diff --git a/app.js b/app.js
index 9493440..db22e57 100644
--- a/app.js
+++ b/app.js
@@ -1770,12 +1770,16 @@ const csvColumnLabels = {
 // Preferred column order (most important first)
 const csvColumnOrder = ['transaction_date', 'simple_name', 'amount_rub', 'category', 'subcategory', 'microcategory', 'transaction_description', 'merchant_name', 'account', 'card_info', 'location', 'amount_original', 'currency_original', 'mcc', 'info_source', 'processing_date', 'comment'];
 
+// Modal state
+let currentTransactions = [];
+let currentColumns = [];
+let currentSortColumn = null;
+let currentSortDirection = 'desc';
+
 // Open transaction modal
 function openTransactionModal(item) {
     const modal = document.getElementById('transaction-modal');
     const modalTitle = document.getElementById('modal-title');
-    const modalThead = document.getElementById('modal-thead');
-    const modalTbody = document.getElementById('modal-tbody');
 
     // Set title
     modalTitle.textContent = item.name;
@@ -1788,89 +1792,208 @@ function openTransactionModal(item) {
         transactions = [item];
     }
 
-    // Clear previous content
-    modalThead.innerHTML = '';
-    modalTbody.innerHTML = '';
-
     if (transactions.length === 0) {
+        const modalTbody = document.getElementById('modal-tbody');
+        const modalThead = document.getElementById('modal-thead');
+        modalThead.innerHTML = '';
         modalTbody.innerHTML = '<tr><td colspan="100%">No transaction data available</td></tr>';
         modal.style.display = 'flex';
         setupModalListeners();
         return;
     }
 
-    // Sort by date descending
-    transactions.sort((a, b) => {
-        const dateA = a.originalRow?.transaction_date || a.date || '';
-        const dateB = b.originalRow?.transaction_date || b.date || '';
-        return dateB.localeCompare(dateA);
+    // Get columns from first transaction
+    const sampleRow = transactions[0].originalRow;
+    currentColumns = csvColumnOrder.filter(col => col in sampleRow);
+    currentTransactions = transactions;
+
+    // Initial sort by amount descending
+    currentSortColumn = 'amount_rub';
+    currentSortDirection = 'desc';
+
+    renderTransactionTable();
+    modal.style.display = 'flex';
+
+    // Reset scroll position to top-left
+    const tableContainer = document.querySelector('.modal-table-container');
+    tableContainer.scrollTop = 0;
+    tableContainer.scrollLeft = 0;
+
+    setupModalListeners();
+}
+
+// Render the transaction table with current sort
+function renderTransactionTable() {
+    const modalThead = document.getElementById('modal-thead');
+    const modalTbody = document.getElementById('modal-tbody');
+
+    // Sort transactions
+    const sortedTransactions = [...currentTransactions].sort((a, b) => {
+        const aVal = a.originalRow?.[currentSortColumn] ?? '';
+        const bVal = b.originalRow?.[currentSortColumn] ?? '';
+
+        // Numeric sort for amount columns
+        if (currentSortColumn === 'amount_rub' || currentSortColumn === 'amount_original') {
+            const aNum = parseFloat(aVal) || 0;
+            const bNum = parseFloat(bVal) || 0;
+            return currentSortDirection === 'asc' ? aNum - bNum : bNum - aNum;
+        }
+
+        // String sort for other columns
+        const aStr = String(aVal);
+        const bStr = String(bVal);
+        const cmp = aStr.localeCompare(bStr);
+        return currentSortDirection === 'asc' ? cmp : -cmp;
     });
 
-    // Get all columns from the first transaction's originalRow
-    const sampleRow = transactions[0].originalRow;
-    const availableColumns = csvColumnOrder.filter(col => col in sampleRow);
+    // Clear content
+    modalThead.innerHTML = '';
+    modalTbody.innerHTML = '';
 
