:root {
  color-scheme: light dark;
  --bg: #f6f7fb;
  --fg: #14161c;
  --muted: #5b6275;
  --card: #ffffff;
  --card-border: #e2e5ee;
  --accent: #2f6df0;
  --accent-fg: #ffffff;
  --error: #c0392b;
  --ok: #1f9d55;
  --warn: #b27600;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 22, 28, 0.04), 0 8px 24px rgba(20, 22, 28, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --fg: #e9ecf3;
    --muted: #9aa1b3;
    --card: #161a22;
    --card-border: #242a36;
    --accent: #5a8df5;
    --accent-fg: #0b0f17;
    --error: #ff7466;
    --ok: #58c98a;
    --warn: #e1b06c;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.6), 0 8px 24px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "SF Pro Text",
    "Segoe UI",
    Inter,
    system-ui,
    sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code {
  font-family:
    ui-monospace,
    SFMono-Regular,
    "SF Mono",
    Menlo,
    Consolas,
    monospace;
  background: rgba(127, 127, 127, 0.14);
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 0.92em;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  font-weight: 600;
  font-size: 18px;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  border-radius: 8px;
}

.brand-tag {
  color: var(--muted);
  font-weight: 500;
  padding-left: 6px;
  border-left: 1px solid var(--card-border);
}

.tagline {
  margin: 4px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 18px 20px 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-header h2 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.card-body {
  padding: 6px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.muted {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
  flex: none;
}

.dot[data-status="probing"] {
  background: var(--warn);
  animation: pulse 1s ease-in-out infinite;
}

.dot[data-status="ok"] {
  background: var(--ok);
}

.dot[data-status="error"] {
  background: var(--error);
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

details > summary {
  cursor: pointer;
  color: var(--accent);
  font-size: 14px;
  padding: 4px 0;
  outline: none;
}

details[open] button.primary {
  margin-top: 16px;
}

details[open] > summary {
  margin-bottom: 8px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 13px;
  color: var(--muted);
}

input[type="text"],
input[type="number"] {
  border: 1px solid var(--card-border);
  background: var(--bg);
  color: var(--fg);
  border-radius: 9px;
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  width: 100%;
  outline: none;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

input[type="text"]:focus,
input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(47, 109, 240, 0.18);
}

button,
a.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--fg);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 9px 14px;
  border-radius: 9px;
  cursor: pointer;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    transform 0.05s ease;
}

button:hover,
a.primary:hover {
  border-color: var(--accent);
  text-decoration: none;
}

button:active {
  transform: scale(0.99);
}

button.primary,
a.primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}

button.primary:hover,
a.primary:hover {
  filter: brightness(1.05);
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.error {
  color: var(--error);
  margin: 0;
  font-size: 13px;
}

.page-footer {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  margin-top: 12px;
}

.page-footer p {
  margin: 4px 0;
}