); margin: 0 0 6px; }
.quiz-stats { display: flex; gap: 12px; justify-content: center; margin: 18px 0 24px; flex-wrap: wrap; }
.quiz-stat {
  background: #f4f8fc; border-radius: 12px; padding: 10px 22px; min-width: 110px;
}
.quiz-stat b { display: block; font-size: 22px; color: var(--dark); }
.quiz-stat span { font-size: 12px; color: var(--muted); }
.quiz-stat.ok b { color: #0d7a3f; }
.quiz-stat.bad b { color: #d33; }
.quiz-review { text-align: left; margin-top: 8px; }
.quiz-review-item {
  border: 1px solid #e8edf4; border-radius: 12px; padding: 14px 16px; margin-bottom: 10px;
  font-size: 14px;
}
.quiz-review-item .r-stem { font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.quiz-review-item .r-right { color: #0d7a3f; }
.quiz-review-item .r-wrong { color: #d33; }
.quiz-review-item.wrong { border-left: 4px solid #e5484d; }
.quiz-review-item.right { border-left: 4px solid #0d7a3f; }
.quiz-result-actions { display: flex; gap: 12px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }

/* ---------- 提示条 ---------- */
.quiz-toast {
  position: absolute; left: 50%; bottom: 88px; transform: translateX(-50%);
  background: rgba(20, 33, 46, .92); color: #fff; font-size: 14px;
  padding: 10px 22px; border-radius: 999px; white-space: nowrap;
  box-shadow: 0 10px 26px rgba(0,0,0,.25);
  animation: quizIn .25s ease;
}
.quiz-toast[hidden] { display: none !important; }
.quiz-modal { position: relative; }

/* ---------- 学考专区卡片 ---------- */
.exam-card { text-align: center; height: 100%; }
.exam-card .blurb-icon { font-size: 44px; }
.exam-card .card-title { font-size: 19px; }
.exam-card .meta { margin-bottom: 20px; }

@media (max-width: 640px) {
  .quiz-body { padding: 16px; }
  .quiz-head { padding: 14px 16px; }
  .quiz-timer { font-size: 19px; padding: 4px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .quiz-modal, .quiz-toast { animation: none; }
  .quiz-timer.warning { animation: none; }
}