.popup-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.6);z-index:1000;display:flex;justify-content:center;align-items:flex-start;padding-top:120px}.popup-content{background:#fff;padding:20px 30px;border-radius:8px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.2);max-width:400px;margin-top:60px}.popup-content h3{margin-top:0;color:#d9534f}.popup-content button{margin-top:15px;padding:8px 16px;border:none;background-color:#007bff;color:#fff;border-radius:5px;cursor:pointer}body.modal-open{overflow:hidden}