:root {
  color-scheme: dark;
  --bg: #07060b;
  --panel: rgba(18, 14, 26, .92);
  --panel-2: rgba(255, 255, 255, .08);
  --text: #fff8ea;
  --muted: #c8bfae;
  --line: rgba(255, 231, 178, .22);
  --gold: #ffd166;
  --orange: #ff8a3d;
  --cyan: #62e6ff;
  --pink: #ff5fa2;
  --green: #73ff9c;
  --danger: #ff6d6d;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  overflow: auto;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 10%, rgba(255, 138, 61, .28), transparent 31%),
    radial-gradient(circle at 86% 16%, rgba(98, 230, 255, .2), transparent 34%),
    radial-gradient(circle at 75% 88%, rgba(255, 95, 162, .18), transparent 30%),
    linear-gradient(145deg, #140f19 0%, #07070c 62%, #110b13 100%);
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  cursor: pointer;
}

button:focus-visible {
  outline: 3px solid rgba(255, 209, 102, .8);
  outline-offset: 3px;
}

.shell {
  width: min(1260px, 100vw);
  min-height: 100vh;
  margin: 0 auto;
  padding: clamp(10px, 1.8vw, 20px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 16px;
}

.game-panel,
.side-panel {
  border: 1px solid var(--line);
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(24, 18, 34, .93), rgba(9, 8, 14, .97));
  box-shadow: 0 24px 80px rgba(0, 0, 0, .48);
}

.game-panel {
  min-width: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 12px;
  padding: clamp(10px, 1.6vw, 18px);
}

.top-hud {
  display: grid;
  grid-template-columns: 1fr minmax(190px, .84fr) 1fr;
  gap: 10px;
  align-items: stretch;
}

.racer-card,
.center-board,
.rank-box,
.info-card,
.item-chip {
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 18px;
  background: rgba(255, 255, 255, .08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
}

.racer-card {
  position: relative;
  overflow: hidden;
  padding: 10px 12px;
  min-width: 0;
}

.racer-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .16;
  pointer-events: none;
}

.p1-card::before {
  background: linear-gradient(90deg, var(--cyan), transparent 56%);
}

.p2-card::before {
  background: linear-gradient(270deg, var(--pink), transparent 56%);
}

.racer-card span,
.rank-box span,
.eyebrow,
.item-chip span,
.info-card span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
}

.racer-card strong,
.center-board strong,
.rank-box strong,
.info-card strong {
  position: relative;
  display: block;
  margin-top: 2px;
  font-size: clamp(18px, 2.2vw, 28px);
  line-height: 1.05;
  font-weight: 950;
  white-space: nowrap;
}

.racer-card small,
.center-board small,
.item-chip small {
  position: relative;
  display: block;
  margin-top: 5px;
  color: #e9dcc6;
  font-weight: 800;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.p1-card {
  box-shadow: inset 4px 0 0 var(--cyan), inset 0 1px 0 rgba(255, 255, 255, .06);
}

.p2-card {
  text-align: right;
  box-shadow: inset -4px 0 0 var(--pink), inset 0 1px 0 rgba(255, 255, 255, .06);
}

.center-board {
  padding: 10px 12px;
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 209, 102, .16), rgba(255, 255, 255, .07));
}

.canvas-wrap {
  position: relative;
  min-height: 0;
  display: grid;
  place-items: center;
}

canvas {
  width: 100%;
  max-height: calc(100vh - 152px);
  aspect-ratio: 16 / 9;
  height: auto;
  display: block;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, .2);
  background: #151018;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06), 0 18px 50px rgba(0, 0, 0, .45);
}

.toast {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 150px;
  max-width: min(520px, 86%);
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .25);
  background: rgba(8, 7, 12, .78);
  color: #fff7d6;
  font-weight: 950;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  backdrop-filter: blur(8px);
  z-index: 8;
}

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

.overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: none;
  place-items: center;
  padding: 18px;
  background: rgba(3, 3, 7, .68);
  backdrop-filter: blur(9px);
  border-radius: 26px;
}

.overlay.show {
  display: grid;
}

.modal {
  width: min(560px, 94vw);
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(35, 26, 48, .98), rgba(10, 9, 15, .98));
  padding: 24px;
  text-align: center;
  box-shadow: 0 28px 90px rgba(0, 0, 0, .65);
}

.modal h1 {
  margin: 0 0 8px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -.04em;
}

.modal p {
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.55;
}

.modal-actions,
.side-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.modal button,
.side-actions button,
.mobile-pad button,
.mini {
  min-height: 46px;
  border-radius: 16px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .18);
  font-weight: 950;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}

.modal button:hover,
.side-actions button:hover,
.mini:hover,
.mobile-pad button:active {
  background: rgba(255, 255, 255, .18);
  transform: translateY(-1px);
}

.modal .primary,
.mode-card.primary {
  color: #111017;
  background: linear-gradient(135deg, var(--gold), var(--orange));
  border-color: rgba(255, 209, 102, .75);
}

.result-actions {
  margin-bottom: 12px;
}

.result-grid {
  display: grid;
  gap: 8px;
  margin: 16px 0 18px;
  text-align: left;
}

.result-grid div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 11px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 13px;
  background: rgba(255, 255, 255, .08);
  font-weight: 850;
}

.result-grid span {
  color: var(--muted);
}

.side-panel {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.05;
  letter-spacing: -.035em;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--gold);
}

.lead {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  font-size: 14px;
}

.rank-box,
.info-card {
  padding: 12px;
}

.item-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.item-chip {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  align-items: center;
  padding: 10px;
}

.item-chip .icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, .12);
  font-size: 19px;
}

.help-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.help-list li {
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .1);
  color: #eee1cc;
  font-size: 13px;
  line-height: 1.45;
}

.side-actions {
  margin-top: auto;
}

.mini {
  min-height: 38px;
  white-space: nowrap;
  font-size: 12px;
}

.mobile-pad {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.steer-pad,
.drive-pad {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mobile-pad button {
  min-height: 60px;
  font-size: 18px;
  touch-action: none;
}

.drive-pad button:first-child {
  background: rgba(255, 209, 102, .18);
}

@media (max-width: 980px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .side-panel {
    order: 2;
  }

  canvas {
    max-height: none;
  }
}

@media (hover: none), (pointer: coarse) {
  .mobile-pad {
    display: grid;
  }

  .top-hud {
    grid-template-columns: 1fr 1fr;
  }

  .center-board {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .p1-card {
    grid-column: 1;
  }

  .p2-card {
    grid-column: 2;
  }
}

@media (max-width: 600px) {
  .shell {
    padding: 8px;
    gap: 10px;
  }

  .game-panel,
  .side-panel {
    border-radius: 20px;
    padding: 10px;
  }

  .top-hud {
    gap: 7px;
  }

  .racer-card,
  .center-board,
  .rank-box,
  .info-card {
    border-radius: 14px;
    padding: 8px 9px;
  }

  .racer-card span,
  .rank-box span,
  .eyebrow,
  .info-card span {
    font-size: 10px;
  }

  .racer-card strong,
  .center-board strong,
  .rank-box strong,
  .info-card strong {
    font-size: 18px;
  }

  .racer-card small,
  .center-board small {
    font-size: 11px;
  }

  canvas,
  .overlay {
    border-radius: 18px;
  }

  .modal {
    padding: 18px;
    border-radius: 20px;
  }

  .modal-actions {
    grid-template-columns: 1fr;
  }

  .mobile-pad {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  h2 {
    font-size: 24px;
  }
}