.merge-controls {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  margin: 2rem 0;
}

.merge-settings {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.files-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.file-upload-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.file-upload-area {
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px dashed var(--border-color);
  margin: 0.5rem;
  border-radius: 6px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.file-upload-area:hover {
  border-color: var(--primary-color);
  background: var(--hover-bg);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.file-upload-area.dragover {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: white;
  transform: scale(1.02);
}

.file-info {
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  background: var(--hover-bg);
}

.file-details {
  margin-bottom: 1rem;
  font-size: 0.9rem;
  line-height: 1.4;
}

.file-details strong {
  color: var(--primary-color);
  display: block;
  margin-bottom: 0.5rem;
}

.column-selector {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.column-selector select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: var(--input-bg);
  color: var(--text-color);
  font-size: 0.9rem;
  transition: border-color 0.3s ease;
}

.column-selector select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb), 0.2);
}

.form-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.form-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.action-buttons {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
  flex-wrap: wrap;
  justify-content: center;
}

.action-buttons .btn {
  transition: all 0.3s ease;
  min-width: 120px;
}

.action-buttons .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.action-buttons .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.stat-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.stat-card h4 {
  margin: 0 0 0.5rem 0;
  color: var(--primary-color);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-card .value {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--text-color);
}

.preview-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
  overflow-x: auto;
  display: block;
  max-height: 400px;
  overflow-y: auto;
}

.preview-table th,
.preview-table td {
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  text-align: left;
  white-space: nowrap;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preview-table th {
  background: var(--card-bg);
  font-weight: bold;
  position: sticky;
  top: 0;
  z-index: 10;
}

.preview-table tbody tr:nth-child(even) {
  background: var(--hover-bg);
}

.preview-table tbody tr:hover {
  background: var(--primary-color);
  color: white;
}

.preview-table tbody tr:hover td {
  color: white;
}

@media (max-width: 768px) {
  .merge-controls {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .files-container {
    grid-template-columns: 1fr;
  }
  
  .action-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .action-buttons .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .preview-table {
    font-size: 0.8rem;
  }
  
  .preview-table th,
  .preview-table td {
    padding: 0.3rem;
    max-width: 150px;
  }
  
  .stat-card {
    padding: 1rem;
  }
  
  .stat-card .value {
    font-size: 1.5rem;
  }
  
  .file-upload-area {
    min-height: 100px;
    padding: 1rem;
  }
  
  .file-upload-area i {
    font-size: 1.5rem;
  }
  
  .file-upload-area p {
    font-size: 0.9rem;
  }
}

.en-csv-merge-style-2{display: none;}
.en-csv-merge-style-3{display: none;}
.en-csv-merge-style-4{display: none;}
.en-csv-merge-style-5{display: none;}
.en-csv-merge-style-6{display: none;}
.en-csv-merge-style-7{display: none;}
.en-csv-merge-style-8{display: none;}
.en-csv-merge-style-9{display: none;}
.en-csv-merge-style-10{display: none;}
.en-csv-merge-style-11{display: none;}
.en-csv-merge-style-12{display:none; color:var(--primary-color); font-weight:bold; text-align:center; padding:1rem;}
.en-csv-merge-style-13{font-size:0.9rem; margin-top:0.5rem; opacity:0.8;}
.en-csv-merge-style-14{display: none;}
.en-csv-merge-style-15{display: none;}