/* SqueekRace Wheel Relay. Tokens first: components use only the semantic tier. */

:root {
  color-scheme: dark;

  /* Primitives */
  --ink-950: #12152a;
  --ink-900: #1b2040;
  --ink-800: #2a3058;
  --ink-500: #7780b8;
  --cream-100: #f7f1e3;
  --cream-300: #cdcadd;
  --marigold-400: #ffc24b;
  --marigold-200: #ffe2a6;
  --mint-400: #5fe3a9;
  --lilac-300: #c3b4ff;
  --coral-400: #ff9a7a;
  --sky-300: #8fd8ff;

  /* Semantic colors */
  --color-bg-page: var(--ink-950);
  --color-bg-surface: var(--ink-900);
  --color-bg-control: var(--ink-800);
  --color-border-control: var(--ink-500);
  --color-text-primary: var(--cream-100);
  --color-text-secondary: var(--cream-300);
  --color-text-on-accent: var(--ink-950);
  --color-accent-solid: var(--marigold-400);
  --color-accent-hover: var(--marigold-200);
  --color-link: var(--marigold-200);
  --color-focus: var(--cream-100);
  --color-state-running: var(--mint-400);
  --color-state-resting: var(--lilac-300);
  --color-state-stale: var(--coral-400);
  --color-state-practice: var(--sky-300);

  /* Type: one family, two weights, six sizes */
  --font-family: ui-rounded, "SF Pro Rounded", "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;
  --weight-regular: 400;
  --weight-bold: 700;
  --text-caption: 0.8125rem;
  --text-body-sm: 0.9375rem;
  --text-body: 1.0625rem;
  --text-title: 1.375rem;
  --text-value: 2rem;
  --text-display: 3rem;

  /* Space */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;

  /* Shape and motion */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --control-height: 3rem;
  --ease-state: cubic-bezier(0.2, 0, 0, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  background: var(--color-bg-page);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: 1.5;
}

h1,
h2,
h3,
p,
ol,
ul,
dl,
dd,
fieldset {
  margin: 0;
  padding: 0;
}

fieldset {
  border: 0;
  min-inline-size: 0;
}

ol,
ul {
  list-style: none;
}

[hidden] {
  display: none !important;
}

a {
  color: var(--color-link);
  text-decoration-line: underline;
  text-underline-offset: 0.15em;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

main:focus,
h2:focus {
  outline: none;
}

.sr {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip {
  position: absolute;
  inset-block-start: var(--space-2);
  inset-inline-start: var(--space-2);
  z-index: 10;
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-control);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
}

.skip:focus {
  transform: none;
}

.noscript {
  padding: var(--space-4);
  text-align: center;
}

/* Header: name at the leading edge, utilities at the trailing edge */

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1) var(--space-3);
  padding-block: max(var(--space-2), env(safe-area-inset-top)) var(--space-1);
  padding-inline: max(var(--space-4), env(safe-area-inset-left)) max(var(--space-4), env(safe-area-inset-right));
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  line-height: 1.2;
}

.brand-mark {
  flex: none;
  inline-size: 1.5rem;
  block-size: 1.5rem;
}

.topnav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-inline-end: calc(var(--space-2) * -1);
}

.toplink {
  display: inline-flex;
  align-items: center;
  min-block-size: 2.75rem;
  padding-inline: var(--space-2);
  border: 0;
  background: none;
  color: var(--color-link);
  font: inherit;
  font-size: var(--text-body-sm);
  text-decoration-line: underline;
  text-underline-offset: 0.15em;
  cursor: pointer;
}

/* Stage: scene and controls. One column until the content has room for two. */

.stage {
  display: grid;
  gap: var(--space-3);
  padding-inline: max(var(--space-4), env(safe-area-inset-left)) max(var(--space-4), env(safe-area-inset-right));
  padding-block-end: var(--space-6);
}

