*{margin:0;padding:0;box-sizing:border-box;}
body{background:black;height:100vh;overflow:hidden;font-family:Arial;}
.screen{position:fixed;inset:0;display:none;justify-content:center;align-items:center;color:white;font-size:36px;}
.black{background:black;}
#startScreen{display:flex;background:linear-gradient(45deg,#ff4d6d,#8338ec,#ffb703);cursor:pointer;}
video{width:100%;height:100%;object-fit:contain;background:black;}
#proposalScreen{background:url('proposal.jpg') center/contain no-repeat;}
.buttons{position:absolute;bottom:40px;width:100%;text-align:center;}
button{padding:14px 32px;border:none;border-radius:12px;font-size:18px;margin:10px;cursor:pointer;}
#yesBtn{background:#ff4d6d;color:white;}
#noBtn{background:#ccc;color:black;}
.text{text-align:center;font-size:42px;}
#backBtn{position:fixed;top:20px;left:20px;background:#444;color:white;border:none;border-radius:10px;padding:10px 20px;cursor:pointer;display:none;}
#fireworks{width:100%;height:100%;}