:root {
  --red: #c62828;
  --amber: #ef6c00;
  --green: #2e7d32;
  --ink: #1f1f1f;
  --muted: #666;
  --line: #e0e0e0;
  --brand: #1a3c6e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: #fafafa;
}

.top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}
.top .muted { margin-left: auto; color: rgba(255,255,255,.7); font-weight: 400; font-size: 12px; }

main { padding: 14px; }

.lead { font-size: 16px; font-weight: 600; margin: 0 0 6px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.label { margin: 10px 0 4px; font-weight: 600; }

button {
  font: inherit;
  border-radius: 6px;
  padding: 10px 14px;
  cursor: pointer;
  border: 1px solid transparent;
}
button.primary { width: 100%; background: var(--brand); color: #fff; font-weight: 600; font-size: 15px; }
button.primary:hover { filter: brightness(1.1); }
button.secondary { background: #fff; border-color: var(--brand); color: var(--brand); font-weight: 600; }
button.link { background: none; color: var(--brand); text-decoration: underline; padding: 10px 6px; }
button:disabled { opacity: .6; cursor: default; }

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}
.card-head { padding: 14px 16px; color: #fff; }
.card-head.RED { background: var(--red); }
.card-head.AMBER { background: var(--amber); }
.card-head.GREEN { background: var(--green); }
.card-title { font-size: 18px; font-weight: 700; }
.card-score { opacity: .9; margin-top: 2px; font-size: 13px; }
.card-body { padding: 14px 16px; line-height: 1.45; }
.card-body ul { margin: 0 0 8px; padding-left: 18px; }
.card.error { border-color: var(--red); }

.action {
  margin: 12px 0;
  padding: 10px 12px;
  background: #f5f5f5;
  border-left: 4px solid var(--brand);
  font-weight: 600;
}
.action.RED { border-left-color: var(--red); }
.action.AMBER { border-left-color: var(--amber); }
.action.GREEN { border-left-color: var(--green); }

details { margin-top: 8px; font-size: 12px; color: var(--muted); }
details ul { padding-left: 16px; }

.actions { display: flex; gap: 8px; align-items: center; margin: 12px 0 6px; flex-wrap: wrap; }

.spinner {
  width: 32px; height: 32px; margin: 30px auto 12px;
  border: 4px solid var(--line);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin .9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#busy-text { text-align: center; color: var(--muted); }