:root {
  --primary-bg: #1a1a1a;
  --surface: #2d2d2d;
  --card-bg: rgba(255,255,255,0.05);
}

html, body {
  background: #0f0f0f;
  color: #e2e8f0;
  height: 100%;
}

.wrapper {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.main-header {
  background: linear-gradient(90deg, #1a1a1a 0%, #2d2d2d 100%);
  border-bottom: 2px solid #3d3d3d;
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.main-header .nav-link {
  color: #cbd5e1 !important;
}

.main-header .nav-link:hover {
  color: #fff !important;
}

.main-sidebar {
  background: linear-gradient(180deg, #0f0f0f 0%, #1a1a1a 100%);
  border-right: 1px solid #3d3d3d;
  min-height: calc(100vh - 60px);
}

.brand-link {
  background: #0a0a0a;
  border-bottom: 2px solid #3d3d3d;
  padding: 1rem 0.5rem;
  color: #4da6ff !important;
  font-size: 1.3rem;
  font-weight: bold;
}

.sidebar {
  background: transparent;
}

.nav-sidebar .nav-header {
  color: #94a3b8;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  margin-top: 0.5rem;
}

.nav-sidebar .nav-link {
  color: #cbd5e1;
  border-radius: 0.5rem;
  margin: 0.25rem 0.5rem;
  transition: all 0.3s ease;
}

.nav-sidebar .nav-link:hover {
  background-color: rgba(96, 165, 250, 0.15);
  color: #fff;
  padding-left: 1.5rem;
}

.nav-sidebar .nav-link.active {
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.3) 0%, rgba(59, 130, 246, 0.1) 100%);
  color: #60a5fa;
  border-left: 3px solid #3b82f6;
  padding-left: 1rem !important;
}

.nav-sidebar .nav-icon {
  margin-right: 0.5rem;
  color: #94a3b8;
}

.nav-sidebar .nav-link.active .nav-icon {
  color: #60a5fa;
}

.content-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #0f0f0f;
}

.content-header {
  background: linear-gradient(90deg, #1a1a1a 0%, #2d2d2d 100%);
  border-bottom: 1px solid #3d3d3d;
  padding: 1.5rem;
}

.content-header h1 {
  color: #fff;
  font-size: 1.8rem;
  margin: 0;
}

.breadcrumb {
  background: transparent;
  padding: 0.5rem 0;
}

.breadcrumb-item {
  color: #94a3b8;
}

.breadcrumb-item a {
  color: #60a5fa;
}

.breadcrumb-item.active {
  color: #cbd5e1;
}

.content {
  flex: 1;
  padding: 1.5rem;
  background: #0f0f0f;
}

.card {
  background: #1a1a1a;
  border: 1px solid #3d3d3d;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.card-header {
  background: linear-gradient(90deg, #2d2d2d 0%, #1a1a1a 100%);
  border-bottom: 1px solid #3d3d3d;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  color: #fff;
  font-size: 1.1rem;
  margin: 0;
}

.card-body {
  background: #0f0f0f;
  color: #cbd5e1;
}

.table {
  color: #e2e8f0;
  border-color: #3d3d3d;
  margin: 0;
}

.table thead th {
  background: rgba(45, 45, 45, 0.5);
  color: #cbd5e1;
  border-color: #3d3d3d;
  font-weight: 600;
  padding: 0.75rem;
}

.table tbody td {
  border-color: #3d3d3d;
  padding: 0.75rem;
  background: rgba(15, 15, 15, 0.5);
}

.table tbody tr:hover td {
  background: rgba(45, 45, 45, 0.5);
}

.table tbody td[contenteditable="true"] {
  cursor: text;
  background: rgba(96, 165, 250, 0.1);
  border: 1px dashed rgba(96, 165, 250, 0.3);
}

.table tbody td[contenteditable="true"]:focus {
  outline: none;
  background: rgba(96, 165, 250, 0.2);
  border: 1px solid rgba(96, 165, 250, 0.5);
}

.btn {
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(90deg, #3b82f6 0%, #2563eb 100%);
  border: none;
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(90deg, #2563eb 0%, #1d4ed8 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-outline-danger {
  color: #ef4444;
  border-color: #ef4444;
}

.btn-outline-danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.badge {
  border-radius: 999px;
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
}

.badge-info {
  background: rgba(59, 130, 246, 0.3);
  color: #60a5fa;
}

.text-muted {
  color: #94a3b8 !important;
}

.text-white-50 {
  color: rgba(255, 255, 255, 0.5) !important;
}

.main-footer {
  background: #0a0a0a;
  border-top: 1px solid #3d3d3d;
  color: #94a3b8;
  padding: 1rem;
  text-align: center;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 576px) {
  .content {
    padding: 0.75rem;
  }
  
  .table {
    font-size: 0.85rem;
  }
  
  .table thead th,
  .table tbody td {
    padding: 0.5rem;
  }
}