/* A code-rendered explanatory diagram; the game remains the physics solver. */
.setup-lab { margin-top: 64px; color: #f4f3ee; font-family: var(--ui-font); }
.setup-lab [hidden] { display: none !important; }
.setup-lab-heading { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 32px; }
.setup-lab-heading .cinema-kicker { color: #ddeb9c; margin-bottom: 14px; }
.setup-lab-heading h3 { font: 650 clamp(32px, 3.5vw, 52px)/1.05 var(--display); letter-spacing: -.035em; }

.setup-lab-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px 24px; background: #18201e; border: 1px solid #39423d; border-radius: 24px 24px 0 0; }
.setup-mode { display: flex; gap: 6px; min-width: 0; }
.setup-mode button { position: relative; border: 0; background: transparent; color: #b5c2b9; padding: 14px 16px; min-height: 48px; border-radius: 8px 8px 0 0; font: 550 14px/1.3 var(--ui-font); cursor: pointer; transition: color 150ms, background-color 150ms; }
.setup-mode button::after { content: ""; position: absolute; inset: auto 16px 0; height: 2px; border-radius: 2px; background: transparent; }
.setup-mode button[aria-pressed="true"] { color: #e5f2b7; background: #ddeb9c09; }
.setup-mode button[aria-pressed="true"]::after { background: #ddeb9c; }
.setup-car-label { display: flex; align-items: center; gap: 12px; font-size: 13px; color: #bbc8c0; }
.setup-lab-workbench { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, 1fr); border: 1px solid #39423d; border-top: 0; border-radius: 0 0 24px 24px; overflow: hidden; background: #121a16; }
.setup-visual { min-width: 0; display: flex; flex-direction: column; padding: 28px 24px 22px; background: radial-gradient(ellipse at 50% 35%, #243129, #111a16 75%); }
.setup-visual-header { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: #d2dcd5; font: 500 13px/1.5 var(--ui-font); }
.setup-legend { display: flex; align-items: center; gap: 7px; color: #aab9af; font-size: 12px; }
.setup-legend i { width: 25px; border-top: 2px dashed #aab9af; }
.setup-diagram { display: block; width: 100%; height: auto; flex: 1; min-height: 240px; overflow: visible; }
.setup-diagram text { fill: #b5c5bb; font: 500 20px var(--ui-font); letter-spacing: 1px; }
.setup-diagram .setup-diagram-value { fill: #e5f2b7; font: 600 28px var(--ui-font); letter-spacing: -.5px; }
.setup-readouts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding-top: 20px; border-top: 1px solid #3c4a40; }
.setup-readouts > div { display: grid; gap: 8px; }
.setup-readouts span { color: #b1c0b6; font-size: 12px; line-height: 1.5; }
.setup-readouts strong { color: #e5f2b7; font-size: clamp(23px, 2.6vw, 36px); font-weight: 500; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.setup-illustration-note { margin-top: 22px; color: #aab9af; font-size: 12px; line-height: 1.5; }
.setup-controls { padding: 28px; border-left: 1px solid #39423d; background: #1a231e; }
.setup-controls fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.setup-controls legend { padding: 0; margin-bottom: 24px; font-size: 18px; font-weight: 600; }
.setup-control + .setup-control { margin-top: 25px; }
.setup-control > div:first-child { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.setup-control label { font-size: 14px; font-weight: 550; }
.setup-control output { color: #e5f2b7; font: 600 17px var(--ui-font); font-variant-numeric: tabular-nums; white-space: nowrap; }
.setup-control input[type="range"] { appearance: none; -webkit-appearance: none; display: block; width: 100%; height: 44px; margin: 8px 0 0; padding: 0; background: transparent; cursor: pointer; border: 0; border-radius: 10px; accent-color: #ddeb9c; }
.setup-control input[type="range"]::-webkit-slider-runnable-track { height: 5px; background: #63766a; border-radius: 99px; }
.setup-control input[type="range"]::-moz-range-track { height: 5px; background: #63766a; border-radius: 99px; }
.setup-control input[type="range"]::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 23px; height: 23px; margin-top: -9px; border: 3px solid #ddeb9c; border-radius: 50%; background: #17251c; box-shadow: 0 0 0 4px #ddeb9c14; }
.setup-control input[type="range"]::-moz-range-thumb { width: 19px; height: 19px; border: 3px solid #ddeb9c; border-radius: 50%; background: #17251c; }
.setup-range-ends { display: flex; justify-content: space-between; color: #b7c5bb; font-size: 11px; font-variant-numeric: tabular-nums; }
.setup-control > p { margin-top: 9px; font-size: 13px; line-height: 1.5; color: #bac7be; }
.setup-response { margin-top: 26px; padding: 18px; border-radius: 16px; background: #26352b; border: 1px solid #4c614f; }
.setup-response-label { color: #ddeb9c; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.setup-response h4 { margin-top: 9px; font: 600 18px/1.3 var(--ui-font); letter-spacing: -.02em; }
.setup-response > p:last-child { margin-top: 9px; color: #c7d2c9; font-size: 13px; line-height: 1.6; }
.setup-reset { display: flex; justify-content: space-between; align-items: center; gap: 12px; width: 100%; min-height: 44px; margin-top: 17px; padding: 10px 2px; color: #e1e9e2; background: transparent; border: 0; font: 500 13px var(--ui-font); cursor: pointer; }
.setup-reset span { font-size: 22px; }
.setup-lab-footer { display: flex; align-items: start; justify-content: space-between; gap: 24px; padding-top: 20px; color: #aebdb3; font-size: 12px; line-height: 1.6; }
.setup-lab-footer p { max-width: 66ch; }
.setup-lab-footer a { color: #ddeb9c; padding-block: 8px; flex-shrink: 0; text-decoration: underline; text-underline-offset: 4px; }
.setup-lab :is(button, select, input):focus-visible { outline: 2px solid #f0ffba; outline-offset: 4px; }
.setup-lab :disabled { cursor: default; opacity: .6; }
.setup-noscript { margin-top: 20px; color: #d5dfd6; }
@media (max-width: 1000px) {
 .setup-lab-workbench { grid-template-columns: 1fr; }
 .setup-controls { border-left: 0; border-top: 1px solid #39423d; }
 .setup-diagram { max-height: 360px; }
 .setup-controls fieldset { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
 .setup-control + .setup-control { margin-top: 0; }
 .setup-lab-heading { align-items: start; }
}
@media (max-width: 700px) {
 .setup-lab { margin-top: 42px; }
 .setup-lab-heading { display: block; }

