:root {
  --primary: #1e40af;
  --primary-hover: #1d4ed8;
  --primary-light: #dbeafe;
  --success: #15803d;
  --success-light: #dcfce7;
  --warning: #b45309;
  --warning-light: #fef3c7;
  --danger: #b91c1c;
  --danger-light: #fee2e2;
  --dark: #0f172a;
  --gray-900: #0f172a;
  --gray-800: #1e293b;
  --gray-700: #334155;
  --gray-600: #475569;
  --gray-500: #64748b;
  --gray-400: #94a3b8;
  --gray-300: #cbd5e1;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --gray-50: #f8fafc;
  --white: #ffffff;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.5;
  min-height: 100vh;
}

.app-container { display: flex; min-height: 100vh; }
.sidebar {
  width: 250px;
  background-color: #0b1329;
  color: var(--white);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.sidebar-header { padding: 22px 18px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.sidebar-brand {
  display: flex; align-items: center; gap: 10px; font-size: 1.1rem; font-weight: 700; color: var(--white); text-decoration: none;
}
.sidebar-brand-badge {
  background: #2563eb; color: white; font-size: 0.68rem; padding: 2px 6px; border-radius: 999px; text-transform: uppercase; font-weight: 800;
}
.sidebar-nav { padding: 14px 10px; flex: 1; display: flex; flex-direction: column; gap: 4px; }

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}
.stat-card {
  background-color: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.stat-card-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 6px;
}
.stat-card-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--gray-900);
}

/* Card */
.card {
  background-color: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.card-title { font-size: 1rem; font-weight: 700; color: var(--gray-900); }
.card-body { padding: 20px; }

/* Table */
.table-responsive { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.data-table th {
  background-color: var(--gray-50);
  color: var(--gray-600);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--gray-200);
  text-align: left;
}
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-700);
  vertical-align: middle;
}
.data-table tr:hover td { background-color: #f8fafc; }

/* Badges */
.badge { display: inline-block; padding: 3px 8px; border-radius: 999px; font-size: 0.72rem; font-weight: 600; }
.badge-success { background-color: var(--success-light); color: var(--success); }
.badge-warning { background-color: var(--warning-light); color: var(--warning); }
.badge-danger  { background-color: var(--danger-light); color: var(--danger); }
.badge-primary { background-color: var(--primary-light); color: var(--primary); }
.badge-gray    { background-color: var(--gray-200); color: var(--gray-700); }

/* Buttons & Form */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius-md); font-size: 0.85rem; font-weight: 600; text-decoration: none; cursor: pointer; border: 1px solid transparent;
}
.btn-sm { padding: 4px 8px; font-size: 0.78rem; }
.btn-primary { background-color: var(--primary); color: var(--white); }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-outline { background-color: var(--white); border-color: var(--gray-300); color: var(--gray-700); }
.btn-danger { background-color: var(--danger); color: var(--white); }

.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 4px; }
.form-control {
  width: 100%; padding: 8px 12px; border-radius: var(--radius-md); border: 1px solid var(--gray-300); font-size: 0.9rem;
}
.form-control:focus { outline: none; border-color: var(--primary); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }

.alert { padding: 10px 14px; border-radius: var(--radius-md); font-size: 0.88rem; margin-bottom: 18px; }
.alert-success { background-color: var(--success-light); color: var(--success); }
.alert-danger { background-color: var(--danger-light); color: var(--danger); }

/* Login */
.login-body {
  display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #0b1329; padding: 20px;
}
.login-card {
  width: 100%; max-width: 400px; background-color: var(--white); border-radius: 16px; padding: 30px; box-shadow: var(--shadow-lg);
}
.login-title { font-size: 1.4rem; font-weight: 800; color: var(--gray-900); text-align: center; margin-bottom: 4px; }
.login-subtitle { font-size: 0.85rem; color: var(--gray-500); text-align: center; margin-bottom: 20px; }

.pagination { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 18px; }
.page-item {
  display: inline-flex; padding: 5px 10px; border: 1px solid var(--gray-300); border-radius: var(--radius-sm); background-color: var(--white); color: var(--gray-700); text-decoration: none; font-size: 0.82rem;
}
.page-item.active { background-color: var(--primary); border-color: var(--primary); color: var(--white); font-weight: 600; }

.nav-link {
  display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; color: var(--gray-300); text-decoration: none; border-radius: var(--radius-md); font-size: 0.9rem; font-weight: 500; transition: all 0.15s ease;
}
.nav-link:hover { background-color: rgba(255, 255, 255, 0.07); color: var(--white); }
.nav-link.active { background-color: #2563eb; color: var(--white); font-weight: 600; }
.nav-badge { background-color: #ef4444; color: white; font-size: 0.7rem; padding: 2px 6px; border-radius: 999px; font-weight: 700; }
.sidebar-footer { padding: 16px; border-top: 1px solid rgba(255, 255, 255, 0.08); font-size: 0.85rem; color: var(--gray-400); }

.main-wrapper { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.top-bar {
  background-color: var(--white); border-bottom: 1px solid var(--gray-200); padding: 14px 24px; display: flex; align-items: center; justify-content: space-between;
}
.top-bar-title { font-size: 1.2rem; font-weight: 700; color: var(--gray-900); }
.content-body { padding: 24px; flex: 1; }