:root {
  color-scheme: dark;
  --color-bg: oklch(0.11 0.018 160);
  --color-surface: oklch(0.17 0.025 160);
  --color-surface-raised: oklch(0.22 0.03 160);
  --color-field: oklch(0.6 0.13 160);
  --color-accent: oklch(0.86 0.18 110);
  --color-ink: oklch(0.96 0.01 110);
  --color-muted: oklch(0.72 0.035 160);
  --color-error: oklch(0.66 0.2 28);
  --color-focus: oklch(0.91 0.16 110);
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-lg: 1rem;
  --space-xl: 1.5rem;
  --space-2xl: 2rem;
  --radius-control: 0.75rem;
  --radius-panel: 1.125rem;
  --radius-pill: 999px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --layer-hud: 10;
  --layer-control: 20;
  --layer-screen: 30;
  --layer-feedback: 40;
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100dvh;
  overflow: hidden;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
}

button {
  min-height: 2.75rem;
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.skip-link {
  position: fixed;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: var(--layer-feedback);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-control);
  background: var(--color-ink);
  color: var(--color-bg);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.game-shell {
  position: relative;
  width: min(100vw, 30rem);
  min-height: 100dvh;
  margin: 0 auto;
  overflow: hidden;
  background: var(--color-bg);
  isolation: isolate;
}

#game-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.hud {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: var(--layer-hud);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding:
    calc(var(--space-lg) + env(safe-area-inset-top))
    calc(var(--space-lg) + env(safe-area-inset-right)) var(--space-lg)
    calc(var(--space-lg) + env(safe-area-inset-left));
  pointer-events: none;
  transition: opacity 180ms var(--ease-out);
}

.game-shell[data-screen="home"] .hud,
.game-shell[data-screen="home"] .control-deck,
.game-shell[data-screen="home"] .aim-hint {
  opacity: 0;
  pointer-events: none;
}

.score-hud {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: end;
  column-gap: var(--space-sm);
  text-shadow: 0 2px 12px oklch(0.04 0 0 / 0.76);
}

.score-hud strong {
  grid-row: 1 / 3;
  font-family:
    "Bahnschrift Condensed", "DIN Condensed", "SF Pro Condensed", sans-serif;
  font-size: 4rem;
  font-stretch: condensed;
  font-variant-numeric: tabular-nums;
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 0.83;
}

.score-hud__label {
  align-self: end;
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 800;
}

.score-hud__best {
  align-self: start;
  color: var(--color-ink);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.score-hud__best b {
  margin-left: var(--space-xs);
}

.wind-hud {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-height: 2.75rem;
  color: var(--color-ink);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  text-shadow: 0 2px 12px oklch(0.04 0 0 / 0.76);
}

.wind-arrow {
  position: relative;
  display: block;
  width: 2rem;
  height: 0.25rem;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  transform-origin: center;
  transition: transform 180ms var(--ease-out);
}

.wind-arrow::after {
  position: absolute;
  top: 50%;
  right: -0.05rem;
  width: 0.75rem;
  height: 0.75rem;
  border-top: 0.25rem solid var(--color-accent);
  border-right: 0.25rem solid var(--color-accent);
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.aim-hint {
  position: absolute;
  top: max(5.75rem, calc(env(safe-area-inset-top) + 4.75rem));
  left: 50%;
  z-index: var(--layer-hud);
  width: max-content;
  max-width: calc(100% - 2rem);
  margin: 0;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  color: var(--color-ink);
  font-size: 0.75rem;
  font-weight: 700;
  transform: translateX(-50%);
  transition:
    opacity 180ms var(--ease-out),
    transform 180ms var(--ease-out);
  pointer-events: none;
}

