:root {
  --font-sans: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius-lg: 20px;
  --radius: 14px;
  --radius-sm: 10px;
  --tap: 42px;
  --board-factor: 0.9;
  --board-cap: 920px;
  --board-chrome: 205px;
  --board-size: min(var(--board-cap), calc((100dvh - var(--board-chrome)) * var(--board-factor)));
  --scanline-opacity: 0;
  --vignette: 0.35;
}

html[data-theme="neon"] {
  color-scheme: dark;
  --bg: #050a12;
  --bg-image:
    radial-gradient(circle at 14% 4%, rgba(61, 255, 176, 0.12), transparent 42%),
    radial-gradient(circle at 86% 92%, rgba(255, 79, 216, 0.1), transparent 44%),
    linear-gradient(180deg, #050a12 0%, #071019 100%);
  --bg-size: auto;
  --text: #e9fff8;
  --muted: #7e9f96;
  --surface: rgba(9, 20, 30, 0.78);
  --surface-solid: #0a1520;
  --surface-raised: rgba(30, 55, 62, 0.45);
  --border: rgba(90, 255, 190, 0.14);
  --border-strong: rgba(90, 255, 190, 0.32);
  --accent: #3dffb0;
  --accent-2: #ff4fd8;
  --accent-ink: #03120c;
  --danger: #ff5470;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(61, 255, 176, 0.07);
  --shadow-soft: 0 14px 36px rgba(0, 0, 0, 0.25);
  --board-bg: #060d16;
  --overlay-bg: rgba(3, 9, 15, 0.62);
  --focus: #8affd5;
  --brand-glow: 0 0 24px rgba(61, 255, 176, 0.45);
  --font-display: var(--font-sans);
  --scanline-opacity: 0;
}

html[data-theme="pixel"] {
  color-scheme: dark;
  --bg: #0e0718;
  --bg-image:
    radial-gradient(circle at 18% 0%, rgba(182, 255, 59, 0.09), transparent 40%),
    radial-gradient(circle at 82% 100%, rgba(255, 92, 138, 0.1), transparent 42%),
    linear-gradient(180deg, #0e0718 0%, #150b22 100%);
  --bg-size: auto;
  --text: #f4eaff;
  --muted: #a08bbd;
  --surface: rgba(27, 16, 43, 0.86);
  --surface-solid: #1b102b;
  --surface-raised: rgba(61, 39, 91, 0.5);
  --border: rgba(182, 255, 59, 0.2);
  --border-strong: rgba(182, 255, 59, 0.5);
  --accent: #b6ff3b;
  --accent-2: #ff5c8a;
  --accent-ink: #120a1e;
  --danger: #ff5c8a;
  --shadow: 0 0 0 4px #090411, 12px 12px 0 0 rgba(0, 0, 0, 0.45);
  --shadow-soft: 6px 6px 0 0 rgba(0, 0, 0, 0.35);
  --board-bg: #140a24;
  --overlay-bg: rgba(12, 5, 22, 0.72);
  --focus: #d6ff8a;
  --brand-glow: 4px 4px 0 rgba(255, 92, 138, 0.55);
  --font-display: var(--font-mono);
  --radius-lg: 0px;
  --radius: 0px;
  --radius-sm: 0px;
  --scanline-opacity: 0.22;
}

