/* 주식 평단가 계산기 전용 스타일 */

nav { max-width: 820px; }
main { max-width: 820px; }

.card-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.85rem;
}

.sa-card,
.result-card,
.roi-card {
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 0.95rem;
}

/* ─────────────────────── 매수 차수 입력 ─────────────────────── */
.buy-head, .buy-row {
  display: grid;
  grid-template-columns: 32px 1.2fr 0.85fr 1.1fr 32px;
  gap: 0.5rem;
  align-items: center;
}
.buy-head {
  padding: 0 0.2rem 0.45rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-sub);
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.5rem;
}
.bh-price, .bh-qty, .bh-amt { text-align: right; }
.bh-no { text-align: center; }

.buy-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 0.6rem;
}

.buy-row {
  padding: 0.15rem 0.2rem;
}

.row-no {
  text-align: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-sub);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

.buy-row input {
  width: 100%;
  padding: 0.55rem 0.65rem;
  font-size: 0.96rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  font-variant-numeric: tabular-nums;
  text-align: right;
  transition: border-color 0.15s;
}
.buy-row input:focus { border-color: var(--primary); }

.row-amt {
  text-align: right;
  font-size: 0.92rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.btn-row-remove {
  width: 30px;
  height: 30px;
  font-size: 0.8rem;
  background: transparent;
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-row-remove:hover {
  background: rgba(239, 68, 68, 0.08);
  border-color: var(--error);
  color: var(--error);
}

.btn-add-row {
  width: 100%;
  padding: 0.6rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg);
  color: var(--text-sub);
  border: 1px dashed var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.btn-add-row:hover {
  border-color: var(--primary);
  border-style: solid;
  color: var(--primary);
}

/* 옵션 */
.sa-opts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.5rem;
  margin-top: 0.95rem;
  padding-top: 0.95rem;
  border-top: 1px dashed var(--border);
}
.opt-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.opt-label {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.opt-label em {
  font-style: normal;
  font-size: 0.7rem;
  color: var(--text-sub);
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  margin-left: 0.2rem;
}
.opt-input {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0 0.6rem 0 0;
}
.opt-input input {
  flex: 1;
  min-width: 0;
  padding: 0.45rem 0.6rem;
  font-size: 0.9rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--text);
  outline: none;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.opt-unit {
  font-size: 0.8rem;
  color: var(--text-sub);
}

/* ─────────────────────── 결과 카드 ─────────────────────── */
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem 1rem;
}
.result-cell {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}
.result-cell.highlight {
  grid-column: 1 / -1;
  padding: 0.95rem 1rem;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: 9px;
  margin-top: 0.4rem;
}
.cell-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.cell-label em {
  font-style: normal;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-sub);
  text-transform: none;
  letter-spacing: 0;
  margin-left: 0.2rem;
}
.cell-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}
.cell-value.big {
  font-size: 1.6rem;
  color: var(--primary);
}
.cell-value.mono {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-variant-numeric: tabular-nums;
}
.cell-value.breakeven { color: #d97706; }
@media (prefers-color-scheme: dark) {
  .cell-value.breakeven { color: #fbbf24; }
}

/* ─────────────────────── ROI 카드 ─────────────────────── */
.roi-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1rem;
}
.roi-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.roi-input {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 0.75rem 0 0;
  transition: border-color 0.15s;
}
.roi-input:focus-within { border-color: var(--primary); }
.roi-input input {
  flex: 1;
  min-width: 0;
  padding: 0.7rem 0.85rem;
  font-size: 1.15rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--text);
  outline: none;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.roi-unit {
  font-size: 0.85rem;
  color: var(--text-sub);
  font-weight: 600;
}

.roi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}
.roi-cell {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.7rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.roi-cell.highlight.pos {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.35);
}
.roi-cell.highlight.neg {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.35);
}
.roi-cell-label {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.roi-cell-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}
.roi-cell-value.big { font-size: 1.5rem; }
.roi-cell-value.mono {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-variant-numeric: tabular-nums;
}
.roi-cell-value.neg { color: var(--error); }
.roi-cell.highlight.pos .roi-cell-value.big { color: #15803d; }
.roi-cell.highlight.neg .roi-cell-value.big { color: var(--error); }
@media (prefers-color-scheme: dark) {
  .roi-cell.highlight.pos .roi-cell-value.big { color: #4ade80; }
}

.sa-note {
  margin-bottom: 1.5rem;
  padding: 0.7rem 0.9rem;
  font-size: 0.82rem;
  color: var(--text-sub);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  line-height: 1.65;
}

@media (max-width: 600px) {
  .buy-head, .buy-row {
    grid-template-columns: 28px 1fr 0.8fr 1fr 28px;
    gap: 0.35rem;
  }
  .bh-amt { font-size: 0.66rem; }
  .result-grid { grid-template-columns: 1fr; }
  .roi-grid { grid-template-columns: 1fr; }
  .sa-opts { grid-template-columns: 1fr 1fr; }
}