@import url("https://fonts.googleapis.com/css2?family=Hind:wght@400;500;600;700&display=swap");
  svg.svelte-1bamv03 {
    display: block;
  }

  .board__note.svelte-1u53lav {
    font-size: 0.85rem;
    opacity: 0.7;
  }

  .leaders.svelte-1u53lav {
    display: grid;
    gap: 0.1rem;
    width: 100%;
    max-width: 20rem;
    margin: 0;
    padding: 0;
    list-style: none;
    font-variant-numeric: tabular-nums;
  }

  .leaders__row.svelte-1u53lav {
    display: grid;
    grid-template-columns: 1.6rem minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.16rem 0.2rem;
    font-size: 0.9rem;
    text-align: left;
  }

  .leaders__row.svelte-1u53lav:nth-child(odd) {
    background: rgb(242 246 249 / 0.06);
  }

  .leaders__rank.svelte-1u53lav {
    opacity: 0.6;
    text-align: right;
  }

  .leaders__name.svelte-1u53lav {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .leaders__score.svelte-1u53lav {
    font-weight: 700;
  }

  .dialog__best.svelte-5dx56c {
    font-weight: 700;
  }

  .dialog__name.svelte-5dx56c {
    display: flex;
    gap: 0.4rem;
    width: 100%;
    max-width: 20rem;
  }

  .dialog__name.svelte-5dx56c input:where(.svelte-5dx56c) {
    flex: 1;
    min-width: 0;
    font: inherit;
    padding: 0.45rem 0.6rem;
    border: 1px solid var(--panel-border);
    border-radius: 0.16rem;
    background: rgb(242 246 249 / 0.08);
    color: var(--panel-text);
  }

  .dialog__name.svelte-5dx56c input:where(.svelte-5dx56c)::placeholder {
    color: var(--panel-text);
    opacity: 0.45;
  }

  .board__heading.svelte-lxixu7 {
    margin: 0.6rem 0 0.1rem;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.65;
  }

  .board__note.svelte-lxixu7 {
    font-size: 0.85rem;
    opacity: 0.7;
  }

  .runs.svelte-lxixu7 {
    display: grid;
    gap: 0.1rem;
    width: 100%;
    max-width: 20rem;
    margin: 0;
    padding: 0;
    list-style: none;
    font-variant-numeric: tabular-nums;
  }

  .runs__row.svelte-lxixu7 {
    display: grid;
    grid-template-columns: 3.4rem auto minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.16rem 0.2rem;
    font-size: 0.9rem;
    text-align: left;
  }

  .runs__row.svelte-lxixu7:nth-child(odd) {
    background: rgb(242 246 249 / 0.06);
  }

  .runs__day.svelte-lxixu7 {
    opacity: 0.6;
  }

  .runs__score.svelte-lxixu7 {
    font-weight: 700;
  }

  .runs__meta.svelte-lxixu7 {
    opacity: 0.75;
  }

  .runs__unit.svelte-lxixu7 {
    margin-left: 0.1rem;
    font-size: 0.72em;
    font-weight: 400;
    opacity: 0.7;
  }

  .board__actions.svelte-lxixu7 {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
  }

  .board__secondary.svelte-lxixu7 {
    background: transparent;
    border: 1px solid rgb(242 246 249 / 0.28);
    color: inherit;
  }

  .dialog__actions.svelte-nggf0m {
    display: flex;
    gap: 0.6rem;
  }

  .demo.svelte-16i5pnm {
    width: min(20rem, 100%);
    border-radius: 0.2rem;
    background: rgb(120 182 122 / 0.22);
    border: 1px solid var(--panel-border);
    overflow: hidden;
  }

  .demo.svelte-16i5pnm svg:where(.svelte-16i5pnm) {
    display: block;
    width: 100%;
    height: auto;
  }

