:root{
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:#eef2f6;color:#182230
}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:#eef2f6}
button,input,textarea{font:inherit}
button{border:0;border-radius:10px;font-weight:800;cursor:pointer}
button:disabled{opacity:.45;cursor:not-allowed}
.topbar{
  background:#132238;color:#fff;padding:18px max(16px,env(safe-area-inset-right)) 18px max(16px,env(safe-area-inset-left));
  display:flex;justify-content:space-between;align-items:center;gap:16px
}
.topbar h1{margin:0;font-size:clamp(22px,4vw,30px)}
.topbar p{margin:5px 0 0;color:#ccd6e2;font-size:13px}
.pill{border-radius:999px;padding:7px 11px;font-size:12px;font-weight:850;white-space:nowrap}
.pill.neutral{background:#64748b}.pill.working{background:#a16207}.pill.success{background:#15803d}.pill.error{background:#b91c1c}
.shell{width:min(1050px,calc(100% - 16px));margin:16px auto 40px;display:grid;gap:16px}
.card{background:#fff;border-radius:16px;padding:18px;box-shadow:0 3px 16px rgba(19,34,56,.08)}
h2{margin-top:0}.muted{color:#667085;font-size:13px}
.license-box{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:end}
.license-box label{display:grid;gap:6px;font-size:12px;font-weight:800;color:#344054}
.tip{margin:10px 0 12px;background:#fffbeb;border:1px solid #facc15;border-radius:11px;padding:10px;font-size:12px;color:#6d5200}
.reader{
  min-height:420px;background:#05080d;border-radius:14px;overflow:hidden;position:relative
}
.reader-placeholder{
  min-height:420px;display:grid;place-content:center;justify-items:center;gap:6px;color:#fff;text-align:center;padding:20px
}
.reader-placeholder span{color:#cbd5e1;font-size:13px}
.controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.primary,.secondary{padding:12px 14px}
.primary{background:#1769e0;color:#fff}.secondary{background:#e7edf4;color:#1f2937}
.message{margin-top:10px;color:#667085;font-size:13px;min-height:1.2em}
.form-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:11px}
label{display:grid;gap:5px;font-size:12px;font-weight:800;color:#344054}
label.wide{grid-column:span 2}
input,textarea{width:100%;border:1px solid #cfd7e2;border-radius:9px;padding:9px 10px;background:#fff;color:#111827;outline:none}
input:focus,textarea:focus{border-color:#1769e0;box-shadow:0 0 0 3px rgba(23,105,224,.12)}
textarea{min-height:150px;font:11px Consolas,monospace}
@media(max-width:760px){
  .topbar{flex-direction:column;align-items:flex-start}
  .license-box{grid-template-columns:1fr}
  .form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .reader,.reader-placeholder{min-height:360px}
}
@media(max-width:440px){
  .shell{width:min(100% - 8px,1050px);margin-top:4px}
  .card{padding:12px;border-radius:12px}
  .form-grid{grid-template-columns:1fr}
  label.wide{grid-column:span 1}
  .reader,.reader-placeholder{min-height:320px}
}