:root {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-muted: #f1f5f9;
  --border-color: #e2e8f0;
  --border-focus: #3b82f6;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --success: #059669;
  --success-light: #ecfdf5;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-light: #fef2f2;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 13px;
  min-height: 100vh;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

.sidebar {
  width: 230px;
  background-color: #ffffff;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: sticky;
  top: 0;
  height: 100vh;
  flex-shrink: 0;
  z-index: 40;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.brand-info h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.sidebar-nav {
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 13px;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.nav-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-item:hover {
  background-color: var(--bg-muted);
  color: var(--text-main);
}

.nav-item.active {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.sidebar-footer {
  padding: 14px;
  border-top: 1px solid var(--border-color);
  background-color: #fafbfc;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.user-card {
  background-color: #ffffff;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-card-info {
  overflow: hidden;
}

.user-card-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
}

.user-card-role {
  font-size: 11px;
  color: var(--text-muted);
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--danger);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
}

.logout-btn:hover {
  background-color: var(--danger-light);
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-left h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  padding: 6px;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  cursor: pointer;
}

.content-area {
  padding: 20px 24px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  flex: 1;
}

.simple-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.stat-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

.stat-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 4px;
}

.card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 16px;
}

.card-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.filter-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

table.data-table th {
  background-color: #f8fafc;
  padding: 10px 14px;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 11px;
  border-bottom: 1px solid var(--border-color);
}

table.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

table.data-table tbody tr:hover {
  background-color: #f8fafc;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: #ffffff;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--bg-muted);
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: var(--danger-hover);
}

.btn-sm {
  padding: 4px 8px;
  font-size: 11px;
}

.btn-icon {
  padding: 4px 6px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  background-color: var(--bg-muted);
  color: var(--text-main);
}

.btn-icon.delete:hover {
  background-color: var(--danger-light);
  color: var(--danger);
}

.badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
}

.badge-success { background-color: var(--success-light); color: var(--success); }
.badge-danger { background-color: var(--danger-light); color: var(--danger); }
.badge-warning { background-color: var(--warning-light); color: var(--warning); }
.badge-info { background-color: var(--primary-light); color: var(--primary); }
.badge-neutral { background-color: var(--bg-muted); color: var(--text-muted); }

.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
}

.modal-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-subtle);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}

.modal-body {
  padding: 16px;
  max-height: calc(85vh - 110px);
  overflow-y: auto;
}

.modal-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--border-color);
  background-color: #fafbfc;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.form-control {
  width: 100%;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: #ffffff;
  font-size: 12px;
  color: var(--text-main);
  outline: none;
}

.form-control:focus {
  border-color: var(--border-focus);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.info-panel {
  background-color: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px;
  margin-bottom: 12px;
  font-size: 12px;
}

.info-panel-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 200;
}

.toast {
  padding: 10px 14px;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  font-size: 12px;
  font-weight: 500;
  transform: translateY(10px);
  opacity: 0;
  transition: all 0.2s ease;
}

.toast.active {
  transform: translateY(0);
  opacity: 1;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 16px;
  background-color: var(--bg-main);
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.auth-header {
  text-align: center;
  margin-bottom: 20px;
}

.auth-header h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}

.auth-header p {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 35;
}

@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    transform: translateX(-100%);
    transition: transform 0.2s ease-in-out;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.active {
    display: block;
  }

  .menu-toggle {
    display: block;
  }

  .content-area {
    padding: 16px;
  }

  .dashboard-grid-two {
    grid-template-columns: 1fr !important;
  }
}