/* =============================================================================
   OPTIMUM RACE — visual identity: charcoal + chrome
   Palette drawn from the brand mark: charcoal backgrounds, metallic silver
   borders, chrome highlights. Values only; no layout or behaviour lives here.
   No external fonts or assets: everything here is inline so the game also
   works straight from the file system.
   ========================================================================== */

:root {
  /* brand palette (from the logo) */
  --charcoal: #282c35;
  --charcoal-deep: #1f232b;
  --panel: #252a32;
  --metal-dark: #555a62;
  --metal: #8c9096;
  --silver: #c7c9cc;
  --chrome: #f2f2f2;
  --chrome-hi: #ffffff;
  --warn: #d0646e;     /* low charge / brake: the one functional warning hue */
  --amber: #ffb347;    /* cooldown + stalled rivals (existing game state) */

  /* semantic aliases used by the rules below */
  --accent: var(--silver);
  --accent-2: var(--metal);
  --bg: var(--charcoal-deep);
  --bg-2: var(--charcoal);
  --text: var(--chrome);
  --muted: rgba(242, 242, 242, 0.55);
  --glass: rgba(37, 42, 50, 0.66);
  --glass-strong: rgba(31, 35, 43, 0.92);
  --line: rgba(199, 201, 204, 0.22);
  --metal-grad: linear-gradient(180deg, #3a3f48 0%, #252a32 100%);
  --chrome-grad: linear-gradient(180deg, #ffffff 0%, #c7c9cc 48%, #8c9096 100%);
  --radius: 16px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

.app {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

#gameCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.hidden { display: none !important; }

/* ============================ HUD ======================================== */

.hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  padding: calc(14px + var(--safe-t)) 14px 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hud-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.hud-top { justify-content: space-between; }
.hud-bottom { justify-content: flex-start; align-items: flex-end; }

.card {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 14px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.9),
              inset 0 1px 0 rgba(255, 255, 255, 0.05);
  min-width: 0;
}

.card-label {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 2px;
}

.card-sub {
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
  letter-spacing: 0.04em;
}

.card-speed { min-width: 132px; }

.speed-readout {
  display: flex;
  align-items: baseline;
  gap: 5px;
  line-height: 1;
}

.speed-readout #speedValue {
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-shadow: 0 0 18px rgba(199, 201, 204, 0.55);
}

.speed-readout .unit {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.meter {
  margin-top: 8px;
  height: 5px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.09);
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--metal), var(--chrome) 70%, var(--silver));
  box-shadow: 0 0 14px rgba(199, 201, 204, 0.75);
  transition: width 60ms linear;
}

.card-progress { flex: 1; max-width: 420px; }

.progress {
  margin-top: 8px;
  height: 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--metal), var(--silver));
  box-shadow: 0 0 16px rgba(140, 144, 150, 0.8);
  transition: width 90ms linear;
}

.card-timer { text-align: right; min-width: 132px; }

.timer-readout {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
  text-shadow: 0 0 16px rgba(140, 144, 150, 0.5);
}

/* -------- boost widget ---------------------------------------------------- */

.boost-widget {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 8px 18px 8px 8px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.boost-ring {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(var(--metal) 100%, rgba(255, 255, 255, 0.08) 0);
  transition: box-shadow 200ms ease;
}

.boost-ring > span {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #1f232b;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.boost-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.boost-meta span {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.boost-meta small {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.boost-title {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.boost-meta small { font-variant-numeric: tabular-nums; }

/* ready: fully charged and usable */
.boost-widget.is-ready { border-color: rgba(199, 201, 204, 0.45); }
.boost-widget.is-ready .boost-ring { box-shadow: 0 0 22px rgba(199, 201, 204, 0.5); }
.boost-widget.is-ready #boostStatus { color: var(--silver); }

/* boosting: the ring and the widget glow */
.boost-widget.is-active {
  border-color: rgba(199, 201, 204, 0.85);
  box-shadow: 0 0 34px rgba(199, 201, 204, 0.45);
  animation: boostPulse 620ms ease-in-out infinite alternate;
}
.boost-widget.is-active .boost-ring { box-shadow: 0 0 34px rgba(199, 201, 204, 0.95); }
.boost-widget.is-active #boostStatus { color: var(--silver); }

