/* Shared buttons and press feedback */
.btn {
  min-height: 2.75rem;
  padding: 0 1.25rem;
  border: 0;
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: background-color 0.15s, filter 0.15s, transform 0.1s;
}
.btn:disabled { opacity: 0.5; cursor: default; }
@media (hover: hover) { .btn:hover:not(:disabled) { filter: brightness(1.08); } }
.btn.is-pressed:not(:disabled) { transform: scale(0.96); filter: brightness(0.92); }
.toggle.is-pressed .switch { filter: brightness(0.92); }
.btn-primary { background: var(--head); color: var(--on-accent); font-weight: 600; }
.btn:focus-visible { outline: 3px solid var(--head); outline-offset: 2px; }

/* Mobile D-pad and Fire button */
.mobile-controls {
  display: none;
  position: relative;
  justify-content: center;
  width: min(calc(100vw - 2rem), 32rem);
  touch-action: none;
  user-select: none;
}
.dpad {
  display: grid;
  grid-template-columns: repeat(3, var(--dpad-size));
  grid-template-rows: repeat(2, var(--dpad-size));
  gap: 0.75rem;
}
.dpad .btn { padding: 0; font-size: 1.5rem; transition: background-color 0.08s, transform 0.08s; }
.dpad .direction-icon { width: 1.5rem; height: 1.5rem; fill: currentColor; vertical-align: middle; }
.mobile-controls .btn.is-pressed { transform: none; }
.dpad .btn.is-pressed { background: var(--head); color: var(--on-accent); }
.dpad [data-direction="up"] { grid-column: 2; }
.mobile-controls .fire-btn {
  position: absolute;
  top: 0;
  right: 0;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  gap: 0.2rem;
  padding: 0;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.mobile-controls .fire-btn[hidden] { display: none; }
.fire-charge { display: flex; align-items: center; gap: 0.25rem; }
.mobile-controls .fire-btn .icon {
  width: 1.35rem;
  height: 1.35rem;
  filter: drop-shadow(0 0 0.18rem rgba(0, 0, 0, 0.18));
}
.dpad [data-direction="left"] { grid-row: 2; grid-column: 1; }
.dpad [data-direction="down"] { grid-row: 2; grid-column: 2; }
.dpad [data-direction="right"] { grid-row: 2; grid-column: 3; }
@media (pointer: coarse) {
  :root {
    --dpad-size: min(4.5rem, calc((100vw - 3.5rem) / 3));
  }
  .app { gap: 0.5rem; padding-block: 0.5rem; }
  .mobile-controls { display: flex; }
}

/* Icon buttons */
.icon-btn {
  width: auto;
  padding: 0;
  font-size: 1.2rem;
}