.aim-hint.is-used {
  opacity: 0;
  transform: translate(-50%, -0.5rem);
}

.control-deck {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: var(--layer-control);
  display: grid;
  gap: var(--space-sm);
  padding:
    var(--space-lg) calc(var(--space-lg) + env(safe-area-inset-right))
    calc(var(--space-lg) + env(safe-area-inset-bottom))
    calc(var(--space-lg) + env(safe-area-inset-left));
  border-top: 1px solid oklch(0.5 0.04 160);
  background: var(--color-surface);
  box-shadow: 0 -1rem 2.5rem oklch(0.04 0.01 160 / 0.4);
  transition:
    opacity 180ms var(--ease-out),
    transform 240ms var(--ease-out);
}

.stage-switch {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-muted);
  font-size: 0.875rem;
  font-weight: 800;
  margin-bottom: var(--space-xs);
}

.stage-switch__item {
  transition: color 180ms var(--ease-out);
}

.stage-switch__item.is-active {
  color: var(--color-accent);
}

.stage-switch__item.is-complete {
  color: var(--color-ink);
}

.stage-switch__connector {
  width: 2rem;
  height: 1px;
  background: var(--color-muted);
}

.meter-copy {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-lg);
}

.meter-copy strong {
  font-size: 1.25rem;
  line-height: 1.2;
}

.meter-copy span {
  color: var(--color-ink);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}

.timing-meter {
  position: relative;
  height: 3.25rem;
  overflow: hidden;
  border: 1px solid oklch(0.48 0.04 160);
  border-radius: var(--radius-control);
  background: var(--color-bg);
}

.timing-meter__ticks {
  position: absolute;
  inset: 0.55rem;
  opacity: 0.56;
  background: repeating-linear-gradient(
    90deg,
    var(--color-muted) 0 1px,
    transparent 1px 7.5%
  );
}

.timing-meter__center {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--color-ink);
}

.timing-meter__marker {
  position: absolute;
  top: 0.25rem;
  bottom: 0.25rem;
  left: 50%;
  width: 0.35rem;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-bg);
  transform: translateX(-50%);
  will-change: left;
}

.timing-meter.is-power {
  background:
    linear-gradient(
      90deg,
      transparent 0 24%,
      oklch(0.6 0.13 160 / 0.4) 24% 63%,
      oklch(0.86 0.18 110 / 0.5) 63% 82%,
      oklch(0.66 0.2 28 / 0.45) 82%
    ),
    var(--color-bg);
}

.meter-legend {
  display: flex;
  justify-content: space-between;
  color: var(--color-muted);
  font-size: 0.75rem;
  margin-top: calc(var(--space-xs) * -1);
}

.control-deck > .primary-button {
  margin-top: var(--space-xs);
}

.primary-button,
.compact-button,
.text-button,
.install-button,
.dialog-close {
  border: 0;
  cursor: pointer;
  transition:
    transform 100ms var(--ease-out),
    background-color 180ms var(--ease-out),
    color 180ms var(--ease-out);
}

.primary-button:active,
.compact-button:active,
.text-button:active,
.install-button:active,
.dialog-close:active {
  transform: scale(0.98);
}

.primary-button {
  width: 100%;
  min-height: 3.5rem;
  padding: var(--space-md) 1.25rem;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 1rem;
  font-weight: 900;
}

.primary-button:hover {
  background: oklch(0.9 0.17 110);
}

.text-button {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-ink);
  font-weight: 700;
}

.text-button:hover {
  background: var(--color-surface-raised);
}

.install-button {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-muted);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-ink);
  font-weight: 700;
}

.home-screen {
  position: absolute;
  inset: 0;
  z-index: var(--layer-screen);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100dvh;
  padding:
    calc(1.5rem + env(safe-area-inset-top))
    calc(1.25rem + env(safe-area-inset-right))
    calc(1.25rem + env(safe-area-inset-bottom))
    calc(1.25rem + env(safe-area-inset-left));
  background:
    linear-gradient(
      180deg,
      oklch(0.08 0.015 160 / 0.2),
      oklch(0.08 0.015 160 / 0.94) 72%
    );
  transition:
    opacity 220ms var(--ease-out),
    visibility 220ms;
}

