/* strategy-lab.css — 策略實驗室
   簽名元素：古籍書封式策略卡（直排書名+金印風險+硃砂槓桿章），其餘保持安靜 */

/* ── 策略書架 ─────────────────────────────── */
.lab-shelf {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 18px;
  margin-bottom: 10px;
}

/* 書封卡：外框+內襯雙線，如線裝書封面 */
.lab-card {
  position: relative;
  background: var(--paper-bright, #fbf8ef);
  border: 1px solid var(--paper-line);
  padding: 14px;
  min-height: 232px;
  cursor: pointer;
  display: flex;
  gap: 12px;
  transition: transform .22s ease, box-shadow .22s ease, outline-color .18s;
  outline: 2px solid transparent;
  outline-offset: 2px;
}
.lab-card::before {           /* 內襯線 */
  content: '';
  position: absolute; inset: 6px;
  border: 1px solid rgba(184, 146, 77, 0.28);
  pointer-events: none;
}
.lab-card:hover { transform: translateY(-3px); box-shadow: 0 8px 22px rgba(26, 36, 56, 0.10); }
.lab-card.sel { outline-color: var(--gold); }
.lab-card:focus-visible { outline-color: var(--gold); }

/* 直排書名（書脊式） */
.lab-card-spine {
  writing-mode: vertical-rl;
  font-family: var(--font-cn);
  font-size: 19px;
  letter-spacing: .34em;
  color: var(--ink);
  border-right: 1px solid rgba(184, 146, 77, 0.35);
  padding: 6px 2px 6px 10px;
  flex: 0 0 auto;
  line-height: 1.15;
}
.lab-card-body { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.lab-card-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: var(--fs-nano);
  color: var(--gold-deep, #8a6a2a);
  letter-spacing: .04em;
  margin-bottom: 6px;
}
.lab-card-icon { color: var(--gold-deep, #8a6a2a); margin: 2px 0 8px; }

/* 適用週期章（墨框小章） */
.lab-horizon {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-cn);
  font-size: var(--fs-nano);
  letter-spacing: .14em;
  color: var(--ink-soft, #3c465c);
  border: 1px solid currentColor;
  padding: 1px 7px 0;
  margin-bottom: 8px;
}
.lab-horizon.long { color: var(--gold-deep, #8a6a2a); }

.lab-card-sum {
  font-family: var(--font-cn);
  font-size: var(--fs-nano);
  line-height: 1.75;
  color: var(--ink-soft, #3c465c);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* 風險金印列：實印=風險級數 */
.lab-risk { display: flex; align-items: center; gap: 4px; margin-top: 10px; }
.lab-risk .seal {
  width: 11px; height: 11px; border-radius: 50%;
  border: 1px solid var(--gold);
  background: transparent;
}
.lab-risk .seal.on { background: var(--gold); box-shadow: inset 0 0 0 1.5px var(--paper-bright, #fbf8ef); }
.lab-risk .lab-risk-label {
  font-family: var(--font-cn);
  font-size: var(--fs-nano); color: var(--ink-mute); margin-left: 4px;
}

/* 卡底歷史績效小字 */
.lab-card-foot {
  margin-top: 8px; padding-top: 7px;
  border-top: 1px dashed rgba(184, 146, 77, 0.35);
  font-family: var(--font-en);
  font-size: var(--fs-nano); color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

/* 引擎小標（trade/event） */
.lab-engine {
  position: absolute; top: 10px; right: 12px;
  font-family: var(--font-en); font-style: italic;
  font-size: var(--fs-nano); color: var(--ink-mute); letter-spacing: .06em;
}

/* ── 教學卡（概念課，非策略）───────────────── */
.lab-notes { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin-bottom: 8px; align-items: start; }
.lab-note-card {
  background: var(--paper);
  border: 1px solid var(--paper-line);
  border-left: 3px solid var(--gold);
  padding: 12px 16px;
  cursor: pointer;
  transition: background .18s;
}
.lab-note-card:hover { background: var(--paper-bright, #fbf8ef); }
.lab-note-title { font-family: var(--font-cn); font-size: var(--fs-sm); color: var(--ink); }
.lab-note-en { font-family: var(--font-en); font-style: italic; font-size: var(--fs-nano); color: var(--ink-mute); margin-top: 2px; }
.lab-note-body {
  font-family: var(--font-cn); font-size: var(--fs-xs); line-height: 2;
  color: var(--ink-soft, #3c465c);
  border-top: 1px dashed rgba(184, 146, 77, 0.35);
  margin-top: 10px; padding-top: 10px;
}
.lab-note-body p { margin: 0 0 10px; }

