/* Mining calculator. Colours use the redesign tokens (docs/redesign/brief.md, 6.2); the fallbacks keep the page
   readable until the design branch defines them. --accent is deliberately not used: the redesign gives it to "energy" notes. */
.calculator {
    --calc-bg: var(--bg, #fff);
    --calc-surface: var(--surface, #f4f6f8);
    --calc-surface-2: var(--surface-2, #e9eef3);
    --calc-border: var(--border, #d5dce4);
    --calc-field-border: var(--field-border, #738294);
    --calc-ink: var(--ink, #0e1b26);
    --calc-muted: var(--ink-muted, #475667);
    --calc-brand: var(--brand, #0b5f94);
    --calc-brand-soft: var(--brand-soft, #e6f1f8);
    --calc-good: var(--good, #0f7b4f);
    --calc-bad: var(--bad, #b42318);
    color: var(--calc-ink);
    font-variant-numeric: tabular-nums;
}

.calculator__intro,
.calculator__updated { max-width: 70ch; }
.calculator__updated { color: var(--calc-muted); margin: 0 0 1rem; }

.calculator__market { margin: 0 0 1.5rem; }
.calculator__market > summary { cursor: pointer; font-weight: 600; padding-block: .5rem; }
.calculator__market-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
    gap: .75rem 1.5rem;
    margin: .75rem 0;
}
.calculator__market-list div { min-width: 0; }
.calculator__market-list dt { color: var(--calc-muted); font-size: .875rem; }
.calculator__market-list dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }

.calculator__layout { display: grid; gap: 1.5rem; align-items: start; }
@media (min-width: 64rem) { .calculator__layout { grid-template-columns: minmax(18rem, 22rem) minmax(0, 1fr); } }

.calculator__form,
.calculator__output {
    min-width: 0;
    border: 1px solid var(--calc-border);
    border-radius: 12px;
    padding: 1rem;
    background: var(--calc-surface);
}
.calculator__output { background: var(--calc-bg); }
.calculator__output[aria-busy="true"] { opacity: .6; }

.calc-field { margin: 0 0 1rem; min-width: 0; }
.calc-field__label { display: block; margin-bottom: .25rem; font-weight: 600; }
.calc-field__input {
    width: 100%;
    min-height: 3rem;
    padding: .5rem .75rem;
    border: 1px solid var(--calc-field-border);
    border-radius: 8px;
    background: var(--calc-bg);
    color: inherit;
    font: inherit;
}
.calc-field__input:focus-visible,
.calculator__submit:focus-visible,
.calc-result__cta .button:focus-visible { outline: 2px solid var(--calc-brand); outline-offset: 2px; }
.calc-field__input[aria-invalid] { border-color: var(--calc-bad); }
.calc-field__note,
.calc-note { margin: .25rem 0 0; color: var(--calc-muted); font-size: .875rem; }
.calc-field__error { margin: .25rem 0 0; color: var(--calc-bad); font-size: .875rem; }
.calc-field--group { border: 0; padding: 0; }
.calc-field--group > .calc-field__label { padding: 0; }
.calc-choices { display: flex; flex-wrap: wrap; gap: .5rem; }
.calc-choice {
    position: relative;
    flex: 1 1 9rem;
    display: flex;
    align-items: center;
    gap: .5rem;
    min-height: 3rem;
    padding: .5rem .75rem;
    border: 1px solid var(--calc-field-border);
    border-radius: 8px;
    background: var(--calc-bg);
    cursor: pointer;
}
.calc-choice input { flex: none; width: 1.125rem; height: 1.125rem; margin: 0; accent-color: var(--calc-brand); }
.calc-choice:has(input:checked) { border-color: var(--calc-brand); background: var(--calc-brand-soft); font-weight: 600; }
.calc-choice:has(input:focus-visible) { outline: 2px solid var(--calc-brand); outline-offset: 2px; }
.calc-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 0 .75rem; }
.calc-check { display: flex; gap: .5rem; align-items: flex-start; }
.calc-check input { flex: none; margin-top: .3rem; }
.calculator__submit { width: 100%; min-height: 3rem; }
.calc-status { margin: .75rem 0 0; color: var(--calc-bad); }

.calc-result__title { margin-top: 1.5rem; }
.calc-result__title:first-child,
.calc-callout + .calc-result__title { margin-top: 0; }
.calc-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: .75rem; margin: 0 0 1.25rem; }
.calc-card { min-width: 0; border: 1px solid var(--calc-border); border-radius: 8px; padding: .75rem; background: var(--calc-surface); }
.calc-card--main { grid-column: 1 / -1; background: var(--calc-brand-soft); }
.calc-card__label { color: var(--calc-muted); font-size: .875rem; }
.calc-card__value { margin: .25rem 0 0; font-size: 1.75rem; font-weight: 600; line-height: 1.2; overflow-wrap: break-word; }
.calc-card__value--text { font-size: 1.0625rem; }
.calc-card__hint { margin: .25rem 0 0; color: var(--calc-muted); font-size: .75rem; }
.calc-schedule { margin: 0 0 1.25rem; color: var(--calc-muted); }
.calc-schedule strong { color: var(--calc-ink); }
.calc-good { color: var(--calc-good); }
.calc-bad { color: var(--calc-bad); }

.calc-table { width: 100%; border-collapse: collapse; margin: 0 0 .75rem; font-size: .9375rem; }
.calc-table__caption { text-align: left; font-weight: 600; padding-bottom: .5rem; }
.calc-table th,
.calc-table td { padding: .5rem .5rem; border-top: 1px solid var(--calc-border); text-align: right; }
.calc-table th:first-child { text-align: left; }
.calc-table thead th { border-top: 0; color: var(--calc-muted); font-weight: 500; font-size: .875rem; }
.calc-table tbody tr:nth-child(odd) { background: var(--calc-surface); }

@media (max-width: 40rem) {
    .calc-table thead { position: absolute; left: -9999px; }
    .calc-table tr { display: block; padding: .5rem 0; border-top: 1px solid var(--calc-border); }
    .calc-table th,
    .calc-table td { display: flex; justify-content: space-between; gap: 1rem; border: 0; padding: .25rem .5rem; text-align: right; }
    .calc-table th[scope="row"] { font-weight: 600; text-align: left; }
    .calc-table td::before { content: attr(data-label); color: var(--calc-muted); text-align: left; }
}

/* One label and one value per row stay on one line on a phone. */
@media (max-width: 40rem) {
    .calc-table--metrics tr { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
    .calc-table--metrics th,
    .calc-table--metrics td { display: block; }
}

.calc-callout {
    margin: 0 0 1rem;
    padding: .75rem 1rem;
    border-left: 4px solid var(--calc-muted);
    background: var(--calc-surface);
}
.calc-callout--brand { border-left-color: var(--calc-brand); background: var(--calc-brand-soft); }
.calc-callout--bad { border-left-color: var(--calc-bad); }
.calculator__disclaimer { margin-top: 1.5rem; font-size: .9375rem; }

.calc-result__cta { margin: 1rem 0 0; }
.calc-result__cta .button { width: 100%; min-height: 3rem; text-align: center; }
@media (min-width: 40rem) { .calc-result__cta .button { width: auto; } }

@media (prefers-reduced-motion: no-preference) {
    .calculator__output { transition: opacity .15s; }
}