:root {
  --bg: #f6f7f9;
  --fg: #1a1f2b;
  --muted: #5b6473;
  --card: #ffffff;
  --border: #e3e6ec;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --good: #15803d;
  --good-bg: #dcfce7;
  --warning: #b45309;
  --warning-bg: #fef3c7;
  --critical: #b91c1c;
  --critical-bg: #fee2e2;
  --info: #1e40af;
  --info-bg: #dbeafe;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

.topbar {
  background: var(--fg);
  color: white;
  padding: 28px 0;
}
.topbar h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
}
.topbar .tagline {
  margin: 4px 0 0;
  color: #c8cdd6;
  font-size: 15px;
}

main {
  padding: 32px 24px;
}

.check-form {
  display: flex;
  gap: 12px;
  align-items: stretch;
  margin-top: 8px;
}
.check-form input {
  flex: 1;
  padding: 12px 14px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--fg);
}
.check-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}
.check-form button {
  padding: 12px 20px;
  font-size: 16px;
  font-weight: 600;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.check-form button:hover { background: var(--accent-hover); }
.check-form button:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0);
  overflow: hidden;
}

.status {
  margin-top: 24px;
  padding: 14px 16px;
  border-radius: 8px;
  background: #eef2f7;
  color: var(--muted);
  font-size: 14px;
}
.status.error {
  background: var(--critical-bg);
  color: var(--critical);
}

.hidden { display: none; }

.report {
  margin-top: 32px;
  display: grid;
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
}
.card h2 {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
}
.card .small {
  font-size: 13px;
  color: var(--muted);
}

.overall-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.overall-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pill-good { background: var(--good-bg); color: var(--good); }
.pill-warning { background: var(--warning-bg); color: var(--warning); }
.pill-critical { background: var(--critical-bg); color: var(--critical); }
.pill-info { background: var(--info-bg); color: var(--info); }
.pill-neutral { background: #e5e7eb; color: #374151; }

.summary-counts {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}

table.bot-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.bot-table th, table.bot-table td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
table.bot-table th {
  font-weight: 600;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
table.bot-table tr:last-child td { border-bottom: none; }

.kv {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) 3fr;
  gap: 6px 16px;
  font-size: 14px;
}
.kv dt {
  color: var(--muted);
  font-weight: 500;
}
.kv dd {
  margin: 0;
  word-break: break-word;
}

.issue {
  border-left: 4px solid var(--border);
  padding: 12px 14px;
  margin-bottom: 10px;
  background: #fafbfd;
  border-radius: 0 8px 8px 0;
}
.issue.severity-critical { border-left-color: var(--critical); background: #fff5f5; }
.issue.severity-warning  { border-left-color: var(--warning); background: #fffbf0; }
.issue.severity-info     { border-left-color: var(--info); background: #f5f8ff; }

.issue h3 {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  gap: 8px;
  align-items: center;
}
.issue p {
  margin: 6px 0;
  font-size: 14px;
}
.issue .label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-right: 6px;
}

.footer {
  margin-top: 40px;
  padding: 18px 0 30px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px;
  background: #eef0f4;
  padding: 1px 5px;
  border-radius: 4px;
}

.bot-status-icon {
  display: inline-block;
  width: 10px; height: 10px; border-radius: 50%;
  margin-right: 6px; vertical-align: middle;
}
.dot-good { background: var(--good); }
.dot-warning { background: var(--warning); }
.dot-critical { background: var(--critical); }
.dot-neutral { background: #94a3b8; }

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  vertical-align: -2px;
  margin-right: 8px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.bot-status-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-right: 6px;
  vertical-align: middle;
  color: var(--muted);
}
.bot-status-label.label-good     { color: var(--good); }
.bot-status-label.label-warning  { color: var(--warning); }
.bot-status-label.label-critical { color: var(--critical); }

.signal-icon {
  display: inline-block;
  font-weight: 700;
  margin-right: 6px;
  vertical-align: middle;
}
.signal-icon.icon-good    { color: var(--good); }
.signal-icon.icon-warning { color: var(--warning); }

.issue details > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
}
.issue details > summary::-webkit-details-marker { display: none; }
.issue details[open] > summary {
  margin-bottom: 8px;
}
.issue details > summary::after {
  content: "▸";
  margin-left: auto;
  color: var(--muted);
  font-weight: 400;
  transition: transform 0.15s ease;
}
.issue details[open] > summary::after {
  transform: rotate(90deg);
}

@media (max-width: 600px) {
  .check-form { flex-direction: column; }
  .kv { grid-template-columns: 1fr; }
}