:root{--orange:#ff5500;--dark:#111;--dark-alt:#1a1a1a}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Roboto',sans-serif;background:#0d0d0d;color:#fff;padding:20px;min-height:100vh;display:flex;flex-direction:column;align-items:center}
h1{color:var(--orange);margin-bottom:25px;font-size:2.2rem;text-align:center}
.wrapper{background:var(--dark-alt);width:100%;max-width:500px;border-radius:12px;padding:30px 25px;box-shadow:0 4px 14px rgba(0,0,0,.6);text-align:center}
label{display:block;margin-bottom:8px}
input{width:100%;padding:10px;border-radius:6px;border:1px solid #333;background:#222;color:#fff;margin-bottom:15px}
#receive{margin:10px 0;font-weight:500}
button,.back{display:block;width:200px;margin:20px auto 0;padding:12px 35px;border:none;border-radius:6px;font-size:1em;font-weight:500;text-align:center;cursor:pointer;color:#fff;text-decoration:none}
button{background:var(--orange)}
button:hover{background:#ff7026}
.back{background:#444;margin-top:15px}