.arena,
.panel {
  min-inline-size: 0;
}

.arena {
  display: grid;
  gap: var(--space-2);
  justify-items: center;
}

.banner {
  inline-size: 100%;
  padding: var(--space-1) var(--space-3);
  background: var(--color-state-practice);
  border-radius: var(--radius-sm);
  color: var(--color-text-on-accent);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-bold);
  text-align: center;
}

.scene {
  position: relative;
  inline-size: min(100%, clamp(11rem, 29vh, 22rem));
  inline-size: min(100%, clamp(11rem, 29svh, 22rem));
  aspect-ratio: 1;
}

.wheel {
  display: block;
  inline-size: 100%;
  block-size: 100%;
  overflow: visible;
}

.spokes line {
  stroke: var(--color-bg-control);
  stroke-width: 6;
}

.hub-disc {
  fill: var(--color-bg-surface);
}

.rim,
.zone,
.progress {
  fill: none;
}

.rim {
  stroke: var(--color-bg-control);
  stroke-width: 24;
}

.zone {
  stroke: var(--color-accent-solid);
  stroke-width: 24;
  opacity: 0.4;
  transition: opacity 150ms var(--ease-state);
}

.zone.is-next {
  opacity: 1;
}

.progress {
  stroke: var(--color-text-primary);
  stroke-width: 6;
}

.lines line {
  stroke: var(--color-text-primary);
  stroke-width: 4;
}

body[data-mode="practice"] .rim {
  stroke: var(--color-state-practice);
  stroke-dasharray: 5.73 5.73;
}

.hub {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  pointer-events: none;
}

.hub-value {
  font-size: var(--text-value);
  font-weight: var(--weight-bold);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.hub-value[data-kind="word"] {
  font-size: var(--text-body);
}

.hub-label {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  line-height: 1.2;
}

/* Feed state: always text plus an icon shape, never color alone */

.feed {
  inline-size: 100%;
  text-align: center;
}

.feed-title {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  line-height: 1.3;
}

.feed-icon {
  flex: none;
  inline-size: 0.75rem;
  block-size: 0.75rem;
  fill: var(--feed-color);
}

.feed {
  --feed-color: var(--color-text-secondary);
}

.feed[data-state="running"] {
  --feed-color: var(--color-state-running);
}

.feed[data-state="resting"] {
  --feed-color: var(--color-state-resting);
}

.feed[data-state="stale"] {
  --feed-color: var(--color-state-stale);
}

.feed[data-state="practice"] {
  --feed-color: var(--color-state-practice);
}

.feed[data-state="resting"] .feed-icon,
.feed[data-state="connecting"] .feed-icon {
  fill: none;
  stroke: var(--feed-color);
  stroke-width: 2;
}

.feed-detail {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  line-height: 1.35;
  text-wrap: pretty;
}

/* Setup */

.setup,
.race,
.result {
  display: grid;
  gap: var(--space-3);
}

.lede {
  font-size: var(--text-body-sm);
  text-align: center;
  text-wrap: balance;
}

.choice legend {
  padding: 0;
  margin-block-end: var(--space-1);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-bold);
}

.racer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.racer-card,
.seg-item {
  position: relative;
  display: block;
}

.racer-card input,
.seg-item input {
  position: absolute;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.racer-face {
  display: grid;
  justify-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-1);
  background: var(--color-bg-surface);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--text-body-sm);
  line-height: 1.2;
  transition: border-color 150ms var(--ease-state), background-color 150ms var(--ease-state);
}

.racer-face svg {
  inline-size: 3rem;
  block-size: 2.25rem;
}

.racer-card input:checked + .racer-face {
  background: var(--color-bg-control);
  border-color: var(--color-accent-solid);
  font-weight: var(--weight-bold);
}

.racer-card input:focus-visible + .racer-face,
.seg-item input:focus-visible + span {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.trait {
  min-block-size: 1.25rem;
  margin-block-start: var(--space-1);
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  line-height: 1.35;
}

