@layer pages {
  /* ================================================================ Page head
     Same pattern as contacts and legal pages: breadcrumbs, condensed display title, serif lead. */
  .page-head {
    padding-top: var(--space-l);
  }

  .page-head__title {
    margin-top: var(--space-m);
  }

  .page-head__lead {
    max-width: 44ch;
    margin-top: var(--space-s);
  }

  /* ================================================================ Calculator */
  .calc {
    margin-top: var(--space-xl);
  }

  .calc__sizes {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-m);
  }

  .calc-box {
    min-width: 0;
    margin: 0;
    padding: var(--space-l);
    border: 0;
    border-radius: var(--r-l);
    background: var(--surface-2);
  }

  /* Legend as a normal block inside the padded panel */
  .calc-box__title {
    float: left;
    width: 100%;
    padding: 0;
  }

  .calc-box__title + * {
    clear: both;
  }

  .calc-box__selects {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: end;
    gap: var(--space-2xs);
    padding-top: var(--space-m);
  }

  .calc-box__delimiter {
    display: grid;
    place-items: center;
    height: 3rem;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--ink-3);
  }

  .calc-box__select {
    font-size: 1.125rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums lining-nums;
  }

  /* ---------------------------------------------------------------- Tyre drawing
     Geometry comes from calculator.js (ported legacy maths). --m is the drawing height in px
     (the bigger tyre's outer diameter), --top the space reserved above it for labels. */
  .tire-viz {
    --m: 200;
    --top: 20;
    --label-gutter: 2.75rem;
    margin-top: var(--space-l);
    visibility: hidden;
  }

  .tire-viz[data-ready] {
    visibility: visible;
  }

  .tire-viz__canvas {
    position: relative;
    width: calc(var(--label-gutter) + var(--m) * 1.72px);
    max-width: 100%;
    height: calc((var(--m) + var(--top)) * 1px + 1rem);
    margin-inline: auto;
  }

  /* Ground line: both tyres stand on it, so the diameter difference reads at a glance */
  .tire-viz__canvas::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 1px;
    background: var(--line-3);
  }

  .tire-viz__front,
  .tire-viz__side {
    position: absolute;
    bottom: 0;
    height: calc(var(--m) * 1px);
  }

  .tire-viz__front {
    left: var(--label-gutter);
    width: calc(var(--m) * 0.5px);
  }

  .tire-viz__side {
    left: calc(var(--label-gutter) + var(--m) * 0.72px);
    width: calc(var(--m) * 1px);
  }

  .tire-viz__part {
    position: absolute;
    top: 0;
    left: 0;
    width: calc(var(--m) * 1px);
    max-width: none;
    height: calc(var(--m) * 1px);
    transform-origin: 0 0;
    user-select: none;
    will-change: transform; /* scales stay ≤ 1, so a pre-rastered layer stays sharp and never flashes */
  }

  /* Dimension marks: a line with end ticks and a value chip. JS moves the mark with
     transform and sets --len (line length) and --tick (tick length) in px. */
  .dim {
    --len: 0;
    --tick: 0;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    pointer-events: none;
  }

  .dim__line,
  .dim__tick {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    background: var(--blue);
    box-shadow: 0 0 0 1px rgb(255 255 255 / 0.6);
  }

  .dim--h .dim__line,
  .dim--v .dim__tick {
    width: 100px;
    height: 2px;
    margin-top: -1px;
    transform-origin: 0 50%;
  }

  .dim--v .dim__line,
  .dim--h .dim__tick {
    width: 2px;
    height: 100px;
    margin-left: -1px;
    transform-origin: 50% 0;
  }

  .dim--h .dim__line {
    transform: scaleX(calc(var(--len) / 100));
  }

  .dim--h .dim__tick {
    transform: scaleY(calc(var(--tick) / 100));
  }

  .dim--h .dim__tick--end {
    transform: translateX(calc(var(--len) * 1px)) scaleY(calc(var(--tick) / 100));
  }

  .dim--v .dim__line {
    transform: scaleY(calc(var(--len) / 100));
  }

  .dim--v .dim__tick {
    transform: scaleX(calc(var(--tick) / 100));
  }

  .dim--v .dim__tick--end {
    transform: translateY(calc(var(--len) * 1px)) scaleX(calc(var(--tick) / 100));
  }

  .dim__value {
    position: absolute;
    top: 0;
    left: 0;
    display: inline-flex;
    align-items: baseline;
    gap: 0.25em;
    padding: 0.0625rem 0.375rem;
    border-radius: var(--r-xs);
    background: var(--surface);
    color: var(--navy);
    box-shadow: 0 0 0 1px var(--line-2), 0 1px 3px rgb(11 29 69 / 0.16);
    font-size: 0.8125rem;
    font-weight: 700;
    line-height: 1.25rem;
    white-space: nowrap;
    font-variant-numeric: tabular-nums lining-nums;
  }

  .dim__key {
    color: var(--blue);
    font-size: 0.6875rem;
    font-weight: 900;
  }

  .dim--h .dim__value {
    transform: translate(calc(var(--len) * 0.5px - 50%), -50%);
  }

  .dim--outer .dim__value {
    transform: translate(-50%, calc(var(--len) * 0.5px - 50%)) rotate(-90deg);
  }

  .dim--profile .dim__value {
    transform: translate(calc(var(--tick) * 0.5px - 50%), calc(var(--len) * 0.5px - 50%));
  }

