.navbar-brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.login-logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.drop-zone {
  border: 2px dashed #dee2e6;
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background-color: #f8f9fa;
  position: relative;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--primary-color);
  background-color: rgba(0, 123, 255, 0.05);
  transform: translateY(-2px);
}

.drop-zone-content {
  pointer-events: none;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  margin-bottom: 8px;
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.file-item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.file-info {
  display: flex;
  align-items: center;
  flex-grow: 1;
}

.file-icon {
  margin-right: 10px;
  font-size: 1.2rem;
}

.file-details {
  flex-grow: 1;
}

.file-name {
  font-weight: 500;
  margin-bottom: 2px;
}

.file-size {
  font-size: 0.8rem;
  color: #6c757d;
}

.file-remove {
  background: none;
  border: none;
  color: #dc3545;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 5px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.file-remove:hover {
  background-color: #f8d7da;
  color: #721c24;
}

.upload-progress {
  margin-top: 10px;
}

.progress {
  height: 8px;
  border-radius: 4px;
}

:root {
  --primary-color: #007bff;
  --primary-hover: #0056b3;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
}

body {
  background-color: var(--light-color);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar-brand {
  font-weight: 600;
  letter-spacing: 0.5px;
}

.card {
  border: none;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
}

.card-header {
  border-radius: 12px 12px 0 0 !important;
  border-bottom: none;
  font-weight: 600;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  border-radius: 8px;
  font-weight: 500;
  padding: 10px 20px;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.form-control, .form-select {
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  padding: 12px 16px;
  transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.table {
  font-size: 0.9rem;
}

.table th {
  font-weight: 600;
  color: var(--dark-color);
  border-bottom: 2px solid #dee2e6;
}

.badge {
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 20px;
}

.alert {
  border: none;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.dropdown-menu {
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.dropdown-item {
  padding: 10px 20px;
  border-radius: 6px;
  margin: 2px 6px;
  transition: all 0.2s ease;
}

.dropdown-item:hover {
  background-color: var(--light-color);
  transform: translateX(2px);
}

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.shadow {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
}

.display-1 {
  font-size: 4rem;
  opacity: 0.3;
}

.bg-light {
  background-color: var(--light-color) !important;
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.9);
  transition: all 0.3s ease;
}

.navbar-dark .navbar-nav .nav-link:hover {
  color: white;
  transform: translateY(-1px);
}

.form-text {
  font-size: 0.8rem;
  color: #6c757d;
}

.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .card {
      margin-bottom: 20px;
  }
  
  .display-1 {
      font-size: 2.5rem;
  }
  
  .table-responsive {
      font-size: 0.8rem;
  }
}