 .setup-lab-toolbar { align-items: stretch; flex-direction: column; padding: 16px; border-radius: 18px 18px 0 0; gap: 16px; }
 .setup-mode button { flex: 1; }
 .setup-car-label { justify-content: space-between; }
 .setup-lab-workbench { border-radius: 0 0 18px 18px; }
 .setup-visual { padding: 20px 14px; }
 .setup-diagram { min-height: 180px; }
 .setup-readouts { gap: 10px; }
 .setup-controls { padding: 22px 18px; }
 .setup-controls fieldset { display: block; }
 .setup-control + .setup-control { margin-top: 24px; }
 .setup-lab-footer { flex-direction: column; gap: 8px; }
}
@media (forced-colors: active) {
 .setup-mode button[aria-pressed="true"], .setup-response { border: 1px solid Highlight; }
 .setup-control input[type="range"] { appearance: auto; }
 .setup-diagram { forced-color-adjust: none; }
}

/* Studio renders from the game meshes; responsive controls stay within the panel. */
.setup-model-caption { margin: 0 0 22px; color: #b1c0b6; font-size: 11px; letter-spacing: .02em; }
.setup-brake-guide { display: flex; align-items: center; gap: 16px; padding: 24px 0; color: #bac7be; font-size: 14px; line-height: 1.6; }
.setup-brake-guide > span { color: #f6ad6d; font-size: 34px; }
.setup-lab[data-setup-topic="brakes"] .setup-legend i { border-top-style: solid; border-color: #f6ad6d; }
.setup-lab[data-setup-topic="pressure"] .setup-legend i { border-top-style: solid; border-color: #ddeb9c; }
@media (max-width: 700px) {
 .setup-mode { min-width: 0; }
 .setup-mode button { min-width: 0; white-space: normal; }
 .setup-diagram { min-height: 155px; }
 .setup-diagram text { font-size: 23px; }
 .setup-diagram .setup-diagram-value { font-size: 31px; }
 .setup-model-caption { font-size: 10px; margin-bottom: 16px; }
}

