:root {
  color-scheme: dark;
  --bg0: #07091a;
  --bg1: #0b0f24;
  --ink: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --glass: rgba(15, 20, 50, 0.55);
  --glass2: rgba(10, 12, 28, 0.42);
  --border: rgba(255, 255, 255, 0.14);

  --pink: #ff6bd6;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --ok: #34d399;
  --danger: #fb7185;
  --warn: #fbbf24;

  --githubCornerBg: #ffc6de;
  --githubCornerFg: rgba(255, 255, 255, 0.95);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
    Helvetica, Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: radial-gradient(
      900px 520px at 18% 12%,
      rgba(139, 92, 246, 0.35) 0%,
      transparent 60%
    ),
    radial-gradient(
      800px 520px at 82% 18%,
      rgba(255, 107, 214, 0.25) 0%,
      transparent 55%
    ),
    radial-gradient(
      980px 680px at 48% 92%,
      rgba(34, 211, 238, 0.18) 0%,
      transparent 60%
    ),
    linear-gradient(180deg, var(--bg1), var(--bg0));
  padding: 14px;
  min-height: 100dvh;
  overflow-y: auto;
}

.app {
  width: min(1160px, 100%);
  margin: 0 auto;
  border-radius: 22px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.06),
    rgba(255, 255, 255, 0.02)
  );
  backdrop-filter: blur(12px);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.45);
  position: relative;
  overflow: hidden;
}

.app::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: radial-gradient(
      600px 180px at 18% 6%,
      rgba(255, 107, 214, 0.22),
      transparent 70%
    ),
    radial-gradient(
      560px 200px at 80% 16%,
      rgba(34, 211, 238, 0.18),
      transparent 72%
    ),
    repeating-linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.06) 0px,
      rgba(255, 255, 255, 0.06) 1px,
      transparent 1px,
      transparent 9px
    );
  pointer-events: none;
  opacity: 0.55;
}

.github-corner {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 50;
}

.github-corner svg {
  fill: var(--githubCornerBg);
  color: var(--githubCornerFg);
}

.github-corner .octo-arm,
.github-corner .octo-body {
  fill: currentColor;
}

.github-corner:hover .octo-arm {
  animation: octo-arm 560ms ease-in-out;
}

.github-corner .octo-arm {
  transform-origin: 130px 106px;
}

@keyframes octo-arm {
  0%,
  100% {
    transform: rotate(0);
  }
  20%,
  60% {
    transform: rotate(-25deg);
  }
  40%,
  80% {
    transform: rotate(10deg);
  }
}

@media (max-width: 560px) {
  .github-corner:hover .octo-arm {
    animation: none;
  }
  .github-corner .octo-arm {
    animation: octo-arm 560ms ease-in-out;
  }
}

.layout {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas:
    "side"
    "stage";
  gap: 12px;
}

@media (min-width: 980px) {
  .layout {
    grid-template-columns: 1fr 420px;
    align-items: start;
    grid-template-areas: "stage side";
  }
}

h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.6px;
  text-shadow: 0 2px 14px rgba(255, 107, 214, 0.14);
}

.muted {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.panel {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  background: linear-gradient(180deg, var(--glass), var(--glass2));
  backdrop-filter: blur(10px);
  overflow: hidden;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.25);
  position: relative;
}

.panelHeader {
  padding: 12px 12px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.panelTitle {
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.5px;
}

.panelBody {
  padding: 12px;
}

.stageCard {
  padding: 10px;
  grid-area: stage;
}

.stageCard .panelBody {
  display: grid;
  place-items: center;
}

.stage {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.32);
  height: min(62vh, 760px);
  width: auto;
  aspect-ratio: 2300 / 3500;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: pan-y;
}

.side {
  display: grid;
  gap: 12px;
  grid-area: side;
}

@media (min-width: 980px) {
  .stage {
    height: min(82vh, 980px);
  }

  .side {
    align-self: start;
    max-height: min(91vh, 980px);
    overflow: auto;
    padding-right: 4px;
  }

