diff --git a/website/css/style.css b/website/css/style.css
index 34f4c03..1c09b9c 100644
--- a/website/css/style.css
+++ b/website/css/style.css
@@ -1027,18 +1027,41 @@ table.data-table tbody tr.row-orphan-category td {
     background: color-mix(in srgb, var(--surface-hover) 60%, transparent);
 }
 
-/* Assignment page — client table sized to rows (max 50); coach panel matches */
+/* Assignment page — panels fill remaining viewport; lists scroll inside */
+.main-content:has(.assign-page) {
+    display: flex;
+    flex-direction: column;
+    min-height: 100vh;
+    min-height: 100dvh;
+}
+
+.main-content:has(.assign-page) .page-header {
+    flex-shrink: 0;
+}
+
+.main-content:has(.assign-page) #assignContent {
+    flex: 1 1 auto;
+    min-height: 0;
+    display: flex;
+    flex-direction: column;
+}
+
 .assign-page {
     display: flex;
     flex-direction: column;
+    flex: 1 1 auto;
+    min-height: 0;
     gap: 16px;
 }
 
 .assign-layout {
     display: grid;
     grid-template-columns: minmax(260px, min(32vw, 380px)) minmax(0, 1fr);
+    grid-template-rows: minmax(0, 1fr);
     gap: 16px;
-    align-items: start;
+    align-items: stretch;
+    flex: 1 1 auto;
+    min-height: 0;
 }
 
 .assign-layout > .assign-coaches,
@@ -1047,6 +1070,16 @@ table.data-table tbody tr.row-orphan-category td {
     flex-direction: column;
     padding: 0;
     overflow: hidden;
+    height: 100%;
+    max-height: 100%;
+    min-height: 0;
+}
+
+.assign-coaches .assign-panel-body {
+    flex: 1 1 0;
+    min-height: 0;
+    overflow-y: auto;
+    overflow-x: hidden;
 }
 
 .assign-panel-header {
@@ -1066,20 +1099,13 @@ table.data-table tbody tr.row-orphan-category td {
 }
 
 .assign-panel-body {
-    flex: 0 0 auto;
+    flex: 1 1 auto;
     min-height: 0;
     overflow: auto;
     -webkit-overflow-scrolling: touch;
     padding: 6px 8px 10px;
 }
 
-.assign-coaches .assign-panel-footer--align {
-    flex-shrink: 0;
-    margin-top: auto;
-    visibility: hidden;
-    pointer-events: none;
-}
-
 .assign-clients-toolbar {
     flex-shrink: 0;
     padding: 14px 16px;
@@ -1129,16 +1155,18 @@ table.data-table tbody tr.row-orphan-category td {
 }
 
 .assign-table-panel {
-    flex: 0 0 auto;
+    flex: 1 1 auto;
+    min-height: 0;
     display: flex;
     flex-direction: column;
 }
 
 .assign-table-panel .table-wrapper {
-    flex: none;
+    flex: 1 1 auto;
+    min-height: 0;
+    max-height: none;
     overflow: auto;
     box-sizing: border-box;
-    max-height: none;
 }
 
 .assign-panel-footer,
@@ -1195,6 +1223,7 @@ table.data-table tbody tr.row-orphan-category td {
 @media (max-width: 900px) {
     .assign-layout {
         grid-template-columns: 1fr;
+        grid-template-rows: minmax(0, 38%) minmax(0, 1fr);
     }
 }
 
diff --git a/website/js/pages/assignments.js b/website/js/pages/assignments.js
index 211d52d..b7c3a96 100644
--- a/website/js/pages/assignments.js
+++ b/website/js/pages/assignments.js
@@ -10,8 +10,6 @@ let filterCoachSearch = '';
 let clientsByCoach = {};
 let clientPage = 0;
 let selectedClientCodes = new Set();
-let assignResizeObserver = null;
-let assignClientRowHeight = 0;
 
 export async function assignmentsPage() {
     selectedCoachID = null;
@@ -76,7 +74,6 @@ function renderAssignments() {
                     <div class="assign-panel-body">
                         <ul class="coach-list" id="coachList" role="listbox" aria-label="Filter by counselor"></ul>
                     </div>
-                    <div class="assign-panel-footer assign-panel-footer--align" aria-hidden="true"></div>
                 </aside>
 
