/* ============================================================
   Capynana 教学营 · 课后练习关卡组件（全营共用）
   依赖 style.css 的变量，勿单独使用
   ============================================================ */

/* ---------- 教程末尾的练习入口卡 ---------- */
.lab-entry {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  margin: 30px 0 8px;
  padding: 20px 22px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.lab-entry::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--accent);
}
.lab-entry .le-icon {
  flex: none;
  width: 46px; height: 46px; border-radius: 13px;
  background: var(--accent-soft); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.lab-entry .le-main { flex: 1; min-width: 220px; }
.lab-entry .le-badge {
  font-size: 12px; font-weight: 800; letter-spacing: .06em;
  color: var(--leaf-ink); background: var(--leaf-soft);
  border-radius: 999px; padding: 2px 10px;
  display: inline-block; margin-bottom: 6px;
}
.lab-entry .le-title { font-size: 17px; font-weight: 800; color: var(--text); margin: 0 0 4px; }
.lab-entry .le-desc { font-size: 14px; line-height: 1.7; color: var(--text-2); margin: 0 0 6px; }
.lab-entry .le-meta { font-size: 12.5px; color: var(--text-3); }
.lab-entry .le-btn {
  flex: none;
  font-family: inherit; font-size: 14.5px; font-weight: 800;
  color: #fff; background: var(--leaf);
  border: none; border-radius: 999px;
  padding: 11px 26px; cursor: pointer;
  transition: filter .15s, transform .15s;
}
.lab-entry .le-btn:hover { filter: brightness(1.08); }
.lab-entry .le-btn:active { transform: scale(.97); }

/* ---------- 练习弹窗 ---------- */
.lab-modal {
  position: fixed; inset: 0; z-index: 200;
  display: none;
  background: rgba(12, 10, 6, .62);
  backdrop-filter: blur(2px);
  padding: 28px 16px;
  overflow-y: auto;
}
.lab-modal.open { display: block; }
.lab-panel {
  max-width: 880px; margin: 0 auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .38);
  overflow: hidden;
}
.lab-panel-head {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 20px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 3;
}
.lab-panel-head .lp-icon { font-size: 20px; flex: none; line-height: 1.3; }
.lab-panel-head .lp-title { font-size: 17px; font-weight: 800; color: var(--text); }
.lab-panel-head .lp-sub { font-size: 13px; color: var(--text-3); margin-top: 2px; line-height: 1.6; }
.lab-panel-head .lp-close {
  margin-left: auto; flex: none;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-2); font-size: 17px; line-height: 1;
  cursor: pointer; transition: all .15s;
}
.lab-panel-head .lp-close:hover { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.lab-panel-body > * { margin: 0; border-radius: 0; border-left: none; border-right: none; border-top: none; }
.lab-panel-body .lab-gallery { border: none; }
.lab-panel-foot {
  padding: 12px 20px;
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-3);
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.lab-panel-foot .lp-dots { display: flex; gap: 6px; margin-left: auto; }
.lab-panel-foot .lp-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--border-strong);
}
.lab-panel-foot .lp-dot.done { background: var(--leaf); }
body.lab-lock { overflow: hidden; }
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin: 26px 0 30px;
  overflow: hidden;
}

.lab-head {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 13px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.lab-head .lab-badge {
  flex: none;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 800; letter-spacing: .04em;
  color: var(--leaf-ink); background: var(--leaf-soft);
  border: 1px solid transparent; border-radius: 999px;
  padding: 3px 12px;
}
.lab-head .lab-title { font-weight: 800; font-size: 15.5px; color: var(--text); }
.lab-head .lab-hint { font-size: 13px; color: var(--text-3); margin-left: auto; }

/* ---------- 课件预览器 ---------- */
.lab-gallery { position: relative; background: #14110c; }
.lab-gallery .lab-g-view { display: block; width: 100%; height: auto; }
.lab-g-cap {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  font-size: 13px; color: var(--text-2); line-height: 1.6;
}
.lab-g-cap .lab-g-page {
  flex: none;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  color: var(--accent-ink); background: var(--accent-soft);
  border-radius: 6px; padding: 2px 9px;
}
.lab-g-cap .lab-g-desc { flex: 1; min-width: 0; }
.lab-g-cap .lab-g-idx { flex: none; color: var(--text-3); font-family: var(--font-mono); font-size: 12.5px; }

.lab-g-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 38px; height: 38px; border-radius: 50%;
  border: none; cursor: pointer;
  background: rgba(20, 17, 12, .55); color: #fff;
  font-size: 17px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.lab-g-btn:hover { background: rgba(20, 17, 12, .8); }
.lab-g-btn.prev { left: 12px; }
.lab-g-btn.next { right: 12px; }
.lab-g-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- 关卡通用 ---------- */
.lab-step { padding: 20px 18px 22px; border-top: 1px dashed var(--border); }
.lab-step-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.lab-step-no {
  font-family: var(--font-mono); font-size: 13px; font-weight: 800;
  color: var(--accent-ink); background: var(--accent-soft);
  border-radius: 7px; padding: 2px 9px;
}
.lab-step-title { font-size: 16.5px; font-weight: 800; color: var(--text); }
.lab-step-sub { font-size: 13.5px; color: var(--text-3); margin: 0 0 14px; line-height: 1.7; }