/* cooling down after a boost */
.boost-widget.is-cooling { border-color: rgba(255, 179, 71, 0.4); }
.boost-widget.is-cooling .boost-ring { box-shadow: 0 0 16px rgba(255, 179, 71, 0.35); }
.boost-widget.is-cooling #boostStatus { color: var(--amber); }

/* not enough charge yet */
.boost-widget.is-low #boostStatus { color: var(--warn); }

@keyframes boostPulse {
  from { box-shadow: 0 0 22px rgba(199, 201, 204, 0.3); }
  to { box-shadow: 0 0 40px rgba(199, 201, 204, 0.55); }
}

/* shard counter */
.shard-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border-radius: 99px;
  border: 1px solid var(--line);
  background: var(--glass);
  color: var(--silver);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.shard-chip span { color: var(--text); font-variant-numeric: tabular-nums; }

/* -------- sound toggle ---------------------------------------------------- */

.icon-btn {
  -webkit-appearance: none;
  appearance: none;
  pointer-events: auto;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 16px;
  border-radius: 99px;
  border: 1px solid var(--line);
  background: var(--glass);
  color: var(--muted);
  font-family: var(--font);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: color 140ms ease, border-color 140ms ease, box-shadow 160ms ease;
}

.icon-btn:hover { color: var(--text); border-color: rgba(199, 201, 204, 0.45); }

.icon-btn.is-on {
  color: var(--silver);
  border-color: rgba(199, 201, 204, 0.6);
  box-shadow: 0 0 22px rgba(199, 201, 204, 0.28);
}

.icon-btn.ghost { background: var(--metal-grad); }
.icon-btn .wave { display: none; }
.icon-btn .cross { display: block; }
.icon-btn.is-on .wave { display: block; }
.icon-btn.is-on .cross { display: none; }

.menu-sound { margin-top: 16px; }

/* ============================ TOUCH CONTROLS ============================== */

.touch-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0 16px calc(16px + var(--safe-b));
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  pointer-events: none;
  z-index: 5;
}

.touch-group {
  display: flex;
  gap: 12px;
  pointer-events: auto;
}

.tbtn {
  -webkit-appearance: none;
  appearance: none;
  width: 82px;
  height: 82px;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: linear-gradient(180deg, rgba(199, 201, 204, 0.16), rgba(37, 42, 50, 0.78));
  color: var(--text);
  font-family: var(--font);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.08em;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 14px 30px -18px rgba(0, 0, 0, 0.95);
  transition: transform 90ms ease, box-shadow 120ms ease, background 120ms ease;
}

.tbtn.tbtn-brake {
  font-size: 13px;
  background: linear-gradient(180deg, rgba(208, 100, 110, 0.22), rgba(37, 42, 50, 0.8));
  border-color: rgba(208, 100, 110, 0.4);
}

.tbtn.tbtn-boost {
  font-size: 13px;
  background: linear-gradient(180deg, rgba(140, 144, 150, 0.3), rgba(37, 42, 50, 0.8));
  border-color: rgba(140, 144, 150, 0.5);
}

.tbtn.is-active {
  transform: scale(0.94);
  background: linear-gradient(180deg, rgba(199, 201, 204, 0.5), rgba(37, 42, 50, 0.85));
  box-shadow: 0 0 26px rgba(199, 201, 204, 0.55);
}

/* In touch mode the boost widget sits above the pads. */
.touch-mode .hud-bottom {
  justify-content: center;
  padding-bottom: calc(112px + var(--safe-b));
}

.touch-mode .boost-widget { padding: 6px 12px 6px 6px; gap: 9px; }
.touch-mode .boost-ring { width: 44px; height: 44px; }
.touch-mode .boost-ring > span { width: 34px; height: 34px; font-size: 12px; }
.touch-mode .boost-title { display: none; }
.touch-mode .boost-meta small { font-size: 9px; }
.touch-mode .shard-chip { padding: 7px 11px; font-size: 10px; }

/* ============================ SCREENS ===================================== */

.screen {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 10;
  background:
    radial-gradient(900px 520px at 50% 42%, rgba(140, 144, 150, 0.18), transparent 70%),
    radial-gradient(700px 420px at 80% 90%, rgba(199, 201, 204, 0.12), transparent 70%),
    rgba(31, 35, 43, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: fade-in 260ms ease both;
}

.screen::before {
  content: "";
  position: absolute;
  inset: -50%;
  background-image:
    linear-gradient(rgba(140, 144, 150, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 144, 150, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  animation: grid-drift 14s linear infinite;
  pointer-events: none;
}

