/* Squeek Wheel Runner: pixel style, yellow accent, square corners, 3px outlines. */
:root {
  /* primitives */
  --yellow-300: #ffd95e;
  --yellow-400: #ffc93c;
  --cream-50: #fffaea;
  --cream-100: #fff2c4;
  --brown-900: #2e1f0b;
  --brown-700: #5c4520;
  --brown-200: #ead9a4;
  --red-800: #8a2a0b;
  --red-100: #ffe1d6;
  --navy-800: #1b2246;
  --blue-700: #1f5fd1;
  --gold-400: #ffd23f;

  /* roles */
  --color-bg: var(--cream-50);
  --color-surface: #ffffff;
  --color-text: var(--brown-900);
  --color-text-secondary: var(--brown-700);
  --color-outline: var(--brown-900);
  --color-track: var(--brown-200);
  --color-accent: var(--yellow-400);
  --color-accent-strong: var(--yellow-300);
  --color-on-accent: var(--brown-900);
  --color-error-bg: var(--red-100);
  --color-error-text: var(--red-800);
  --color-night: var(--navy-800);
  --color-on-night: var(--cream-100);
  --color-gold: var(--gold-400);
  --color-focus: var(--blue-700);

  /* type scale: five sizes */
  --text-sm: 0.8125rem; /* 13px: table, chips, footer */
  --text-body: 0.9375rem; /* 15px: body, labels */
  --text-md: 1.0625rem; /* 17px: brand, panel headings, live values */
  --text-lg: 1.375rem; /* 22px: result score */
  --font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --outline: 3px solid var(--color-outline);
}

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

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font: 400 var(--text-body) / 1.5 var(--font);
  overflow-x: hidden;
}

h1,
h2,
h3,
p {
  margin: 0;
}
h2,
h3 {
  font-size: var(--text-md);
  line-height: 1.25;
  font-weight: 700;
  text-wrap: balance;
}
h3 {
  margin-block-start: var(--space-4);
}

a {
  color: inherit;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

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

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  inset-inline-start: var(--space-2);
  top: -100px;
  background: var(--color-surface);
  padding: var(--space-2) var(--space-3);
  border: var(--outline);
  z-index: 10;
}
.skip-link:focus {
  top: var(--space-2);
}

.num {
  font-variant-numeric: tabular-nums;
}

/* ---------- header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-strong);
  border-block-end: var(--outline);
}
.brand {
  font-size: var(--text-md);
  font-weight: 700;
  line-height: 1.2;
}
.brand a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  text-decoration: none;
}
.brand img {
  image-rendering: pixelated;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 0 var(--space-4);
  border: var(--outline);
  border-radius: 0;
  background: var(--color-surface);
  color: var(--color-text);
  font: 700 var(--text-body) / 1.2 var(--font);
  text-decoration: none;
  cursor: pointer;
  transition-property: scale, background-color;
  transition-duration: 120ms;
  transition-timing-function: ease-out;
}
.btn:active {
  scale: 0.96;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
}
.btn-quiet {
  background: transparent;
}
@media (hover: hover) {
  .btn:hover {
    background: var(--color-bg);
  }
  .btn-primary:hover {
    background: var(--color-accent-strong);
  }
  .btn-quiet:hover {
    background: var(--color-accent);
  }
}

.chip {
  display: inline-block;
  padding: 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.6;
  white-space: nowrap;
  border: 2px solid var(--color-outline);
  background: var(--color-surface);
}
.chip[data-state="running"] {
  background: var(--color-accent);
}
.chip[data-state="sleeping"] {
  background: var(--color-night);
  color: var(--color-on-night);
}
.chip[data-state="fault"] {
  background: var(--color-error-bg);
  color: var(--color-error-text);
}
.chip-gold {
  background: var(--color-gold);
}

/* ---------- page layout ---------- */
.layout {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4) var(--space-6);
  max-width: 1200px;
  margin-inline: auto;
}
.lede {
  color: var(--color-text-secondary);
  text-wrap: pretty;
}