html[data-theme="paper"] {
  color-scheme: light;
  --bg: #f2ede3;
  --bg-image:
    radial-gradient(circle at 12% 6%, rgba(255, 255, 255, 0.9), transparent 45%),
    radial-gradient(circle at 88% 94%, rgba(180, 83, 42, 0.09), transparent 42%),
    radial-gradient(circle, rgba(90, 74, 54, 0.09) 1px, transparent 1px);
  --bg-size: auto, auto, 22px 22px;
  --text: #2c2a26;
  --muted: #7a7165;
  --surface: rgba(255, 252, 245, 0.82);
  --surface-solid: #fffdf8;
  --surface-raised: rgba(255, 255, 255, 0.65);
  --border: rgba(64, 80, 70, 0.13);
  --border-strong: rgba(47, 122, 92, 0.26);
  --accent: #2f7a5c;
  --accent-2: #d06a45;
  --accent-ink: #fffdf7;
  --danger: #c04a3a;
  --shadow: 0 26px 60px rgba(90, 74, 54, 0.16);
  --shadow-soft: 0 12px 28px rgba(90, 74, 54, 0.1);
  --board-bg: #f7f2e8;
  --overlay-bg: rgba(247, 242, 232, 0.6);
  --focus: #2f7a5c;
  --brand-glow: none;
  --font-display: var(--font-sans);
  --scanline-opacity: 0;
}

html[data-theme="forest"] {
  color-scheme: light;
  --bg: #eef2e3;
  --bg-image:
    radial-gradient(circle at 12% 4%, rgba(255, 255, 255, 0.9), transparent 44%),
    radial-gradient(circle at 86% 94%, rgba(63, 111, 58, 0.14), transparent 46%),
    repeating-linear-gradient(135deg, rgba(63, 111, 58, 0.04) 0 1px, transparent 1px 7px);
  --bg-size: auto, auto, auto;
  --text: #22301d;
  --muted: #6d7b60;
  --surface: rgba(255, 255, 250, 0.82);
  --surface-solid: #f8faef;
  --surface-raised: rgba(255, 255, 255, 0.6);
  --border: rgba(63, 111, 58, 0.16);
  --border-strong: rgba(63, 111, 58, 0.34);
  --accent: #3f6f3a;
  --accent-2: #b5651d;
  --accent-ink: #f8faef;
  --danger: #b03a2e;
  --shadow: 0 26px 60px rgba(50, 70, 40, 0.16);
  --shadow-soft: 0 12px 28px rgba(50, 70, 40, 0.1);
  --board-bg: #f4f6e9;
  --overlay-bg: rgba(244, 246, 233, 0.68);
  --focus: #2f5d2a;
  --brand-glow: none;
  --font-display: var(--font-sans);
  --scanline-opacity: 0;
  --radius-lg: 18px;
}

html[data-theme="ocean"] {
  color-scheme: dark;
  --bg: #03141f;
  --bg-image:
    radial-gradient(circle at 18% 0%, rgba(56, 232, 208, 0.14), transparent 42%),
    radial-gradient(circle at 84% 92%, rgba(157, 123, 255, 0.12), transparent 46%),
    linear-gradient(180deg, #03141f 0%, #04202c 100%);
  --bg-size: auto;
  --text: #e2fbff;
  --muted: #79a6b4;
  --surface: rgba(5, 32, 46, 0.8);
  --surface-solid: #05202e;
  --surface-raised: rgba(20, 70, 84, 0.45);
  --border: rgba(56, 232, 208, 0.16);
  --border-strong: rgba(56, 232, 208, 0.36);
  --accent: #38e8d0;
  --accent-2: #ffb703;
  --accent-ink: #02151f;
  --danger: #ff6b6b;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(56, 232, 208, 0.08);
  --shadow-soft: 0 14px 36px rgba(0, 0, 0, 0.25);
  --board-bg: #05202e;
  --overlay-bg: rgba(2, 12, 20, 0.62);
  --focus: #8ffff1;
  --brand-glow: 0 0 24px rgba(56, 232, 208, 0.4);
  --font-display: var(--font-sans);
  --scanline-opacity: 0.1;
}

