:root{
  --bg:#f4f6fb;
  --panel:#fff;
  --text:#111827;
  --accent:#2563eb;
  --accent-dark:#1d4ed8;
  --border:#e2e8f0;
  --muted:#6b7280;
}
*{box-sizing:border-box;font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;}
body{margin:0;background:var(--bg);color:var(--text);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:32px;}
body.app-ready{align-items:flex-start;justify-content:center;}
.hidden{display:none !important;}
.login-card{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:24px;}
.login-box{width:100%;max-width:380px;background:var(--panel);padding:32px;border-radius:18px;box-shadow:0 25px 60px rgba(15,23,42,0.15);display:flex;flex-direction:column;gap:12px;}
.login-box h1{margin:0;font-size:1.5rem;}
.login-box p{margin:0 0 4px;color:var(--muted);}
input{width:100%;border:1px solid var(--border);border-radius:10px;padding:12px;font-size:1rem;}
.login-box button{margin-top:4px;}
.container{max-width:900px;width:100%;display:flex;flex-direction:column;gap:18px;}
header .toolbar{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;}
header h1{margin:0;font-size:1.5rem;}
header p{margin:4px 0 0;color:var(--muted);}
.panel{background:var(--panel);padding:18px;border-radius:14px;box-shadow:0 15px 40px rgba(15,23,42,0.08);display:flex;flex-direction:column;gap:10px;}
.panel h2{margin:0;font-size:1.1rem;}
label{font-weight:600;}
textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:12px;font-size:1rem;min-height:200px;resize:vertical;}
textarea[readonly]{background:#f9fafb;}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
button{border:0;border-radius:999px;padding:10px 20px;font-size:0.95rem;cursor:pointer;transition:transform 0.15s ease,box-shadow 0.15s ease;background:var(--accent);color:#fff;box-shadow:0 10px 20px rgba(37,99,235,0.35);}
button:hover:not([disabled]){transform:translateY(-1px);background:var(--accent-dark);}
button:disabled{opacity:0.6;cursor:not-allowed;box-shadow:none;}
button.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent);box-shadow:none;}
button.small{padding:8px 16px;font-size:0.85rem;}
.status{color:var(--muted);min-height:1.2em;}
@media (max-width:640px){body{padding:18px;}header .toolbar{flex-direction:column;}
button,.row{width:100%;}button,.row button{width:100%;text-align:center;}}