/* ============================================================
   GULICALC Phase 2 — 00878 Reference Template Prototype
   Scoped under .etf-proto so no other article page (which only
   loads style.css) is affected. Reuses the same teal/cyan tokens
   and component language established in the Phase 1 homepage
   prototype (css/proto-v1.css) for visual consistency, but is a
   separate file since article pages have a narrower content column
   (~480-600px) than the homepage (1200px).
   ============================================================ */

.etf-proto {
  max-width: 560px;
  margin: 1.5rem auto;
}

.etf-proto-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 14px 18px 40px -24px rgba(13,140,132,.28);
}
.etf-proto-card .head {
  background: radial-gradient(140% 160% at 100% 0%, #0f3b38 0%, #0a6f69 60%, #0d8c84 100%);
  padding: 1.1rem 1.25rem;
}
.etf-proto-card .head .title { font-size: 1.05rem; color: #fff; font-weight: 600; margin: 0; }
.etf-proto-card .head .sub { font-size: .76rem; color: rgba(220,255,250,.78); margin: .2rem 0 0; }

/* ---------- Quick Answer (already-known data, no search needed) ---------- */
.etf-proto-qa { padding: 1.1rem 1.25rem 0; }
.etf-proto-qa-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .6rem;
}
.etf-proto-qa-cell {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: .7rem .5rem;
  text-align: center;
}
.etf-proto-qa-cell .k { font-size: .66rem; color: var(--text-muted); font-weight: 600; }
.etf-proto-qa-cell .v { font-size: 1rem; font-weight: 800; color: var(--text-primary); margin-top: .2rem; font-variant-numeric: tabular-nums; }
.etf-proto-qa-cell .v.accent { color: var(--accent); }
.etf-proto-qa-cell .v.green { color: var(--accent-green); }
.etf-proto-qa-source { font-size: .68rem; color: var(--text-muted); margin: .55rem 0 0; line-height: 1.5; }

/* ---------- Primary input: 持有數量 only ---------- */
.etf-proto-primary { padding: 1.1rem 1.25rem 0; }
.etf-proto-primary label { font-size: .85rem; font-weight: 600; color: var(--text-primary); display: block; margin-bottom: .4rem; }
.etf-proto-primary input {
  width: 100%;
  padding: .8rem .9rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: 12px;
  font-size: 1.15rem;
  color: var(--text-primary);
  outline: none;
  font-variant-numeric: tabular-nums;
  font-family: inherit;
}
.etf-proto-primary .hint { font-size: .7rem; color: var(--text-muted); margin-top: .3rem; display: block; }

/* ---------- Advanced (collapsed): 股價/每股股利 ---------- */
.etf-proto-advanced { padding: .9rem 1.25rem 1.1rem; }
.etf-proto-advanced summary {
  cursor: pointer;
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
  list-style: none;
  display: flex;
  align-items: center;
  gap: .35rem;
  user-select: none;
}
.etf-proto-advanced summary::-webkit-details-marker { display: none; }
.etf-proto-advanced summary::before { content: "▸"; font-size: .68rem; transition: transform .15s; }
.etf-proto-advanced[open] summary::before { transform: rotate(90deg); }
.etf-proto-advanced .grid { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; margin-top: .8rem; }
.etf-proto-advanced .grid label { font-size: .74rem; font-weight: 500; color: var(--text-secondary); display: block; margin-bottom: .3rem; }
.etf-proto-advanced .grid input {
  width: 100%;
  padding: .65rem .8rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  font-size: 1rem;
  color: var(--text-primary);
  outline: none;
  font-variant-numeric: tabular-nums;
  font-family: inherit;
}

/* ---------- Personal result ---------- */
.etf-proto-result { border-top: 1px solid var(--border-color); padding: 1.1rem 1.25rem 1.2rem; text-align: center; }
.etf-proto-result .yield-label { font-size: .7rem; color: var(--text-muted); font-weight: 600; letter-spacing: .04em; }
.etf-proto-result .yield-value { font-size: 2.1rem; font-weight: 800; color: var(--accent); line-height: 1.2; font-variant-numeric: tabular-nums; }
.etf-proto-result-grid { display: flex; justify-content: center; gap: 1.8rem; margin-top: .7rem; }
.etf-proto-result-cell .k { font-size: .66rem; color: var(--text-muted); font-weight: 600; }
.etf-proto-result-cell .v { font-size: 1.05rem; font-weight: 700; color: var(--text-primary); margin-top: .15rem; font-variant-numeric: tabular-nums; }
.etf-proto-result-cell .v.green { color: var(--accent-green); }
.etf-proto-result-cell .note { font-size: .62rem; color: var(--text-muted); margin-top: .2rem; max-width: 12ch; }
.etf-proto-basis { font-size: .68rem; color: var(--text-muted); margin-top: .6rem; }

/* ---------- Next Intent ---------- */
.etf-proto-intent-head { font-size: .95rem; font-weight: 800; color: var(--text-primary); margin: 1.6rem 0 .8rem; }
.etf-proto-intent-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: .6rem; }
.etf-proto-intent-card {
  display: flex; align-items: center; gap: .55rem;
  background: var(--bg-white); border: 1px solid var(--border-color); border-radius: 12px;
  padding: .8rem .9rem; text-decoration: none; transition: .15s;
}
.etf-proto-intent-card:hover { border-color: var(--accent); box-shadow: 0 8px 20px rgba(8,145,178,.1); transform: translateY(-1px); }
.etf-proto-intent-card .icon { width: 30px; height: 30px; flex: 0 0 auto; border-radius: 8px; background: var(--accent-light); color: var(--accent); display: flex; align-items: center; justify-content: center; }
.etf-proto-intent-card .txt { font-size: .82rem; font-weight: 600; color: var(--text-primary); line-height: 1.35; }

/* ---------- Secondary tool relabel (Calc #2: 歷史累積試算, kept & restyled) ---------- */
.etf-proto-secondary-label {
  display: inline-block;
  font-size: .68rem; font-weight: 700; color: var(--accent);
  background: var(--accent-light); padding: .2rem .6rem; border-radius: 6px;
  margin-bottom: .5rem;
}

@media (max-width: 640px) {
  .etf-proto-qa-grid { grid-template-columns: repeat(2, 1fr); }
  .etf-proto-result-grid { gap: 1.4rem; }
}

[data-theme="dark"] .etf-proto-qa-cell,
[data-theme="dark"] .etf-proto-intent-card {
  background: var(--bg-white);
  border-color: var(--border-color);
}