.lab-actions { display: flex; align-items: center; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.lab-btn {
  font-family: inherit; font-size: 14px; font-weight: 700;
  color: #fff; background: var(--leaf);
  border: none; border-radius: 999px;
  padding: 9px 22px; cursor: pointer;
  transition: filter .15s, transform .15s;
}
.lab-btn:hover { filter: brightness(1.08); }
.lab-btn:active { transform: scale(.97); }
.lab-btn.ghost {
  color: var(--text-2); background: transparent;
  border: 1px solid var(--border-strong);
}
.lab-btn:disabled { opacity: .45; cursor: not-allowed; }

.lab-score-line { font-size: 14px; font-weight: 700; color: var(--text); }
.lab-score-line .good { color: var(--leaf-ink); }
.lab-score-line .poor { color: var(--danger); }

/* ---------- 关卡 1 · 判断卡 ---------- */
.lab-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(295px, 1fr)); gap: 10px; }
.lab-card {
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  padding: 12px 14px;
  cursor: pointer; user-select: none;
  transition: border-color .15s, background .15s, transform .15s;
  font-size: 14px; line-height: 1.65; color: var(--text);
}
.lab-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.lab-card:focus-visible { outline: 2px solid var(--leaf); outline-offset: 2px; }
.lab-card.sel { border-color: var(--leaf); background: var(--leaf-soft); box-shadow: inset 0 0 0 1px var(--leaf); }
.lab-card .card-mark {
  float: right; margin-left: 8px;
  font-size: 12px; font-weight: 800;
  color: var(--leaf-ink);
  opacity: 0; transition: opacity .15s;
}
.lab-card.sel .card-mark { opacity: 1; }

.lab-card.judged { cursor: default; }
.lab-card.judged:hover { transform: none; }
.lab-card.j-ok { border-color: var(--leaf); background: var(--leaf-soft); }
.lab-card.j-bad { border-color: var(--danger); background: var(--danger-soft); }
.lab-card.j-miss { border-color: var(--accent); border-style: dashed; background: var(--accent-soft); }
.lab-card.j-neutral { opacity: .78; }
.lab-card .card-verdict {
  display: inline-block;
  font-size: 11.5px; font-weight: 800; letter-spacing: .03em;
  border-radius: 6px; padding: 1px 8px; margin-bottom: 6px;
}
.lab-card.j-ok .card-verdict { color: var(--leaf-ink); background: rgba(46, 125, 107, .14); }
.lab-card.j-bad .card-verdict { color: var(--danger); background: rgba(214, 90, 68, .12); }
.lab-card.j-miss .card-verdict { color: var(--accent-ink); background: rgba(245, 184, 46, .16); }
.lab-card .card-why { display: block; margin-top: 8px; font-size: 13px; line-height: 1.7; color: var(--text-2); }
.lab-card .card-tag {
  display: inline-block; margin-top: 8px;
  font-size: 11.5px; font-weight: 700; font-family: var(--font-mono);
  color: var(--text-3);
  border: 1px solid var(--border); border-radius: 6px; padding: 1px 8px;
}

/* ---------- 关卡 2 · 分桶 ---------- */
.lab-bk-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 720px) { .lab-bk-cols { grid-template-columns: 1fr; } }
.lab-bk-col {
  border: 2px dashed var(--border-strong);
  border-radius: 14px; padding: 14px 14px 16px;
  background: var(--bg);
}
.lab-bk-col h4 { margin: 0 0 4px; font-size: 14.5px; font-weight: 800; color: var(--text); }
.lab-bk-col .bk-sub { font-size: 12.5px; color: var(--text-3); margin: 0 0 12px; line-height: 1.6; }
.lab-bk-col.j-hit { border-color: var(--leaf); border-style: solid; }
.lab-bk-col.j-err { border-color: var(--danger); border-style: solid; }

.lab-bk-item {
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface);
  padding: 10px 12px 11px;
  margin-bottom: 9px;
  font-size: 13.5px; line-height: 1.6; color: var(--text);
}
.lab-bk-item .bk-q { font-weight: 700; }
.lab-bk-opts { display: flex; gap: 8px; margin-top: 9px; }
.lab-bk-opt {
  font-family: inherit; font-size: 12.5px; font-weight: 700;
  color: var(--text-2); background: transparent;
  border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 3px 13px; cursor: pointer;
  transition: all .15s;
}
.lab-bk-opt:hover { border-color: var(--leaf); color: var(--text); }
.lab-bk-opt.on { color: var(--leaf-ink); background: var(--leaf-soft); border-color: var(--leaf); }
.lab-bk-opt.b.on { color: var(--accent-ink); background: var(--accent-soft); border-color: var(--accent); }

