:root {
  --navy: #0B3D91;
  --blue: #1B6FD6;
  --green: #1FA67A;
  --red: #D33A3A;
  --bg: #F4F6F9;
  --card: #FFFFFF;
  --border: #E2E6EC;
  --text: #1F2937;
  --text-light: #6B7280;
}

* { box-sizing: border-box; }

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

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

/* ---------- Top nav ---------- */
.topnav {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 10px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topnav .nav-links a {
  margin-left: 22px;
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
}
.topnav .nav-links a.active,
.topnav .nav-links a:hover { color: var(--blue); text-decoration: none; }
.topnav .user-chip {
  margin-left: 22px;
  font-size: 13px;
  color: var(--text-light);
}

.container { max-width: 1180px; margin: 0 auto; padding: 28px; }

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  margin-bottom: 22px;
  box-shadow: 0 1px 2px rgba(16,24,40,0.04);
}
.card h2, .card h3 { margin-top: 0; }

.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}

.stat-card { text-align: left; }
.stat-card .label { font-size: 13px; color: var(--text-light); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.stat-card .value { font-size: 28px; font-weight: 700; margin: 6px 0 4px; color: var(--navy); }
.stat-card .delta { font-size: 13px; font-weight: 600; }
.delta.up { color: var(--green); }
.delta.down { color: var(--red); }
.delta.flat { color: var(--text-light); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--text-light); font-weight: 700; }
tr:hover td { background: #FAFBFD; }
.amount { font-weight: 600; }
.nsf-row td { color: var(--red); }
.nsf-tag {
  display: inline-block;
  background: #FDEAEA;
  color: var(--red);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
  margin-left: 8px;
}

/* ---------- Forms / filters ---------- */
.filter-bar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 18px; }
select, input[type=text], input[type=password], input[type=email], input[type=number] {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
}
.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--navy); text-decoration: none; }
.btn.btn-secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn.btn-danger { background: var(--red); }
.btn.btn-sm { padding: 6px 12px; font-size: 13px; }

/* ---------- Login page ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0B3D91 0%, #1B6FD6 100%);
}
.login-box {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  width: 360px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
  text-align: center;
}
.login-box .logo-wrap { margin-bottom: 18px; }
.login-box input { width: 100%; margin-bottom: 14px; }
.login-box .btn { width: 100%; }
.error-msg { background: #FDEAEA; color: var(--red); padding: 10px 14px; border-radius: 6px; font-size: 13px; margin-bottom: 14px; }
.success-msg { background: #E8F8F1; color: var(--green); padding: 10px 14px; border-radius: 6px; font-size: 13px; margin-bottom: 14px; }

/* ---------- Badges / status ---------- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.badge.active { background: #E8F8F1; color: var(--green); }
.badge.locked { background: #FDEAEA; color: var(--red); }
.badge.admin { background: #EAF1FD; color: var(--blue); }

footer { text-align: center; padding: 24px; color: var(--text-light); font-size: 12px; }