@keyframes grid-drift {
  from { transform: translateY(0); }
  to { transform: translateY(46px); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.panel {
  position: relative;
  width: min(560px, 100%);
  max-height: 100%;
  overflow-y: auto;
  text-align: center;
  padding: 34px 30px 30px;
  border-radius: 24px;
  background: var(--glass-strong);
  border: 1px solid var(--line);
  box-shadow: 0 40px 90px -40px rgba(0, 0, 0, 1),
              inset 0 1px 0 rgba(255, 255, 255, 0.06);
  animation: rise 320ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.badge {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.28em;
  font-weight: 800;
  color: var(--silver);
  padding: 6px 12px;
  border-radius: 99px;
  border: 1px solid rgba(199, 201, 204, 0.35);
  background: rgba(199, 201, 204, 0.08);
  margin-bottom: 18px;
}

.badge-win {
  color: var(--chrome);
  border-color: rgba(242, 242, 242, 0.4);
  background: rgba(242, 242, 242, 0.08);
}

.title {
  margin: 0;
  font-size: clamp(34px, 8vw, 60px);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.05;
  background: linear-gradient(180deg, #ffffff 0%, #c7c9cc 52%, #8c9096 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 26px rgba(199, 201, 204, 0.35));
}

.title-sm { font-size: clamp(28px, 6vw, 42px); }

.subtitle {
  margin: 10px 0 26px;
  font-size: clamp(14px, 3.4vw, 18px);
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
}

.btn {
  -webkit-appearance: none;
  appearance: none;
  display: inline-block;
  cursor: pointer;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.18em;
  padding: 17px 40px;
  border-radius: 99px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text);
  background: var(--metal-grad);
  transition: transform 120ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}

.btn + .btn { margin-top: 12px; }

.btn-primary {
  color: #1f232b;
  background: var(--chrome-grad);
  border-color: transparent;
  box-shadow: 0 16px 44px -18px rgba(199, 201, 204, 0.85),
              inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-primary:hover { transform: translateY(-2px); }
.btn-primary:active { transform: translateY(1px) scale(0.99); }

.btn-ghost { letter-spacing: 0.14em; font-size: 13px; padding: 13px 28px; }
.btn-ghost:hover { background: linear-gradient(180deg, #4a5059 0%, #2e333c 100%); border-color: rgba(199, 201, 204, 0.55); }

.hint {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 12px;
}

.hint-row { display: flex; align-items: center; gap: 6px; }

kbd {
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 7px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text);
}

/* -------- finish stats ---------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 26px 0 28px;
}

.stat {
  padding: 14px 8px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-label {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--muted);
  font-weight: 700;
}

.stat-value {
  font-family: var(--mono);
  font-size: clamp(15px, 3.6vw, 20px);
  font-weight: 700;
  color: var(--silver);
  text-shadow: 0 0 16px rgba(199, 201, 204, 0.4);
}

/* ============================ RESPONSIVE ================================== */

@media (max-width: 620px) {
  .hud { padding: calc(10px + var(--safe-t)) 10px 10px; }
  .hud-top { gap: 8px; }
  .card { padding: 8px 10px; border-radius: 12px; }
  .card-speed, .card-timer { min-width: 96px; }
  .speed-readout #speedValue { font-size: 24px; }
  .timer-readout { font-size: 18px; }
  .card-progress .card-sub { font-size: 10px; }
  .stats { grid-template-columns: 1fr; }
  .panel { padding: 26px 20px 22px; border-radius: 20px; }
  .tbtn { width: 74px; height: 74px; border-radius: 22px; }
}

@media (max-height: 480px) {
  .hint { display: none; }
  .panel { padding: 18px 20px; }
  .subtitle { margin-bottom: 16px; }
  .stats { margin: 16px 0 18px; }
}

/* ---- reduced motion (Step 3) -------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============================ LAP CARD (Step 4) ============================ */

.card-lap { min-width: 240px; }

.lap-readout {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.lap-readout .unit { font-size: 15px; color: var(--muted); font-weight: 700; }

.card-sub-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

#lapTimeValue { color: var(--text); font-variant-numeric: tabular-nums; }

.lap-best {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.lap-best.is-set { color: var(--silver); }

