.overlay-btn {
  position: absolute;
  background: rgba(32, 32, 32, 0.7);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  user-select: none;
  padding: 0;
  font-family: var(--font-ui);
}

.overlay-btn:hover {
  border-color: #fff;
  border-width: 1.5px;
}

.overlay-btn.pill {
  border-radius: 10px;
}

.overlay-btn.highlight {
  background: rgba(255, 193, 7, 0.85);
  border-color: #ffc107;
  color: #000;
}

.overlay-btn .btn-label {
  font-size: 7px;
  font-weight: 700;
  opacity: 0.8;
  line-height: 1;
}

.overlay-btn .key-label {
  font-size: 11px;
  font-weight: 700;
  color: #fff064;
  line-height: 1;
  margin-top: 1px;
}

.overlay-btn.highlight .key-label { color: #000; }

/* ABXY color variants */
.overlay-btn.btn-x { background: rgba(30, 107, 200, 0.7); border-color: rgba(0, 102, 204, 0.5); }
.overlay-btn.btn-y { background: rgba(200, 160, 0, 0.7); border-color: rgba(255, 165, 0, 0.5); }
.overlay-btn.btn-y .btn-label,
.overlay-btn.btn-y .key-label { color: #ff0; }
.overlay-btn.btn-a { background: rgba(34, 139, 34, 0.7); border-color: rgba(50, 205, 50, 0.5); }
.overlay-btn.btn-b { background: rgba(139, 0, 0, 0.7); border-color: rgba(220, 20, 60, 0.5); }

/* Double line for mapped buttons */
.overlay-btn.mapped {
  justify-content: center;
  gap: 1px;
}

.overlay-btn.mapped .btn-label {
  font-size: 7px;
  opacity: 0.7;
}

.overlay-btn.mapped .key-label {
  font-size: 12px;
  font-weight: 700;
}