html[data-theme="sunset"] {
  color-scheme: dark;
  --bg: #170b12;
  --bg-image:
    radial-gradient(circle at 78% 8%, rgba(255, 209, 102, 0.18), transparent 42%),
    radial-gradient(circle at 12% 92%, rgba(255, 84, 112, 0.12), transparent 44%),
    linear-gradient(180deg, #170b12 0%, #241017 100%);
  --bg-size: auto;
  --text: #ffece2;
  --muted: #b38e86;
  --surface: rgba(30, 15, 24, 0.8);
  --surface-solid: #1e0f18;
  --surface-raised: rgba(70, 36, 48, 0.45);
  --border: rgba(255, 138, 91, 0.16);
  --border-strong: rgba(255, 138, 91, 0.36);
  --accent: #ff8a5b;
  --accent-2: #ffd166;
  --accent-ink: #2a0f10;
  --danger: #ff5470;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(255, 138, 91, 0.08);
  --shadow-soft: 0 14px 36px rgba(0, 0, 0, 0.25);
  --board-bg: #201018;
  --overlay-bg: rgba(18, 7, 12, 0.62);
  --focus: #ffc2a3;
  --brand-glow: 0 0 24px rgba(255, 138, 91, 0.42);
  --font-display: var(--font-sans);
  --scanline-opacity: 0;
  --radius-lg: 18px;
}

html[data-theme="candy"] {
  color-scheme: light;
  --bg: #fdf0f6;
  --bg-image:
    radial-gradient(circle at 10% 2%, rgba(255, 255, 255, 0.95), transparent 42%),
    radial-gradient(circle at 88% 96%, rgba(124, 92, 255, 0.12), transparent 46%),
    radial-gradient(circle, rgba(224, 82, 141, 0.1) 1px, transparent 1px);
  --bg-size: auto, auto, 20px 20px;
  --text: #3d1b30;
  --muted: #93708a;
  --surface: rgba(255, 250, 253, 0.86);
  --surface-solid: #fffafd;
  --surface-raised: rgba(255, 255, 255, 0.65);
  --border: rgba(224, 82, 141, 0.16);
  --border-strong: rgba(224, 82, 141, 0.32);
  --accent: #e0528d;
  --accent-2: #7c5cff;
  --accent-ink: #fffafd;
  --danger: #d63b63;
  --shadow: 0 26px 60px rgba(150, 60, 100, 0.16);
  --shadow-soft: 0 12px 28px rgba(150, 60, 100, 0.1);
  --board-bg: #fff7fb;
  --overlay-bg: rgba(255, 247, 251, 0.66);
  --focus: #c02f6d;
  --brand-glow: none;
  --font-display: var(--font-sans);
  --scanline-opacity: 0;
  --radius-lg: 22px;
}

html[data-theme="mono"] {
  color-scheme: light;
  --bg: #f2f2f0;
  --bg-image:
    radial-gradient(circle at 20% 0%, rgba(255, 255, 255, 0.9), transparent 44%),
    radial-gradient(circle, rgba(0, 0, 0, 0.06) 1px, transparent 1px);
  --bg-size: auto, 18px 18px;
  --text: #161616;
  --muted: #6f6f6f;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-solid: #fbfbf9;
  --surface-raised: rgba(0, 0, 0, 0.04);
  --border: rgba(0, 0, 0, 0.16);
  --border-strong: rgba(0, 0, 0, 0.34);
  --accent: #141414;
  --accent-2: #6b6b6b;
  --accent-ink: #fbfbf9;
  --danger: #111111;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
  --shadow-soft: 0 8px 20px rgba(0, 0, 0, 0.08);
  --board-bg: #fafafa;
  --overlay-bg: rgba(250, 250, 248, 0.7);
  --focus: #000000;
  --brand-glow: none;
  --font-display: var(--font-mono);
  --scanline-opacity: 0.06;
  --radius-lg: 0px;
  --radius: 0px;
  --radius-sm: 0px;
}