/* ── 展開詳情：規則/警語 ───────────────────── */
.lab-rules { list-style: none; padding: 0; margin: 0; }
.lab-rules li {
  font-family: var(--font-cn); font-size: var(--fs-xs); line-height: 1.9;
  color: var(--ink-soft, #3c465c);
  padding-left: 20px; position: relative; margin-bottom: 6px;
}
.lab-rules li::before {
  content: '§';
  position: absolute; left: 0; top: 0;
  font-family: var(--font-en);
  color: var(--gold); font-size: var(--fs-xs);
}

/* 硃砂警語框（槓桿/風險 caveats） */
.lab-caveat {
  border: 1.5px solid rgba(194, 58, 43, 0.55);
  padding: 10px 14px;
  position: relative;
  background: rgba(194, 58, 43, 0.035);
}
.lab-caveat::after {
  content: '慎';
  position: absolute; top: -11px; right: 10px;
  font-family: var(--font-cn); font-size: var(--fs-xs);
  color: #c23a2b; background: var(--paper);
  border: 1px solid rgba(194, 58, 43, 0.55);
  padding: 1px 5px 0; transform: rotate(3deg);
}
.lab-caveat li { font-size: var(--fs-xs); line-height: 1.9; color: #8a3328; margin-bottom: 5px; padding-left: 14px; position: relative; list-style: none; }
.lab-caveat li::before { content: '·'; position: absolute; left: 2px; color: #c23a2b; }
.lab-caveat ul { margin: 0; padding: 0; }

/* ── 回測工作台 ────────────────────────────── */
.lab-bench-label { font-family: var(--font-cn); font-size: var(--fs-nano); color: var(--ink-mute); margin-bottom: 4px; }
.lab-input {
  padding: 4px 8px;
  font-family: var(--font-en); font-size: var(--fs-sm);
  border: 1px solid var(--paper-line); background: var(--paper); color: var(--ink);
}
.lab-input:focus-visible { outline: 2px solid var(--gold); outline-offset: 1px; }
select.lab-input { font-family: var(--font-cn); font-size: var(--fs-xs); }

.lab-btn {
  padding: 7px 22px;
  font-family: var(--font-cn); font-size: var(--fs-sm); letter-spacing: .1em;
  cursor: pointer; border: 1.5px solid var(--gold);
  background: var(--ink); color: var(--gold);
  transition: opacity .15s;
}
.lab-btn:disabled { background: var(--paper-bright, #fbf8ef); color: var(--ink-mute); cursor: default; }
.lab-btn.ghost { background: transparent; color: var(--gold-deep, #8a6a2a); }
.lab-btn.stop { border-color: rgba(194, 58, 43, 0.6); color: #c23a2b; background: transparent; }

/* 尋優進度 */
.lab-progress { height: 6px; background: var(--paper-line); position: relative; overflow: hidden; }
.lab-progress > i {
  position: absolute; inset: 0 auto 0 0; display: block;
  background: linear-gradient(90deg, var(--gold-deep, #8a6a2a), var(--gold));
  transition: width .12s linear;
}

/* ── 成果 ─────────────────────────────────── */
.lab-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.lab-table th {
  font-family: var(--font-cn); font-size: var(--fs-nano); font-weight: 400;
  color: var(--ink-mute); text-align: right; padding: 6px 10px;
  border-bottom: 1.5px solid var(--paper-line); white-space: nowrap;
}
.lab-table td {
  font-family: var(--font-en); font-size: var(--fs-xs);
  color: var(--ink); text-align: right; padding: 6px 10px;
  border-bottom: 1px solid var(--paper-line); white-space: nowrap;
}
.lab-table th:first-child, .lab-table td:first-child { text-align: left; }
.lab-table tbody tr { transition: background .15s; }
.lab-table tbody tr:hover { background: rgba(184, 146, 77, 0.06); }
.lab-table tbody tr.clickable { cursor: pointer; }

.lab-dist-bar { display: flex; align-items: flex-end; gap: 3px; height: 110px; }
.lab-dist-bar .bkt { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 3px; min-width: 0; }
.lab-dist-bar .bkt i { display: block; width: 100%; background: var(--gold); opacity: .82; }
.lab-dist-bar .bkt.neg i { background: var(--bear, #9c2b2b); opacity: .6; }
.lab-dist-bar .bkt span { font-family: var(--font-en); font-size: 8.5px; color: var(--ink-mute); white-space: nowrap; }

/* 手機 */
@media (max-width: 700px) {
  .lab-shelf { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
  .lab-card { min-height: 200px; padding: 10px; }
  .lab-card-spine { font-size: 16px; letter-spacing: .22em; }
}

@media (prefers-reduced-motion: reduce) {
  .lab-card, .lab-card:hover { transition: none; transform: none; }
}