/* Soap-bubble field — rescued from Daniel's attempt. Shared across directions. */
.bubble-field{position:fixed;inset:0;overflow:hidden;pointer-events:none}
.bubble-field--back{z-index:1}
.bubble-field--front{z-index:6}
.bubble-sprite{position:absolute;top:0;left:0;transform-origin:center;will-change:transform;pointer-events:auto;cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}
.bubble-sprite.is-popping{pointer-events:none}
.bubble-fps{position:fixed;left:8px;bottom:8px;z-index:9999;display:none;font:12px/1.2 ui-monospace,monospace;color:#0009;background:#ffffffcc;padding:3px 7px;border-radius:7px}