html[data-theme="aurora"] {
  color-scheme: dark;
  --bg: #060b18;
  --bg-image:
    radial-gradient(circle at 20% 0%, rgba(77, 255, 195, 0.15), transparent 44%),
    radial-gradient(circle at 85% 95%, rgba(157, 123, 255, 0.18), transparent 46%),
    linear-gradient(180deg, #050914 0%, #0a1022 100%);
  --bg-size: auto;
  --text: #eee9ff;
  --muted: #8e86b8;
  --surface: rgba(12, 18, 36, 0.8);
  --surface-solid: #0c1224;
  --surface-raised: rgba(40, 40, 80, 0.45);
  --border: rgba(157, 123, 255, 0.18);
  --border-strong: rgba(157, 123, 255, 0.4);
  --accent: #9d7bff;
  --accent-2: #4dffc3;
  --accent-ink: #080b16;
  --danger: #ff6b8a;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(157, 123, 255, 0.1);
  --shadow-soft: 0 14px 36px rgba(0, 0, 0, 0.25);
  --board-bg: #081120;
  --overlay-bg: rgba(4, 7, 16, 0.62);
  --focus: #c9b8ff;
  --brand-glow: 0 0 26px rgba(157, 123, 255, 0.45);
  --font-display: var(--font-sans);
  --scanline-opacity: 0;
  --radius-lg: 18px;
}

html[data-scale="small"] {
  --board-factor: 0.72;
  --board-cap: 620px;
}

html[data-scale="normal"] {
  --board-factor: 0.9;
  --board-cap: 920px;
}

html[data-scale="large"] {
  --board-factor: 0.97;
  --board-cap: 1150px;
}

html[data-scale="huge"] {
  --board-factor: 1;
  --board-cap: 1400px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

body {
  min-height: 100dvh;
  padding: clamp(12px, 1.6vw, 18px);
  padding-bottom: max(clamp(12px, 1.6vw, 18px), env(safe-area-inset-bottom));
  display: flex;
  justify-content: center;
  background-color: var(--bg);
  background-image: var(--bg-image);
  background-size: var(--bg-size);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

button:disabled {
  cursor: default;
}

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

.app {
  width: min(100%, calc(var(--board-size) + 48px));
  margin-block: auto;
  display: flex;
  flex-direction: column;
  gap: clamp(10px, 1.4vh, 14px);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  flex: none;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--accent);
  box-shadow: var(--shadow-soft);
}

.brand-mark svg {
  width: 30px;
  height: 30px;
  filter: drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 45%, transparent));
}

.brand-eye {
  position: absolute;
  top: 12px;
  left: 18px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.1;
  white-space: nowrap;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--muted);
  text-transform: uppercase;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

.icon-btn {
  min-width: var(--tap);
  height: var(--tap);
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-soft);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease, background-color 0.2s ease;
}

html[data-theme="pixel"] .icon-btn {
  border-width: 2px;
}

.icon-btn svg {
  width: 19px;
  height: 19px;
  flex: none;
}

.icon-btn:hover:not(:disabled) {
  border-color: var(--border-strong);
  color: var(--accent);
}

.icon-btn:active:not(:disabled) {
  transform: translateY(1px);
}

.icon-btn:disabled {
  opacity: 0.4;
}

#soundBtn.is-muted {
  color: var(--muted);
}

#soundBtn.is-muted .sound-off {
  color: var(--danger);
}

.theme-btn {
  padding-inline: 12px;
}

.theme-btn .btn-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
}

.theme-btn:hover .btn-label {
  color: var(--accent);
}

.icon-btn .icon-play[hidden],
.icon-btn .icon-pause[hidden] {
  display: none;
}

.game-shell {
  display: flex;
  flex-direction: column;
  gap: clamp(8px, 1.2vh, 12px);
}

.hud {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 1px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 9px 6px 10px;
  background: var(--surface);
  min-width: 0;
}

html[data-theme="pixel"] .stat {
  padding-block: 8px;
}

.stat-label {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  white-space: nowrap;
}

.stat strong {
  font-family: var(--font-display);
  font-size: clamp(16px, 2.2vw, 20px);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stat--main strong {
  color: var(--accent);
  text-shadow: 0 0 18px color-mix(in srgb, var(--accent) 40%, transparent);
}

html[data-theme="paper"] .stat--main strong,
html[data-theme="forest"] .stat--main strong,
html[data-theme="candy"] .stat--main strong,
html[data-theme="mono"] .stat--main strong {
  text-shadow: none;
}

