:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --border: #334155;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --green: #22c55e;
  --amber: #f59e0b;
  --red: #ef4444;
  --blue: #3b82f6;
  --purple: #a855f7;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: linear-gradient(160deg, #0f172a 0%, #1a2744 100%);
  color: var(--text);
  min-height: 100vh;
}
.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 0.85rem; }
.section-title { margin: 2rem 0 0.75rem; font-size: 1rem; color: var(--muted); }

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.25rem 1.5rem 0;
  gap: 1rem;
}
.top h1 { margin: 0; font-size: 1.4rem; }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  width: min(360px, 100%);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.login-card h1 { margin: 0; }
.login-card label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.8rem; color: var(--muted); }
.login-card input {
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0f172a;
  color: var(--text);
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 0.6rem 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}
.btn.primary { background: var(--green); color: #052e16; }
.btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn.link { background: rgba(59,130,246,0.15); color: #93c5fd; font-size: 0.8rem; padding: 0.4rem 0.65rem; }

.alerts { padding: 0 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
.alert {
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
}
.alert.error { background: rgba(239,68,68,0.12); border-color: rgba(239,68,68,0.4); }
.alert.warn { background: rgba(245,158,11,0.12); border-color: rgba(245,158,11,0.4); }
.alert.info { background: rgba(59,130,246,0.12); border-color: rgba(59,130,246,0.35); }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.65rem;
  padding: 1rem 1.5rem 0;
}
.metric {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem;
}
.metric .val { font-size: 1.35rem; font-weight: 700; }
.metric .lbl { font-size: 0.72rem; color: var(--muted); margin-top: 0.2rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.75rem;
  padding: 0 1.5rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.card h3 { margin: 0; font-size: 1rem; }
.card .desc { font-size: 0.8rem; color: var(--muted); min-height: 2.4em; }
.card .actions { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: auto; }

.channels {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.65rem;
  padding: 0 1.5rem;
}
.ch {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem;
  font-size: 0.85rem;
}
.ch .badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: #334155;
  margin-left: 0.35rem;
}
.status-ok { color: var(--green); }
.status-bad { color: var(--red); }
.status-unk { color: var(--amber); }

.health {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.65rem;
  padding: 0 1.5rem 2rem;
}
.health-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  font-size: 0.82rem;
}

.err { color: var(--red); font-size: 0.85rem; }