body{margin:0;padding:0;font-family:Segoe UI,sans-serif;background:linear-gradient(135deg,#000 0% 100%);height:100vh;display:flex;justify-content:center;align-items:center}.card{background:#fff;padding:40px;border-radius:20px;box-shadow:0 20px 60px #0000004d;text-align:center;max-width:400px}h1{color:#667eea;margin-bottom:20px}p{color:#666;line-height:1.8;margin-bottom:30px}button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:15px 40px;border-radius:25px;font-size:16px;font-weight:700;cursor:pointer;transition:transform .2s,box-shadow .2s}button:hover{transform:translateY(-2px);box-shadow:0 10px 25px #667eea66}button:active{transform:translateY(0)}.emoji{font-size:60px;margin-bottom:20px}#message{margin-top:20px;font-weight:700;color:#667eea;display:none}