  .demo__other.svelte-16i5pnm {
    opacity: 0.45;
  }

  .demo__wipe.svelte-16i5pnm {
    transform-box: fill-box;
    transform-origin: 0 0;
    transform: scaleX(0);
    animation: svelte-16i5pnm-route-wipe 5.5s linear infinite;
  }

  .demo__gate.svelte-16i5pnm {
    fill: #fff8dc;
    animation: svelte-16i5pnm-gate-pulse 5.5s linear infinite;
  }

  .demo__route.svelte-16i5pnm {
    fill: none;
    stroke: #fffdf0;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 8 6;
    animation: svelte-16i5pnm-route-fade 5.5s linear infinite;
  }

  .demo__pointer.svelte-16i5pnm {
    opacity: 0;
    offset-path: path("M 30 34 C 84 22, 116 28, 150 48");
    offset-rotate: 0deg;
    animation: svelte-16i5pnm-pointer-drag 5.5s linear infinite;
  }

  .demo__plane.svelte-16i5pnm {
    offset-path: path("M 30 34 C 84 22, 116 28, 150 48 L 286 48");
    animation: svelte-16i5pnm-plane-fly 5.5s linear infinite;
  }

  @keyframes svelte-16i5pnm-route-wipe {
    0% {
      transform: scaleX(0);
    }
    18%,
    100% {
      transform: scaleX(1);
    }
  }

  @keyframes svelte-16i5pnm-route-fade {
    0%,
    62% {
      opacity: 1;
    }
    76%,
    100% {
      opacity: 0;
    }
  }

  @keyframes svelte-16i5pnm-pointer-drag {
    0% {
      offset-distance: 0%;
      opacity: 0.9;
    }
    18% {
      offset-distance: 100%;
      opacity: 0.9;
    }
    24%,
    100% {
      offset-distance: 100%;
      opacity: 0;
    }
  }

  @keyframes svelte-16i5pnm-plane-fly {
    0%,
    22% {
      offset-distance: 0%;
    }
    64% {
      offset-distance: 100%;
    }
    88% {
      offset-distance: 100%;
      opacity: 1;
    }
    97%,
    100% {
      offset-distance: 100%;
      opacity: 0;
    }
  }

  @keyframes svelte-16i5pnm-gate-pulse {
    0%,
    14% {
      fill: #fff8dc;
    }
    20% {
      fill: #ffffff;
    }
    34%,
    100% {
      fill: #fff8dc;
    }
  }

  /* Reduced motion: hold the finished approach instead of looping it. */
  .demo--still.svelte-16i5pnm .demo__route,
  .demo--still.svelte-16i5pnm .demo__pointer,
  .demo--still.svelte-16i5pnm .demo__plane,
  .demo--still.svelte-16i5pnm .demo__gate,
  .demo--still.svelte-16i5pnm .demo__wipe {
    animation: none;
  }

  .demo--still.svelte-16i5pnm .demo__wipe:where(.svelte-16i5pnm) {
    transform: scaleX(1);
  }

  .demo--still.svelte-16i5pnm .demo__pointer:where(.svelte-16i5pnm) {
    opacity: 0;
  }

  .demo--still.svelte-16i5pnm .demo__plane:where(.svelte-16i5pnm) {
    offset-distance: 100%;
  }

  .tutorial__rules.svelte-16i5pnm {
    margin: 0;
    padding-left: 1.1rem;
    text-align: left;
    display: grid;
    gap: 0.45rem;
    max-width: 22rem;
  }

  .tutorial__rules.svelte-16i5pnm li:where(.svelte-16i5pnm) {
    line-height: 1.35;
  }


:root {
  /* Translucent so the traffic underneath stays readable through the HUD.
     `--panel-solid` is for the few surfaces that must not be seen through. */
  --panel: rgb(18 28 42 / 0.44);
  --panel-solid: #121c2a;
  --panel-text: #f3f6f8;
  --panel-border: rgb(242 246 249 / 0.22);
  --panel-divider: rgb(242 246 249 / 0.16);
  --panel-shadow: drop-shadow(0 0.16rem 0 rgb(0 0 0 / 0.22));
  --panel-elevation: 0 0.16rem 0 rgb(0 0 0 / 0.22);
  --panel-blur: blur(3px) saturate(1.1);
  --panel-radius: 0.24rem;
  color-scheme: light;
  font-family:
    "Hind",
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #78b67a;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

