/**
 * Core administrativo — estilos mínimos
 */
:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --text: #e6edf3;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --border: #263246;
  --danger: #f85149;
  --ok: #3fb950;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}
.brand { padding: 1rem 1.25rem; font-weight: 600; border-bottom: 1px solid var(--border); }
.nav { flex: 1; padding: 0.75rem 0; overflow-y: auto; }
.nav-section {
  padding: 0.5rem 1.25rem 0.25rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.nav-item {
  display: block;
  padding: 0.45rem 1.25rem;
  color: var(--text);
}
.nav-item:hover { background: rgba(255,255,255,0.04); text-decoration: none; }
.sidebar-foot {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}
.muted { color: var(--muted); display: block; margin-bottom: 0.35rem; }
.main { flex: 1; padding: 1.5rem 2rem; max-width: 1100px; }
.page-title { margin-top: 0; font-size: 1.35rem; }
.flash {
  padding: 0.65rem 0.9rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}
.flash-success { border-color: var(--ok); background: rgba(63, 185, 80, 0.1); }
.flash-error { border-color: var(--danger); background: rgba(248, 81, 73, 0.1); }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
table.data th, table.data td {
  border-bottom: 1px solid var(--border);
  padding: 0.55rem 0.5rem;
  text-align: left;
}
table.data th { color: var(--muted); font-weight: 500; }
.actions { white-space: nowrap; }
.btn {
  display: inline-block;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-primary {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
}
.btn-danger { border-color: var(--danger); color: var(--danger); }
.form-row { margin-bottom: 0.85rem; }
.form-row label { display: block; margin-bottom: 0.25rem; color: var(--muted); font-size: 0.9rem; }
input[type="text"], input[type="email"], input[type="password"], select, textarea {
  width: 100%;
  max-width: 420px;
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0d1117;
  color: var(--text);
}
textarea { min-height: 100px; max-width: 640px; }
.login-wrap {
  max-width: 360px;
  margin: 4rem auto;
  padding: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.login-wrap h1 { margin-top: 0; font-size: 1.25rem; }
.login-error { color: var(--danger); margin-bottom: 0.75rem; }
.badge { font-size: 0.75rem; padding: 0.15rem 0.45rem; border-radius: 999px; border: 1px solid var(--border); }
.badge-on { border-color: var(--ok); color: var(--ok); }
.badge-off { border-color: var(--muted); color: var(--muted); }