:root {
  --bg: #f8fafc;
  --panel: #ffffff;
  --accent: #0b7285;
  --muted: #64748b;
  --danger: #c3423f;
}

* { box-sizing: border-box; font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial; }
body { margin: 0; background: var(--bg); color: #0f172a; padding: 24px; }
main { max-width: 760px; margin: 0 auto; }
h1 { margin-top: 0; }
.panel { background: var(--panel); padding: 16px; border-radius: 8px; box-shadow: 0 1px 2px rgba(2,6,23,0.06); margin-bottom: 16px; }
label { display: block; margin-bottom: 8px; font-size: 14px; color: var(--muted); }
input, select { width: 100%; padding: 10px; border-radius: 6px; border: 1px solid #e6eef5; margin-top: 6px; font-size: 16px; }
.buttons { display:flex; gap: 8px; margin-top: 8px; }
button { padding: 10px 14px; border-radius: 6px; border: none; cursor: pointer; background: var(--accent); color: white; }
button[disabled] { opacity: 0.6; cursor: not-allowed; }
pre.status { background: #0f172a; color: #e6eef5; padding: 12px; border-radius: 6px; min-height: 80px; overflow:auto; white-space: pre-wrap; }
footer { text-align: center; color: var(--muted); font-size: 13px; margin-top: 4px; }