:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-border: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #38bdf8;
  --ok: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
  --radius: 10px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
.app { min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--panel-border);
}
.topbar h1 { font-size: 18px; margin: 0; letter-spacing: 0.02em; }
.topbar .who { color: var(--text-dim); font-size: 14px; }
.btn {
  background: var(--panel); color: var(--text); border: 1px solid var(--panel-border);
  border-radius: 8px; padding: 8px 14px; font-size: 14px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }

.center-screen {
  flex: 1; display: flex; align-items: center; justify-content: center; padding: 24px;
}
.card {
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius);
  padding: 32px; max-width: 420px; width: 100%; text-align: center;
}
.card h1 { font-size: 22px; margin: 0 0 4px; }
.card .subtitle { color: var(--text-dim); margin: 0 0 24px; font-size: 14px; }
.card .status-msg { margin: 16px 0; font-size: 14px; line-height: 1.5; }
.status-msg.error { color: var(--danger); }
.status-msg.warn { color: var(--warn); }
.status-msg.info { color: var(--text-dim); }

form.bootstrap-form { text-align: left; display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
form.bootstrap-form label { font-size: 13px; color: var(--text-dim); }
form.bootstrap-form input {
  width: 100%; padding: 10px; border-radius: 8px; border: 1px solid var(--panel-border);
  background: #0b1220; color: var(--text); font-size: 14px; margin-top: 4px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; padding: 24px; }
.stat-card { background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius); padding: 18px; }
.stat-card h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-dim); margin: 0 0 10px; }
.stat-row { display: flex; justify-content: space-between; padding: 4px 0; font-size: 14px; }
.stat-row .label { color: var(--text-dim); }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill.up { background: rgba(74,222,128,0.15); color: var(--ok); }
.pill.down { background: rgba(248,113,113,0.15); color: var(--danger); }
.pill.warn { background: rgba(251,191,36,0.15); color: var(--warn); }

.footer-note { padding: 16px 24px; color: var(--text-dim); font-size: 12px; text-align: center; }