/* ---------- live data strip ---------- */
.live {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2) var(--space-4);
  padding: var(--space-3);
  background: var(--color-surface);
  border: var(--outline);
}
.live-block {
  grid-column: 1 / -1;
}
.live-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  align-items: baseline;
}
.live-label {
  display: block;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}
.live-row .live-label {
  display: inline;
}
.live-value {
  display: block;
  font-size: var(--text-md);
  font-weight: 700;
  line-height: 1.3;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.bar {
  height: 14px;
  margin-block-start: var(--space-1);
  border: var(--outline);
  background: var(--color-track);
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: var(--color-accent);
  /* block progress: builder.projected.blockProgress / 1e9 */
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 600ms ease-out;
  /* pixel steps on the fill */
  background-image: repeating-linear-gradient(90deg, transparent 0 10px, rgb(0 0 0 / 0.12) 10px 12px);
}
.live-stat {
  /* phones: each stat gets its own row so the status chip never runs into SQK */
  grid-column: 1 / -1;
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  min-width: 0;
}
.live-stat .chip {
  margin-block-start: var(--space-1);
}
.wheel {
  flex: none;
  color: var(--color-text);
}
.feed-error:empty {
  display: none;
}
.feed-error {
  grid-column: 1 / -1;
  padding: var(--space-2) var(--space-3);
  background: var(--color-error-bg);
  color: var(--color-error-text);
  font-weight: 700;
}

.col-game,
.col-side {
  display: grid;
  gap: var(--space-4);
  align-content: start;
  min-width: 0;
}

/* ---------- game ---------- */
.play {
  display: grid;
  gap: var(--space-2);
  outline: none;
}
.play:focus-visible .stage {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}
.hud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  align-items: center;
}
.hud strong {
  font-size: var(--text-md);
}
.stage {
  position: relative;
  border: var(--outline);
  background: var(--color-night);
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.stage.is-running {
  cursor: pointer;
}
.stage canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}
.stage-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
}
.stage-overlay[hidden] {
  display: none;
}
.stage-title {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: var(--outline);
  font-weight: 700;
  font-size: var(--text-md);
}
.toast {
  position: absolute;
  inset-inline: var(--space-3);
  top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--color-gold);
  border: var(--outline);
  font-weight: 700;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease-out;
}
.toast.is-on {
  opacity: 1;
}
.toast:empty {
  display: none;
}
.help {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}
.note-sleep {
  justify-self: start;
  padding: var(--space-1) var(--space-2);
  background: var(--color-night);
  color: var(--color-on-night);
  font-size: var(--text-sm);
}
.note-sleep[hidden] {
  display: none;
}

/* ---------- panels ---------- */
.panel {
  display: grid;
  gap: var(--space-2);
  align-content: start;
  padding: var(--space-4);
  background: var(--color-surface);
  border: var(--outline);
}
.panel[hidden] {
  display: none;
}
.muted {
  color: var(--color-text-secondary);
}
.panel ul {
  margin: 0;
  padding-inline-start: 1.2em;
  display: grid;
  gap: var(--space-1);
}
.panel code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  overflow-wrap: anywhere;
}
.panel > .btn {
  justify-self: start;
}

.result-score {
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.2;
}
.result-meta {
  color: var(--color-text-secondary);
}
.field {
  display: grid;
  gap: var(--space-1);
  margin-block-start: var(--space-2);
}
.field label {
  font-weight: 700;
}
.field input {
  min-height: 44px;
  padding: 0 var(--space-3);
  border: var(--outline);
  border-radius: 0;
  background: var(--color-surface);
  color: var(--color-text);
  font: 400 1rem / 1.2 var(--font);
  max-width: 20rem;
}
.card-preview {
  width: 100%;
  max-width: 480px;
  height: auto;
  border: var(--outline);
  margin-block-start: var(--space-2);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* leaderboard */
.board-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.board-table th,
.board-table td {
  padding: var(--space-2) var(--space-1);
  text-align: start;
  border-block-end: 2px solid var(--color-track);
}
.board-table thead th {
  color: var(--color-text-secondary);
  font-weight: 700;
}
.board-table .r {
  text-align: end;
}
.board-table td:nth-child(2) {
  overflow-wrap: anywhere;
}
.board-table tr.is-latest {
  background: var(--color-bg);
}
.board-table tbody th {
  font-weight: 700;
}

/* ---------- footer ---------- */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2) var(--space-6);
  padding: var(--space-4);
  border-block-start: var(--outline);
  font-size: var(--text-sm);
}
.site-footer a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 700;
}

/* ---------- wider screens ---------- */
@media (min-width: 40rem) {
  .live {
    grid-template-columns: 2fr 1fr 1fr;
    align-items: center;
  }
  .live-block,
  .live-stat {
    grid-column: auto;
  }
}
@media (min-width: 62rem) {
  .layout {
    grid-template-columns: minmax(0, 2fr) minmax(18rem, 1fr);
    align-items: start;
    padding-inline: var(--space-6);
  }
  .lede,
  .live {
    grid-column: 1 / -1;
  }
  .site-header,
  .site-footer {
    padding-inline: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .bar-fill,
  .toast,
  .btn {
    transition: none;
  }
}