#app {
  position: fixed;
  inset: 0;
}

main {
  position: fixed;
  inset: 0;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  image-rendering: pixelated;
}

/* --------------------------------------------------------------------- HUD */

.hud {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0.5rem;
  padding-top: max(1rem, env(safe-area-inset-top));
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
  padding-bottom: max(1rem, env(safe-area-inset-bottom));
  pointer-events: none;
}

.hud > * {
  pointer-events: auto;
}

.panel {
  background: var(--panel);
  color: var(--panel-text);
  /* The panel is see-through enough that the world behind it can be bright;
     the shadow is what keeps the labels legible over a runway. */
  text-shadow: 0 1px 2px rgb(0 0 0 / 0.6);
  border: 1px solid var(--panel-border);
  border-radius: var(--panel-radius);
  box-shadow: var(--panel-elevation);
  -webkit-backdrop-filter: var(--panel-blur);
  backdrop-filter: var(--panel-blur);
  overflow: hidden;
}

/* Without a backdrop filter the same alpha reads as washed-out rather than
   frosted, so fall back to something nearly solid. */
@supports not (
  (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))
) {
  .panel {
    background: rgb(18 28 42 / 0.78);
  }
}

/* -------------------------------------------------------------- fps meter */

/* Laid out by the HUD rather than pinned to the corner: on a phone the same
   corner is where the stats board goes, and an absolute chip would sit on top
   of the landings figure. */
.fps {
  margin-left: auto;
  align-self: flex-start;
  display: flex;
  align-items: baseline;
  gap: 0.24rem;
  padding: 0.2rem 0.4rem;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  /* Purely informational, and small enough that a stray tap on it would
     steal a drag from the aircraft underneath. */
  pointer-events: none;
  color: #6ee787;
}

.fps--critical {
  color: #ff6b6b;
}

.fps__value {
  font-size: 0.95rem;
  font-weight: 700;
}

.fps__unit {
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  opacity: 0.75;
}

/* --------------------------------------------------------------- settings */

.dialog--settings {
  width: min(24rem, calc(100vw - 2rem));
  text-align: left;
}

.settings {
  display: grid;
  width: 100%;
  gap: 0.1rem;
}

.settings__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(5.5rem, auto);
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0;
  box-shadow: inset 0 -1px 0 var(--panel-divider);
}

.settings__row:last-child {
  box-shadow: none;
}

.settings__label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.settings__glyph {
  display: grid;
  place-items: center;
  opacity: 0.8;
}

/* A switch, not a dialog action: quieter than the `Done` button below it. */
.settings__switch,
.settings__choice {
  font: inherit;
  font-weight: 700;
  font-size: 0.82rem;
  padding: 0.34rem 0.6rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.16rem;
  background: transparent;
  color: var(--panel-text);
  cursor: pointer;
}

.settings__switch[aria-checked="true"],
.settings__choice[aria-pressed="true"] {
  background: var(--panel-text);
  color: var(--panel-solid);
  border-color: var(--panel-text);
}

.settings__choices {
  display: flex;
  justify-content: flex-end;
  gap: 0.3rem;
}

/* ------------------------------------------------------------ stats board */

.board {
  display: grid;
  width: min(21rem, calc(100vw - 5.4rem));
  align-content: start;
}

.board__row {
  display: grid;
  grid-template-columns: 2.15rem 2.25rem minmax(4.2rem, 1fr) auto;
  align-items: center;
  column-gap: 0.52rem;
  min-height: 3rem;
  padding: 0.34rem 0.62rem 0.34rem 0.42rem;
  box-shadow: inset 0 -1px 0 var(--panel-divider);
}