-    // Build header
+    // Build header with sort indicators
     const headerRow = document.createElement('tr');
-    availableColumns.forEach(col => {
+    currentColumns.forEach(col => {
         const th = document.createElement('th');
         th.textContent = csvColumnLabels[col] || col;
+        th.dataset.column = col;
+
+        // Add sort class
+        if (col === currentSortColumn) {
+            th.classList.add(currentSortDirection === 'asc' ? 'sort-asc' : 'sort-desc');
+        }
+
+        // Click to sort
+        th.addEventListener('click', () => {
+            if (currentSortColumn === col) {
+                currentSortDirection = currentSortDirection === 'asc' ? 'desc' : 'asc';
+            } else {
+                currentSortColumn = col;
+                currentSortDirection = 'asc';
+            }
+            renderTransactionTable();
+        });
+
         headerRow.appendChild(th);
     });
     modalThead.appendChild(headerRow);
 
     // Build rows
-    transactions.forEach(transaction => {
+    sortedTransactions.forEach(transaction => {
         const row = document.createElement('tr');
-        availableColumns.forEach(col => {
+
+        currentColumns.forEach(col => {
             const td = document.createElement('td');
             let value = transaction.originalRow[col];
 
-            // Format amount values
-            if ((col === 'amount' || col === 'original_amount') && typeof value === 'number') {
+            if ((col === 'amount_rub' || col === 'amount_original') && typeof value === 'number') {
                 value = value.toLocaleString();
             }
 
             td.textContent = value !== undefined && value !== null ? value : '';
-            td.title = td.textContent; // Show full text on hover
+            td.title = td.textContent;
             row.appendChild(td);
         });
+
+        // Row click opens detail modal
+        row.addEventListener('click', () => openRowDetailModal(transaction));
         modalTbody.appendChild(row);
     });
+}
+
+// Open the row detail modal
+function openRowDetailModal(transaction) {
+    const modal = document.getElementById('row-detail-modal');
+    const title = document.getElementById('row-detail-title');
+    const body = document.getElementById('row-detail-body');
+
+    const name = transaction.originalRow?.simple_name || transaction.name || 'Transaction';
+    title.textContent = name;
+
+    body.innerHTML = '';
+
+    currentColumns.forEach(col => {
+        // Skip simple_name since it's already shown in the title
+        if (col === 'simple_name') return;
+
+        const value = transaction.originalRow[col];
+
+        const itemDiv = document.createElement('div');
+        itemDiv.className = 'row-detail-item';
+
+        const labelSpan = document.createElement('span');
+        labelSpan.className = 'row-detail-label';
+        labelSpan.textContent = csvColumnLabels[col] || col;
+
+        const valueSpan = document.createElement('span');
+        valueSpan.className = 'row-detail-value';
+        valueSpan.textContent = value;
+
+        itemDiv.appendChild(labelSpan);
+        itemDiv.appendChild(valueSpan);
+        body.appendChild(itemDiv);
+    });
 
     modal.style.display = 'flex';
-    setupModalListeners();
+    setupRowDetailModalListeners();
+}
+
+// Close row detail modal
+function closeRowDetailModal() {
+    const modal = document.getElementById('row-detail-modal');
+    modal.style.display = 'none';
+}
+
+// Setup row detail modal listeners
+function setupRowDetailModalListeners() {
+    const modal = document.getElementById('row-detail-modal');
+    const closeBtn = document.getElementById('row-detail-close');
+
+    closeBtn.onclick = (e) => {
+        e.stopPropagation();
+        closeRowDetailModal();
+    };
+
+    modal.onclick = function(e) {
+        if (e.target === modal) {
+            closeRowDetailModal();
+        }
+    };
 }
 
 // Close transaction modal
 function closeTransactionModal() {
     const modal = document.getElementById('transaction-modal');
     modal.style.display = 'none';
-    document.removeEventListener('keydown', handleModalEscape);
 }
 
-// Handle Escape key to close modal
-function handleModalEscape(e) {
+// Global escape key handler for all modals
+function handleGlobalEscape(e) {
     if (e.key === 'Escape') {
-        closeTransactionModal();
+        const rowDetailModal = document.getElementById('row-detail-modal');
+        const transactionModal = document.getElementById('transaction-modal');
+
+        // Close row detail first if open, then transaction modal
+        if (rowDetailModal.style.display !== 'none') {
+            closeRowDetailModal();
+        } else if (transactionModal.style.display !== 'none') {
+            closeTransactionModal();
+        }
     }
 }
 