/* Visible native radio choices match the site and avoid an OS-styled popup. */
.setup-car-options { display: flex; gap: 3px; border: 1px solid #445249; border-radius: 12px; padding: 3px; background: #101713; }
.setup-car-options label { position: relative; cursor: pointer; }
.setup-car-options input { appearance: none; position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.setup-car-options span { display: block; min-width: 78px; padding: 11px 17px; min-height: 44px; text-align: center; border-radius: 8px; font: 600 13px/1.4 var(--ui-font); color: #b9c7be; pointer-events: none; }
.setup-car-options input:checked + span { background: #34443a; color: #f0f4eb; box-shadow: inset 0 0 0 1px #596d5e, 0 1px 3px #0003; }
.setup-car-options input:focus-visible + span { outline: 2px solid #e5f2b7; outline-offset: 3px; }
.setup-car-options input:disabled + span { opacity: .6; }
.setup-steer-directions { display: flex; gap: 8px; margin-top: 24px; }
.setup-steer-directions button { flex: 1; min-height: 44px; padding: 10px; border: 1px solid #526456; border-radius: 12px; background: #17251c; color: #c8d5ca; font: 500 13px var(--ui-font); cursor: pointer; }
.setup-steer-directions button[aria-pressed="true"] { border-color: #ddeb9c; color: #e5f2b7; background: #30402c; }
.setup-lab[data-setup-topic="steering"] .setup-legend i { border-color: #ddeb9c; }
@media (max-width: 1100px) {
 .setup-lab-toolbar { align-items: stretch; flex-direction: column; }
 .setup-car-label { justify-content: space-between; }
 .setup-mode button { flex: 1; }
}
@media (max-width: 700px) {
 .setup-mode { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; }
 .setup-mode button { border-radius: 8px 8px 0 0; padding: 13px 8px; font-size: 13px; }
 .setup-car-options { width: calc(100% - 42px); }
 .setup-car-options label { flex: 1; }
 .setup-car-options span { min-width: 0; padding-inline: 10px; }
}
@media (forced-colors: active) {
 .setup-car-options input:checked + span { outline: 2px solid Highlight; }
}

/* Two chapters share a single stage; only the current chapter's topics appear. */
.setup-chapters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; flex-shrink: 0; padding: 5px; margin-bottom: 3px; border: 1px solid #435048; border-radius: 16px; background: #121a16; }
.setup-chapters button { display: flex; gap: 10px; align-items: center; justify-content: center; padding: 16px 18px; min-height: 56px; border: 1px solid transparent; border-radius: 11px; background: transparent; color: #b8c8bd; font: 600 14px/1.3 var(--ui-font); cursor: pointer; transition: background-color 150ms, color 150ms; }
.setup-chapters button svg { width: 21px; height: 21px; flex: 0 0 21px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.setup-chapters button[aria-pressed="true"] { background: #ddeb9c; color: #18231b; border-color: #e8f3bc; box-shadow: 0 2px 5px #0003; }
@media (hover: hover) {
 .setup-chapters button:not([aria-pressed="true"]):hover { color: #f0f4eb; background: #253129; }
 .setup-mode button:not([aria-pressed="true"]):hover { color: #f0f4eb; background: #ffffff08; }
 .setup-car-options label:hover input:not(:checked) + span { background: #243128; color: #f0f4eb; }
}
@media (prefers-reduced-motion: reduce) {
 .setup-chapters button, .setup-mode button { transition: none; }
}
@media (max-width: 1000px) {
 .setup-lab-heading { align-items: end; gap: 24px; }
 .setup-chapters button { padding-inline: 13px; font-size: 13px; }
}
.setup-motion-playback { margin-top: 24px; }
.setup-motion-playback button { display: flex; align-items: center; justify-content: space-between; gap: 18px; width: 100%; min-height: 50px; padding: 14px 18px; border: 1px solid #ddeb9c; border-radius: 13px; background: #ddeb9c; color: #1b271e; font: 600 14px var(--ui-font); cursor: pointer; }
.setup-motion-playback > p { min-height: 36px; margin-top: 12px; font-size: 12px; line-height: 1.5; color: #b4c5b9; }
.setup-lab[data-setup-chapter="motion"] .setup-controls { display: flex; flex-direction: column; }
.setup-lab[data-setup-chapter="motion"] .setup-response { margin-top: auto; }
.setup-lab[data-setup-chapter="motion"] .setup-motion-playback { margin-bottom: 24px; }
.setup-lab[data-setup-topic="steering"] [data-setup-ground], .setup-lab[data-setup-topic="suspension"] [data-setup-ground] { visibility: hidden; }
@media (max-width: 700px) {
 .setup-lab-heading { margin-bottom: 20px; }
 .setup-chapters { margin-top: 24px; margin-bottom: 0; width: 100%; border-radius: 14px; }
 .setup-chapters button { min-height: 52px; padding: 12px 8px; gap: 8px; font-size: 13px; }
 .setup-chapters button svg { width: 18px; height: 18px; flex-basis: 18px; }
 .setup-motion-topics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
 .setup-motion-topics button { font-size: 12px; }
}

@media (forced-colors: active) {
 .setup-chapters button[aria-pressed="true"] { border-color: Highlight; }
 .setup-mode button[aria-pressed="true"]::after { background: Highlight; }
}