:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-light: #eff6ff;
  --green: #16a34a;
  --green-light: #f0fdf4;
  --orange: #ea580c;
  --orange-light: #fff7ed;
  --red: #dc2626;
  --red-light: #fef2f2;
  --yellow: #ca8a04;
  --yellow-light: #fefce8;
  --purple: #7c3aed;
  --purple-light: #f5f3ff;
  --bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --sidebar: #1e293b;
  --sidebar-hover: #334155;
  --sidebar-active: #2563eb;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

/* Layout */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--sidebar);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
}

.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid #334155;
}

.sidebar-brand .brand-name {
  font-size: 18px;
  font-weight: 700;
  color: #f1f5f9;
  letter-spacing: -0.3px;
}

.sidebar-brand .brand-sub {
  font-size: 11px;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
}

.nav-section {
  padding: 6px 12px 4px;
  font-size: 10px;
  font-weight: 600;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  color: #94a3b8;
  text-decoration: none;
  transition: all 0.15s;
  font-size: 13.5px;
}

.nav-link:hover {
  background: var(--sidebar-hover);
  color: #f1f5f9;
}

.nav-link.active {
  background: var(--sidebar-active);
  color: #fff;
  font-weight: 500;
}

.nav-link .nav-icon {
  width: 18px;
  text-align: center;
  opacity: 0.8;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid #334155;
  font-size: 12px;
  color: #64748b;
}

.sidebar-footer .user-name {
  font-weight: 600;
  color: #94a3b8;
  display: block;
  margin-bottom: 8px;
}

.sidebar-footer a {
  color: #64748b;
  text-decoration: none;
  font-size: 12px;
}

.sidebar-footer a:hover {
  color: #94a3b8;
}

/* Main Content */
.main-content {
  margin-left: 240px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-header h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.4px;
}

.page-header .breadcrumb {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.page-header .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
}

.page-body {
  padding: 28px 32px;
  flex: 1;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.card-body {
  padding: 20px;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.stat-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.stat-card.blue .stat-value { color: var(--blue); }
.stat-card.green .stat-value { color: var(--green); }
.stat-card.orange .stat-value { color: var(--orange); }
.stat-card.red .stat-value { color: var(--red); }

/* Tables */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 13.5px;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: #f8fafc;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.badge-green { background: var(--green-light); color: var(--green); }
.badge-blue { background: var(--blue-light); color: var(--blue); }
.badge-orange { background: var(--orange-light); color: var(--orange); }
.badge-red { background: var(--red-light); color: var(--red); }
.badge-yellow { background: var(--yellow-light); color: var(--yellow); }
.badge-purple { background: var(--purple-light); color: var(--purple); }
.badge-gray { background: #f1f5f9; color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s;
  line-height: 1.4;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-dark); color: #fff; }

.btn-success {
  background: var(--green);
  color: #fff;
}
.btn-success:hover { background: #15803d; color: #fff; }

.btn-danger {
  background: var(--red);
  color: #fff;
}
.btn-danger:hover { background: #b91c1c; color: #fff; }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: #f8fafc; }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: #f1f5f9; color: var(--text); }

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
}

.btn-xs {
  padding: 3px 8px;
  font-size: 11px;
  border-radius: 6px;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.15s;
  outline: none;
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

select.form-control {
  cursor: pointer;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

/* Alerts/Messages */
.messages {
  list-style: none;
  margin-bottom: 20px;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 8px;
  font-size: 13.5px;
}

.alert-success { background: var(--green-light); color: var(--green); border: 1px solid #bbf7d0; }
.alert-error { background: var(--red-light); color: var(--red); border: 1px solid #fecaca; }
.alert-warning { background: var(--yellow-light); color: var(--yellow); border: 1px solid #fde68a; }
.alert-info { background: var(--blue-light); color: var(--blue); border: 1px solid #bfdbfe; }

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
  gap: 0;
  overflow-x: auto;
}

.tab-link {
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: all 0.15s;
}

.tab-link:hover { color: var(--text); }

.tab-link.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
  font-weight: 600;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show {
  display: flex;
}

.modal {
  background: var(--surface);
  border-radius: 12px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  margin: 20px;
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 20px;
  padding: 0 4px;
  line-height: 1;
}

.modal-close:hover { color: var(--text); }

.modal-body {
  padding: 20px 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* Product catalog */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.15s;
}

.product-card:hover {
  box-shadow: var(--shadow-md);
}

.product-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.product-desc {
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.product-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 12px;
}

.product-price .price-sub {
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
}

/* Employee card */
.employee-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: background 0.1s;
}

.employee-card:hover { background: #f8fafc; }
.employee-card:last-child { border-bottom: none; }

.employee-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.employee-info .employee-name {
  font-weight: 600;
  font-size: 14px;
}

.employee-info .employee-sub {
  font-size: 12px;
  color: var(--muted);
}

/* Sections */
.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* Login page */
.login-page {
  min-height: 100vh;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 420px;
}

.login-brand {
  text-align: center;
  margin-bottom: 32px;
}

.login-brand h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -1px;
}

.login-brand h1 span {
  color: var(--blue);
}

.login-brand p {
  color: var(--muted);
  margin-top: 4px;
  font-size: 14px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.login-portals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 24px;
}

.portal-btn {
  padding: 12px;
  border-radius: 8px;
  border: 2px solid var(--border);
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--surface);
}

.portal-btn.active-portal {
  border-color: var(--blue);
  background: var(--blue-light);
}

.portal-btn .portal-icon {
  font-size: 20px;
  margin-bottom: 4px;
}

.portal-btn .portal-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
}

.portal-btn.active-portal .portal-label {
  color: var(--blue);
}

/* Checkbox group */
.checkbox-list {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.1s;
}

.checkbox-item:hover { background: #f8fafc; }

.checkbox-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--blue);
}

.checkbox-item label {
  cursor: pointer;
  font-size: 13px;
  flex: 1;
}

/* Urgency colors */
.urgency-high { color: var(--red); font-weight: 600; }
.urgency-medium { color: var(--yellow); font-weight: 600; }
.urgency-low { color: var(--green); font-weight: 600; }

/* Info grid for employee detail */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.info-item .info-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 3px;
}

.info-item .info-value {
  font-size: 14px;
  color: var(--text);
}

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

.empty-state .empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 200px;
  }
  .main-content {
    margin-left: 200px;
  }
  .page-body {
    padding: 20px 16px;
  }
  .form-row, .form-row-3 {
    grid-template-columns: 1fr;
  }
}

/* Utility */
.text-muted { color: var(--muted); }
.text-sm { font-size: 12px; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }
.flex-wrap { flex-wrap: wrap; }
.ms-auto { margin-left: auto; }
.w-100 { width: 100%; }