* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0f1729;
  color: #e2e8f0;
}
a { color: inherit; text-decoration: none; }
.centered {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  background: #1e2d4a;
  border: 1px solid #2f3f5f;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}
.login-card { width: 100%; max-width: 420px; text-align: center; }
.title { margin: 0 0 8px; font-size: 30px; color: #fff; }
.subtitle { margin: 0 0 20px; color: #94a3b8; }
.btn {
  background: #0d9488;
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 11px 14px;
  font-weight: 700;
  cursor: pointer;
}
.btn:hover { opacity: 0.95; }
.btn-secondary { background: #334155; }
.btn-danger { background: #dc2626; }
.badge {
  display: inline-block;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
}
.badge.active { background: #16a34a; color: #ecfdf5; }
.badge.suspended { background: #dc2626; color: #fef2f2; }
.badge.pending { background: #ca8a04; color: #fefce8; }
.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}
.sidebar {
  background: #1a2744;
  border-right: 1px solid #2f3f5f;
  padding: 18px;
}
.sidebar h2 { margin: 0 0 16px; font-size: 20px; color: #fff; }
.sidebar a {
  display: block;
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
  color: #cbd5e1;
}
.sidebar a.active,
.sidebar a:hover { background: #0d9488; color: #fff; }
.main { display: flex; flex-direction: column; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid #2f3f5f;
  background: #13203a;
}
.content { padding: 18px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
input, select, textarea {
  width: 100%;
  background: #0f1729;
  color: #e2e8f0;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 10px;
}
table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid #334155;
}
th, td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid #334155;
  font-size: 14px;
}
thead { background: #13203a; }
tbody tr:nth-child(even) { background: #14233f; }
tbody tr:hover { background: #1f365f; }
.hidden { display: none !important; }
.muted { color: #94a3b8; font-size: 13px; }
.error { color: #fecaca; background: #7f1d1d; padding: 10px; border-radius: 8px; }
.success { color: #bbf7d0; background: #14532d; padding: 10px; border-radius: 8px; }
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 14px;
}
.panel {
  background: #1e2d4a;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 14px;
}
@media (max-width: 940px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid #2f3f5f; }
  .grid-2 { grid-template-columns: 1fr; }
}

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 16px; }
.stat { font-size: 2rem; font-weight: 600; color: var(--teal, #0d9488); margin-top: 8px; }