.game-shell:not([data-screen="home"]) .home-screen {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.home-screen__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.home-screen__top p,
.home-screen__foot {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.brand-ball {
  position: relative;
  width: 2.75rem;
  height: 2.75rem;
  border: 2px solid var(--color-ink);
  border-radius: 50%;
  background: var(--color-bg);
}

.brand-ball span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.85rem;
  height: 0.75rem;
  background: var(--color-accent);
  clip-path: polygon(50% 0, 100% 38%, 80% 100%, 20% 100%, 0 38%);
  transform: translate(-50%, -50%);
}

.home-screen__hero {
  max-width: 18rem;
  margin-top: auto;
  margin-bottom: 2.5rem;
}

.home-screen__hero h1 {
  margin: 0;
  color: var(--color-ink);
  font-size: 4.75rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.94;
  text-wrap: balance;
}

.home-screen__hero p {
  margin: var(--space-md) 0 0;
  color: var(--color-ink);
  font-size: 1rem;
  font-weight: 700;
}

.home-actions {
  display: grid;
  gap: var(--space-sm);
}

.secondary-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

.home-screen__foot {
  margin-top: var(--space-md);
  text-align: center;
}

.result-screen {
  position: absolute;
  inset: 0;
  z-index: var(--layer-screen);
  display: grid;
  place-items: end center;
  padding:
    calc(var(--space-xl) + env(safe-area-inset-top))
    calc(var(--space-lg) + env(safe-area-inset-right))
    calc(var(--space-xl) + env(safe-area-inset-bottom))
    calc(var(--space-lg) + env(safe-area-inset-left));
  background: oklch(0.06 0.01 160 / 0.72);
}

.result-screen[hidden] {
  display: none;
}

.result-screen__panel {
  width: 100%;
  padding: var(--space-xl);
  border: 1px solid oklch(0.46 0.04 160);
  border-radius: var(--radius-panel);
  background: var(--color-surface);
  text-align: center;
}

.result-screen__message {
  margin: 0;
  color: var(--color-error);
  font-weight: 800;
}

.result-screen h2 {
  margin: var(--space-sm) 0;
  font-size: 1.25rem;
}

.result-screen h2 span {
  font-family:
    "Bahnschrift Condensed", "DIN Condensed", "SF Pro Condensed", sans-serif;
  font-size: 4rem;
  font-variant-numeric: tabular-nums;
  font-weight: 900;
  line-height: 1;
}

.result-screen__panel > p {
  margin: 0 0 var(--space-lg);
}

.result-screen__panel > p strong {
  font-variant-numeric: tabular-nums;
}

.result-screen .text-button {
  margin-top: var(--space-sm);
}

.goal-banner {
  position: absolute;
  top: 22%;
  left: 50%;
  z-index: var(--layer-feedback);
  padding: var(--space-sm) 1.25rem;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 1.25rem;
  font-weight: 900;
  transform: translateX(-50%);
}

.goal-banner[hidden] {
  display: none;
}

.game-dialog {
  width: min(calc(100% - 2rem), 27rem);
  max-height: min(80dvh, 42rem);
  padding: 0;
  overflow: auto;
  border: 1px solid oklch(0.46 0.04 160);
  border-radius: var(--radius-panel);
  background: var(--color-surface);
  color: var(--color-ink);
}

.game-dialog::backdrop {
  background: oklch(0.04 0 0 / 0.76);
}

.game-dialog form {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-xl);
}

.game-dialog h2 {
  margin: 0;
  padding-right: 4rem;
  font-size: 1.25rem;
}

.dialog-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-pill);
  background: var(--color-surface-raised);
  color: var(--color-ink);
  font-size: 0.875rem;
  font-weight: 700;
}

.tutorial-list {
  display: grid;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: tutorial;
}

