.learner-preview-dialog{width:min(1380px,calc(100% - 32px));max-width:none;height:min(920px,calc(100dvh - 32px));max-height:none;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--surface);color:inherit;overflow:hidden}
.learner-preview-dialog[open]{display:flex;flex-direction:column;gap:12px}
.learner-preview-dialog::backdrop{background:#10271dcc}
.learner-preview-header{display:flex;align-items:center;justify-content:space-between;gap:16px}
.learner-preview-header h2{margin:0;font-size:1.25rem}
.learner-preview-sizes{display:flex;flex-wrap:wrap;gap:6px}
.learner-preview-sizes button[aria-pressed=true]{background:var(--green);border-color:var(--green);color:white}
.learner-preview-status{margin:0;color:var(--muted);font-size:.82rem;overflow-wrap:anywhere}
.learner-preview-status[role=alert]{color:var(--danger)}
.learner-preview-stage{position:relative;flex:1;min-height:120px;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:var(--cream)}
.learner-preview-stage iframe{position:absolute;top:0;border:0;transform-origin:top left;max-width:none;background:var(--cream)}
@media(max-width:540px){.learner-preview-dialog{width:calc(100% - 12px);height:calc(100dvh - 12px);padding:12px;border-radius:12px}.learner-preview-header h2{font-size:1.1rem}.learner-preview-sizes button{flex:1;padding:9px 12px}}