.calculator-mode-selector {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
}

.calculator-mode-option {
  cursor: pointer;
  margin: 0;
}

.calculator-mode-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calculator-mode-option span {
  display: flex;
  min-height: 76px;
  flex-direction: column;
  justify-content: center;
  padding: .85rem 1rem;
  border: 2px solid var(--bs-border-color);
  border-radius: .75rem;
  background: var(--bs-body-bg);
  text-align: center;
}

.calculator-mode-option small {
  color: var(--bs-secondary-color);
}

.calculator-mode-option input:checked + span {
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 .2rem rgba(var(--bs-primary-rgb), .12);
}

.calculator-mode-option input:focus-visible + span {
  outline: 3px solid rgba(var(--bs-primary-rgb), .3);
  outline-offset: 2px;
}

.calculator-value-unit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(130px, .55fr);
  gap: .75rem;
}

.structured-duration-fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.structured-duration-input {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: start;
  gap: .25rem;
  width: min(100%, 22rem);
}

.structured-duration-input--short {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  width: min(100%, 14.5rem);
}

.structured-duration-part {
  min-width: 0;
}

.structured-duration-separator {
  align-self: end;
  padding-bottom: .72rem;
  color: var(--bs-secondary-color);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
}

.structured-duration-input .form-label {
  margin-bottom: .2rem;
  color: var(--bs-secondary-color);
  font-size: .8rem;
}

.calculator-primary-result {
  padding: 1.5rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--bs-primary), #f97316);
  color: #fff;
  text-align: center;
}

.calculator-primary-result span,
.calculator-primary-result strong {
  display: block;
}

.calculator-primary-result span {
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.calculator-primary-result strong {
  margin-top: .35rem;
  font-size: clamp(2.25rem, 8vw, 4rem);
  line-height: 1.05;
}

.calculator-interpretation {
  margin: 1.25rem 0;
  text-align: center;
  color: var(--bs-secondary-color);
}

.calculator-secondary-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin: 0;
}

.calculator-secondary-results div {
  padding: 1rem;
  border: 1px solid var(--bs-border-color);
  border-radius: .75rem;
}

.calculator-secondary-results dt {
  color: var(--bs-secondary-color);
  font-size: .8rem;
}

.calculator-secondary-results dd {
  margin: .25rem 0 0;
  font-size: 1.15rem;
  font-weight: 700;
}

@media (max-width: 575.98px) {
  .calculator-mode-selector,
  .calculator-secondary-results {
    grid-template-columns: 1fr;
  }

  .calculator-mode-option span {
    min-height: 62px;
  }

  .calculator-value-unit {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 259.98px) {
  .structured-duration-input,
  .structured-duration-input--short {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .structured-duration-separator {
    display: none;
  }
}

.calculator-strategy-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .5rem;
}

.calculator-strategy-options label { margin: 0; cursor: pointer; }
.calculator-strategy-options input { position: absolute; opacity: 0; pointer-events: none; }
.calculator-strategy-options span { display: block; padding: .75rem .5rem; border: 2px solid var(--bs-border-color); border-radius: .65rem; text-align: center; font-weight: 700; }
.calculator-strategy-options input:checked + span { border-color: var(--bs-primary); background: rgba(var(--bs-primary-rgb), .08); }
.calculator-strategy-options input:focus-visible + span { outline: 3px solid rgba(var(--bs-primary-rgb), .3); outline-offset: 2px; }
.race-half-card { display: flex; flex-direction: column; padding: 1rem; border-radius: .75rem; background: var(--bs-tertiary-bg); }
.race-half-card span { font-size: 1.35rem; font-weight: 800; }
.race-half-card small { color: var(--bs-secondary-color); }
.race-splits-table { margin-top: 1.25rem; }
.race-splits-table th, .race-splits-table td { white-space: nowrap; }

@media (max-width: 575.98px) {
  .calculator-strategy-options { grid-template-columns: 1fr; }
  .race-splits-table { font-size: .9rem; }
}