.stat strong.is-slow {
  color: #5cc8ff;
}

.stage {
  width: min(100%, var(--board-size));
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.stage:fullscreen {
  width: 100vw;
  height: 100vh;
  max-width: none;
  padding: 14px;
  justify-content: center;
  background-color: var(--bg);
  background-image: var(--bg-image);
  background-size: var(--bg-size);
  gap: 12px;
}

.stage:fullscreen .hud,
.stage:fullscreen .board-frame {
  width: min(calc(100vw - 28px), calc(100dvh - 115px));
}

@media (pointer: coarse) and (max-height: 540px) {
  .stage:fullscreen .touch-controls {
    display: none;
  }
}

.board-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--board-bg);
  box-shadow: var(--shadow);
  overflow: hidden;
  touch-action: none;
  isolation: isolate;
}

html[data-theme="pixel"] .board-frame {
  border-width: 3px;
  box-shadow: var(--shadow);
}

html[data-theme="paper"] .board-frame,
html[data-theme="forest"] .board-frame,
html[data-theme="candy"] .board-frame,
html[data-theme="mono"] .board-frame {
  border-color: rgba(64, 80, 70, 0.2);
}

#board {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.board-fs {
  position: absolute;
  top: 9px;
  right: 9px;
  z-index: 6;
  width: 34px;
  height: 34px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--surface-solid) 70%, transparent);
  color: var(--text);
  opacity: 0.55;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: opacity 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.board-fs svg {
  width: 15px;
  height: 15px;
}

.board-fs:hover,
.board-fs:focus-visible {
  opacity: 1;
  border-color: var(--accent);
  color: var(--accent);
}

@media (pointer: coarse) {
  .board-fs {
    width: 38px;
    height: 38px;
    opacity: 0.5;
  }
}

.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: var(--scanline-opacity);
  background: repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0.5) 0 1px, transparent 1px 3px);
  mix-blend-mode: multiply;
}

html[data-scanlines="on"] .scanlines {
  opacity: max(var(--scanline-opacity), 0.34);
}

html[data-scanlines="off"] .scanlines {
  opacity: 0;
}

html[data-theme="paper"][data-scanlines="on"] .scanlines,
html[data-theme="forest"][data-scanlines="on"] .scanlines,
html[data-theme="candy"][data-scanlines="on"] .scanlines,
html[data-theme="mono"][data-scanlines="on"] .scanlines {
  opacity: 0.14;
}

.vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: var(--vignette);
  background: radial-gradient(circle at 50% 45%, transparent 55%, rgba(0, 0, 0, 0.32) 100%);
}

html[data-theme="paper"] .vignette,
html[data-theme="forest"] .vignette,
html[data-theme="candy"] .vignette,
html[data-theme="mono"] .vignette {
  background: radial-gradient(circle at 50% 45%, transparent 58%, rgba(90, 74, 54, 0.12) 100%);
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: grid;
  place-items: center;
  padding: clamp(14px, 4vw, 28px);
  background: var(--overlay-bg);
  -webkit-backdrop-filter: blur(7px);
  backdrop-filter: blur(7px);
}

.overlay-panel {
  width: min(100%, 330px);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 9px;
  padding: clamp(18px, 4vw, 26px) clamp(16px, 4vw, 24px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  animation: panel-pop 0.32s var(--ease);
}

html[data-theme="paper"] .overlay-panel,
html[data-theme="forest"] .overlay-panel,
html[data-theme="candy"] .overlay-panel,
html[data-theme="mono"] .overlay-panel {
  background: var(--surface-solid);
}

@keyframes panel-pop {
  from { opacity: 0; transform: translateY(10px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.overlay-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.34em;
  color: var(--accent-2);
  text-transform: uppercase;
}

html[data-theme="pixel"] .overlay-kicker {
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
}

