:root {
  --bg: #0f1216;
  --panel: #171c23;
  --border: #262d38;
  --text: #e6e9ef;
  --muted: #8b95a5;
  --accent: #4f9dff;
  --accent-hover: #3b86e6;
  --danger: #ff5c5c;
  --ok: #37c871;
}
* { 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;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--panel);
}
header.topbar .brand { font-weight: 600; }
header.topbar nav a { margin-left: 18px; color: var(--muted); }
header.topbar nav a:hover { color: var(--text); }
.wrap { max-width: 960px; margin: 0 auto; padding: 24px 16px; }
.center { max-width: 420px; margin: 8vh auto; padding: 0 16px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 24px; margin-bottom: 20px;
}
h1 { font-size: 22px; margin: 0 0 18px; }
h2 { font-size: 17px; margin: 0 0 14px; }
label { display: block; margin: 12px 0 4px; color: var(--muted); font-size: 13px; }
input[type=text], input[type=password] {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: #0c0f13; color: var(--text); font-size: 14px;
}
button, .btn {
  display: inline-block; cursor: pointer; border: 0; border-radius: 8px;
  padding: 10px 16px; font-size: 14px; font-weight: 500;
  background: var(--accent); color: #fff;
}
button:hover, .btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn.icon { width: 30px; height: 30px; padding: 0; display: inline-flex;
  align-items: center; justify-content: center; font-size: 14px; line-height: 1; text-decoration: none; }
.err { background: #3a1d1d; border: 1px solid #6b2b2b; color: #ffb3b3; padding: 10px 12px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-weight: 500; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; }
.dot.on { background: var(--ok); }
.dot.off { background: #555d6a; }
.muted { color: var(--muted); }
code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: #0c0f13; border: 1px solid var(--border); border-radius: 8px;
}
code { padding: 2px 6px; font-size: 13px; }
pre { padding: 12px; overflow-x: auto; font-size: 13px; white-space: pre-wrap; word-break: break-all; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
#terminal { width: 100%; height: calc(100vh - 150px); }
@media (max-width: 600px) {
  header.topbar { padding: 12px 16px; }
  header.topbar nav a { margin-left: 12px; }
}