body,h1,h2,p{margin:0;padding:0}body{margin:0;font-family:Arial,sans-serif;height:100vh;background-color:#000;background-image:url(/background.jpg);background-size:cover;background-position:50%}.container,body{display:flex;justify-content:center;align-items:center;color:#fff;text-align:center}.container{max-width:800px;padding:30px;background-color:rgba(0,0,0,.7);border-radius:12px;flex-direction:column}h1{font-size:56px;font-weight:700;text-shadow:3px 3px 6px rgba(0,0,0,.8)}h1,h2{margin-bottom:20px}h2{font-size:24px}p{margin-bottom:20px;font-weight:500}button,p{font-size:20px;text-shadow:2px 2px 4px rgba(0,0,0,.7)}button{margin-top:20px;padding:15px 30px;background-color:#007bff;color:#fff;border:none;border-radius:30px;cursor:pointer;font-weight:700;transition:background-color .3s ease}.btn-start-chat:active{background-color:#1e90d6}.btn-start-chat:hover{background-color:#0056b3}