.overlay-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 5.4vw, 38px);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.12;
  text-shadow: var(--brand-glow);
}

html[data-theme="paper"] .overlay-title,
html[data-theme="forest"] .overlay-title,
html[data-theme="candy"] .overlay-title,
html[data-theme="mono"] .overlay-title {
  text-shadow: none;
}

.overlay-text {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 25em;
}

.overlay-stats {
  width: 100%;
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
}

.result-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 5px 2px;
  border-bottom: 1px dashed var(--border);
}

.result-row span {
  font-size: 11.5px;
  color: var(--muted);
}

.result-row strong {
  font-family: var(--font-display);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}

.result-row:first-child strong {
  color: var(--accent);
  font-size: 20px;
}

.new-record {
  margin: 6px 0 0;
  padding: 4px 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--accent-2);
  animation: record-pulse 1.4s ease-in-out infinite;
}

@keyframes record-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.98); }
}

.overlay-actions {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.btn {
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: transform 0.15s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 26%, transparent);
}

.btn.primary:hover {
  filter: brightness(1.06);
}

html[data-theme="pixel"] .btn.primary {
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
}

.btn.ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.btn.ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn.small {
  min-height: 38px;
  padding-inline: 18px;
  font-size: 13px;
}

.overlay-hint {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--muted);
  opacity: 0.85;
}

.touch-controls {
  display: none;
  grid-template-columns: repeat(3, 54px);
  grid-template-rows: repeat(2, 54px);
  gap: 8px;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
}

.touch-btn {
  display: grid;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--accent);
  box-shadow: var(--shadow-soft);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.1s ease, background-color 0.1s ease, color 0.1s ease;
}

.touch-btn svg {
  width: 22px;
  height: 22px;
}

.touch-btn:active {
  background: var(--accent);
  color: var(--accent-ink);
  transform: scale(0.96);
}

.touch-up { grid-area: 1 / 2; }
.touch-left { grid-area: 2 / 1; }
.touch-down { grid-area: 2 / 2; }
.touch-right { grid-area: 2 / 3; }

.meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: var(--muted);
}

.keys {
  margin: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px;
}

.keys kbd {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text);
}

.keys .dot {
  opacity: 0.5;
}

.tagline {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  opacity: 0.8;
}

.modal-open {
  overflow: hidden;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 16px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  animation: fade-in 0.2s ease;
}

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

.modal-panel {
  position: relative;
  width: min(100%, 430px);
  max-height: calc(100dvh - 32px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-solid);
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: modal-pop 0.28s var(--ease);
}

@keyframes modal-pop {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 18px 12px;
}

.modal-kicker {
  margin: 0 0 3px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--accent-2);
}

.modal-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: 0.08em;
}

.modal-head .icon-btn {
  min-width: 36px;
  height: 36px;
  padding: 0;
}

.settings-tabs {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 4px;
  margin: 2px 18px 0;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-raised);
}

.settings-tab {
  min-width: 0;
  padding: 8px 6px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.settings-tab:hover {
  color: var(--text);
}

.settings-tab[aria-selected="true"] {
  background: var(--accent);
  color: var(--accent-ink);
}

.settings-tab:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

html[data-theme="pixel"] .settings-tabs,
html[data-theme="pixel"] .settings-tab {
  border-radius: 0;
}

.settings-body {
  padding: 2px 18px 6px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.settings-panel[hidden] {
  display: none;
}

.settings-note {
  margin: 12px 0 2px;
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
}

.settings-panel > .setting:first-of-type {
  border-top: 0;
}

.record-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.record-card {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 9px 11px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.record-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.record-head span {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
}

.record-head small,
.record-meta {
  font-size: 9.5px;
  color: var(--muted);
}

.record-card strong {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.record-card.is-active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.record-card.is-active .record-head span {
  color: var(--accent-2);
}

html[data-theme="pixel"] .record-card {
  border-radius: 0;
}

.settings-group {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.settings-group:first-child {
  margin-top: 0;
}