+// Setup global escape listener once
+document.addEventListener('keydown', handleGlobalEscape);
+
 // Setup modal close listeners
 function setupModalListeners() {
     const modal = document.getElementById('transaction-modal');
     const closeBtn = document.getElementById('modal-close');
 
-    // Close on X button click
     closeBtn.onclick = closeTransactionModal;
 
-    // Close on backdrop click
     modal.onclick = function(e) {
         if (e.target === modal) {
             closeTransactionModal();
         }
     };
-
-    // Close on Escape key
-    document.addEventListener('keydown', handleModalEscape);
 }
diff --git a/index.html b/index.html
index 78e37d1..469047e 100644
--- a/index.html
+++ b/index.html
@@ -54,6 +54,13 @@
             </div>
         </div>
     </div>
+    <div id="row-detail-modal" class="modal-overlay" style="display: none;">
+        <div class="row-detail-content">
+            <button class="modal-close" id="row-detail-close">&times;</button>
+            <h3 id="row-detail-title">Transaction Details</h3>
+            <div id="row-detail-body"></div>
+        </div>
+    </div>
     <script src="app.js"></script>
 </body>
 </html> 
\ No newline at end of file
diff --git a/styles.css b/styles.css
index cafedec..4784c39 100644
--- a/styles.css
+++ b/styles.css
@@ -440,7 +440,7 @@ body {
 
 .modal-table-container {
     flex: 1;
-    overflow: auto;
+    overflow: scroll;
     padding: 0;
 }
 
@@ -496,3 +496,109 @@ body {
     }
 }
 
+/* Row detail modal styles */
+.row-detail-content {
+    position: relative;
+    width: 90vw;
+    max-width: 500px;
+    max-height: 80vh;
+    background-color: white;
+    border-radius: 12px;
+    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
+    padding: 24px;
+    overflow-y: auto;
+}
+
+.row-detail-content .modal-close {
+    position: absolute;
+    top: 12px;
+    right: 12px;
+}
+
+.row-detail-content h3 {
+    margin: 0 0 20px 0;
+    font-size: 18px;
+    color: #333;
+    padding-right: 30px;
+}
+
+#row-detail-body {
+    display: table;
+    width: 100%;
+    border-collapse: collapse;
+}
+
+.row-detail-item {
+    display: table-row;
+}
+
+.row-detail-item:hover {
+    background-color: #f8f9fa;
+}
+
+.row-detail-label {
+    display: table-cell;
+    padding: 8px 32px 8px 0;
+    font-size: 13px;
+    color: #999;
+    font-weight: 400;
+    white-space: nowrap;
+    vertical-align: top;
+    border-bottom: 1px solid #eee;
+    min-width: 140px;
+}
+
+.row-detail-value {
+    display: table-cell;
+    padding: 8px 0;
+    font-size: 13px;
+    color: #222;
+    font-weight: 600;
+    word-break: break-word;
+    border-bottom: 1px solid #eee;
+}
+
+.row-detail-item:last-child .row-detail-label,
+.row-detail-item:last-child .row-detail-value {
+    border-bottom: none;
+}
+
+/* Sortable table header styles */
+.transaction-table th {
+    cursor: pointer;
+    user-select: none;
+    position: relative;
+    padding-right: 20px !important;
+}
+
+.transaction-table th:hover {
+    background-color: #f0f0f0;
+}
+
+.transaction-table th::after {
+    content: '';
+    position: absolute;
+    right: 6px;
+    top: 50%;
+    transform: translateY(-50%);
+    border: 4px solid transparent;
+    opacity: 0.3;
+}
+
+.transaction-table th.sort-asc::after {
+    border-bottom-color: #333;
+    border-top: none;
+    opacity: 1;
+}
+
+.transaction-table th.sort-desc::after {
+    border-top-color: #333;
+    border-bottom: none;
+    opacity: 1;
+}
+
+.transaction-table tbody tr {
+    cursor: pointer;
+    transition: background-color 0.15s;
+}
+