:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1b1f24;
  --muted: #5f6b7a;
  --border: #d9dee5;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --ok: #15803d;
  --err: #b91c1c;
  --signal-weak: #926000;
  --warn-bg: #fef3c7;
  --warn-text: #78350f;
  --log-bg: #0f172a;
  --log-text: #e2e8f0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --card: #161b22;
    --text: #e6edf3;
    --muted: #8b949e;
    --border: #30363d;
    --accent: #3b82f6;
    --ok: #4ade80;
    --err: #f87171;
    --signal-weak: #fbbf24;
    --warn-bg: #3b2f0b;
    --warn-text: #fde68a;
    --log-bg: #010409;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    15px/1.5 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
}
main {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px 32px;
}
h1 {
  font-size: 22px;
  margin: 0 0 4px;
}
p.sub {
  margin: 0 0 16px;
  color: var(--muted);
}
a {
  color: var(--accent);
}
section,
details.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 14px;
}
h2 {
  font-size: 15px;
  margin: 0 0 10px;
}
ul {
  margin: 0;
  padding-left: 20px;
}
li {
  margin: 4px 0;
}
label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 4px;
}
label.inline {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}
input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 16px;
}
button {
  min-height: 40px;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font: inherit;
  cursor: pointer;
}
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}
button:disabled {
  opacity: 0.5;
  cursor: default;
}
.row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.banner {
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 14px;
  background: var(--warn-bg);
  color: var(--warn-text);
}
dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 2px 14px;
  margin: 0;
  font-size: 14px;
}
dt {
  color: var(--muted);
}
dd {
  margin: 0;
  font-family: ui-monospace, Menlo, monospace;
  word-break: break-all;
}
.status {
  font-weight: 600;
}
.ok {
  color: var(--ok);
}
.err {
  color: var(--err);
}
p.hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
}
p.msg {
  margin: 10px 0 0;
  font-size: 14px;
}
p.msg:empty {
  display: none;
}
.networks {
  margin: 12px 0;
}
.network-list {
  max-height: 260px;
  overflow: auto;
  margin-top: 10px;
}
.network-list table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.network-list th,
.network-list td {
  padding: 6px 8px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.network-list th:first-child,
.network-list td:first-child {
  overflow-wrap: anywhere;
}
.network-list th:last-child,
.network-list td:last-child {
  text-align: right;
  white-space: nowrap;
}
.signal-good {
  color: var(--ok);
}
.signal-weak {
  color: var(--signal-weak);
}
.signal-poor {
  color: var(--err);
}
.signal-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
}
.network-list .signal-note {
  margin: 8px 0 0;
  font-size: 12px;
}
details.card summary {
  cursor: pointer;
  font-weight: 600;
}
pre#log {
  background: var(--log-bg);
  color: var(--log-text);
  border-radius: 8px;
  padding: 12px;
  font:
    12px/1.5 ui-monospace,
    Menlo,
    monospace;
  max-height: 320px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 12px 0 0;
}
footer {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 0 16px 32px;
}