:root {
  --navy: #0B1E3D;
  --navy-light: #12294F;
  --cyan: #12B5C9;
  --gray-bg: #F2F4F7;
  --gray-mid: #6B7280;
  --gray-border: #D1D5DB;
  --green: #16A34A;
  --red: #DC2626;
  --amber: #D97706;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--gray-bg);
  color: #111827;
}

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--navy) 0%, #14315E 100%);
}
.login-card {
  background: #fff;
  border-radius: 12px;
  padding: 36px 32px;
  width: 340px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}
.login-card h1 {
  color: var(--navy);
  font-size: 22px;
  margin: 0 0 4px;
}
.login-card p.sub {
  color: var(--gray-mid);
  font-size: 13px;
  margin: 0 0 20px;
}
.login-card input {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 12px;
  border: 1px solid var(--gray-border);
  border-radius: 8px;
  font-size: 14px;
}
.login-card button {
  width: 100%;
  padding: 11px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.login-card button:hover { background: var(--navy-light); }
.error-msg {
  background: #FEF2F2;
  color: var(--red);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 12px;
}

/* ---------- Layout ---------- */
.topbar {
  background: var(--navy);
  color: #fff;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar .brand { font-weight: 700; font-size: 18px; letter-spacing: 0.5px; }
.topbar .brand span { color: var(--cyan); }
.topbar nav a {
  color: #CBD5E1;
  text-decoration: none;
  margin-left: 20px;
  font-size: 14px;
}
.topbar nav a.active, .topbar nav a:hover { color: #fff; border-bottom: 2px solid var(--cyan); padding-bottom: 4px; }
.topbar .user-info { font-size: 13px; color: #94A3B8; }
.topbar .user-info a { color: var(--cyan); text-decoration: none; margin-left: 10px; }

.container { max-width: 1200px; margin: 0 auto; padding: 24px 28px; }

/* ---------- KPI cards ---------- */
.kpi-row { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.kpi-card {
  background: var(--navy);
  color: #fff;
  border-radius: 10px;
  padding: 16px 20px;
  flex: 1;
  min-width: 150px;
  border-bottom: 3px solid var(--cyan);
}
.kpi-card .label { font-size: 12px; color: #9FB3D1; }
.kpi-card .value { font-size: 22px; font-weight: 700; margin-top: 4px; }

/* ---------- Table ---------- */
.card { background: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); margin-bottom: 20px; }
.card h2 { margin-top: 0; font-size: 16px; color: var(--navy); }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
  background: var(--navy);
  color: #fff;
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  font-size: 12.5px;
}
td { padding: 10px 12px; border-bottom: 1px solid #EEF1F5; }
tr:hover td { background: #FAFBFC; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 600;
}
.badge-DRAFT { background: #E5E7EB; color: #374151; }
.badge-SENT { background: #DBEAFE; color: #1D4ED8; }
.badge-PAID { background: #DCFCE7; color: var(--green); }
.badge-OVERDUE { background: #FEE2E2; color: var(--red); }
.badge-CANCELLED { background: #F3F4F6; color: #9CA3AF; }

.filters { margin-bottom: 16px; display: flex; gap: 8px; }
.filters a {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  text-decoration: none;
  color: var(--navy);
  background: #EEF1F5;
}
.filters a.active { background: var(--navy); color: #fff; }

.btn {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12.5px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-weight: 600;
}
.btn-primary { background: var(--cyan); color: #fff; }
.btn-outline { background: #fff; border: 1px solid var(--gray-border); color: var(--navy); }
.btn-success { background: var(--green); color: #fff; }

.text-right { text-align: right; }
.muted { color: var(--gray-mid); font-size: 12.5px; }