/* ============================ PAUSE MENU (Step 4) ========================= */

.panel-narrow { max-width: 420px; }

.hint-inline {
  flex-direction: row;
  justify-content: center;
  margin-top: 14px;
  opacity: 0.8;
}

body.is-paused #hud { opacity: 0.35; }

/* the pause button's label is hidden on small screens */
@media (max-width: 720px) {
  #pauseBtn .sound-label { display: none; }
  #pauseBtn { padding: 10px 12px; }
  .card-lap { min-width: 0; }
}

/* very small phones: icon-only HUD buttons and a tighter bottom row */
@media (max-width: 460px) {
  .hud-bottom .icon-btn .sound-label { display: none; }  /* menu keeps its label */
  .icon-btn { padding: 9px 11px; }
  .hud-bottom { gap: 6px; }
  .boost-widget { padding: 6px 9px 6px 5px; gap: 7px; }
  .boost-meta small { font-size: 9px; letter-spacing: 0.02em; }
  .shard-chip { padding: 6px 9px; font-size: 10px; gap: 5px; }
  .card-sub-row { font-size: 10px; gap: 8px; }
  .card-lap { padding: 10px 12px; }
}

/* ============================ LAP SPLITS (Step 4) ========================= */

.splits {
  width: 100%;
  max-width: 460px;
  margin: 4px auto 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.split {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 16px;
  padding: 9px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.split-label { color: var(--muted); font-weight: 800; letter-spacing: 0.14em; }
.split-value { color: var(--text); font-weight: 700; }
.split-total { color: var(--muted); font-size: 12px; min-width: 76px; text-align: right; }

.split.is-best {
  border-color: rgba(199, 201, 204, 0.55);
  background: rgba(199, 201, 204, 0.08);
  box-shadow: 0 0 18px rgba(199, 201, 204, 0.16);
}

.split.is-best .split-label,
.split.is-best .split-value { color: var(--silver); }

.splits-note {
  text-align: center;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-top: 4px;
}

.stats-compact { margin-bottom: 18px; }

/* ============================ MINIMAP (Step 5) ============================= */

.card-map {
  padding: 6px;
  display: grid;
  place-items: center;
  min-width: 0;
}

#minimap {
  width: 132px;
  height: 132px;
  display: block;
}

@media (max-width: 900px) {
  #minimap { width: 104px; height: 104px; }
}

@media (max-width: 720px) {
  .card-map { display: none; }   /* the lap card carries the info on phones */
}

/* ============================ RACE ORDER (Step 6) ========================= */

.hud-race-order {
  position: absolute;
  top: calc(116px + var(--safe-t));
  left: 14px;
  width: 228px;
  padding: 10px 12px;
}

.position-readout { display: flex; align-items: baseline; gap: 4px; margin-bottom: 6px; }
.position-readout .card-label { margin-right: 8px; }
#positionValue { font-family: var(--mono); font-size: 28px; font-weight: 800; color: var(--silver); }
.position-readout .unit { color: var(--muted); font-size: 14px; font-weight: 700; }
.standings-list { list-style: none; margin: 0; padding: 0; }
.standing-row {
  display: grid;
  grid-template-columns: 14px 7px minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px;
  min-height: 24px;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}
.standing-rank { font-family: var(--mono); font-weight: 800; }
.driver-dot { width: 6px; height: 6px; background: var(--driver-color); border-radius: 50%; }
.standing-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 700; }
.standing-row.is-player { color: var(--text); }
.standing-row.is-player .standing-rank { color: var(--silver); }
.standing-status { min-width: 16px; text-align: right; color: var(--silver); font-size: 9px; }
.standing-row.is-stalled .standing-status { color: #ffb347; font-size: 14px; }
.rival-hint { margin: 16px 0 0; font-size: 11px; line-height: 1.7; color: var(--muted); }
.finish-standings { margin: 0 0 22px; text-align: left; }
.finish-standings h3 { color: var(--muted); font-size: 10px; letter-spacing: 0.18em; }
.finish-standings .standing-row { font-size: 11px; min-height: 35px; padding: 3px 8px; border-bottom: 1px solid var(--line); }
.finish-standings .is-player { background: rgba(199, 201, 204, 0.08); border-radius: 7px; }
.standing-time { font-family: var(--mono); font-size: 10px; }
.classification-note { font-size: 10px; line-height: 1.5; color: var(--muted); margin-top: 10px; }

