*{box-sizing:border-box}
:root{--navy:#0a1f3d;--navy-dark:#071730;--gold:#f2a900;--gold-dark:#d99500;--ink:#1c2530;--muted:#667085;--border:#dde2e7}
body{margin:0;background:#f4f6f8;color:var(--ink);font-family:"Open Sans",Segoe UI,Arial,sans-serif}
.shell{max-width:1180px;margin:0 auto;padding:0 20px 32px}
header,.panel,.toolbar{background:#fff;border:1px solid var(--border);border-radius:10px;padding:22px;box-shadow:0 2px 10px #0000000d}
header{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-dark) 100%);border:0;border-radius:0 0 10px 10px;color:#fff;margin:0 -20px 16px;padding:26px 20px;box-shadow:0 4px 16px #0a1f3d26}
header h1{margin:0 0 8px;font-family:"Poppins",Segoe UI,Arial,sans-serif;font-weight:800;font-size:1.6rem}
header p{margin:0;color:#c7d0dc}
.brand-logo{height:64px;width:auto;display:block;margin-bottom:8px}
.toolbar{margin:16px 0;display:flex;gap:12px;align-items:center}
.grid{display:grid;grid-template-columns:380px 1fr;gap:16px}
.panel h2{margin-top:0;font-family:"Poppins",Segoe UI,Arial,sans-serif;font-weight:700;color:var(--navy)}
label{display:block;font-weight:600;margin:12px 0}
label span,.hint{font-weight:400;color:var(--muted);font-size:.88rem}
input{display:block;width:100%;padding:9px;margin-top:5px;border:1px solid #b9c2cc;border-radius:5px;font-family:inherit}
input:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold)}
fieldset{border:1px solid #d4dae0;border-radius:6px}
legend{font-family:"Poppins",Segoe UI,Arial,sans-serif;font-weight:700;color:var(--navy)}
.check{font-weight:400;margin:7px 0}
.check input{display:inline;width:auto;margin-right:7px}
button{border:0;border-radius:5px;background:var(--gold);color:var(--navy-dark);padding:10px 16px;font-weight:700;cursor:pointer;transition:background .15s ease}
button:hover{background:var(--gold-dark)}
.secondary{background:var(--navy);color:#fff}
.secondary:hover{background:var(--navy-dark)}
.actions{display:flex;gap:10px;margin-top:18px}
.preview{padding:20px;border:1px dashed #aab4bf;background:#fff;overflow:auto}
#status{color:var(--navy);font-weight:600}
@media(max-width:850px){.grid{grid-template-columns:1fr}}