:root {
  --primary: #1F4E78;
  --primary-dark: #163a58;
  --bg: #f4f6f8;
  --card-bg: #ffffff;
  --border: #dbe1e8;
  --text: #1e293b;
  --text-muted: #64748b;
  --danger: #b33a3a;
  --success: #2e8b57;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: var(--primary);
  color: #fff;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar .brand { font-weight: 700; font-size: 18px; }
.topbar .user-info { font-size: 14px; display: flex; align-items: center; gap: 14px; }
.topbar a { color: #fff; text-decoration: none; opacity: 0.9; }
.topbar a:hover { opacity: 1; text-decoration: underline; }

.layout { display: flex; min-height: calc(100vh - 54px); }

.sidebar {
  width: 220px;
  background: #fff;
  border-right: 1px solid var(--border);
  padding: 18px 0;
}
.sidebar a {
  display: block;
  padding: 10px 22px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}
.sidebar a:hover, .sidebar a.active { background: #eef3f8; color: var(--primary); border-right: 3px solid var(--primary); }

.content { flex: 1; padding: 24px; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 18px;
}

.card h2 { margin-top: 0; font-size: 16px; color: var(--primary); }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.login-box {
  background: #fff;
  padding: 36px;
  border-radius: 10px;
  width: 360px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.login-box h1 { font-size: 18px; text-align: center; margin-bottom: 4px; color: var(--primary); }
.login-box p.sub { text-align: center; color: var(--text-muted); font-size: 13px; margin-top: 0; margin-bottom: 24px; }

label { display: block; font-size: 13px; margin-bottom: 4px; color: var(--text-muted); }
input[type=text], input[type=email], input[type=password], select {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 14px;
}

button, .btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:hover, .btn:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); }
.btn-success { background: var(--success); }

.alert {
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
}
.alert-error { background: #fdecec; color: var(--danger); border: 1px solid #f3c6c6; }
.alert-success { background: #e9f7ef; color: var(--success); border: 1px solid #c3e9d1; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; }
th { background: #eef3f8; color: var(--primary); }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  background: #eef3f8;
  color: var(--primary);
}