*{box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,'Helvetica Neue',sans-serif}
body{margin:0;background:#0b1a2b;color:#f5f0e6}
.screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}
.hidden{display:none}
nav{display:flex;gap:8px;margin-bottom:20px}
button{padding:12px 14px;border-radius:12px;border:none;background:#e6c87a;color:#0b1a2b;font-weight:700}
input{padding:12px;border-radius:10px;border:1px solid #e6c87a;background:#10233f;color:#f5f0e6;margin-bottom:10px}