.sp-preview-frame{position:relative}
.sp-preview-frame iframe{width:100%;display:block}
.sp-preview-expand{position:absolute;top:10px;right:10px;z-index:20;width:34px;height:34px;border-radius:8px;border:1px solid rgba(15,23,42,.14);background:rgba(255,255,255,.92);cursor:pointer;font-size:15px;line-height:1;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 4px rgba(15,23,42,.18);transition:background .15s,transform .15s;color:#1f2937}
.sp-preview-expand:hover{background:#ffffff;transform:scale(1.06)}
.sp-preview-frame.sp-preview-expanded{position:fixed;top:6px;left:6px;right:6px;bottom:6px;z-index:9999;background:#ffffff;border-radius:12px;box-shadow:0 24px 64px rgba(0,0,0,.4);display:flex;flex-direction:column;overflow:hidden}
.sp-preview-frame.sp-preview-expanded iframe{flex:1 1 auto;height:100%}
.sp-preview-backdrop{position:fixed;inset:0;background:rgba(8,10,20,.55);z-index:9998;opacity:0;pointer-events:none;transition:opacity .15s}
.sp-preview-backdrop.sp-preview-backdrop-active{opacity:1;pointer-events:auto}
body.sp-preview-lock{overflow:hidden}