:root{
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --secondary: #0f766e;
  --danger: #dc2626;
  --border: #e2e8f0;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: #0f172a;
  color: #fff;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand { font-weight: 700; }
.user-meta { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.user-name { font-weight: 600; }
.muted { color: var(--muted); font-size: .9rem; }
.badge {
  background: #1e293b;
  color: #fff;
  padding: .2rem .5rem;
  border-radius: .4rem;
  font-size: .8rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding: .5rem 1rem 1rem;
}
.nav a {
  color: #cbd5e1;
  padding: .4rem .7rem;
  border-radius: .4rem;
  background: #1e293b;
  font-size: .9rem;
}
.nav a.active, .nav a:hover {
  background: #334155;
  color: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: .8rem;
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 2px rgba(15,23,42,.05);
}
.card h2, .card h3 { margin-top: 0; }
.card-title { color: var(--muted); font-size: .9rem; }
.card-value { font-size: 1.8rem; font-weight: 700; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: .6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
th { background: #f1f5f9; font-weight: 600; }

form label { display: block; font-weight: 600; margin-bottom: .3rem; }
input, select, textarea {
  width: 100%;
  padding: .5rem .6rem;
  border: 1px solid var(--border);
  border-radius: .5rem;
  font-size: .95rem;
  background: #fff;
}
textarea { min-height: 80px; }

.grid {
  display: grid;
  gap: .8rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.btn {
  display: inline-block;
  margin-top: 5px;
  padding: .5rem .9rem;
  border-radius: .5rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: .95rem;
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-secondary { background: var(--secondary); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-light { background: #e2e8f0; color: #0f172a; }
.btn-sm { padding: .35rem .6rem; font-size: .85rem; }
.btn-group { display: flex; gap: .5rem; flex-wrap: wrap; }
.inline { display: inline; }

.alert {
  padding: .7rem .9rem;
  border-radius: .5rem;
  margin-bottom: 1rem;
  font-weight: 600;
}
.alert.success { background: #dcfce7; color: #166534; }
.alert.error { background: #fee2e2; color: #991b1b; }
.alert.info { background: #e0f2fe; color: #075985; }

.login-wrap {
  max-width: 420px;
  margin: 3rem auto;
}

.align-end { display: flex; align-items: end; }

.mt-2 { margin-top: .5rem; }

/* Responsive */
@media (max-width: 768px) {
  .topbar-inner { flex-direction: column; align-items: flex-start; }
  .nav { padding: .5rem; }
}