  /* Values change after the move (legacy 600ms reveal) */
  .dim[data-pending] .dim__value {
    opacity: 0;
  }

  .tire-viz[data-animate] :is(.tire-viz__part, .dim, .dim__line, .dim__tick, .dim__value) {
    transition:
      transform 600ms var(--ease-in-out),
      opacity var(--dur-fast) ease;
  }

  @media (prefers-reduced-motion: reduce) {
    .tire-viz[data-animate] :is(.tire-viz__part, .dim, .dim__line, .dim__tick, .dim__value) {
      transition: opacity var(--dur-fast) ease;
    }
  }

  /* ---------------------------------------------------------------- Results
     The size table and the speedometer panel always share one height. */
  .calc-results {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: stretch;
    gap: var(--space-m);
    margin-top: var(--space-m);
  }

  .calc-panel {
    min-width: 0;
    padding: var(--space-l);
    border-radius: var(--r-l);
    background: var(--surface-2);
  }

  .calc-panel__title {
    margin-bottom: var(--space-s);
  }

  .calc-table-wrap {
    overflow-x: auto;
  }

  .calc-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.375rem;
    font-variant-numeric: tabular-nums lining-nums;
  }

  .calc-table th,
  .calc-table td {
    padding: 0.8125rem 1rem;
    text-align: right;
    white-space: nowrap;
  }

  .calc-table thead th {
    padding-block: 0 0.125rem;
    font-size: var(--fs-small);
    font-weight: 700;
    color: var(--ink-2);
  }

  .calc-table thead th:first-child,
  .calc-table tbody th {
    text-align: left;
  }

  .calc-table tbody > tr > * {
    background: var(--surface);
  }

  .calc-table tbody > tr > :first-child {
    border-radius: var(--r-s) 0 0 var(--r-s);
  }

  .calc-table tbody > tr > :last-child {
    border-radius: 0 var(--r-s) var(--r-s) 0;
  }

  .calc-table tbody th {
    font-weight: 600;
    white-space: normal;
  }

  .calc-table td {
    min-width: 4.5rem;
    font-size: var(--fs-body-l);
    font-weight: 700;
  }

  .calc-table__key {
    display: inline-grid;
    place-items: center;
    width: 1.5rem;
    height: 1.5rem;
    margin-right: 0.625rem;
    border-radius: var(--r-xs);
    background: var(--blue-soft);
    color: var(--blue-press);
    font-size: var(--fs-xs);
    font-weight: 900;
    line-height: 1;
  }

  .calc-speed__input {
    max-width: 12rem;
    font-size: 1.125rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums lining-nums;
  }

  .calc-speed__list {
    display: grid;
    gap: 0.375rem;
    margin-top: var(--space-m);
  }

  .calc-speed__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-s);
    min-height: 3.25rem;
    padding: 0.625rem 1rem;
    border-radius: var(--r-s);
    background: var(--surface);
  }

  .calc-speed__row dt {
    font-weight: 600;
  }

  .calc-speed__row dd {
    margin: 0;
    font-size: var(--fs-body-l);
    font-weight: 700;
    white-space: nowrap;
    font-variant-numeric: tabular-nums lining-nums;
  }

  /* ================================================================ Calculator FAQ */
  .calc-about__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(17rem, 22rem);
    align-items: start;
    gap: var(--space-xl) var(--space-3xl);
  }

  .calc-faq__title {
    margin-bottom: var(--space-l);
  }

  .calc-faq h3 {
    font-size: inherit;
  }

  .calc-next {
    position: sticky;
    top: calc(var(--nav-h) + var(--space-l));
    display: grid;
    justify-items: start;
    gap: var(--space-s);
    padding: var(--space-l);
    border-radius: var(--r-l);
    background: var(--navy);
    color: #fff;
  }

  .calc-next__text {
    color: var(--ink-on-dark-2);
  }

  .calc-next__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2xs) var(--space-m);
    margin-top: var(--space-2xs);
  }

  .calc-next .link-cta {
    color: #fff;
  }

  /* ================================================================ Responsive */
  @media (max-width: 64rem) {
    .calc-results,
    .calc-about__inner {
      grid-template-columns: minmax(0, 1fr);
    }

    .calc-next {
      position: static;
    }
  }

  @media (max-width: 56rem) {
    .calc__sizes {
      grid-template-columns: minmax(0, 1fr);
    }
  }

  @media (max-width: 36rem) {
    .calc {
      margin-top: var(--space-l);
    }

    .calc-box,
    .calc-panel,
    .calc-next {
      padding: var(--space-m) var(--space-s);
    }

    .calc-box__select {
      padding-left: 0.625rem;
      padding-right: 2rem;
      background-position: right 0.5rem center;
    }

    .calc-table th,
    .calc-table td {
      padding: 0.6875rem 0.5rem;
    }

    .calc-table td {
      min-width: 3.25rem;
      font-size: 1rem;
    }

    .calc-table thead th {
      font-size: var(--fs-xs);
    }

    .calc-table__key {
      width: 1.25rem;
      height: 1.25rem;
      margin-right: 0.375rem;
    }

    .calc-speed__row {
      padding-inline: 0.75rem;
    }

    .dim__value {
      padding-inline: 0.25rem;
      font-size: 0.75rem;
    }
  }
}