.setting {
  padding: 13px 0;
  border-top: 1px solid var(--border);
}

.setting-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
}

.setting-head > span,
.setting-copy > span {
  font-size: 13.5px;
  font-weight: 600;
}

.setting-head small,
.setting-copy small {
  font-size: 10.5px;
  color: var(--muted);
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.setting-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.segmented {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
}

.segmented button {
  min-height: 34px;
  padding: 0 6px;
  border: 1px solid transparent;
  border-radius: calc(var(--radius-sm) - 3px);
  background: transparent;
  color: var(--muted);
  font-size: 12.5px;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.segmented button:hover {
  color: var(--text);
}

.segmented button[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}

.segmented--accent button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.segmented--accent button::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--swatch, var(--accent));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--text) 22%, transparent);
}

.segmented--accent [data-value="theme"]::before {
  background: conic-gradient(from 20deg, var(--accent), var(--accent-2), var(--accent));
}

.segmented--accent [data-value="mint"] { --swatch: #3dffb0; }
.segmented--accent [data-value="sky"] { --swatch: #58c9ff; }
.segmented--accent [data-value="violet"] { --swatch: #b39bff; }
.segmented--accent [data-value="rose"] { --swatch: #ff7bb0; }

.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.theme-chip {
  min-width: 0;
  padding: 5px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-sm) * 0.6);
  background: var(--surface-raised);
  color: var(--muted);
  font-size: 10.5px;
  transition: border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.theme-chip .swatch {
  display: block;
  height: 16px;
  border-radius: max(2px, calc(var(--radius-sm) * 0.35));
  background: linear-gradient(100deg, var(--sw-a), var(--sw-b));
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.16);
}

.theme-chip .theme-name {
  overflow: hidden;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.theme-chip:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.theme-chip[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.range {
  width: 100%;
  height: 26px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.switch {
  position: relative;
  flex: none;
  width: 46px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface-raised);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.switch span {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform 0.22s var(--ease), background-color 0.2s ease;
}

.switch[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
}

.switch[aria-pressed="true"] span {
  transform: translateX(20px);
  background: var(--accent-ink);
}

html[data-theme="pixel"] .switch {
  border-radius: 0;
}

html[data-theme="pixel"] .switch span {
  border-radius: 0;
}

.modal-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px 16px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.modal-foot > span {
  font-size: 10.5px;
  color: var(--muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

@media (pointer: coarse), (max-width: 760px) {
  .touch-controls {
    display: grid;
  }
}

@media (max-width: 760px) {
  :root {
    --board-chrome: 300px;
  }

  body {
    padding: 12px;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
  }

  .app {
    width: 100%;
    gap: 10px;
  }

  .stage {
    width: min(calc(100% * var(--board-factor)), var(--board-size));
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .brand-mark svg {
    width: 26px;
    height: 26px;
  }

  .brand-eye {
    top: 10px;
    left: 16px;
  }

  .brand-title {
    font-size: 18px;
  }

  .top-actions {
    gap: 6px;
  }

  .theme-btn .btn-label {
    display: none;
  }

  .icon-btn {
    min-width: 38px;
    height: 38px;
  }

  .theme-btn {
    padding-inline: 9px;
  }

  .hud {
    border-radius: var(--radius-sm);
  }

  .stat {
    padding: 7px 4px 8px;
  }

  .stat strong {
    font-size: 16px;
  }

  .meta {
    justify-content: center;
    text-align: center;
  }

  .keys {
    display: none;
  }

  .tagline {
    font-size: 9.5px;
  }
}

@media (max-width: 380px) {
  .top-actions {
    gap: 4px;
  }

  .icon-btn {
    min-width: 36px;
    height: 36px;
  }

  .brand-sub {
    display: none;
  }

  .overlay-panel {
    gap: 7px;
  }

  .stat strong {
    font-size: 15px;
  }
}

@media (min-width: 761px) and (max-height: 760px) {
  :root {
    --board-chrome: 170px;
  }

  .meta {
    display: none;
  }
}

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