[bt_hidden=true] { 
        display: none !important; 
        visibility: hidden !important; 
        height: 0 !important; 
      }
/* Hide all variations by default - prevents flicker */
[bt-variation]:not(.bt-show-variation),
[data-bt-variation]:not(.bt-show-variation),
[class*='ab-var-']:not(.bt-show-variation) {
    opacity: 0 !important;
    pointer-events: none !important;
}

/* Show the first variation of each experiment - prevents CLS */
[bt-variation].bt-first-variation:not(.bt-show-variation),
[data-bt-variation].bt-first-variation:not(.bt-show-variation),
[class*='ab-var-'].bt-first-variation {
    opacity: 1 !important;
    pointer-events: auto !important;
}

/* After test setup complete, fully remove non-selected variations from DOM */
body.ab-test-setup-complete [bt-variation]:not(.bt-show-variation),
body.ab-test-setup-complete [data-bt-variation]:not(.bt-show-variation),
body.ab-test-setup-complete [class*='ab-var-']:not(.bt-show-variation) {
    display: none !important;
}

/* Show selected variation */
.bt-show-variation {
    opacity: 1 !important;
    pointer-events: auto !important;
}