.fuel-app {
  gap: 20px;
}

.fuel-calc-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: 18px;
  align-items: start;
}

.fuel-controls,
.fuel-results {
  min-width: 0;
}

.fuel-hidden {
  display: none !important;
}

.fuel-mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 20px;
  padding: 5px;
  border: 1px solid var(--c-border);
  border-radius: 9px;
  background: var(--c-bg);
}

.fuel-mode {
  min-width: 0;
  min-height: 67px;
  padding: 8px 6px;
  border: 1px solid transparent;
  border-radius: 7px;
  color: var(--c-muted);
  background: transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: var(--transition);
}

.fuel-mode span {
  font-size: 18px;
  line-height: 1;
}

.fuel-mode strong {
  font-size: 11px;
  line-height: 1.25;
  text-align: center;
}

.fuel-mode:hover {
  color: var(--c-text);
  background: #fff;
}

.fuel-mode.active {
  border-color: rgba(232, 101, 10, .35);
  color: var(--c-accent);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.fuel-type-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
}

.fuel-type {
  min-width: 0;
  padding: 9px 5px;
  border: 1.5px solid var(--c-border);
  border-radius: 7px;
  color: var(--c-muted);
  background: var(--c-bg);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: var(--transition);
}

.fuel-type span {
  font-size: 14px;
}

.fuel-type:hover,
.fuel-type.active {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: rgba(232, 101, 10, .06);
}

.fuel-common-fields {
  margin-top: 18px;
}

.fuel-controls .inp {
  min-height: 42px;
  padding-right: 76px;
}

.fuel-input-unit {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  color: var(--c-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  pointer-events: none;
  white-space: nowrap;
}

.fuel-example-note {
  margin: 0 0 16px;
  color: var(--c-muted);
  font-size: 11px;
  line-height: 1.45;
}

.fuel-mode-panel {
  padding-top: 16px;
  border-top: 1px solid var(--c-border);
}

.fuel-quick-values {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 7px;
}

.fuel-quick-values button {
  padding: 4px 9px;
  border: 1px solid var(--c-border);
  border-radius: 20px;
  color: var(--c-muted);
  background: #fff;
  font-family: var(--font-mono);
  font-size: 10px;
  transition: var(--transition);
}

.fuel-quick-values button:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: rgba(232, 101, 10, .05);
}

.fuel-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  cursor: pointer;
}

.fuel-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.fuel-switch-ui {
  position: relative;
  width: 42px;
  height: 23px;
  flex: 0 0 42px;
  border-radius: 20px;
  background: #c8c8c2;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, .12);
  transition: var(--transition);
}

.fuel-switch-ui::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .22);
  transition: var(--transition);
}

.fuel-switch input:checked + .fuel-switch-ui {
  background: var(--c-accent);
}

.fuel-switch input:checked + .fuel-switch-ui::before {
  transform: translateX(19px);
}

.fuel-switch input:focus-visible + .fuel-switch-ui {
  outline: 3px solid rgba(232, 101, 10, .2);
  outline-offset: 2px;
}

.fuel-switch strong,
.fuel-switch small {
  display: block;
}

.fuel-switch strong {
  color: var(--c-text);
  font-size: 13px;
}

.fuel-switch small {
  margin-top: 1px;
  color: var(--c-muted);
  font-size: 10px;
  line-height: 1.35;
}

.fuel-switch--standalone {
  padding: 12px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  background: var(--c-bg);
}

.fuel-tip-inline {
  margin-top: 2px;
  padding: 11px 12px;
  border-left: 3px solid var(--c-accent);
  border-radius: 0 7px 7px 0;
  color: var(--c-muted);
  background: rgba(232, 101, 10, .05);
  font-size: 12px;
  line-height: 1.55;
}

.fuel-tip-inline strong {
  color: var(--c-text);
}

.fuel-advanced {
  margin-top: 18px;
  border: 1px solid var(--c-border);
  border-radius: 9px;
  background: #fff;
  overflow: hidden;
}

.fuel-advanced summary {
  padding: 12px 14px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.fuel-advanced summary::-webkit-details-marker {
  display: none;
}

.fuel-advanced summary span {
  color: var(--c-text);
  font-size: 13px;
  font-weight: 600;
}

.fuel-advanced summary small {
  color: var(--c-muted);
  font-size: 10px;
}

.fuel-advanced summary::after {
  content: '+';
  color: var(--c-accent);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
}

.fuel-advanced[open] summary::after {
  content: '−';
}

.fuel-advanced-body {
  padding: 14px;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg);
}

