@font-face {
  font-family: "PySy";
  src: url("./assets/fonts/FreeSansBold.ttf") format("truetype");
  font-weight: bold;
  font-display: swap;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: #0d1b2a;
  color: #eee;
  font-family: "PySy", system-ui, sans-serif;
  overflow: hidden;
  overscroll-behavior: none;
}

#stage {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
}

/* Canvas keeps the 4:3 virtual aspect, letter-boxed inside the viewport.
   The engine sets the backing-store size (DPR-aware); CSS drives layout. */
#game {
  display: block;
  width: min(100vw, calc(100vh * 4 / 3));
  height: min(100vh, calc(100vw * 3 / 4));
  background: #000;
  touch-action: none;
  cursor: none;
  image-rendering: auto;
}

#boot {
  position: absolute;
  display: grid;
  gap: 0.75rem;
  place-items: center;
  color: #cfe0f0;
  font-size: 0.95rem;
  pointer-events: none;
}
#boot.hidden { display: none; }
#boot .bar {
  width: 240px;
  height: 8px;
  border: 1px solid #4a6b8a;
  border-radius: 999px;
  overflow: hidden;
  background: #12283a;
}
#boot .bar i {
  display: block;
  height: 100%;
  width: 0%;
  background: #6ea0d8;
  transition: width 0.15s linear;
}

#fs, #credits {
  position: absolute;
  bottom: 10px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 8px;
  background: rgba(20, 40, 60, 0.55);
  color: #cfe0f0;
  font-size: 18px;
  text-decoration: none;
  cursor: pointer;
  opacity: 0.35;
  transition: opacity 0.15s;
}
#fs { right: 10px; }
#credits { right: 52px; font-size: 15px; }
#fs:hover, #credits:hover, #stage:hover #fs, #stage:hover #credits { opacity: 0.9; }

/* In fullscreen the #game rule's min(100vw, 100vh*4/3) already fills the
   viewport at the correct 4:3 -- do NOT force 100vw/100vh, that squashes it. */

@media (prefers-reduced-motion: reduce) {
  #boot .bar i { transition: none; }
}