                 <section class="card assign-clients-card" aria-label="Clients">
@@ -199,78 +196,6 @@ function renderAssignments() {
 
     renderCoachList();
     renderClientRows();
-    setupAssignPanelHeightSync();
-}
-
-function setupAssignPanelHeightSync() {
-    assignResizeObserver?.disconnect();
-    assignResizeObserver = null;
-
-    const clientCard = document.querySelector('.assign-clients-card');
-    if (!clientCard || typeof ResizeObserver === 'undefined') {
-        syncAssignLayoutHeights();
-        return;
-    }
-
-    assignResizeObserver = new ResizeObserver(() => syncAssignLayoutHeights());
-    assignResizeObserver.observe(clientCard);
-    syncAssignLayoutHeights();
-}
-
-function syncAssignClientTableHeight() {
-    const wrapper = document.querySelector('.assign-table-panel .table-wrapper');
-    const table = wrapper?.querySelector('table.data-table');
-    if (!wrapper || !table) return;
-
-    const headerH = table.querySelector('thead')?.offsetHeight ?? 40;
-    const bodyRows = [...table.querySelectorAll('tbody tr')];
-    const dataRows = bodyRows.filter(tr => !tr.querySelector('td[colspan]'));
-
-    let rowH = assignClientRowHeight;
-    if (dataRows.length) {
-        rowH = dataRows[0].offsetHeight;
-        assignClientRowHeight = rowH;
-    } else if (bodyRows.length) {
-        rowH = bodyRows[0].offsetHeight;
-    } else if (!rowH) {
-        rowH = 44;
-    }
-
-    const rowCount = dataRows.length || 1;
-    const bodyH = rowH * Math.min(rowCount, CLIENT_PAGE_SIZE);
-    const maxH = rowH * CLIENT_PAGE_SIZE;
-
-    wrapper.style.height = `${headerH + bodyH}px`;
-    wrapper.style.maxHeight = `${headerH + maxH}px`;
-    wrapper.style.overflowY = 'auto';
-}
-
-function syncAssignCoachPanelHeight() {
-    const coachCard = document.querySelector('.assign-coaches');
-    const clientCard = document.querySelector('.assign-clients-card');
-    const coachBody = document.querySelector('.assign-coaches .assign-panel-body');
-    const clientTablePanel = document.querySelector('.assign-table-panel');
-    const coachFooter = document.querySelector('.assign-coaches .assign-panel-footer--align');
-    const clientFooter = document.querySelector('.assign-clients-footer');
-
-    if (clientFooter && coachFooter) {
-        coachFooter.style.height = `${clientFooter.offsetHeight}px`;
-    }
-    if (coachBody && clientTablePanel) {
-        const h = clientTablePanel.offsetHeight;
-        coachBody.style.height = `${h}px`;
-        coachBody.style.maxHeight = `${h}px`;
-    }
-    if (coachCard && clientCard) {
-        coachCard.style.minHeight = `${clientCard.offsetHeight}px`;
-    }
-}
-
-function syncAssignLayoutHeights() {
-    requestAnimationFrame(() => {
-        syncAssignClientTableHeight();
-        requestAnimationFrame(() => syncAssignCoachPanelHeight());
-    });
 }
 
 function getFilteredCoaches() {
@@ -424,7 +349,6 @@ function renderClientRows() {
         });
         syncSelectAllCb();
         updateSelectionInfo();
-        syncAssignCoachPanelHeight();
         return;
     }
 
@@ -460,7 +384,6 @@ function renderClientRows() {
     });
     syncSelectAllCb(slice.map(c => c.clientCode));
     updateSelectionInfo();
-    syncAssignLayoutHeights();
 }
 
 function getSelectedCodes() {
@@ -488,7 +411,6 @@ function updateSelectionInfo() {
         const sel = document.getElementById('targetCoachSelect');
         if (sel) sel.value = selectedCoachID;
     }
-    syncAssignLayoutHeights();
 }
 
 async function doAssign() {