*{box-sizing:border-box;margin:0;padding:0}html,body{-webkit-user-select:none;user-select:none;background:#1a1a1e;width:100%;height:100%;font-family:Segoe UI,system-ui,-apple-system,sans-serif;overflow:hidden}#game-canvas{width:100%;height:100%;display:block}#ui-overlay{pointer-events:none;z-index:10;width:100%;height:100%;position:fixed;top:0;left:0}#ui-overlay>*{pointer-events:auto}.btn{cursor:pointer;letter-spacing:.5px;border:none;outline:none;font-family:inherit;transition:all .15s}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{color:#fff;background:#3a3a42;border-bottom:3px solid #222226;border-radius:6px;padding:11px 28px 13px;font-size:14px;font-weight:700}.btn-primary:hover{background:#444450}.btn-primary:active{border-bottom-width:1px;padding-top:13px}.btn-secondary{color:#aaa;background:#2e2e34;border-bottom:3px solid #1e1e22;border-radius:6px;padding:11px 28px 13px;font-size:14px;font-weight:600}.btn-secondary:hover{background:#36363e}.btn-secondary:active{border-bottom-width:1px;padding-top:13px}.btn-sm{color:#aaa;background:#2e2e34;border-bottom:2px solid #1e1e22;border-radius:4px;padding:3px 12px 5px;font-size:11px;font-weight:600}.btn-sm:hover{background:#36363e}.btn-sm:active{border-bottom-width:0;padding-top:4px}.btn-danger{color:#e86060;background:#3a2020;border-bottom:2px solid #2a1414;border-radius:4px;padding:3px 12px 5px;font-size:11px;font-weight:600}.btn-danger:hover{background:#442828}.btn-danger:active{border-bottom-width:0;padding-top:4px}