.tutorial-list li {
  position: relative;
  display: grid;
  gap: var(--space-xs);
  min-height: 2.75rem;
  padding-left: 3.25rem;
  counter-increment: tutorial;
}

.tutorial-list li::before {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  color: var(--color-accent);
  content: counter(tutorial);
  font-variant-numeric: tabular-nums;
  font-weight: 900;
}

.tutorial-list span,
.toggle-row small {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.field-label {
  margin-bottom: calc(var(--space-sm) * -1);
  font-size: 0.875rem;
  font-weight: 800;
}

.nickname-row {
  display: flex;
  gap: var(--space-sm);
}

.nickname-row input {
  min-width: 0;
  min-height: 2.75rem;
  flex: 1;
  padding: var(--space-md);
  border: 1px solid oklch(0.5 0.04 160);
  border-radius: var(--radius-control);
  background: var(--color-bg);
  color: var(--color-ink);
}

.compact-button {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-control);
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 0.875rem;
  font-weight: 800;
}

.ranking-list {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
}

.ranking-list li {
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  align-items: center;
  gap: var(--space-sm);
  min-height: 2.75rem;
  padding: 0 var(--space-sm);
  border-bottom: 1px solid oklch(0.32 0.03 160);
}

.ranking-list li:last-child {
  border-bottom: 0;
}

.ranking-list b {
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.empty-ranking {
  margin: 0;
  color: var(--color-muted);
  text-align: center;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: 3.5rem;
}

.toggle-row > span {
  display: grid;
  gap: var(--space-xs);
}

.toggle-row input {
  width: 1.5rem;
  height: 1.5rem;
  accent-color: var(--color-accent);
}

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

@media (min-width: 48rem) {
  body {
    display: grid;
    place-items: center;
    background:
      radial-gradient(
        circle at 50% 20%,
        oklch(0.2 0.035 160),
        var(--color-bg) 54%
      );
  }

  .game-shell {
    min-height: min(100dvh, 54rem);
    border-right: 1px solid oklch(0.3 0.03 160);
    border-left: 1px solid oklch(0.3 0.03 160);
  }

  .home-screen,
  .result-screen {
    min-height: min(100dvh, 54rem);
  }
}

@media (orientation: landscape) and (max-height: 37.5rem) {
  .game-shell {
    width: 100vw;
    max-width: none;
  }

  .control-deck {
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: min(42vw, 25rem);
    align-content: center;
    border-top: 0;
    border-left: 1px solid oklch(0.5 0.04 160);
  }

  .hud {
    right: min(42vw, 25rem);
  }

  .home-screen {
    width: min(100%, 32rem);
  }
}

@media (max-height: 43rem) and (orientation: portrait) {
  .control-deck {
    gap: var(--space-sm);
    padding-top: var(--space-md);
  }

  .timing-meter {
    height: 2.75rem;
  }

  .primary-button {
    min-height: 3rem;
    padding-block: var(--space-md);
  }

  .home-screen__hero {
    margin-bottom: var(--space-lg);
  }

  .home-screen__hero h1 {
    font-size: 4rem;
  }
}

@media (max-width: 20rem) {
  .hud {
    padding-right: calc(var(--space-sm) + env(safe-area-inset-right));
    padding-left: calc(var(--space-sm) + env(safe-area-inset-left));
  }

  .score-hud strong {
    font-size: 3.25rem;
  }

  .wind-hud {
    gap: var(--space-xs);
  }

  .control-deck {
    padding-right: calc(var(--space-md) + env(safe-area-inset-right));
    padding-left: calc(var(--space-md) + env(safe-area-inset-left));
  }

  .home-screen {
    padding-right: calc(var(--space-md) + env(safe-area-inset-right));
    padding-left: calc(var(--space-md) + env(safe-area-inset-left));
  }

  .home-screen__hero h1 {
    font-size: 4rem;
  }

  .secondary-actions {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}