:root {
  --bg: #0e1116;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --accent-hover: #1f6feb;
  --danger: #f85149;
  --success: #3fb950;
  --warn: #d29922;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

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

.muted { color: var(--muted); font-size: 13px; }
.err { color: var(--danger); margin: 8px 0 0; min-height: 18px; }
.ok { color: var(--success); }

button, .btn {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  font-size: 14px;
}
button:hover, .btn:hover { background: var(--accent-hover); }
button.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
button.secondary:hover { background: var(--panel); }

input, select, textarea {
  width: 100%;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

label {
  display: block;
  margin: 12px 0;
  color: var(--muted);
  font-size: 13px;
}
label input, label select, label textarea { margin-top: 4px; }

/* ── login ── */
.auth-bg { display: grid; place-items: center; min-height: 100vh; }
.auth-box {
  width: 320px;
  padding: 28px 26px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.auth-box h1 { margin: 0; font-size: 22px; }
.auth-box button { width: 100%; margin-top: 14px; padding: 10px; }

/* ── header ── */
.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.topbar h1 { margin: 0; font-size: 17px; }
.topbar nav { display: flex; gap: 14px; }
.topbar nav a {
  color: var(--muted);
  font-size: 14px;
  padding: 4px 8px;
  border-radius: 4px;
}
.topbar nav a.active { color: var(--text); background: rgba(255,255,255,0.04); }
.topbar .right { margin-left: auto; display: flex; align-items: center; gap: 12px; }

/* ── content ── */
main.content { padding: 24px 20px; max-width: 1200px; margin: 0 auto; }
h2 { margin: 0 0 16px; font-size: 18px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  margin-bottom: 18px;
}

/* ── tabs ── */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tabs button {
  background: transparent;
  color: var(--muted);
  border: 0;
  padding: 9px 14px;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  font-weight: 500;
}
.tabs button.active {
  color: var(--text);
  border-color: var(--accent);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── grid for settings rows ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .grid-2 { grid-template-columns: 1fr; } }

/* ── tables ── */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
tr:hover td { background: rgba(255,255,255,0.02); }

/* ── badges ── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
}
.badge.ok { background: rgba(63,185,80,0.15); color: var(--success); }
.badge.warn { background: rgba(210,153,34,0.15); color: var(--warn); }
.badge.bad { background: rgba(248,81,73,0.15); color: var(--danger); }