  .side::-webkit-scrollbar {
    width: 10px;
  }
  .side::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border: 2px solid rgba(0, 0, 0, 0);
    background-clip: padding-box;
    border-radius: 999px;
  }
}

.hud {
  display: grid;
  gap: 10px;
}

.statusLine {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}

.pill {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(0, 0, 0, 0.18);
  color: var(--ink);
  font-weight: 800;
  font-size: 12px;
  user-select: none;
}

.pill.warn {
  border-color: rgba(251, 191, 36, 0.38);
}
.pill.ok {
  border-color: rgba(52, 211, 153, 0.38);
}
.pill.danger {
  border-color: rgba(251, 113, 133, 0.42);
}

.btnRow {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink);
  padding: 10px 12px;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 800;
  transition: transform 120ms ease, background 120ms ease,
    border-color 120ms ease, box-shadow 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.25);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

button.ok {
  border-color: rgba(52, 211, 153, 0.38);
}

button.danger {
  border-color: rgba(251, 113, 133, 0.42);
}

button:focus-visible {
  outline: 3px solid rgba(255, 107, 214, 0.35);
  outline-offset: 2px;
}

.moves {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.gameOverBanner {
  height: 132px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: radial-gradient(
      240px 120px at 30% 35%,
      rgba(255, 107, 214, 0.22),
      transparent 70%
    ),
    radial-gradient(
      260px 160px at 70% 55%,
      rgba(34, 211, 238, 0.18),
      transparent 72%
    ),
    rgba(0, 0, 0, 0.18);
  display: grid;
  place-items: center;
  font-weight: 1000;
  font-size: 44px;
  letter-spacing: 8px;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 12px 40px rgba(255, 107, 214, 0.12);
  user-select: none;
}

.gameOverBanner[hidden] {
  display: none !important;
}

.moveBtn {
  padding: 10px 10px 8px;
  display: grid;
  gap: 8px;
  justify-items: center;
  align-content: start;
  min-height: 118px;
  background: radial-gradient(
    180px 100px at 40% 30%,
    rgba(255, 255, 255, 0.12),
    rgba(255, 255, 255, 0.04)
  );
}

.moveBtn.is-pressed {
  transform: translateY(0px) scale(0.98);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.22);
}

.moveIcon {
  display: block;
  border-radius: 12px;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.22));
}

.moveLabel {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 900;
  letter-spacing: 0.4px;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
}

pre {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 360px;
  overflow: auto;
}

pre::-webkit-scrollbar {
  width: 10px;
}
pre::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border: 2px solid rgba(0, 0, 0, 0);
  background-clip: padding-box;
  border-radius: 999px;
}

/* Devtools */
.devGrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.devList {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  overflow: auto;
  padding-right: 2px;
}
.devList::-webkit-scrollbar {
  width: 10px;
}
.devList::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border: 2px solid rgba(0, 0, 0, 0);
  background-clip: padding-box;
  border-radius: 999px;
}
.devItem {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.18);
  cursor: pointer;
  user-select: none;
}
.devItem:hover {
  background: rgba(255, 255, 255, 0.06);
}
.devItem.is-active {
  border-color: rgba(255, 107, 214, 0.38);
  box-shadow: 0 10px 30px rgba(255, 107, 214, 0.08);
}
.devItem input {
  margin: 0;
}
.devMeta {
  min-width: 0;
  display: grid;
  gap: 2px;
}
.devMeta b {
  font-size: 12px;
}
.devMeta span {
  font-size: 11px;
  color: var(--muted);
}
.devForm {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.devForm label {
  display: grid;
  gap: 4px;
  font-size: 11px;
  color: var(--muted);
  min-width: 0;
}
.devForm input[type="number"] {
  width: 100%;
  padding: 9px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.22);
  color: var(--ink);
  outline: none;
}
.devForm input[type="number"]:focus {
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
}
.devHint {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.45;
}