.board__row:last-child {
  box-shadow: none;
}

.board__arrow {
  display: grid;
  place-items: center;
  width: 2.05rem;
  height: 2.05rem;
  color: var(--panel-text);
}

.board__icon {
  display: grid;
  place-items: center;
  width: 2.08rem;
  height: 2.08rem;
  border-radius: 0.16rem;
  background: var(--panel-text);
  color: var(--panel-solid);
}

.board__copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.18rem;
}

.board__title {
  font-size: 1.125rem;
  line-height: 1;
  font-weight: 700;
}

.board__value {
  justify-self: end;
  white-space: nowrap;
  font-size: 1.5rem;
  line-height: 0.82;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ----------------------------------------------------------- control rail */

.rail {
  order: -1;
  display: grid;
  align-content: start;
  width: 3.3rem;
}

.rail__button {
  display: grid;
  place-items: center;
  width: 100%;
  height: 3rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--panel-text);
  box-shadow: inset 0 -1px 0 var(--panel-divider);
  transition:
    background-color 150ms cubic-bezier(0.23, 1, 0.32, 1),
    transform 150ms cubic-bezier(0.23, 1, 0.32, 1);
  cursor: pointer;
}

.rail__button:last-child {
  box-shadow: none;
}

.rail__button:hover {
  background: rgb(242 246 249 / 0.08);
}

.rail__button:active {
  transform: scale(0.97);
}

/* A zoom button at its limit: still there, visibly spent. */
.rail__button:disabled {
  opacity: 0.4;
  cursor: default;
}

.rail__button:disabled:hover {
  background: transparent;
}

.rail__button:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid rgb(247 201 72 / 0.55);
  outline-offset: 2px;
}

.rail__chip {
  display: grid;
  place-items: center;
  width: 2.05rem;
  height: 2.05rem;
  border-radius: 0.16rem;
  background: var(--panel-text);
  color: var(--panel-solid);
}

.slider {
  display: grid;
  place-items: center;
  width: 100%;
}

/*
 * Fully custom: the native control renders as a hairline in a 3 rem column,
 * and `accent-color` cannot fix the track. `--volume-fill` is set inline from
 * the current value so the filled portion is a plain gradient stop.
 */
.slider input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  min-width: 2.4rem;
  height: 0.85rem;
  margin: 0;
  background: transparent;
  cursor: pointer;
}

.slider input::-webkit-slider-runnable-track {
  height: 0.3rem;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--panel-text) 0 var(--volume-fill, 70%),
    rgb(242 246 249 / 0.22) var(--volume-fill, 70%) 100%
  );
}

.slider input::-moz-range-track {
  height: 0.3rem;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--panel-text) 0 var(--volume-fill, 70%),
    rgb(242 246 249 / 0.22) var(--volume-fill, 70%) 100%
  );
}

.slider input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 0.72rem;
  height: 0.72rem;
  margin-top: -0.21rem;
  border-radius: 0.14rem;
  border: 0;
  background: var(--panel-text);
  box-shadow: 0 0 0 2px var(--panel-solid);
  transition: transform 120ms cubic-bezier(0.23, 1, 0.32, 1);
}

.slider input::-moz-range-thumb {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 0.14rem;
  border: 0;
  background: var(--panel-text);
  box-shadow: 0 0 0 2px var(--panel-solid);
}

.slider input:hover::-webkit-slider-thumb,
.slider input:active::-webkit-slider-thumb {
  transform: scale(1.15);
}

.slider input:disabled {
  opacity: 0.3;
  cursor: default;
}

.slider input:focus-visible {
  outline: 3px solid rgb(247 201 72 / 0.55);
  outline-offset: 2px;
}

/* -------------------------------------------------------- world overlays */

.world-layer {
  position: absolute;
  inset: 0;
  z-index: 6;
  pointer-events: none;
  overflow: hidden;
}

