        .bulk-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .step {
            display: none;
        }
        .step.active {
            display: block;
        }
        .step-header {
            margin-bottom: 24px;
        }
        .step-header h2 {
            font-size: 24px;
            color: #1a2d5e;
            font-weight: 700;
        }
        .step-header p {
            color: #64748b;
            margin-top: 8px;
        }
        .file-upload-area {
            border: 2px dashed #cbd5e1;
            border-radius: 16px;
            padding: 40px;
            text-align: center;
            cursor: pointer;
            transition: 0.2s;
            background: #fafbfc;
        }
        .file-upload-area:hover {
            border-color: #3f64bb;
            background: #f8fafc;
        }
        .file-upload-area i {
            font-size: 48px;
            color: #3f64bb;
            margin-bottom: 16px;
        }
        .file-upload-area h3 {
            color: #1a2d5e;
            margin-bottom: 8px;
        }
        .file-upload-area p {
            color: #94a3b8;
            font-size: 14px;
        }
        .file-list {
            margin-top: 20px;
        }
        .file-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 16px;
            background: #f8fafc;
            border-radius: 8px;
            margin-bottom: 8px;
        }
        .file-item i {
            color: #3f64bb;
            margin-right: 12px;
        }
        .file-item .file-size {
            color: #94a3b8;
            font-size: 13px;
        }
        .progress-container {
            background: #f1f5f9;
            border-radius: 8px;
            height: 8px;
            margin-top: 20px;
            overflow: hidden;
        }
        .progress-bar {
            height: 100%;
            background: linear-gradient(90deg, #3f64bb, #6e93e0);
            transition: width 0.3s;
            width: 0%;
        }
        .csv-preview {
            background: #f8fafc;
            border-radius: 8px;
            padding: 16px;
            margin: 16px 0;
            max-height: 300px;
            overflow: auto;
        }
        .csv-preview table {
            font-size: 13px;
        }
        .csv-preview table th {
            background: #e2e8f0;
            position: sticky;
            top: 0;
        }
        .validation-errors {
            background: #fee2e2;
            border-left: 4px solid #dc2626;
            padding: 16px;
            border-radius: 8px;
            margin: 16px 0;
        }
        .validation-errors ul {
            margin: 8px 0 0 20px;
        }
        .validation-errors li {
            color: #dc2626;
            font-size: 14px;
        }
        .success-message {
            background: #d1fae5;
            border-left: 4px solid #10b981;
            padding: 16px;
            border-radius: 8px;
            margin: 16px 0;
            color: #065f46;
        }
        .btn-group {
            display: flex;
            gap: 12px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: #3f64bb;
            color: white;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-family: 'Poppins', sans-serif;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background: #2d4a9e;
        }
        .btn-primary:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1e293b;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-family: 'Poppins', sans-serif;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary:hover {
            background: #cbd5e1;
        }
        .btn-success {
            background: #10b981;
            color: white;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-family: 'Poppins', sans-serif;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-success:hover {
            background: #059669;
        }
        .btn-danger {
            background: #ef4444;
            color: white;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-family: 'Poppins', sans-serif;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-danger:hover {
            background: #dc2626;
        }
        .template-editor {
            background: white;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            padding: 20px;
        }
        .template-editor label {
            display: block;
            font-weight: 600;
            color: #1a2d5e;
            margin-bottom: 8px;
        }
        .template-editor input,
        .template-editor textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-family: 'Poppins', sans-serif;
            margin-bottom: 16px;
        }
        .template-editor textarea {
            min-height: 120px;
            resize: vertical;
        }
        .template-editor input:focus,
        .template-editor textarea:focus {
            outline: none;
            border-color: #3f64bb;
            box-shadow: 0 0 0 3px rgba(63,100,187,0.15);
        }
        .results-summary {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .result-card {
            background: white;
            padding: 16px;
            border-radius: 12px;
            border: 1px solid #e2e8f0;
            text-align: center;
        }
        .result-card .number {
            font-size: 32px;
            font-weight: 700;
        }
        .result-card .label {
            color: #64748b;
            font-size: 14px;
        }
        .result-card.success .number { color: #10b981; }
        .result-card.failed .number { color: #ef4444; }
        .result-card.total .number { color: #3f64bb; }