/* Legacy layout and paint share one cascade layer. Theme recipes own opt-in appearance. */
@layer legacy {
  :root {
    color-scheme: dark;
    font-family: var(--fk-font-ui, sans-serif);
    color: #f3eee2;
    background: #091824;
  }
  * {
    box-sizing: border-box;
  }
  body {
    margin: 0;
    padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px)
      env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
  }
  header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 4vw;
    border-bottom: 1px solid #284553;
    font-size: 12px;
    letter-spacing: 0.08em;
  }
  a {
    color: #a4d8d0;
    text-decoration-thickness: 1px;
    text-underline-offset: 4px;
  }
  header a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
  #load-status {
    position: sticky;
    top: env(safe-area-inset-top, 0px);
    z-index: 10;
  }
  main {
    max-width: 1780px;
    margin: auto;
    padding: 26px 4vw 40px;
  }
  h1 {
    margin: 8px 0;
    font-size: clamp(28px, 3.6vw, 46px);
    line-height: 1.12;
  }
  p {
    line-height: 1.5;
  }
  .intro {
    max-width: 880px;
  }
  .eyebrow,
  .stage-heading {
    color: #91b7b4;
    font-size: 11px;
    letter-spacing: 0.1em;
  }
  .setup {
    display: flex;
    align-items: end;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
  }
  label {
    display: grid;
    gap: 7px;
    font-size: 12px;
    color: #b3ccc9;
  }
  button,
  select,
  input {
    min-height: 44px;
    border: 1px solid #48606a;
    background: #18323e;
    color: #f3eee2;
    padding: 10px 12px;
    font: inherit;
    border-radius: 5px;
  }
  select {
    max-width: 100%;
  }
  button {
    cursor: pointer;
    font-size: 13px;
    touch-action: manipulation;
  }
  button:hover:not(:disabled) {
    background: #294855;
  }
  button:disabled {
    opacity: 0.45;
    cursor: default;
  }
  button[aria-pressed='true'] {
    color: #0a2230;
    background: #e5c976;
    border-color: #e5c976;
  }
  :focus-visible {
    outline: 3px solid #f1d78a;
    outline-offset: 3px;
  }
  #load,
  #connect {
    background: #d9c782;
    color: #172a31;
    border-color: #d9c782;
  }
  .notice {
    padding: 12px;
    border-left: 3px solid #83b4b2;
    background: #112732;
    min-height: 48px;
    font-size: 13px;
  }
  .notice.error {
    border-color: #ef937b;
  }
  .lab-grid {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
    gap: 22px;
  }
  aside {
    padding: 16px;
    background: #102530;
    border: 1px solid #294954;
    border-radius: 8px;
  }
  .connection {
    display: grid;
    gap: 8px;
  }
  #connection-status,
  .guide,
  .footer-note {
    font-size: 12px;
    color: #acc2c3;
  }
  .dpad {
    display: grid;
    grid-template-columns: repeat(3, 52px);
    grid-template-rows: repeat(2, 56px);
    gap: 5px;
    justify-content: center;
    margin: 18px 0;
  }
  .dpad button {
    display: grid;
    align-content: center;
    gap: 2px;
    padding: 4px;
  }
  .dpad b {
    font-size: 22px;
    line-height: 1;
  }
  .dpad span {
    font-size: 10px;
  }
  .up {
    grid-column: 2;
  }
  .left {
    grid-column: 1;
    grid-row: 2;
  }
  .down {
    grid-column: 2;
    grid-row: 2;
  }
  .right {
    grid-column: 3;
    grid-row: 2;
  }
  .face-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 7px;
  }
  .face-buttons button {
    display: grid;
    gap: 5px;
    padding-inline: 5px;
  }
  .face-buttons b {
    font-size: 13px;
  }
  .face-buttons span {
    font-size: 10px;
  }
  .wide {
    width: 100%;
    margin-top: 10px;
  }
  .sticks {
    min-width: 0;
    margin: 18px 0 0;
    padding: 12px;
    border: 1px solid #48606a;
    border-radius: 5px;
  }
  .sticks legend {
    font-size: 12px;
    color: #b3ccc9;
  }
  .axis-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }
  .axis-label label {
    font-size: 11px;
  }
  .axis-label output {
    font-size: 12px;
    font-variant-numeric: tabular-nums;
  }
  .sticks input[type='range'] {
    display: block;
    width: 100%;
    margin: 0 0 8px;
    padding: 0;
    accent-color: #e5c976;
  }
  #axis-status {
    min-height: 54px;
    margin-bottom: 0;
  }
  .feedback {
    margin-top: 20px;
