:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --text: #e8eef4;
  --muted: #9aa7b5;
  --accent: #3d9cf0;
  --online: #2fbf71;
  --offline: #e25555;
  --danger: #d94a4a;
  --border: #2a3542;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1d2a3a 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .meta { font-family: var(--mono); font-size: 0.9em; color: var(--muted); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 20, 25, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { font-weight: 700; letter-spacing: 0.02em; color: var(--text); font-size: 1.1rem; }
.topbar nav { display: flex; gap: 1rem; align-items: center; }
.user { color: var(--muted); font-size: 0.9rem; }
.btn-link { color: var(--muted); }

.wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }
.page-head h1 { margin: 0 0 0.35rem; font-size: 1.6rem; }
.page-head p { margin: 0 0 1.25rem; color: var(--muted); }

.login-panel {
  max-width: 380px;
  margin: 4rem auto;
  padding: 1.75rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.login-panel h1 { margin: 0 0 0.25rem; }
.lede { color: var(--muted); margin: 0 0 1.25rem; }
.login-form { display: grid; gap: 0.85rem; }
.login-form label { display: grid; gap: 0.35rem; font-size: 0.9rem; color: var(--muted); }
.login-form input {
  padding: 0.65rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #10161d;
  color: var(--text);
}
.login-form button, .cmd-grid button {
  padding: 0.7rem 0.9rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #041018;
  font-weight: 600;
  cursor: pointer;
}
.login-form button:hover, .cmd-grid button:hover { filter: brightness(1.08); }
.error, .flash .error { color: #ff8d8d; }
.flash .ok { color: #7ddea8; }
.flash { list-style: none; padding: 0; margin: 0 0 1rem; }

.cluster-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.75rem; }
.cluster-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.cluster-link { display: block; padding: 1rem 1.1rem; color: var(--text); }
.cluster-link:hover { text-decoration: none; background: rgba(61, 156, 240, 0.06); border-radius: 8px; }
.cluster-title { display: flex; gap: 0.75rem; align-items: baseline; }
.cluster-desc { margin: 0.35rem 0 0.65rem; color: var(--muted); font-size: 0.95rem; }
.cluster-stats { display: flex; flex-wrap: wrap; gap: 0.55rem 0.85rem; align-items: center; }
.pill {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.pill.online { color: var(--online); border-color: rgba(47, 191, 113, 0.45); }
.pill.offline { color: var(--offline); border-color: rgba(226, 85, 85, 0.45); }
.crumb { margin: 0 0 0.35rem; color: var(--muted); font-size: 0.9rem; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  margin: 0 0 1rem;
}
.panel h2 { margin: 0 0 0.85rem; font-size: 1.1rem; }
.stack-form { display: grid; gap: 0.75rem; max-width: 420px; }
.stack-form label { display: grid; gap: 0.3rem; font-size: 0.9rem; color: var(--muted); }
.stack-form label.check { display: flex; gap: 0.5rem; align-items: center; }
.stack-form input[type="text"],
.stack-form input[type="password"],
.inline-form input[type="password"] {
  padding: 0.55rem 0.7rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #10161d;
  color: var(--text);
}
.stack-form button, .inline-form button {
  padding: 0.55rem 0.8rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #041018;
  font-weight: 600;
  cursor: pointer;
  width: fit-content;
}
.inline-form button.danger { background: var(--danger); color: #fff; }
.user-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.user-table th, .user-table td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.user-table .actions { display: grid; gap: 0.4rem; }
.inline-form { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }

.node-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.node-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.85rem 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.node-row a { color: var(--text); display: grid; }
.node-row .status { text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.04em; color: var(--muted); }
.dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--offline);
  box-shadow: 0 0 0 3px rgba(226, 85, 85, 0.2);
}
.node-row.online .dot, .dot.online {
  background: var(--online);
  box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.25);
}
.dot.inline { display: inline-block; margin-right: 0.4rem; vertical-align: middle; }
.empty { color: var(--muted); padding: 1rem 0; }

.map-frame {
  height: 520px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1015;
}

.kv { display: grid; grid-template-columns: 10rem 1fr; gap: 0.4rem 1rem; margin: 0 0 1.5rem; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

.commands h2, section h2 { margin-top: 1.5rem; }
.hint { color: var(--muted); font-size: 0.9rem; }
.cmd-grid { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.75rem 0; }
.cmd-grid button.danger { background: var(--danger); color: #fff; }
.cmd-result {
  background: #0b1015;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
}