:root{
  --bg:#f7fafc;
  --card:#ffffff;
  --ink:#1a202c;
  --muted:#475569;
  --accent:#1e40af;
  --accent-2:#2563eb;
  --ring:#93c5fd;
  --border:#e2e8f0;
  --danger:#e11d48;
  --ok:#166534;
  --err:#b91c1c;
}

*{box-sizing:border-box}

body{
  margin:5px;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#eef2ff 0%, #f8fafc 30%);
}

.container{max-width:980px;margin:48px auto;padding:0 16px}

/* Header + top logo */
.header{text-align:center;margin-bottom:24px}
.logo-box{display:flex;justify-content:center;margin-bottom:12px}
.logo{max-height:80px;width:auto}
.header .brand h1{margin:0;font-size:1.35rem;letter-spacing:.2px}
.header .brand h2{margin:6px 0 8px;color:var(--accent);font-size:1.05rem}

.notice{
  background:var(--card);
  border:1px solid var(--border);
  padding:12px 16px;border-radius:12px;color:#0f172a;
  box-shadow:0 6px 18px rgba(37,99,235,.08)
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  margin:18px 0;
  box-shadow:0 10px 28px rgba(15,23,42,.06);
}
.card h3{margin:0 0 12px;font-size:1.05rem;color:#0f172a}

.grid{display:grid;gap:12px}
.grid.one{grid-template-columns:1fr}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.grid.one,.grid.two,.grid.three{grid-template-columns:1fr}}

label{display:flex;flex-direction:column;font-size:.9rem;gap:6px}
.field-label{display:inline-flex;align-items:baseline;gap:4px}
.req{color:var(--danger);font-weight:700;line-height:1}

/* inputs full width */
input,select,textarea{
  width:100%;
  max-width:100%;
  box-sizing:border-box;
  padding:10px 12px;border:1px solid var(--border);border-radius:10px;
  font:inherit;background:#fff;outline:none;transition:border .15s, box-shadow .15s;
}
input::placeholder,textarea::placeholder{color:#94a3b8}
input:focus,select:focus,textarea:focus{
  border-color:var(--accent-2);
  box-shadow:0 0 0 4px var(--ring);
}

/* span full width in grids */
.full{grid-column:1 / -1}

/* live metric display */
.metric-row{
  display:flex;align-items:center;gap:8px;margin-top:6px;
  padding:8px 12px;border:1px dashed var(--border);border-radius:10px;background:#fbfdff;
}
.metric-label{font-weight:600;color:#0f172a}
.metric-value{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}

/* actions */
.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:8px}
button{
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  color:#fff;border:none;border-radius:12px;
  padding:14px 18px;
  font-weight:700;
  font-size:1.05rem;
  cursor:pointer;
  box-shadow:0 8px 16px rgba(37,99,235,.25);
  flex:1 1 auto;
  text-align:center;
}
button:disabled{opacity:.6;cursor:not-allowed}

/* secondary */
.btn-secondary{
  background:#ffffff;
  color:var(--accent-2);
  border:1px solid var(--accent-2);
  box-shadow:none;
}

/* mobile buttons full width */
@media (max-width:600px){
  .actions{flex-direction:column;align-items:stretch}
  .actions button{width:100%}
}

/* status */
.status{margin:0}
.status.ok{color:var(--ok)}
.status.err{color:var(--err)}

.footer{margin:28px 0 8px;text-align:center;color:var(--muted);font-size:.9rem}

/* utility */
.hidden{display:none}