.fuel-condition-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 5px;
}

.fuel-condition-grid button {
  min-width: 0;
  padding: 7px 3px;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  color: var(--c-muted);
  background: #fff;
  font-size: 10px;
  line-height: 1.25;
  transition: var(--transition);
}

.fuel-condition-grid button small {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 9px;
}

.fuel-condition-grid button:hover,
.fuel-condition-grid button.active {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: #fff8f3;
}

.fuel-range-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 54px;
  gap: 12px;
  align-items: center;
  margin-top: 12px;
}

.fuel-range-row input[type='range'] {
  width: 100%;
}

.fuel-range-row output {
  padding: 5px 7px;
  border-radius: 6px;
  color: var(--c-accent);
  background: rgba(232, 101, 10, .09);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-align: center;
}

.fuel-results {
  position: sticky;
  top: 76px;
}

.fuel-result-hero {
  position: relative;
  overflow: hidden;
  min-height: 176px;
  padding: 24px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--c-navy), #2c455f);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.fuel-result-hero::after {
  content: '';
  position: absolute;
  right: -48px;
  bottom: -62px;
  width: 170px;
  height: 170px;
  border: 28px solid rgba(255, 255, 255, .045);
  border-radius: 50%;
}

.fuel-result-hero > div:first-child {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.fuel-result-kicker {
  display: block;
  margin-bottom: 7px;
  color: rgba(255, 255, 255, .58);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .7px;
  text-transform: uppercase;
}

.fuel-result-hero strong {
  display: block;
  color: var(--c-accent);
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.08;
  word-break: break-word;
}

.fuel-result-hero small {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, .64);
  font-size: 12px;
  line-height: 1.45;
}

.fuel-gauge {
  position: relative;
  z-index: 1;
  flex: 0 0 122px;
}

.fuel-gauge-ring {
  width: 122px;
  height: 122px;
  border: 10px solid var(--c-accent);
  border-right-color: rgba(255, 255, 255, .16);
  border-radius: 50%;
  background: rgba(255, 255, 255, .04);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.fuel-gauge-ring span {
  max-width: 92px;
  overflow: hidden;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fuel-gauge-ring small {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, .55);
  font-size: 10px;
}

.fuel-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 12px;
}

.fuel-stat {
  min-width: 0;
  padding: 12px 13px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  background: var(--c-bg);
}

.fuel-stat span,
.fuel-stat strong {
  display: block;
}

.fuel-stat span {
  margin-bottom: 4px;
  color: var(--c-muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .45px;
  text-transform: uppercase;
}

.fuel-stat strong {
  overflow: hidden;
  color: var(--c-text);
  font-family: var(--font-mono);
  font-size: 15px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fuel-compare {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid var(--c-border);
  border-radius: 9px;
  background: #fff;
}

.fuel-compare-content {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, .8fr)) minmax(0, 1.15fr);
  gap: 12px;
  align-items: end;
  margin-top: 13px;
  padding-top: 13px;
  border-top: 1px solid var(--c-border);
}

.fuel-compare-content .field {
  margin: 0;
}

.fuel-saving-result {
  padding: 10px 12px;
  border: 1px solid #b9e7d2;
  border-radius: 8px;
  background: #f0fbf6;
}

.fuel-saving-result span,
.fuel-saving-result strong,
.fuel-saving-result small {
  display: block;
}

.fuel-saving-result span {
  color: var(--c-muted);
  font-size: 10px;
}

.fuel-saving-result strong {
  margin-top: 3px;
  color: var(--c-green);
  font-family: var(--font-mono);
  font-size: 13px;
}

.fuel-saving-result small {
  margin-top: 2px;
  color: var(--c-muted);
  font-size: 10px;
}

.fuel-result-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 13px;
}

.fuel-copy-btn,
.fuel-reset-btn {
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 7px;
  font-size: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transition: var(--transition);
}

.fuel-copy-btn {
  border: 0;
  color: #fff;
  background: var(--c-accent);
}

.fuel-copy-btn:hover {
  background: var(--c-accent-h);
}

.fuel-reset-btn {
  border: 1px solid var(--c-border);
  color: var(--c-muted);
  background: #fff;
}

.fuel-reset-btn:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.fuel-copy-status {
  color: var(--c-green);
  font-size: 11px;
  font-weight: 600;
}

.fuel-distance-panel {
  padding: 0;
  overflow: hidden;
}

.fuel-section-heading {
  padding: 18px 20px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.fuel-section-heading h2 {
  color: var(--c-navy);
  font-size: 17px;
  font-weight: 600;
}

.fuel-section-heading p {
  margin-top: 3px;
  color: var(--c-muted);
  font-size: 12px;
}

