@import url("https://fonts.googleapis.com/css2?family=Permanent+Marker&display=swap");
/* A doodled notebook on a wooden desk: the canvas is the graph-paper page
   (game.js draws the grid, margin rule and pencil doodles), framed by a
   spiral binding on the left and sitting on warm desk planks. */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background:
    radial-gradient(900px 500px at 50% 0%, rgba(255, 235, 200, 0.2), rgba(255, 235, 200, 0) 70%),
    repeating-linear-gradient(90deg, rgba(60, 32, 10, 0.16) 0 2px, rgba(255, 230, 190, 0.05) 2px 5px, rgba(0, 0, 0, 0) 5px 128px),
    linear-gradient(180deg, #9a6b3f, #7c5330);
  background-color: #8a5e37;
  color: #fff;
  font-family: "Segoe UI", system-ui, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

#game-container {
  position: relative;
  /* the page's edge and the desk shadow under the notebook */
  border-radius: 6px 14px 14px 6px;
  box-shadow:
    -3px 0 0 #efe9d8, 3px 0 0 #efe9d8, 0 3px 0 #efe9d8, 0 -3px 0 #efe9d8,
    -3px 4px 0 #d9d2bd, 3px 6px 0 #d9d2bd,
    6px 18px 30px rgba(40, 20, 5, 0.5);
  /* Width is derived from height by aspect-ratio, so height has to be capped
     by the viewport WIDTH too: otherwise a 390px phone got a 400px board and
     the page scrolled sideways. The 1.5rem allows for body padding. */
  height: min(92vh, 600px, calc((100vw - 1.5rem) * 600 / 400));
  aspect-ratio: 400 / 600;
}

#game {
  display: block;
  width: 100%;
  height: 100%;
  background: #fdfbf2;
  border-radius: 6px 14px 14px 6px;
  image-rendering: optimizeQuality;
}
/* the spiral binding, hanging over the page's left edge */
#game-container::before {
  content: "";
  position: absolute;
  left: -17px;
  top: 4%;
  bottom: 4%;
  width: 30px;
  z-index: 5;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='30' height='34' viewBox='0 0 30 34'%3E%3Ccircle cx='17' cy='17' r='5.2' fill='%230f0d18'/%3E%3Cpath d='M4 24 C 4 10 26 10 26 21' fill='none' stroke='%23555d68' stroke-width='4.6' stroke-linecap='round'/%3E%3Cpath d='M4 24 C 4 10 26 10 26 21' fill='none' stroke='%23c8cfd8' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E") center top / 30px 34px repeat-y;
}

#hint {
  font-family: "Permanent Marker", "Segoe UI", cursive;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: #ffe9c8;
  opacity: 0.85;
  text-align: center;
  text-shadow: 0 1px 2px rgba(40, 20, 5, 0.6);
}

#mute-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 38px;
  height: 38px;
  border: 2px solid #2f3550;
  border-radius: 10px;
  background: #fffdf4;
  color: #2f3550;
  font-size: 18px;
  cursor: pointer;
  box-shadow: 0 2px 0 #2f3550;
}
#mute-btn:hover { background: #f4efdd; }

/* Touch controls */
#touch-controls {
  position: absolute;
  inset: auto 0 0 0;
  display: none;
  justify-content: space-between;
  padding: 0 12px 14px;
  pointer-events: none;
}
.touch-btn {
  pointer-events: auto;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.28);
  color: #233;
  font-size: 30px;
  font-weight: bold;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.touch-btn:active { background: rgba(255, 255, 255, 0.55); }
.touch-btn.shoot { background: rgba(120, 200, 255, 0.42); color: #fff; }
.touch-btn.shoot:active { background: rgba(120, 200, 255, 0.7); }

/* Show touch controls only on coarse pointers (phones/tablets) */
@media (pointer: coarse) {
  #touch-controls { display: flex; }
  #hint { display: none; }
}