:root {
  color-scheme: dark;
  font-family: monospace;
  background: #101936;
}

* { box-sizing: border-box; }

html,
body,
#game-center,
#viewport {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  background: #101936;
  touch-action: none;
}

#viewport,
#viewport canvas,
.scanlines {
  position: fixed;
  inset: 0;
}

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

.scanlines {
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(16, 25, 54, 0) 0,
    rgba(16, 25, 54, 0) 3px,
    rgba(16, 25, 54, 0.13) 3px,
    rgba(16, 25, 54, 0.13) 4px
  );
}

.help {
  position: fixed;
  z-index: 2;
  top: max(8px, env(safe-area-inset-top));
  left: max(8px, env(safe-area-inset-left));
  display: grid;
  gap: 3px;
  max-width: calc(100vw - 16px);
  padding: 6px 8px;
  border: 2px solid #5fe8d8;
  background: rgba(16, 25, 54, 0.78);
  color: #fff5d1;
  font-size: 10px;
  line-height: 1.25;
  text-shadow: 1px 1px #101936;
  pointer-events: none;
}

.help strong {
  color: #f4c542;
  letter-spacing: 2px;
}

[hidden] { display: none !important; }

.prompt { position: fixed; z-index: 3; bottom: max(18px, env(safe-area-inset-bottom)); left: 50%; width: max-content; max-width: calc(100vw - 32px); transform: translateX(-50%); padding: 8px 12px; border: 2px solid #f4c542; background: rgba(16, 25, 54, .92); color: #fff5d1; font-size: 12px; text-align: center; text-shadow: 1px 1px #101936; }
.touch-controls { display: none; }
.game-modal { position: fixed; z-index: 10; inset: 0; display: grid; place-items: center; padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left)); background: rgba(10, 12, 30, .92); }
.game-window { display: grid; grid-template-rows: auto 1fr; width: min(960px, 100%); height: min(720px, 100%); border: 4px solid #5fe8d8; background: #101936; box-shadow: 8px 8px 0 #e53b44; }
.game-window-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 42px; padding: 6px 8px 6px 12px; background: #3d3a74; color: #fff5d1; }
.game-window-header h1 { margin: 0; overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.close-game, .d-pad-button, .action-button { border: 2px solid #101936; border-radius: 0; background: #f4c542; color: #101936; font: bold 14px monospace; box-shadow: 3px 3px 0 #101936; touch-action: none; user-select: none; -webkit-user-select: none; }
.close-game { padding: 7px 12px; }
#game-frame { width: 100%; height: 100%; border: 0; background: #fff; }

@media (pointer: coarse), (max-width: 720px) {
  .prompt { bottom: max(116px, calc(env(safe-area-inset-bottom) + 108px)); }
  .touch-controls { position: fixed; z-index: 4; inset: 0; display: block; pointer-events: none; }
  .d-pad { position: absolute; bottom: max(12px, env(safe-area-inset-bottom)); left: max(12px, env(safe-area-inset-left)); display: grid; grid-template: repeat(3, 38px) / repeat(3, 38px); gap: 3px; pointer-events: auto; }
  .d-pad-button { width: 38px; height: 38px; padding: 0; }
  .d-pad-up { grid-area: 1 / 2; }
  .d-pad-left { grid-area: 2 / 1; }
  .d-pad-down { grid-area: 2 / 2; }
  .d-pad-right { grid-area: 2 / 3; }
  .action-button { position: absolute; right: max(18px, env(safe-area-inset-right)); bottom: max(28px, calc(env(safe-area-inset-bottom) + 16px)); width: 62px; height: 62px; border-color: #fff5d1; border-radius: 50%; background: #e53b44; color: #fff5d1; font-size: 22px; pointer-events: auto; }
}