.fuel-price-link {
  display: inline-flex;
  flex-shrink: 0;
  margin: -8px 0 16px;
  padding: 6px 9px;
  border: 1px solid rgba(232, 101, 10, .28);
  border-radius: 6px;
  color: var(--c-accent);
  background: rgba(232, 101, 10, .05);
  font-size: 11px;
  font-weight: 600;
}

.fuel-price-link:hover {
  border-color: var(--c-accent);
  background: rgba(232, 101, 10, .1);
}

.fuel-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.fuel-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.fuel-table th,
.fuel-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--c-border);
  text-align: right;
}

.fuel-table th:first-child,
.fuel-table td:first-child {
  text-align: left;
}

.fuel-table th {
  color: var(--c-muted);
  background: var(--c-bg);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .55px;
  text-transform: uppercase;
}

.fuel-table td {
  color: var(--c-text);
  font-family: var(--font-mono);
  font-size: 12px;
}

.fuel-table--distance td:nth-child(3),
.fuel-table--speed td:nth-child(5) {
  color: var(--c-accent);
  font-weight: 700;
}

.fuel-table--speed {
  min-width: 760px;
}

.fuel-table--speed td:first-child strong,
.fuel-table--speed td:first-child small {
  display: block;
}

.fuel-table--speed td:first-child strong {
  color: var(--c-navy);
  font-size: 13px;
}

.fuel-table--speed td:first-child small {
  margin-top: 2px;
  color: var(--c-green);
  font-family: var(--font-main);
  font-size: 9px;
  font-weight: 600;
}

.fuel-table--speed .fuel-speed-best td {
  background: #f2fbf6;
}

.fuel-table--speed .fuel-speed-reference td {
  background: #fffaf6;
}

.fuel-table tbody tr:last-child td {
  border-bottom: 0;
}

.fuel-table tbody tr:hover td {
  background: #fffaf6;
}

.fuel-estimate-note {
  padding: 13px 20px 15px;
  border-top: 1px solid var(--c-border);
  color: var(--c-muted);
  background: rgba(232, 101, 10, .035);
  font-size: 11px;
  line-height: 1.55;
}

.fuel-estimate-note strong {
  color: var(--c-text);
}

.fuel-formula-note {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border: 1px dashed #cccac2;
  border-radius: 8px;
  color: var(--c-muted);
  background: rgba(255, 255, 255, .55);
  font-size: 12px;
  line-height: 1.55;
}

.fuel-formula-note > div {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border-radius: 8px;
  color: var(--c-accent);
  background: rgba(232, 101, 10, .09);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fuel-formula-note strong {
  color: var(--c-text);
}

.seo-content a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

@media (max-width: 1020px) {
  .fuel-calc-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .fuel-results {
    position: static;
  }

  .fuel-condition-grid {
    grid-template-columns: repeat(5, minmax(90px, 1fr));
    overflow-x: auto;
    padding-bottom: 3px;
  }
}

@media (max-width: 640px) {
  .fuel-app {
    padding-inline: 10px;
  }

  .fuel-controls,
  .fuel-results {
    padding: 16px;
  }

  .fuel-mode-tabs {
    gap: 4px;
    padding: 4px;
  }

  .fuel-mode {
    min-height: 62px;
    padding-inline: 3px;
  }

  .fuel-mode strong {
    font-size: 10px;
  }

  .fuel-type-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fuel-common-fields,
  .fuel-mode-panel .field-grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .fuel-result-hero {
    min-height: 164px;
    padding: 20px;
  }

  .fuel-gauge {
    flex-basis: 98px;
  }

  .fuel-gauge-ring {
    width: 98px;
    height: 98px;
    border-width: 8px;
  }

  .fuel-gauge-ring span {
    max-width: 72px;
    font-size: 15px;
  }

  .fuel-compare-content {
    grid-template-columns: minmax(0, 1fr);
  }

  .fuel-section-heading {
    padding: 16px;
    flex-direction: column;
  }

  .fuel-estimate-note {
    padding-inline: 16px;
  }
}

@media (max-width: 430px) {
  .fuel-result-hero {
    align-items: flex-start;
    flex-direction: column;
  }

  .fuel-gauge {
    position: absolute;
    top: 20px;
    right: 18px;
    opacity: .22;
  }

  .fuel-result-hero > div:first-child {
    padding-right: 52px;
  }

  .fuel-result-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .fuel-copy-status {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fuel-mode,
  .fuel-type,
  .fuel-switch-ui,
  .fuel-switch-ui::before {
    transition: none;
  }
}