:root {
  --bg: #0c0c0e;
  --bg-elevated: #1c1c1f;
  --surface: #161618;
  --surface-hover: #1c1c1f;
  --border: #38383a;
  --border-muted: #2c2c2e;
  --text: #ffffff;
  --text-secondary: #c7c7cc;
  --text-muted: #a1a1a6;
  --text-disabled: #68686f;
  --primary: #007aff;
  --primary-hover: #0056b3;
  --primary-active: #004085;
  --success: #30d158;
  --warning: #ff9f0a;
  --danger: #ff453a;
  --mono: "Berkeley Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular,
    Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-muted);
}
.brand { font-weight: 600; font-size: 15px; color: var(--text); }
.brand span { color: var(--primary); }
.topnav { display: flex; gap: 20px; align-items: center; }
.topnav a { color: var(--text-muted); font-size: 13px; }
.topnav a:hover { color: var(--text); text-decoration: none; }

.container { max-width: 940px; margin: 0 auto; padding: 48px 24px 96px; }
.container.narrow { max-width: 440px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  margin-bottom: 20px;
}
.card h2 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.card .sub { color: var(--text-muted); font-size: 13px; margin-bottom: 24px; }

label {
  display: block;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.field { margin-bottom: 18px; }

input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  padding: 10px 12px;
  outline: none;
}
input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,122,255,0.18); }
input::placeholder { color: var(--text-disabled); }

button {
  width: 100%;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 7px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  padding: 11px 16px;
  cursor: pointer;
}
button:hover { background: var(--primary-hover); }
button:active { background: var(--primary-active); }
button:disabled { background: var(--border); color: var(--text-disabled); cursor: not-allowed; }

.alert {
  border-radius: 7px;
  padding: 11px 14px;
  font-size: 13px;
  margin-bottom: 18px;
  display: none;
}
.alert.show { display: block; }
.alert.error { background: rgba(255,69,58,0.12); border: 1px solid var(--danger); color: #ff8a80; }
.alert.ok { background: rgba(48,209,88,0.12); border: 1px solid var(--success); color: #6ee88a; }
.alert.info { background: rgba(0,122,255,0.12); border: 1px solid var(--primary); color: #7ab8ff; }

.footer-link { text-align: center; font-size: 13px; color: var(--text-muted); margin-top: 20px; }

.status-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.stat { background: var(--bg-elevated); border: 1px solid var(--border-muted); border-radius: 8px; padding: 16px; }
.stat .k { font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 6px; }
.stat .v { font-size: 14px; color: var(--text); word-break: break-all; }

.badge {
  display: inline-block;
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}
.badge.ok { background: rgba(48,209,88,0.15); color: var(--success); }
.badge.warn { background: rgba(255,159,10,0.15); color: var(--warning); }
.badge.err { background: rgba(255,69,58,0.15); color: var(--danger); }
.badge.idle { background: var(--border-muted); color: var(--text-muted); }

.divider { border: 0; border-top: 1px solid var(--border-muted); margin: 26px 0; }
.mono-dim { color: var(--text-muted); font-size: 12px; }
.hidden { display: none !important; }

@media (max-width: 640px) {
  .status-grid { grid-template-columns: 1fr; }
  .container { padding: 32px 16px 64px; }
}