Made of little things.

/*
  Big Rig Rush: app-owned "road furniture" look (see docs/brief.md).
  Menus are green highway signs, buttons are yellow plates, the HUD is a row of
  asphalt dashboard chips with hard offset shadows over a smooth vector city.
*/

:root {
  --ink: #15141b;
  --asphalt: #2b2c35;
  --paper: #f4ecd8;
  --sign-green: #1f6a46;
  --sign-yellow: #ffcc33;
  --pickup: #4ade80;
  --drop: #ff8a3d;
  --danger: #ff4d5e;
  --font: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --pad: 52px;
  --gap: 6px;
  color-scheme: dark;
  font: 700 12px/1.25 var(--font);
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.app {
  position: relative;
  width: 100%;
  overflow: hidden;
  outline: none;
}

.view {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

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

/* --- HUD: asphalt dashboard chips. */

.hud {
  position: absolute;
  top: max(var(--gap), env(safe-area-inset-top));
  left: max(var(--gap), env(safe-area-inset-left));
  right: max(var(--gap), env(safe-area-inset-right));
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: var(--gap);
  pointer-events: none;
}

.gauge {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 26px;
  padding: 3px 8px;
  background: var(--asphalt);
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.gauge-key {
  color: color-mix(in srgb, var(--paper) 70%, transparent);
}

.gauge-value {
  font-variant-numeric: tabular-nums;
}

.gauge-score .gauge-value {
  color: var(--sign-yellow);
}

.gauge-job[data-kind="pickup"] .gauge-key {
  color: var(--pickup);
}

.gauge-job[data-kind="deliver"] .gauge-key {
  color: var(--drop);
}

.gauge-damage {
  flex: 1 1 70px;
  max-width: 180px;
}

.bar {
  position: relative;
  flex: 1;
  height: 8px;
  min-width: 30px;
  background: var(--ink);
}

.bar i {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--pickup);
}

.bar[data-level="mid"] i {
  background: var(--sign-yellow);
}

.bar[data-level="high"] i {
  background: var(--danger);
}

.pause {
  pointer-events: auto;
  margin-left: auto;
  min-width: 32px;
  min-height: 26px;
  padding: 0 8px;
  background: var(--asphalt);
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  letter-spacing: -0.1em;
}

.app:not([data-phase="playing"]):not([data-phase="paused"]) .pause {
  visibility: hidden;
}

@media (max-width: 459px) {
  .job-district {
    display: none;
  }

  .gauge-damage {
    max-width: 120px;
  }
}

/* --- Choice dialog (tow service). */

.choice {
  background: rgba(21, 20, 27, 0.35);
}

.choice-buttons {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.choice-buttons .plate {
  margin-top: 0;
  width: 100%;
  text-align: left;
}

.choice-buttons .plate span {
  float: right;
  opacity: 0.7;
}

/* The A-10's gun heat while it cools down after overheating. */
.bar[data-level="locked"] i {
  background: #ff4d5e;
  animation: cooling 0.5s steps(2) infinite;
}

@keyframes cooling {
  50% {
    opacity: 0.4;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bar[data-level="locked"] i {
    animation: none;
  }
}

/* --- The family's favors: tap to call a hit. */

.gauge-favor {
  pointer-events: auto;
  cursor: pointer;
  font: inherit;
  color: inherit;
  border: 0;
}

.gauge-favor .gauge-key,
.gauge-favor .gauge-value {
  color: #b06cff;
}

.gauge-favor:focus-visible {
  outline: 2px solid #b06cff;
  outline-offset: 1px;
}

/* --- Clock. */

.gauge-clock .gauge-value {
  color: var(--paper);
}

.gauge-clock[data-night="true"] {
  background: #1b2340;
}

@media (max-width: 300px) {
  .gauge-clock {
    display: none;
  }
}

/* --- Gear, tachometer and speed. */

.gear {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 3px;
  background: var(--sign-yellow);
  color: var(--ink);
  font-size: 13px;
}

