/* Fuel cost calculator */
.fuel-intro { max-width: 900px; }
.fuel-panel { display: grid; gap: 1.15rem; }
.fuel-panel-heading { display: flex; align-items: center; justify-content: space-between; gap: .8rem; }
.fuel-panel-heading h2 { margin: 0; }
.fuel-reset, .fuel-copy { min-height: 44px; }
.fuel-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .35rem; padding: .35rem; border-radius: 14px; background: var(--color-surface-soft, #edf5f3); }
.fuel-tab { min-width: 0; min-height: 48px; padding: .7rem .8rem; border: 0; border-radius: 10px; background: transparent; color: var(--color-text, #17322f); font: inherit; font-weight: 800; cursor: pointer; }
.fuel-tab[aria-selected="true"] { background: #fff; color: var(--color-primary, #146b63); box-shadow: 0 2px 8px rgba(20, 107, 99, .13); }
.fuel-tab:focus-visible { outline: 3px solid rgba(20, 107, 99, .34); outline-offset: 2px; }
.fuel-tab-panel { display: grid; gap: 1rem; min-width: 0; }
.fuel-tab-panel[hidden] { display: none; }
.fuel-field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.fuel-field { display: grid; align-content: start; gap: .5rem; min-width: 0; }
.fuel-field > label, .fuel-trip-field legend { font-weight: 800; }
.fuel-input-with-suffix { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: .5rem; min-width: 0; }
.fuel-input { box-sizing: border-box; width: 100%; min-width: 0; min-height: 48px; padding: .7rem .8rem; border: 1px solid var(--color-border, #c8d8d5); border-radius: 10px; background: #fff; color: var(--color-text, #17322f); font: inherit; }
.fuel-input:focus { border-color: var(--color-primary, #146b63); outline: 3px solid rgba(20, 107, 99, .18); }
.fuel-trip-field { margin: 0; padding: 1rem; border: 1px solid var(--color-border, #c8d8d5); border-radius: 12px; }
.fuel-trip-field legend { padding: 0 .35rem; }
.fuel-choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; }
.fuel-choice-grid label { display: flex; align-items: center; gap: .55rem; min-height: 46px; padding: .65rem .8rem; border: 1px solid var(--color-border, #c8d8d5); border-radius: 10px; background: #fff; font-weight: 700; cursor: pointer; }
.fuel-choice-grid input { inline-size: 1.2rem; block-size: 1.2rem; accent-color: var(--color-primary, #146b63); }
.fuel-choice-grid label:focus-within { border-color: var(--color-primary, #146b63); outline: 3px solid rgba(20, 107, 99, .18); }
.fuel-error { min-height: 1.5em; margin: 0; color: #a12b2b; font-weight: 800; }
.fuel-status { min-height: 1.5em; margin: 0; color: var(--color-text-muted, #55706d); }
.fuel-results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; }
.fuel-results--actual { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.fuel-result-card { min-width: 0; padding: 1rem; border: 1px solid var(--color-border, #c8d8d5); border-radius: 14px; background: #fff; }
.fuel-result-card--primary { border-color: #67a89f; background: #f2fbf9; }
.fuel-result-card p { margin: 0; color: var(--color-text-muted, #55706d); font-size: .9rem; font-weight: 700; }
.fuel-result-value { display: block; min-height: 1.7em; margin-top: .5rem; color: var(--color-text, #17322f); font-size: clamp(1.05rem, 2.4vw, 1.35rem); font-weight: 800; line-height: 1.5; overflow-wrap: anywhere; word-break: break-word; }
.fuel-result-card--primary .fuel-result-value { color: var(--color-primary, #146b63); font-size: clamp(1.25rem, 3vw, 1.7rem); }
.fuel-copy { justify-self: start; }
@media (max-width: 700px) { .fuel-field-grid, .fuel-results, .fuel-results--actual { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .fuel-tabs, .fuel-choice-grid { grid-template-columns: 1fr; } .fuel-tab { width: 100%; } }
@media (max-width: 360px) { .fuel-panel { padding-inline: .75rem; } .fuel-panel-heading { align-items: flex-start; flex-direction: column; } .fuel-reset, .fuel-copy { width: 100%; } .fuel-input { padding-inline: .55rem; } }