/* 공통 폰트, 색상, 헤더, 푸터는 루트 style.css를 그대로 사용합니다. */
.calculator { padding-top: 30px; }
.back-link { display: inline-block; margin-bottom: 30px; color: #537292; font-size: 14px; padding: 6px 0; }
.calculator-layout { display: grid; grid-template-columns: minmax(0, 350px) minmax(0, 1fr); align-items: start; gap: 28px; margin-top: 36px; }
.panel, .metric { border: 1px solid #dfe5ec; border-radius: 12px; background: #fff; }
.panel { padding: 24px; }
.field-help { margin: 0 0 20px; color: #657386; font-size: 14px; line-height: 1.8; word-break: keep-all; }
fieldset { margin: 0 0 20px; padding: 0; border: 0; min-width: 0; }
legend { margin-bottom: 12px; padding: 0; color: #365675; font-size: 14px; font-weight: 600; }
.dimension-fields, .quantity-fields { display: grid; gap: 10px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.quantity-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field-stack { display: grid; gap: 18px; }
label { display: flex; flex-direction: column; gap: 8px; min-width: 0; color: #526176; font-size: 14px; line-height: 1.5; }
input, select { width: 100%; min-width: 0; min-height: 44px; padding: 10px; border: 1px solid #d4dde7; border-radius: 6px; background: #fff; color: #202d3c; font: inherit; font-size: 16px; font-variant-numeric: tabular-nums; }
input:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid #2865a5; outline-offset: 3px; }
input[aria-invalid="true"] { border-color: #a4473d; background: #fffaf9; }
.container-settings { margin-top: 24px; padding-top: 20px; border-top: 1px solid #e3e8ee; }
summary { cursor: pointer; color: #526176; font-size: 14px; padding: 4px 0; }
summary span { float: right; color: #788697; font-size: 14px; }
.container-settings[open] summary { margin-bottom: 16px; }
.input-status { margin: 16px 0 0; color: #a4473d; font-size: 14px; line-height: 1.7; }
.input-status:empty, .loading-status:empty { display: none; }
.field-error { color: #a4473d; font-size: 14px; line-height: 1.6; }
.field-error:empty { display: none; }
.capacity-comparison { margin-bottom: 20px; }
.final-capacity { grid-column: 1 / -1; padding: 16px; border-radius: 8px; background: #edf3fa; }
.loading-stats dd { flex-shrink: 0; }
.results { min-width: 0; }
dl { margin: 0; }
.result-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.metric { padding: 20px; min-width: 0; }
dt { color: #657386; font-size: 14px; line-height: 1.6; }
dd { margin: 9px 0 0; color: #233f61; font-size: 23px; line-height: 1.4; font-weight: 650; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.featured { background: #edf3fa; border-color: #d6e2ef; }
.metric-wide { grid-column: 1 / -1; }
.loading-panel { margin-top: 24px; }
.loading-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 20px; }
.capacity dd { font-size: 30px; }
.loading-grid dt { font-size: 14px; }
.orientation { margin: 16px 0 20px; color: #657386; font-size: 14px; line-height: 1.8; overflow-wrap: anywhere; }
.loading-stats { border-top: 1px solid #e3e8ee; padding-top: 6px; }
.loading-stats > div { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding-top: 13px; }
.loading-stats dd { margin: 0; font-size: 16px; text-align: right; }
.loading-stats small { font-size: 10px; color: #788697; display: inline-block; }
.loading-status, .notice { background: #edf3fa; color: #365675; padding: 12px; border-radius: 6px; font-size: 14px; line-height: 1.7; margin: 20px 0 0; }
.calculation-note { margin: 20px 0 0; color: #6d7a8a; font-size: 14px; line-height: 1.9; word-break: keep-all; }
@media (max-width: 900px) {
  .calculator-layout { grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 20px; }
  .panel, .metric { padding: 18px; }
  .loading-grid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  dd { font-size: 20px; }
}
@media (max-width: 720px) {
  .calculator-layout { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .panel { padding: 24px; }
  .loading-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 420px) {
  .result-grid, .loading-grid { grid-template-columns: minmax(0, 1fr); }
  .panel { padding: 18px; }
  .back-link { margin-bottom: 22px; }
}

/* 기존 폭과 카드 간격을 유지하면서 안내와 선택 UI의 가독성을 높입니다. */
.calculator .intro-description { font-size: 16px; }
.back-link, summary, legend { font-size: 14px; }
.calculator .section-note { font-size: 12px; }
.value-note { color: #537292; font-size: 14px; line-height: 1.7; overflow-wrap: anywhere; }
.value-note:empty { display: none; }
.exchange-field { display: grid; gap: 8px; }
.exchange-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 8px; color: #526176; font-size: 14px; }
.exchange-row .field-error { grid-column: 1 / -1; grid-row: 2; }
.loading-stats dd { flex-shrink: 1; min-width: 0; }

.value-fields { margin: 0; }
.value-note { margin: 0; }
.unit-values { background: #f6f8fa; border-radius: 6px; padding: 12px; color: #657386; font-size: 14px; }
.unit-values p { margin: 0 0 8px; }
.unit-values ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; overflow-wrap: anywhere; }
.rate-help { margin: 12px 0 0; }
.container-buttons { display: flex; gap: 10px; }
.container-buttons button { flex: 1; min-height: 44px; border: 1px solid #d4dde7; border-radius: 6px; background: #fff; color: #526176; font: inherit; font-size: 15px; cursor: pointer; }
.container-buttons button[aria-pressed="true"] { background: #edf3fa; border-color: #537292; color: #233f61; font-weight: 650; }
.container-buttons button:focus-visible { outline: 2px solid #2865a5; outline-offset: 3px; }