.gauge-drive[data-gear="R"] .gear {
  background: var(--danger);
}

.gauge-drive[data-gear="N"] .gear {
  background: var(--paper);
}

.tach {
  position: relative;
  width: 54px;
  height: 8px;
  background: linear-gradient(90deg, var(--ink) 0 80%, #3a1418 80% 100%);
}

.tach i {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--pickup);
}

.tach[data-zone="high"] i {
  background: var(--sign-yellow);
}

.tach[data-zone="red"] i {
  background: var(--danger);
}

.speed {
  min-width: 3ch;
  text-align: right;
}

.unit {
  font-size: 9px;
}

/* --- Minimap: shown when there is room for it. */

.minimap {
  position: absolute;
  right: max(var(--gap), env(safe-area-inset-right));
  top: calc(max(var(--gap), env(safe-area-inset-top)) + 38px);
  width: 128px;
  height: 137px;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  pointer-events: none;
}

@media (max-width: 479px), (max-height: 399px) {
  .minimap {
    display: none;
  }
}

/* --- Toast. */

.toast {
  position: absolute;
  left: 50%;
  top: 25%;
  transform: translate(-50%, -6px);
  padding: 5px 10px;
  background: var(--ink);
  border: 2px solid var(--paper);
  box-shadow: 3px 3px 0 #000;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s, transform 0.15s;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast[data-tone="good"] {
  color: var(--drop);
}

.toast[data-tone="info"] {
  color: var(--pickup);
}

/* --- Touch controls: hidden until a touch screen is detected or enabled in settings. */

.touch-pad {
  position: absolute;
  left: max(var(--gap), env(safe-area-inset-left));
  right: max(var(--gap), env(safe-area-inset-right));
  bottom: max(var(--gap), env(safe-area-inset-bottom));
  display: none;
  justify-content: space-between;
  pointer-events: none;
}

.show-touch .touch-pad {
  display: flex;
}

.app:not([data-phase="playing"]) .touch-pad {
  opacity: 0.35;
}

.pad-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 8px;
}

.pad-right {
  align-items: flex-end;
}

.pad-group {
  display: flex;
  gap: 8px;
  pointer-events: auto;
}

.pad-small {
  width: auto;
  min-width: 44px;
  height: 36px;
  padding: 0 8px;
  font-size: 11px;
  pointer-events: auto;
}

.pad {
  width: var(--pad);
  height: var(--pad);
  padding: 0;
  background: color-mix(in srgb, var(--asphalt) 82%, transparent);
  border: 2px solid var(--paper);
  box-shadow: 3px 3px 0 var(--ink);
  font-size: 14px;
  touch-action: none;
}

.pad.held {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
  background: var(--paper);
  color: var(--ink);
}

.pad-gas {
  background: color-mix(in srgb, var(--sign-green) 85%, transparent);
}

.pad-brake {
  background: color-mix(in srgb, #8a1c2a 85%, transparent);
}

/* --- Overlay: an interstate sign. */

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 10px;
  overflow: auto;
  background: rgba(21, 20, 27, 0.45);
}

.overlay[hidden] {
  display: none;
}

.sign {
  position: relative;
  width: min(100%, 380px);
  margin: auto;
  padding: 18px 16px 14px;
  text-align: center;
  background: var(--sign-green);
  border: 3px solid var(--paper);
  border-radius: 8px;
  outline: 3px solid var(--sign-green);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.55);
}

.sign p {
  margin: 0;
}

.sign-tab {
  position: absolute;
  top: -14px;
  right: 14px;
  padding: 2px 8px;
  background: var(--sign-green);
  border: 3px solid var(--paper);
  border-radius: 5px;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.sign-title {
  font-size: clamp(18px, 7vmin, 32px);
  line-height: 1.05;
  letter-spacing: 0.04em;
  color: #ffffff;
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.35);
}

.sign-body {
  margin-top: 8px !important;
  font-weight: 500;
  line-height: 1.35;
}

.plate {
  margin-top: 12px;
  min-height: 44px;
  padding: 8px 18px;
  background: var(--sign-yellow);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  letter-spacing: 0.06em;
}

.plate:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

/* The sports car and the dozer shift themselves: no shift buttons. */
#app[data-vehicle="dozer"] .pad[data-action="shiftUp"],
#app[data-vehicle="dozer"] .pad[data-action="shiftDown"] {
  visibility: hidden;
}