.seg {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.seg-item span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-block-size: 2.75rem;
  background: var(--color-bg-surface);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--text-body-sm);
  transition: border-color 150ms var(--ease-state), background-color 150ms var(--ease-state);
}

.seg-item input:checked + span {
  background: var(--color-bg-control);
  border-color: var(--color-accent-solid);
  font-weight: var(--weight-bold);
}

/* Buttons */

.actions {
  display: grid;
  gap: var(--space-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 100%;
  min-block-size: var(--control-height);
  padding: var(--space-2) var(--space-4);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font: inherit;
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  line-height: 1.2;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color 150ms var(--ease-state), border-color 150ms var(--ease-state), color 150ms var(--ease-state), scale 150ms var(--ease-state);
}

.btn:active:not(:disabled) {
  scale: 0.96;
}

.btn-primary {
  background: var(--color-accent-solid);
  color: var(--color-text-on-accent);
}

.btn-secondary {
  background: var(--color-bg-control);
  border-color: var(--color-border-control);
  color: var(--color-text-primary);
}

.btn:disabled {
  background: var(--color-bg-surface);
  border-color: var(--color-bg-control);
  color: var(--color-text-secondary);
  cursor: not-allowed;
}

.btn-pass {
  min-block-size: 4rem;
  background: var(--color-bg-control);
  border-color: var(--color-border-control);
  color: var(--color-text-primary);
}

.btn-pass[data-ready="zone"] {
  background: var(--color-accent-solid);
  border-color: var(--color-accent-solid);
  color: var(--color-text-on-accent);
}

.btn-pass[data-ready="line"] {
  background: var(--color-state-stale);
  border-color: var(--color-state-stale);
  color: var(--color-text-on-accent);
}

.btn-pass[aria-disabled="true"] {
  background: var(--color-bg-surface);
  border-color: var(--color-bg-control);
  color: var(--color-text-secondary);
  cursor: not-allowed;
}

@media (hover: hover) {
  .btn-primary:hover:not(:disabled) {
    background: var(--color-accent-hover);
  }

  .btn-secondary:hover:not(:disabled) {
    border-color: var(--color-text-primary);
  }

  .racer-card:hover .racer-face,
  .seg-item:hover span {
    border-color: var(--color-border-control);
  }

  .racer-card:hover input:checked + .racer-face,
  .seg-item:hover input:checked + span {
    border-color: var(--color-accent-solid);
  }
}

/* Race */

.hud,
.stats {
  display: grid;
  gap: var(--space-2);
}

.hud {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stats {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-4);
}

.hud dt,
.stats dt {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  line-height: 1.3;
}

.hud dd,
.stats dd {
  font-size: var(--text-title);
  font-weight: var(--weight-bold);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.hint {
  min-block-size: 3rem;
  font-size: var(--text-body-sm);
  line-height: 1.35;
  text-wrap: pretty;
}

.racer-on-rim.is-moving .foot-front,
.racer-on-rim.is-moving .foot-back {
  transform-box: fill-box;
  transform-origin: center;
}

/* Result */

.result-title {
  font-size: var(--text-value);
  font-weight: var(--weight-bold);
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.result-line {
  color: var(--color-text-secondary);
  font-size: var(--text-body-sm);
  text-wrap: pretty;
}

.recap-title {
  margin-block-start: var(--space-2);
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
}

.bars {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  block-size: 4.5rem;
}

.bar {
  flex: 1 1 0;
  min-block-size: 2px;
  background: var(--color-state-running);
  border-start-start-radius: 2px;
  border-start-end-radius: 2px;
}

.bar[data-empty="true"] {
  background: var(--color-bg-control);
}

body[data-mode="practice"] .bar:not([data-empty="true"]) {
  background: var(--color-state-practice);
}

.bars-axis {
  display: flex;
  justify-content: space-between;
  margin-block-start: calc(var(--space-2) * -1);
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
}

.recap {
  display: grid;
  gap: var(--space-1);
  font-size: var(--text-body-sm);
}