@media (max-width: 720px) {
  .hud-race-order { left: 10px; top: calc(110px + var(--safe-t)); width: 186px; padding: 7px 9px; }
  #positionValue { font-size: 24px; }
  .standing-row { font-size: 9px; gap: 4px; min-height: 22px; }
}

@media (max-height: 480px) {
  .hud-race-order { top: calc(108px + var(--safe-t)); width: 186px; padding: 6px 9px; }
  .standing-row { min-height: 20px; }
  .finish-standings { margin-bottom: 14px; }
}

/* Blurring a moving canvas behind many HUD surfaces is expensive on phones.
   Keep the same palette with opaque glass; desktop retains backdrop blur. */
@media (max-width: 720px) {
  .card, .boost-widget, .shard-chip, .icon-btn, .tbtn {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .card, .boost-widget, .shard-chip, .hud-bottom .icon-btn {
    background: rgba(31, 35, 43, 0.9);
  }
}

.card-sub-row > span { white-space: nowrap; }
@media (max-width: 460px) {
  .card-sub-row { flex-direction: column; align-items: flex-start; gap: 1px; }
  .lap-best { font-size: 9px; letter-spacing: 0; }
  .lap-best-label { display: none; }
  .lap-best::before { content: "B "; font-weight: 800; }
  .hud-race-order { top: calc(130px + var(--safe-t)); }
}

@media (max-height: 480px) {
  .card, .boost-widget, .shard-chip, .icon-btn, .tbtn {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (max-width: 360px) {
  .card-speed { min-width: 72px; }
  .card-speed .unit { display: none; }
  .card-timer { min-width: 100px; }
  .timer-readout { font-size: 16px; }
  .touch-controls { padding-left: 10px; padding-right: 10px; }
  .touch-group { gap: 8px; }
  .tbtn { width: 64px; height: 64px; border-radius: 18px; }
}

/* ============================ DIFFICULTY (Step 7) ========================= */

.difficulty { margin: 18px 0 6px; text-align: center; }
.difficulty .card-label { margin-bottom: 8px; }
.difficulty-picker {
  display: inline-flex;
  gap: 6px;
  padding: 5px;
  background: rgba(31, 35, 43, 0.72);
  border: 1px solid var(--line);
  border-radius: 13px;
}
.diff-btn {
  min-width: 92px;
  padding: 9px 14px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 9px;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
}
.diff-btn:hover { color: var(--text); }
.diff-btn:focus-visible { outline: 2px solid var(--silver); outline-offset: 2px; }
.diff-btn.is-selected {
  color: #1f232b;
  background: var(--chrome-grad);
  border-color: rgba(255, 255, 255, 0.35);
}
.difficulty-hint { margin: 10px 0 0; font-size: 11px; line-height: 1.6; color: var(--muted); }

.difficulty-chip {
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--silver);
  background: rgba(199, 201, 204, 0.10);
  border: 1px solid rgba(199, 201, 204, 0.35);
  border-radius: 999px;
  white-space: nowrap;
}
.race-order-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }

.best-time { margin: 16px 0 6px; text-align: center; font-size: 11px; letter-spacing: 0.06em; color: var(--muted); }
.best-time.is-new { color: var(--silver); font-weight: 800; }

@media (max-width: 720px) {
  .difficulty-picker { width: 100%; }
  .diff-btn { flex: 1; min-width: 0; padding: 9px 8px; font-size: 10px; }
  .difficulty-hint { font-size: 10px; }
}

/* ============================ BRAND MARK ================================== */
/* The logo is an inline SVG (see the sprite at the top of index.html) so the
   single-file build keeps working. Sizes only; placement follows the panel. */

.brand-logo {
  display: block;
  height: auto;
  margin: 0 auto 16px;
  overflow: visible;
  filter: drop-shadow(0 14px 26px rgba(0, 0, 0, 0.55));
}

.brand-logo-hero {
  width: clamp(132px, 26vw, 176px);
  margin-bottom: 18px;
}

.brand-logo-sm {
  width: 68px;
  margin-bottom: 12px;
}

@media (max-width: 620px) {
  .brand-logo-hero { width: 128px; margin-bottom: 14px; }
}

@media (max-height: 480px) {
  .brand-logo-hero { width: 96px; margin-bottom: 8px; }
  .brand-logo-sm { width: 52px; margin-bottom: 6px; }
}