*{box-sizing:border-box}
body{font-family:Segoe UI,sans-serif;background:#f7fafc;padding:3rem;margin:0}
.message-card{max-width:36rem;margin:auto;background:white;padding:2rem;border-radius:12px;box-shadow:0 4px 12px #0002}
.message-card-wide{max-width:42rem}
.message-error{color:#9b2c2c}
.message-success{color:#276749}
.message-input{display:block;width:100%;padding:.75rem;margin:.5rem 0 1rem}
.message-button{padding:.75rem 1.25rem}