.source {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
}

/* Below the game */

.lower {
  display: grid;
  gap: var(--space-8);
  padding-block: var(--space-6);
  padding-inline: max(var(--space-4), env(safe-area-inset-left)) max(var(--space-4), env(safe-area-inset-right));
}

.lower-block {
  display: grid;
  align-content: start;
  gap: var(--space-2);
  min-inline-size: 0;
  max-inline-size: 38rem;
}

.lower-block h2 {
  font-size: var(--text-title);
  font-weight: var(--weight-bold);
  line-height: 1.2;
}

.note {
  color: var(--color-text-secondary);
  font-size: var(--text-body-sm);
  text-wrap: pretty;
}

.history {
  display: grid;
  gap: var(--space-2);
}

.history-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0 var(--space-3);
  font-size: var(--text-body-sm);
  font-variant-numeric: tabular-nums;
}

.history-score {
  font-weight: var(--weight-bold);
}

.history-meta {
  color: var(--color-text-secondary);
}

.footer {
  padding-block: var(--space-4) max(var(--space-6), env(safe-area-inset-bottom));
  padding-inline: max(var(--space-4), env(safe-area-inset-left)) max(var(--space-4), env(safe-area-inset-right));
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
}

/* Help */

.help {
  inline-size: min(34rem, calc(100vw - 2rem));
  max-block-size: calc(100vh - 2rem);
  padding: var(--space-6);
  background: var(--color-bg-surface);
  border: 0;
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  overscroll-behavior: contain;
}

.help::backdrop {
  background: rgb(8 10 22 / 0.72);
}

.help h2 {
  margin-block-end: var(--space-3);
  font-size: var(--text-title);
  line-height: 1.2;
}

.help-steps {
  display: grid;
  gap: var(--space-2);
  margin-block-end: var(--space-3);
  padding-inline-start: var(--space-6);
  list-style: decimal;
  font-size: var(--text-body-sm);
}

.help form {
  margin-block-start: var(--space-4);
}

/* The compact result keeps its heading near the top of a phone. */

@media (max-width: 55.99rem) {
  body[data-phase="result"] .scene {
    inline-size: 9rem;
  }

  body[data-phase="result"] .hub-value {
    font-size: var(--text-body);
  }
}

/* Two columns once the panel has room beside a useful wheel. */

@media (min-width: 56rem) {
  .topbar,
  .stage,
  .lower,
  .footer {
    max-inline-size: 76rem;
    margin-inline: auto;
  }

  .topbar {
    padding-block-end: var(--space-3);
  }

  .stage {
    grid-template-columns: minmax(0, 1.15fr) minmax(20rem, 1fr);
    gap: var(--space-12);
    align-items: start;
  }

  .scene {
    inline-size: min(100%, 60vh);
    inline-size: min(100%, 60svh);
  }

  .hub-value {
    font-size: var(--text-display);
  }

  .hub-value[data-kind="word"] {
    font-size: var(--text-value);
  }

  .hub-label {
    font-size: var(--text-body-sm);
  }

  .feed-detail {
    font-size: var(--text-body-sm);
  }

  .lede {
    font-size: var(--text-title);
    font-weight: var(--weight-bold);
    line-height: 1.2;
    text-align: start;
  }

  .lower {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .race .actions {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  }
}

/* Motion is opt-in. The racer's position is game state and always updates. */

@media (prefers-reduced-motion: no-preference) {
  .racer-on-rim.is-moving .foot-front {
    animation: step 240ms linear infinite alternate;
  }

  .racer-on-rim.is-moving .foot-back {
    animation: step 240ms linear infinite alternate-reverse;
  }

  @keyframes step {
    from {
      transform: translateY(-1.5px);
    }

    to {
      transform: translateY(1px);
    }
  }
}

@media (forced-colors: active) {
  .btn,
  .racer-face,
  .seg-item span {
    border-color: ButtonText;
  }

  .racer-card input:checked + .racer-face,
  .seg-item input:checked + span {
    border-color: Highlight;
  }
}