:root {
  color-scheme: dark;
  --gold: #ffd35a;
  --gold-deep: #b67a1d;
  --ink: #10111a;
  --panel: rgba(18, 19, 29, 0.9);
  --blue: #74dbff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% 18%, rgba(57, 78, 117, 0.42), transparent 32rem),
    linear-gradient(180deg, #171827 0%, #0d0e15 100%);
  color: #f5ecd4;
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

body {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 18px;
  touch-action: manipulation;
}

.game-shell {
  width: min(100%, 520px);
  display: grid;
  gap: 12px;
}

.topbar {
  text-align: center;
  user-select: none;
}

.topbar h1 {
  margin: 0;
  color: var(--gold);
  font-size: clamp(26px, 7vw, 40px);
  line-height: 1.05;
  text-shadow:
    0 3px 0 #7a4415,
    0 0 18px rgba(255, 211, 90, 0.35);
  letter-spacing: 0;
}

.topbar p {
  margin: 7px 0 0;
  color: #cbd8e8;
  font-size: 14px;
}

.stage-wrap {
  position: relative;
  width: min(100%, 480px);
  aspect-ratio: 2 / 3;
  margin: 0 auto;
  border: 3px solid #3f4251;
  background: #0b0d14;
  box-shadow:
    0 0 0 4px #171923,
    0 20px 55px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #11131f;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 26px;
  background:
    linear-gradient(180deg, rgba(9, 10, 16, 0.2), rgba(9, 10, 16, 0.78)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.025) 0 2px, transparent 2px 4px);
}

.overlay.hidden {
  display: none;
}

.panel {
  width: min(100%, 360px);
  padding: 24px 22px;
  background: var(--panel);
  border: 3px solid #565866;
  box-shadow:
    inset 0 0 0 2px rgba(255, 211, 90, 0.22),
    0 18px 40px rgba(0, 0, 0, 0.45);
  text-align: center;
}

.kicker {
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-shadow: 0 0 12px rgba(116, 219, 255, 0.65);
}

.panel h2 {
  margin: 8px 0 10px;
  color: var(--gold);
  font-size: 30px;
  line-height: 1.08;
  text-shadow: 0 3px 0 #7a4415;
}

.panel p {
  margin: 0 0 18px;
  color: #e5e3d8;
  font-size: 15px;
  line-height: 1.55;
}

.primary-btn,
.secondary-btn,
.touch-btn {
  border: 0;
  border-radius: 0;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  color: #211503;
  background: var(--gold);
  box-shadow:
    inset 0 -5px 0 var(--gold-deep),
    0 6px 0 #5f3816;
}

.overlay-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.primary-btn,
.secondary-btn {
  min-width: 150px;
  padding: 13px 18px 17px;
}

.secondary-btn {
  color: #f5ecd4;
  background: #4b5266;
  box-shadow:
    inset 0 -5px 0 #252b3d,
    0 6px 0 #151823;
}

.hidden {
  display: none !important;
}

.primary-btn:active,
.secondary-btn:active,
.touch-btn.is-down {
  transform: translateY(4px);
  box-shadow:
    inset 0 -2px 0 var(--gold-deep),
    0 2px 0 #5f3816;
}

.touch-controls {
  width: min(100%, 480px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr 1.2fr 1fr;
  gap: 10px;
  padding-bottom: env(safe-area-inset-bottom);
}

.touch-btn {
  min-height: 54px;
  padding: 12px 8px 16px;
  font-size: 18px;
  user-select: none;
  -webkit-user-select: none;
}

.touch-btn.jet {
  color: #061b22;
  background: #83e5ff;
  box-shadow:
    inset 0 -5px 0 #2a8aa5,
    0 6px 0 #164d5d,
    0 0 18px rgba(116, 219, 255, 0.45);
}

.touch-btn.attack {
  color: #211503;
  background: #ffd35a;
  box-shadow:
    inset 0 -5px 0 #b67a1d,
    0 6px 0 #5f3816,
    0 0 18px rgba(255, 211, 90, 0.35);
}

@media (min-width: 780px) {
  body {
    padding: 24px;
  }

  .touch-controls {
    display: none;
  }
}

@media (max-height: 820px) {
  .topbar p {
    display: none;
  }

  .game-shell {
    gap: 8px;
  }

  .touch-btn {
    min-height: 48px;
  }
}