:root {
  color-scheme: dark;
  --sa-top: env(safe-area-inset-top, 0px);
  --sa-bottom: env(safe-area-inset-bottom, 0px);
  --sa-left: env(safe-area-inset-left, 0px);
  --sa-right: env(safe-area-inset-right, 0px);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  position: fixed;
  inset: 0;
  background: #0b1c38;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  touch-action: none;
  user-select: none;
  overscroll-behavior: none;
}

#wrap {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  background: #0b1c38;
}

#wrap:fullscreen,
#wrap:-webkit-full-screen {
  width: 100%;
  height: 100%;
  background: #0b1c38;
}

#game {
  display: block;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#btn-music {
  position: absolute;
  top: max(10px, env(safe-area-inset-top));
  right: max(10px, env(safe-area-inset-right));
  z-index: 3;
  appearance: none;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 4px solid #1a3a6b;
  border-radius: 999px;
  padding: 8px 14px;
  font: 700 16px/1 "Trebuchet MS", sans-serif;
  color: #1a3a6b;
  background: rgba(255, 210, 74, 0.95);
  box-shadow: 0 4px 0 #c79212;
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
}

#btn-music .icon {
  font-size: 18px;
}

#btn-music.is-off {
  background: rgba(220, 220, 220, 0.95);
  color: #5a5a5a;
  box-shadow: 0 4px 0 #888;
}

#btn-music.is-off .icon {
  text-decoration: line-through;
}

#btn-music:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #c79212;
}

#touch {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 12px max(16px, env(safe-area-inset-right)) calc(16px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  pointer-events: none;
  z-index: 2;
}

#touch .dpad,
#btn-jump {
  pointer-events: auto;
}

.dpad {
  display: flex;
  gap: 10px;
}

#touch button {
  appearance: none;
  border: 4px solid #1a3a6b;
  border-radius: 18px;
  min-width: 72px;
  min-height: 72px;
  font: 700 18px/1 "Trebuchet MS", sans-serif;
  color: #1a3a6b;
  background: rgba(255, 210, 74, 0.92);
  box-shadow: 0 4px 0 #c79212;
}

#btn-jump {
  min-width: 110px;
  border-radius: 999px;
}

#touch button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #c79212;
}