    border-top: 1px solid #34505b;
    padding-top: 12px;
    font-size: 12px;
    overflow-wrap: anywhere;
  }
  .feedback dt {
    color: #88a9b0;
    margin-top: 10px;
  }
  .feedback dd {
    margin: 5px 0;
    min-height: 16px;
  }
  .stage {
    min-width: 0;
    border: 1px solid #375661;
    background: #070f17;
    border-radius: 8px;
    overflow: hidden;
  }
  .stage-heading {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    padding: 12px;
  }
  #frame-space {
    position: relative;
    width: 100%;
    overflow: hidden;
    min-height: 120px;
  }
  iframe {
    display: block;
    width: 1280px;
    height: 720px;
    border: 0;
    transform-origin: top left;
    background: #091324;
  }
  .footer-note {
    max-width: 920px;
  }
  @media (max-width: 750px) {
    main {
      padding-inline: 14px;
    }
    .lab-grid {
      grid-template-columns: 1fr;
    }
    .stage {
      grid-row: 1;
    }
    aside {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
      gap: 12px;
    }
    aside > .guide,
    aside > .feedback,
    aside > .sticks {
      grid-column: 1 / -1;
    }
    .dpad {
      margin: 0;
      align-self: center;
    }
    .connection,
    .face-buttons {
      align-self: start;
    }
    #connection-status {
      align-self: center;
    }
    .wide {
      margin: 0;
    }
  }

  /* Host reading policy must not alter the practice iframe or virtual input values. */
  body.field-kit.field-kit-support[data-field-kit-page='controller']
    :is(h1, p, dt, dd, label, legend, button, a, .stage-heading) {
    overflow-wrap: anywhere;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller']
    :is(button, select, input, .setup > label, .connection, .face-buttons) {
    min-inline-size: 0;
    max-inline-size: 100%;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] :is(button, select) {
    white-space: normal;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] a {
    display: inline-flex;
    align-items: center;
    min-block-size: 44px;
    max-inline-size: 100%;
    font-family: var(--fk-font-ui);
    font-size: var(--fk-text-control);
    font-weight: 500;
    line-height: var(--fk-leading-control);
    letter-spacing: normal;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] :is(label, legend) {
    font-weight: 500;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller']
    :is(#connection-status, .feedback dd, .operation-status) {
    font-family: var(--fk-font-ui);
    font-size: var(--fk-text-control);
    font-weight: 400;
    line-height: var(--fk-leading-body);
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] #host-display-notice {
    font-family: var(--fk-font-ui);
    font-size: var(--fk-text-secondary);
    font-weight: 400;
    line-height: var(--fk-leading-body);
    overflow-wrap: anywhere;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller']
    :is(.axis-label output, #viewport-readout, .operation-status-count) {
    font-family: var(--fk-font-mono);
    font-size: var(--fk-text-control);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    letter-spacing: normal;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller']
    :is(.dpad span, .face-buttons span) {
    font-family: var(--fk-font-mono);
    font-size: var(--fk-text-secondary);
    font-weight: 500;
    line-height: var(--fk-leading-body);
    letter-spacing: normal;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] .dpad {
    grid-template-rows: repeat(2, minmax(64px, auto));
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] .dpad button {
    padding: 4px;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] .face-buttons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] .face-buttons button {
    padding-inline: 5px;
  }
  body.field-kit.field-kit-support[data-field-kit-page='controller'] .axis-label {
    flex-wrap: wrap;
  }
  @media (max-width: 600px) {
    body.field-kit.field-kit-support[data-field-kit-page='controller'] aside {
      grid-template-columns: minmax(0, 1fr);
    }
    body.field-kit.field-kit-support[data-field-kit-page='controller'] .setup > label {
      flex: 1 1 100%;
      max-width: 100%;
    }
  }
}