body {
  margin-top: 20px;
  color: #1a202c;
  text-align: left;
  background-color: #e2e8f0;
}
.main-body {
  padding: 15px;
}

.nav-link {
  color: #4a5568;
}
.card {
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  word-wrap: break-word;
  background-color: #fff;
  background-clip: border-box;
  border: 0 solid rgba(0, 0, 0, 0.125);
  border-radius: 0.25rem;
}

.card-body {
  flex: 1 1 auto;
  min-height: 1px;
  padding: 1rem;
}

.gutters-sm {
  margin-right: -8px;
  margin-left: -8px;
}

.gutters-sm > .col,
.gutters-sm > [class*='col-'] {
  padding-right: 8px;
  padding-left: 8px;
}
.mb-3,
.my-3 {
  margin-bottom: 1rem !important;
}

.bg-gray-300 {
  background-color: #e2e8f0;
}
.h-100 {
  height: 100% !important;
}
.shadow-none {
  box-shadow: none !important;
}
.list-group-item {
  border: none;
  padding: 1rem 1.5rem;
  color: #475569;
  transition: all 0.2s;
}

.list-group-item:hover {
  background-color: #f1f5f9;
  color: #0f172a;
}

.list-group-item.active {
  background-color: #e2e8f0;
  color: #0f172a;
  border: none;
}

.list-group-item i {
  font-size: 1.25rem;
}
.rounded-circle {
  border: 3px solid #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.badge {
  font-size: 0.75rem;
  padding: 0.35em 0.65em;
}

.text-muted {
  color: #64748b !important;
}
.card {
  border: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-header {
  background-color: transparent;
  border-bottom: 1px solid #e2e8f0;
  padding: 1.5rem;
}

.card-body {
  padding: 1.5rem;
}

.form-label {
  color: #475569;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-control {
  border: 1px solid #e2e8f0;
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  transition: all 0.2s;
}

.form-control:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control.is-invalid {
  border-color: #ef4444;
}

.btn-primary {
  background-color: #3b82f6;
  border: none;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary:hover:not(:disabled) {
  background-color: #2563eb;
}

.btn-primary:disabled {
  background-color: #94a3b8;
  cursor: not-allowed;
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  .card-body {
    padding: 1rem;
  }
}
