/* Operate surface. Inherits Barbaro's cream, Bitter and Manrope identity. */
.calculator { max-width: 820px; margin: 32px auto 56px; color: var(--ink); font-family: var(--font-app); line-height: 1.55; }
.calculator h1, .calculator h2 { font-family: var(--font-brand); font-weight: 400; line-height: 1.2; }
.calculator h1 { font-size: clamp(34px, 5vw, 48px); color: var(--rust); margin: 0 0 12px; }
.calculator h2 { font-size: 26px; margin: 0 0 12px; }
.calculator p { margin: 0 0 12px; }
.calculator .calc-lead { font-size: 18px; max-width: 62ch; }
.calc-caption, .calc-note { color: var(--text-secondary); font-size: 14px; }
.calc-example { margin-block: 18px 24px !important; padding: 14px 18px; background: var(--section-bg); border-radius: 8px; }
.calc-inputs { padding: 24px; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 12px; }
.calc-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin: 18px 0; }
.calc-field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.calc-field label, .calc-mode label { font-weight: 600; font-size: 14px; }
.calculator input, .calculator select { min-width: 0; width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid var(--card-border); border-radius: 6px; color: var(--ink); background: var(--cream); font: inherit; }
.calc-mode { max-width: 250px; display: grid; gap: 6px; }
.calculator button, .calc-link { min-height: 44px; padding: 10px 20px; border: 1px solid var(--rust); border-radius: 7px; font: inherit; font-weight: 600; cursor: pointer; color: var(--rust); background: transparent; text-align: center; }
.calculator .calc-primary { color: var(--card-bg); background: var(--rust); }
.calculator .calc-primary:hover { background: var(--rust-hover); border-color: var(--rust-hover); }
.calculator button:not(.calc-primary):hover, .calc-link:hover { background: var(--section-bg); }
.calculator button:active, .calc-link:active { transform: translateY(1px); }
.calculator button:disabled { cursor: default; opacity: .55; transform: none; }
.calculator :focus-visible { outline: 2px solid var(--rust); outline-offset: 3px; }
.calculator a { color: var(--rust); text-underline-offset: 3px; }
.calc-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.calc-assumptions { margin: 20px 0 0; font-size: 14px; }
.calc-assumptions summary { cursor: pointer; min-height: 44px; display: list-item; padding-block: 10px; color: var(--rust); }
.calc-assumptions ul { margin: 8px 0 0; padding-left: 20px; }
.calc-assumptions li + li { margin-top: 6px; }
.calc-status { margin: 18px 0 !important; min-height: 25px; }
.calc-status[data-error='true'], .calc-warnings { color: var(--ink); background: var(--section-bg); padding: 14px 18px; border: 1px solid var(--card-border); border-radius: 8px; }
.calc-results { border-top: 1px solid var(--divider-light); padding-top: 24px; margin-top: 24px; }
.calc-results[data-stale='true'] h2::after { content: ' · Previous result'; font: 14px var(--font-app); color: var(--text-secondary); }
.calc-totals { display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 16px 0 24px; }
.calc-totals div { display: flex; gap: 8px; align-items: baseline; }
.calc-totals dt { color: var(--text-secondary); }
.calc-totals dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }
.calc-table { width: 100%; border-collapse: collapse; margin: 12px 0 24px; font-size: 15px; }
.calc-table caption { text-align: left; font-weight: 600; font-size: 18px; padding-block: 6px 10px; }
.calc-table th, .calc-table td { border-bottom: 1px solid var(--divider-light); padding: 11px 8px; text-align: left; overflow-wrap: anywhere; }
.calc-table th { font-weight: 500; }
.calc-table td:last-child { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.calc-table .calc-subrow th { padding-left: 24px; color: var(--text-secondary); font-size: 14px; }
.calc-table .calc-subrow td { color: var(--text-secondary); font-size: 14px; }
.calc-warnings { margin-block: 16px; }
.calc-warnings h3 { margin: 0 0 8px; font-size: 16px; }
.calc-warnings ul { padding-left: 20px; margin: 0; }
.calc-warnings li + li { margin-top: 8px; }
.calc-continue { margin-top: 22px; }
.calc-return { display: inline-block; margin-top: 24px; padding-block: 8px; }
.calc-embedded { margin: 0; background: var(--cream); }
.calc-embedded .calculator { margin: 0; max-width: none; padding: 20px; }
.calc-embedded .calculator h1 { font-size: 30px; }
.calc-embedded .calc-inputs { padding: 18px; }
[hidden] { display: none !important; }
@media (max-width: 540px) {
  .calculator { margin-top: 24px; }
  .calc-inputs { padding: 18px; }
  .calc-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .calc-mode { max-width: none; }
  .calc-actions > .calc-primary { flex: 1; }
  .calc-embedded .calculator { padding: 16px; }
  .calc-table th, .calc-table td { padding-inline: 4px; }
  .calc-table .calc-subrow th { padding-left: 14px; }
}
@media (forced-colors: active) { .calculator button, .calc-inputs { border-color: ButtonText; } .calculator .calc-primary { background: ButtonFace; color: ButtonText; } }