:root {
  --navy: #1b2a56;
  --navy-dark: #142046;
  --gold: #e8a13c;
  --orange: #f5821f;
  --blue: #2196d8;
  --blue-dark: #17406b;
  --pink: #d81b6a;
  --pink-dark: #b6104f;
  --teal: #1fb6a6;
  --purple: #7b5ce0;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #2b2f42;
  --muted: #8991a8;
  --border: #e7eaf3;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(27, 42, 86, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Inter", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

a { text-decoration: none; color: inherit; }

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--navy);
  color: #cfd6ea;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar .brand .mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--gold), var(--orange));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--navy-dark);
  font-size: 18px;
}

.sidebar .brand .brand-text {
  line-height: 1.15;
}
.sidebar .brand .brand-text .name {
  font-weight: 700;
  color: #fff;
  font-size: 15px;
}
.sidebar .brand .brand-text .sub {
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--gold);
}

.sidebar nav {
  padding: 14px 10px;
  flex: 1;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  color: #b9c0d9;
  font-size: 13.5px;
  margin-bottom: 2px;
  transition: background 0.15s, color 0.15s;
}

.sidebar nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }

.sidebar nav a.active {
  background: linear-gradient(90deg, var(--blue), var(--navy));
  color: #fff;
  font-weight: 600;
}

.sidebar nav a .icon { font-size: 15px; width: 18px; text-align: center; }

/* Topbar */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar .welcome { font-size: 15px; color: var(--muted); }
.topbar .welcome strong { color: var(--text); }

.topbar .icons { display: flex; gap: 18px; align-items: center; color: var(--muted); }
.topbar .icons a { font-size: 16px; }
.topbar .icons a:hover { color: var(--navy); }

.content { padding: 24px 28px; }

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  border-radius: var(--radius);
  padding: 18px 16px;
  color: #fff;
  box-shadow: var(--shadow);
}
.kpi-card .value { font-size: 22px; font-weight: 700; }
.kpi-card .label { font-size: 12px; opacity: 0.85; margin-top: 6px; }

.kpi-card.c1 { background: linear-gradient(135deg, var(--blue), #40b3e8); }
.kpi-card.c2 { background: linear-gradient(135deg, var(--navy), var(--navy-dark)); }
.kpi-card.c3 { background: linear-gradient(135deg, #2196d8, #1177b3); }
.kpi-card.c4 { background: linear-gradient(135deg, var(--navy), #26386e); }
.kpi-card.c5 { background: linear-gradient(135deg, var(--pink), var(--pink-dark)); }

/* Panels */
.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 980px) { .panel-grid { grid-template-columns: 1fr; } }

.panel {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  background: var(--blue);
  color: #fff;
  padding: 12px 18px;
  font-weight: 600;
  font-size: 13.5px;
}
.panel.dark .panel-header { background: var(--navy); }

.panel-body { padding: 18px; }

.stat-row {
  display: flex;
  gap: 14px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.stat-box {
  flex: 1;
  min-width: 90px;
  background: #f7f8fc;
  border-radius: 8px;
  padding: 10px 12px;
}
.stat-box .k { font-size: 11px; color: var(--muted); }
.stat-box .v { font-size: 15px; font-weight: 700; margin-top: 2px; }
.stat-box.pending .v { color: var(--pink); }
.stat-box.paid .v { color: var(--blue); }

/* Tables & cards */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 16px 0;
  color: var(--navy);
}

table.data-table { width: 100%; border-collapse: collapse; }
table.data-table th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
  border-bottom: 2px solid var(--border);
  padding: 10px 12px;
}
table.data-table td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}
table.data-table tr:hover td { background: #f8faff; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge.green { background: #e3f9ee; color: #1a9c5f; }
.badge.yellow { background: #fff5e0; color: #b8860b; }
.badge.red { background: #fde7ee; color: var(--pink-dark); }
.badge.blue { background: #e3f2fb; color: var(--blue-dark); }
.badge.gray { background: #eef0f5; color: var(--muted); }

.btn {
  display: inline-block;
  padding: 9px 18px;
  border-radius: 7px;
  border: none;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}
.btn:hover { background: var(--blue-dark); }
.btn.gold { background: var(--gold); color: var(--navy-dark); }
.btn.gold:hover { background: var(--orange); }
.btn.outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: var(--pink); }
.btn.danger:hover { background: var(--pink-dark); }
.btn.small { padding: 5px 12px; font-size: 12px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 9px 12px;
  border-radius: 7px;
  border: 1px solid var(--border);
  font-size: 13.5px;
  font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--blue);
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-header h1 { font-size: 20px; margin: 0; color: var(--navy); }

.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 60%, #0e1733 100%);
}
.auth-card {
  background: #fff;
  width: 380px;
  border-radius: 14px;
  padding: 34px 32px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.auth-card .brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
.auth-card h1 { font-size: 18px; margin: 0 0 4px 0; color: var(--navy); }
.auth-card p.sub { color: var(--muted); font-size: 12.5px; margin: 0 0 20px 0; }
.auth-card .btn { width: 100%; padding: 11px; font-size: 14px; margin-top: 6px; }
.auth-card .error {
  background: #fde7ee; color: var(--pink-dark); padding: 10px 12px;
  border-radius: 7px; font-size: 12.5px; margin-bottom: 14px;
}
.auth-card .footer-link { text-align: center; margin-top: 16px; font-size: 12.5px; color: var(--muted); }
.auth-card .footer-link a { color: var(--blue); font-weight: 600; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--muted); }