.badge {
  position: absolute;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 0.24rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.16rem;
  background: var(--panel);
  -webkit-backdrop-filter: var(--panel-blur);
  backdrop-filter: var(--panel-blur);
  color: var(--panel-text);
  padding: 0.2rem 0.34rem;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  filter: var(--panel-shadow);
  white-space: nowrap;
}

.badge__dot {
  width: 0.44rem;
  height: 0.44rem;
  border-radius: 999px;
}

/* Colour-blind mode: the shape replaces the dot, keeping the colour as well. */
.badge__symbol {
  font-size: 0.72rem;
  line-height: 1;
}

.tooltip {
  position: absolute;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 0.18rem;
  background: var(--panel);
  -webkit-backdrop-filter: var(--panel-blur);
  backdrop-filter: var(--panel-blur);
  color: var(--panel-text);
  padding: 0.4rem 0.62rem;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  filter: var(--panel-shadow);
  white-space: nowrap;
}

/* --------------------------------------------------------------- feedback */

/*
 * Floating score label. Projected once where the landing happened and then
 * left to the compositor: `left`/`top` are set from the projection, and the
 * animation only touches transform and opacity so it never lays out again.
 */
.popup {
  position: absolute;
  transform: translate(-50%, -50%);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  text-shadow:
    0 1px 2px rgb(0 0 0 / 0.55),
    0 0 6px rgb(0 0 0 / 0.3);
  animation: popup-rise 1100ms cubic-bezier(0.22, 0.85, 0.3, 1) forwards;
  will-change: transform, opacity;
}

@keyframes popup-rise {
  0% {
    opacity: 0;
    transform: translate(-50%, -35%) scale(0.82);
  }
  18% {
    opacity: 1;
    transform: translate(-50%, -75%) scale(1.06);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -200%) scale(1);
  }
}

/*
 * Inbound telegraph. Anchored where the arrival will cross into view, with the
 * arrow rotated by the projected travel direction — so it survives an orbit.
 * `--telegraph-urgency` runs 0..1 over the warning, and drives the beat rather
 * than a second animation.
 */
.telegraph {
  position: absolute;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 0.22rem;
  padding: 0.18rem 0.34rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.16rem;
  background: var(--panel);
  -webkit-backdrop-filter: var(--panel-blur);
  backdrop-filter: var(--panel-blur);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  filter: var(--panel-shadow);
  white-space: nowrap;
  opacity: calc(0.55 + var(--telegraph-urgency, 0) * 0.45);
  animation: telegraph-beat 900ms ease-in-out infinite;
}

.telegraph__arrow {
  display: inline-block;
  font-size: 0.66rem;
  line-height: 1;
}

.telegraph__symbol,
.telegraph__count {
  color: var(--panel-text);
}

.telegraph__symbol {
  font-size: 0.66rem;
}

@keyframes telegraph-beat {
  0%,
  100% {
    scale: 1;
  }
  50% {
    scale: 1.09;
  }
}

/* The counter jumps when it is credited: the popup says where, this says what. */
.board__value--tick {
  animation: value-pop 280ms cubic-bezier(0.2, 0.9, 0.3, 1);
}

@keyframes value-pop {
  0% {
    scale: 1;
  }
  35% {
    scale: 1.22;
  }
  100% {
    scale: 1;
  }
}

/*
 * A broken streak: red wash from the edges plus a nudge of the world. The
 * canvas is the viewport, so the shake is scaled up slightly first —
 * translating it on its own would show the page behind the edges.
 */
.flash {
  position: absolute;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    rgb(240 82 82 / 0) 38%,
    rgb(240 82 82 / 0.42) 100%
  );
  animation: flash-fade 420ms ease-out forwards;
}

/*
 * The impact frame. Full-bleed white rather than a vignette: this one is the
 * hit itself, not a warning around the edges of the screen.
 */
.flash--impact {
  background: rgb(255 255 255 / 0.62);
  animation: flash-fade 260ms ease-out forwards;
}

@keyframes flash-fade {
  0% {
    opacity: 0;
  }
  12% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

canvas.is-shaken {
  animation: world-shake 420ms cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