/* The sports car swaps its shift buttons for a missile launcher; the A-10 adds bombs and the gun. */
.pad-fire,
.pad-air,
#app[data-vehicle="sports"] .pad[data-action="shiftUp"],
#app[data-vehicle="sports"] .pad[data-action="shiftDown"],
#app[data-vehicle="a10"] .pad[data-action="shiftUp"],
#app[data-vehicle="a10"] .pad[data-action="shiftDown"] {
  display: none;
}

#app[data-vehicle="a10"] .pad-air,
#app[data-vehicle="a10"] .pad-fire,
#app[data-vehicle="sports"] .pad-fire {
  display: inline-block;
  background: #c0182b;
  color: #ffffff;
}

/* The A-10 swaps the horn for a weapon selector; its pedals are the throttle (THR+ / THR−). */
#app[data-vehicle="a10"] .pad-ground {
  display: none;
}

#app[data-vehicle="a10"] .pad[data-action="weapon"] {
  background: #2f3b2a;
}

/* The air-raid switch: an A-10 flown by the computer attacks the city while you drive. */
.raid-toggle {
  display: block;
  margin: 10px auto 0;
  padding: 6px 12px;
  border: 2px solid var(--paper);
  background: color-mix(in srgb, var(--asphalt) 70%, transparent);
  color: var(--paper);
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.raid-toggle[aria-pressed="true"] {
  background: #c0182b;
}

.raid-toggle span {
  opacity: 0.7;
  margin-left: 6px;
  font-size: 10px;
}

.raid-toggle[hidden] {
  display: none;
}

/* --- Ride picker on the title and end-of-shift signs. */

.vehicle-pick {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 12px;
}

.vehicle-pick[hidden] {
  display: none;
}

.pick {
  display: grid;
  gap: 2px;
  min-height: 44px;
  padding: 6px 8px;
  font: inherit;
  letter-spacing: 0.05em;
  color: var(--paper);
  background: transparent;
  border: 3px solid var(--paper);
  border-radius: 5px;
  cursor: pointer;
}

.pick b {
  font-size: 10px;
  opacity: 0.7;
}

.pick span {
  font-size: 10px;
  font-weight: 500;
  opacity: 0.8;
}

.pick[aria-checked="true"] {
  color: var(--ink);
  background: var(--sign-yellow);
  border-color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}

.pick:focus-visible {
  outline: 3px solid var(--sign-yellow);
  outline-offset: 2px;
}

.sign-hint {
  margin-top: 12px !important;
  font-size: 11px;
  color: color-mix(in srgb, var(--paper) 80%, transparent);
}

/* --- Tiny frames. */

.too-small {
  display: none;
}

@media (max-width: 159px), (max-height: 119px) {
  .too-small {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 8px;
    text-align: center;
    background: var(--sign-green);
    z-index: 2;
  }
}

@media (max-width: 300px), (max-height: 260px) {
  :root {
    --pad: 44px;
    --gap: 4px;
    font-size: 10px;
  }

  .gauge {
    min-height: 20px;
    padding: 1px 5px;
    gap: 4px;
  }

  .gauge-damage .gauge-key,
  .gauge-favor .gauge-key,
  .tach,
  .unit {
    display: none;
  }

  .pause {
    min-height: 20px;
    min-width: 26px;
  }

  .sign {
    padding: 12px 10px 10px;
  }

  .sign-body {
    display: none;
  }

  .vehicle-pick {
    margin-top: 6px;
    gap: 4px;
  }

  .pick {
    min-height: 32px;
    padding: 2px 4px;
  }

  .pick span,
  .pick b {
    display: none;
  }

  .vehicle-pick {
    grid-template-columns: repeat(2, 1fr);
  }

  .plate {
    margin-top: 8px;
    min-height: 34px;
    padding: 4px 12px;
  }

  .sign-hint {
    margin-top: 6px !important;
    font-size: 9px;
  }
}

@media (pointer: coarse) {
  .pause {
    min-width: 44px;
    min-height: 36px;
  }
}

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