.lab-bk-item .card-why { display: block; margin-top: 8px; font-size: 12.5px; line-height: 1.65; color: var(--text-2); border-top: 1px dashed var(--border); padding-top: 7px; }
.lab-bk-item.j-ok { border-color: var(--leaf); background: var(--leaf-soft); }
.lab-bk-item.j-bad { border-color: var(--danger); background: var(--danger-soft); }

/* ---------- 关卡 3 · 写指令 ---------- */
.lab-write textarea {
  display: block; width: 100%;
  min-height: 92px; resize: vertical;
  font-family: inherit; font-size: 14.5px; line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border); border-radius: 12px;
  padding: 12px 14px;
}
.lab-write textarea:focus { outline: none; border-color: var(--leaf); }
.lab-write .lab-scene {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 10px 10px 0;
  padding: 11px 14px;
  font-size: 13.5px; line-height: 1.75; color: var(--text);
  margin-bottom: 12px;
}
.lab-answer { margin-top: 14px; display: none; }
.lab-answer.show { display: block; }
.lab-answer .lab-ans-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  padding: 13px 15px;
}
.lab-answer .lab-ans-card .who {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 800; color: var(--text-3);
  margin-bottom: 7px;
}
.lab-answer .lab-ans-card pre {
  margin: 0; font-family: var(--font-mono);
  font-size: 13.5px; line-height: 1.75; color: var(--text);
  white-space: pre-wrap; word-break: break-word;
}
.lab-checks { margin-top: 12px; display: grid; gap: 7px; }
.lab-check { display: flex; gap: 9px; align-items: flex-start; font-size: 13.5px; line-height: 1.65; color: var(--text-2); cursor: pointer; }
.lab-check input { margin-top: 4px; accent-color: var(--leaf); flex: none; }
.lab-check input:checked + span { color: var(--text); }

/* ---------- 成绩单 ---------- */
.lab-final { padding: 22px 18px; border-top: 1px dashed var(--border); background: var(--surface-2); }
.lab-final .score-ring-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; }
.lab-final .score-big {
  font-family: var(--font-mono); font-size: 34px; font-weight: 800; color: var(--leaf-ink);
}
.lab-final .score-big small { font-size: 15px; color: var(--text-3); font-weight: 700; }
.lab-final .score-msg { flex: 1; min-width: 220px; font-size: 14px; line-height: 1.7; color: var(--text-2); }
.lab-final .score-msg strong { color: var(--text); }

.lab-copybox {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  padding: 13px 15px;
  position: relative;
}
.lab-copybox pre {
  margin: 0; font-family: var(--font-mono);
  font-size: 13px; line-height: 1.8; color: var(--text);
  white-space: pre-wrap; word-break: break-word;
}
.lab-copybox .copy-btn {
  position: absolute; top: 10px; right: 10px;
  font-family: inherit; font-size: 12.5px; font-weight: 600;
  color: var(--leaf-ink); background: var(--leaf-soft);
  border: 1px solid transparent; border-radius: 999px;
  padding: 3px 12px; cursor: pointer; transition: all .15s;
}
.lab-copybox .copy-btn:hover { border-color: var(--leaf); }
.lab-copybox .copy-btn.copied { background: var(--leaf); color: #fff; }

/* ---------- 关卡 · 排序 ---------- */
.lab-sort-list { display: grid; gap: 9px; }
.lab-sort-item {
  display: flex; align-items: flex-start; gap: 12px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  padding: 12px 14px;
  cursor: pointer; user-select: none;
  font-size: 14px; line-height: 1.65; color: var(--text);
  transition: border-color .15s, background .15s, transform .15s;
}
.lab-sort-item:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.lab-sort-item:focus-visible { outline: 2px solid var(--leaf); outline-offset: 2px; }
.lab-sort-item.picked { border-color: var(--leaf); background: var(--leaf-soft); }
.lab-sort-item .sort-no {
  flex: none;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-3);
  font-family: var(--font-mono); font-size: 13px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.lab-sort-item.picked .sort-no { background: var(--leaf); border-color: var(--leaf); color: #fff; }
.lab-sort-tip { font-size: 13px; color: var(--text-3); margin: 0 0 12px; line-height: 1.7; }
.lab-sort-item.judged { cursor: default; }
.lab-sort-item.judged:hover { transform: none; }
.lab-sort-item.j-ok { border-color: var(--leaf); background: var(--leaf-soft); }
.lab-sort-item.j-bad { border-color: var(--danger); background: var(--danger-soft); }
.lab-sort-item .card-why { display: block; margin-top: 8px; font-size: 13px; line-height: 1.7; color: var(--text-2); }
.lab-sort-item .card-why b { color: var(--text); }

.lab-final .lab-final-note { font-size: 13px; color: var(--text-3); line-height: 1.7; margin-top: 10px; }