.csv-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.csv-sidebar {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.csv-section {
    background: #fff;
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.csv-section h3 {
    font-size: 0.9em;
    color: #2c3e50;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    align-items: center;
    gap: 8px;
}

.csv-section h3 i {
    color: #3498db;
}

.csv-upload {
    border: 2px dashed #ddd;
    border-radius: 10px;
    padding: 20px 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: #fafafa;
}

.csv-upload:hover,
.csv-upload.dragover {
    border-color: #3498db;
    background: #f0f7ff;
}

.csv-upload i {
    font-size: 1.6em;
    color: #3498db;
    margin-bottom: 6px;
}

.csv-upload p {
    color: #666;
    font-size: 0.8em;
    margin: 0 0 4px;
}

.csv-hint {
    color: #999;
    font-size: 0.72em;
}

.csv-form-row {
    margin-bottom: 12px;
}

.csv-form-row label {
    display: block;
    font-size: 0.82em;
    color: #555;
    margin-bottom: 5px;
    font-weight: 500;
}

.csv-select {
    width: 100%;
    padding: 7px 8px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.85em;
    background: #fff;
}

.csv-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.82em;
    color: #555;
}

.csv-checkbox input {
    width: 16px;
    height: 16px;
    accent-color: #3498db;
}

.csv-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.csv-btn {
    flex: 1;
    min-width: 70px;
    padding: 9px;
    border: none;
    border-radius: 8px;
    font-size: 0.82em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.csv-btn-primary {
    background: #3498db;
    color: #fff;
}

.csv-btn-primary:hover:not(:disabled) {
    background: #2980b9;
}

.csv-btn-success {
    background: #27ae60;
    color: #fff;
}

.csv-btn-success:hover:not(:disabled) {
    background: #219a52;
}

.csv-btn-outline {
    background: #fff;
    color: #e74c3c;
    border: 1px solid #e74c3c;
}

.csv-btn-outline:hover:not(:disabled) {
    background: #fef2f2;
}

.csv-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.csv-usage-info {
    background: #e8f4fd;
    border-radius: 8px;
    padding: 9px 12px;
    font-size: 0.8em;
    color: #2c3e50;
    text-align: center;
}

.csv-usage-info i {
    color: #3498db;
    margin-right: 4px;
}

.csv-vip-mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    background: rgba(0,0,0,0.75);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    backdrop-filter: blur(2px);
}

.csv-vip-mask-inner {
    text-align: center;
    color: #fff;
    padding: 30px;
}

.csv-vip-mask-icon {
    font-size: 3em;
    margin-bottom: 12px;
}

.csv-vip-mask-title {
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 8px;
}

.csv-vip-mask-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.csv-vip-btn {
    background: #3498db;
    color: #fff;
    text-decoration: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
}

.csv-vip-btn:hover {
    background: #2980b9;
}

.csv-main {
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
}

.csv-preview-area {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    overflow: auto;
    max-height: 520px;
}

.csv-placeholder {
    padding: 50px 20px;
    text-align: center;
    color: #999;
}

.csv-placeholder i {
    font-size: 3em;
    margin-bottom: 12px;
    color: #bdc3c7;
}

.csv-preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82em;
}

.csv-preview-table thead th {
    background: #f1f5f9;
    color: #2c3e50;
    font-weight: 600;
    padding: 10px 12px;
    text-align: left;
    border-bottom: 2px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 2;
}

.csv-preview-table tbody td {
    padding: 8px 12px;
    border-bottom: 1px solid #f1f5f9;
    color: #334155;
    white-space: nowrap;
}

.csv-preview-table tbody tr:hover {
    background: #f8fafc;
}

.csv-preview-caption {
    padding: 10px 14px;
    font-size: 0.78em;
    color: #64748b;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
}

.csv-file-card {
    background: #fff;
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    display: flex;
    align-items: center;
    gap: 14px;
}

.csv-file-icon {
    font-size: 2em;
    color: #3498db;
    width: 48px;
    text-align: center;
}

.csv-file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.csv-file-name {
    font-size: 0.85em;
    font-weight: 600;
    color: #2c3e50;
    word-break: break-all;
}

.csv-file-meta {
    font-size: 0.75em;
    color: #718096;
}

.csv-file-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75em;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
}

.csv-status-pending {
    background: #f1f5f9;
    color: #64748b;
}

.csv-status-processing {
    background: #dbeafe;
    color: #1e40af;
}

.csv-status-done {
    background: #d1fae5;
    color: #065f46;
}

.csv-tips {
    background: #fff;
    border-radius: 12px;
    padding: 18px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.csv-tips h4 {
    font-size: 0.95em;
    color: #2c3e50;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.csv-tips h4 i {
    color: #f39c12;
}

.csv-tip-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.csv-tip-item {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 10px;
    border-left: 3px solid #3498db;
}

.csv-tip-item strong {
    display: block;
    font-size: 0.85em;
    color: #2c3e50;
    margin-bottom: 3px;
}

.csv-tip-item p {
    font-size: 0.75em;
    color: #666;
    margin: 0;
    line-height: 1.5;
}

.csv-toast{position:fixed;top:20px;left:50%;transform:translateX(-50%) translateY(-20px);background:#333;color:#fff;padding:10px 20px;border-radius:8px;font-size:0.9em;z-index:9999;opacity:0;transition:all 0.3s ease;pointer-events:none;}.csv-toast.show{opacity:1;transform:translateX(-50%) translateY(0);}.csv-toast.success{background:#27ae60;}.csv-toast.error{background:#e74c3c;}.csv-toast.info{background:#3498db;}
.csv-status-error{background:#fee2e2;color:#991b1b;}
@media (max-width: 768px) {
    .csv-container {
        grid-template-columns: 1fr;
    }
    .csv-tip-grid {
        grid-template-columns: 1fr;
    }
    .csv-preview-area {
        max-height: 360px;
    }
}