@keyframes world-shake {
  0%,
  100% {
    transform: scale(1.02) translate(0, 0);
  }
  20% {
    transform: scale(1.02) translate(-5px, 3px);
  }
  40% {
    transform: scale(1.02) translate(4px, -4px);
  }
  60% {
    transform: scale(1.02) translate(-3px, -2px);
  }
  80% {
    transform: scale(1.02) translate(3px, 2px);
  }
}

/* ------------------------------------------------------------- overlays */

.overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: rgb(18 28 42 / 0.55);
  padding: 1rem;
}

.dialog {
  display: grid;
  gap: 0.75rem;
  justify-items: center;
  min-width: min(22rem, calc(100vw - 2rem));
  max-height: calc(100dvh - 2rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.25rem 1.5rem;
  background: rgb(18 28 42 / 0.94);
  color: var(--panel-text);
  border: 1px solid var(--panel-border);
  border-radius: var(--panel-radius);
  box-shadow: var(--panel-elevation);
  -webkit-backdrop-filter: var(--panel-blur);
  backdrop-filter: var(--panel-blur);
  text-align: center;
}

.dialog h2 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.1;
}

.dialog p {
  margin: 0;
  opacity: 0.78;
}

.dialog__stats {
  display: flex;
  gap: 1.5rem;
  font-variant-numeric: tabular-nums;
}

.dialog__stat {
  display: grid;
  gap: 0.15rem;
}

.dialog__stat b {
  font-size: 1.75rem;
  line-height: 1;
}

.dialog__stat span {
  font-size: 0.8rem;
  opacity: 0.7;
}

.dialog button {
  font: inherit;
  font-weight: 700;
  padding: 0.5rem 1.25rem;
  border: 0;
  border-radius: 0.16rem;
  background: var(--panel-text);
  color: var(--panel-solid);
  cursor: pointer;
}

.dialog button:hover {
  background: #ffffff;
}

/*
 * Phones: the board stays out of the way at the top, and the rail becomes a
 * horizontal bar along the bottom where a thumb actually reaches. Wrapping is
 * deliberate — eight controls do not fit one row on a 320 px screen.
 */
@media (max-width: 640px) {
  .hud {
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    gap: 0.4rem;
    padding-top: max(0.75rem, env(safe-area-inset-top));
    padding-left: max(0.75rem, env(safe-area-inset-left));
    padding-right: max(0.75rem, env(safe-area-inset-right));
    padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
  }

  .rail {
    order: 1;
    display: flex;
    flex-wrap: wrap;
    align-self: center;
    justify-content: center;
    width: auto;
    max-width: 100%;
  }

  .rail__button {
    width: 2.75rem;
  }

  /* Dividers run between columns now, not rows. */
  .rail__button {
    box-shadow: inset -1px 0 0 var(--panel-divider);
  }

  /* First in the column, so it clears the board instead of covering it. */
  .fps {
    order: -1;
    align-self: flex-end;
    margin-left: 0;
  }
}

@media (max-width: 520px) {
  .board {
    width: 100%;
  }

  .board__row {
    grid-template-columns: 2rem minmax(3.2rem, 1fr) auto;
    column-gap: 0.4rem;
    min-height: 2.5rem;
    padding: 0.28rem 0.46rem 0.28rem 0.38rem;
  }

  .board__arrow {
    display: none;
  }

  .board__icon {
    width: 1.82rem;
    height: 1.82rem;
  }

  .board__title {
    font-size: 1rem;
  }

  .board__value {
    font-size: 1.25rem;
  }

  .rail__button {
    width: 2.5rem;
    height: 2.5rem;
  }

  .rail__chip {
    width: 1.9rem;
    height: 1.9rem;
  }
}

/*
 * The camera already checks `prefers-reduced-motion` before it zooms or
 * drifts; this covers the DOM half — the control-rail hover transition.
 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Announced, never drawn. */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}