diff --git a/static/css/components/csp-utilities.css b/static/css/components/csp-utilities.css
new file mode 100644
index 00000000..cb25807d
--- /dev/null
+++ b/static/css/components/csp-utilities.css
@@ -0,0 +1,150 @@
+/* CSP-compliant utility classes — replaces inline style="" attributes */
+
+/* ── Empty state icons (large, muted) ── */
+.empty-state-icon {
+  font-size: 48px;
+  color: #ddd;
+  margin-bottom: 16px;
+}
+.empty-state-icon.error {
+  color: #f44336;
+}
+.empty-state-icon.spinner {
+  color: #666;
+}
+
+/* ── Dialog header icons (accent color) ── */
+.dialog-header-icon {
+  color: #ff5e3a;
+}
+
+/* ── Icon spacing ── */
+.icon-mr { margin-right: 5px; }
+.icon-ml { margin-left: 4px; font-size: 12px; }
+
+/* ── Success check icon ── */
+.check-icon { color: #48bb78; }
+
+/* ── Move dialog ── */
+.move-dialog-hint {
+  margin: 0 0 12px;
+  color: #718096;
+  font-size: 14px;
+}
+.folder-select-container {
+  max-height: 220px;
+  overflow-y: auto;
+}
+
+/* ── Share dialog sections ── */
+.share-section {
+  margin: 15px 0;
+}
+
+/* ── Search spinner ── */
+.search-spinner {
+  margin-right: 8px;
+}
+
+/* ── Search empty state text ── */
+.search-empty-text {
+  color: var(--text-secondary, #64748b);
+}
+
+/* ── Notification upload current file ── */
+.notif-upload-current {
+  font-size: 11px;
+  color: #64748b;
+  margin: 3px 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+/* ── Login auth hint ── */
+.auth-hint {
+  color: var(--text-secondary, #666);
+  margin-top: 4px;
+  display: block;
+}
+
+/* ── About modal (userMenu.js profile popup) ── */
+.about-modal-body { max-width: 380px; }
+.about-modal-header { text-align: center; padding: 20px 20px 0; }
+.about-modal-avatar {
+  width: 64px;
+  height: 64px;
+  border-radius: 50%;
+  background: linear-gradient(135deg, #3b82f6, #6366f1);
+  color: #fff;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 24px;
+  font-weight: 700;
+  margin-bottom: 12px;
+}
+.about-modal-username { margin: 0; font-size: 18px; color: #1a1a2e; }
+.about-modal-email { margin: 4px 0 0; font-size: 13px; color: #64748b; }
+.about-modal-role {
+  display: inline-block;
+  margin-top: 8px;
+  padding: 2px 10px;
+  border-radius: 10px;
+  font-size: 11px;
+  font-weight: 600;
+}
+.about-modal-role-admin { background: #dbeafe; color: #1d4ed8; }
+.about-modal-role-user { background: #f1f5f9; color: #64748b; }
+.about-modal-storage { padding: 16px 20px; }
+.about-modal-storage-label {
+  font-size: 12px;
+  color: #64748b;
+  text-transform: uppercase;
+  letter-spacing: .05em;
+  margin-bottom: 6px;
+}
+.about-modal-storage-label i { margin-right: 4px; }
+.about-modal-bar-bg {
+  background: #f1f5f9;
+  border-radius: 6px;
+  height: 8px;
+  overflow: hidden;
+  margin-bottom: 4px;
+}
+.about-modal-bar-fill {
+  height: 100%;
+  border-radius: 6px;
+  transition: width .3s;
+}
+.about-modal-bar-text { font-size: 12px; color: #64748b; text-align: right; }
+.about-modal-footer { padding: 0 20px 16px; display: flex; justify-content: center; }
+.about-modal-close-btn {
+  padding: 8px 24px;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  background: #fff;
+  color: #334155;
+  font-size: 13px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: background .15s;
+}
+
+/* ── Dark theme overrides ── */
+[data-theme="dark"] .empty-state-icon { color: #475569; }
+[data-theme="dark"] .empty-state-icon.error { color: #ef4444; }
+[data-theme="dark"] .about-modal-username { color: #f1f5f9; }
+[data-theme="dark"] .about-modal-email { color: #94a3b8; }
+[data-theme="dark"] .about-modal-role-admin { background: #1e3a5f; color: #60a5fa; }
+[data-theme="dark"] .about-modal-role-user { background: #334155; color: #94a3b8; }
+[data-theme="dark"] .about-modal-storage-label { color: #94a3b8; }
+[data-theme="dark"] .about-modal-bar-bg { background: #334155; }
+[data-theme="dark"] .about-modal-bar-text { color: #94a3b8; }
+[data-theme="dark"] .about-modal-close-btn {
+  background: #1e293b;
+  border-color: #334155;
+  color: #cbd5e1;
+}
+[data-theme="dark"] .move-dialog-hint { color: #94a3b8; }
+[data-theme="dark"] .search-empty-text { color: #94a3b8; }
diff --git a/static/css/components/icons.css b/static/css/components/icons.css
new file mode 100644
index 00000000..f2ba2023
--- /dev/null
+++ b/static/css/components/icons.css
@@ -0,0 +1,19 @@
+/* SVG icon base styles (replaces inline <style> from icons.js) */
+.oxi-icon {
+  display: inline-block;
+  width: 1em;
+  height: 1em;
+  vertical-align: -0.125em;
+  fill: currentColor;
+  overflow: hidden;
+  flex-shrink: 0;
+}
+
+.oxi-icon-spin {
+  animation: oxi-spin 1s linear infinite;
+}
+
+@keyframes oxi-spin {
+  from { transform: rotate(0deg); }
+  to   { transform: rotate(360deg); }
+}
diff --git a/static/css/main.css b/static/css/main.css
index 2248769b..c6d554b8 100755
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -24,6 +24,8 @@
 @import url("./components/multiSelect.css");
 @import url("./components/spinner.css");
 @import url("./components/search.css");
+@import url("./components/icons.css");
+@import url("./components/csp-utilities.css");
 
 /* Theme */
 @import url("./themes/dark.css");
diff --git a/static/css/views/auth.css b/static/css/views/auth.css
index 4f406106..336bf33e 100755
--- a/static/css/views/auth.css
+++ b/static/css/views/auth.css
@@ -126,6 +126,9 @@
     cursor: not-allowed;
 }
 
+.auth-subtitle { margin: 20px 0; color: #6b7280; font-size: 14px; }
+.auth-action-wrap { margin-top: 20px; }
+
 /* SSO / OIDC button */
 .auth-button-oidc {
     background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
@@ -140,6 +143,14 @@
     box-shadow: 0 6px 20px rgba(45, 55, 72, 0.4);
 }
 
+.auth-button-sso {
+    background: #4f46e5;
+    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
+}
+.auth-button-sso:hover {
+    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
+}
+
 .auth-button-oidc i {
     font-size: 14px;
 }
diff --git a/static/js/app/main.js b/static/js/app/main.js
index e9b55aba..306e01c9 100755
--- a/static/js/app/main.js
+++ b/static/js/app/main.js
@@ -16,9 +16,9 @@ const ACTIONS_BAR_TEMPLATES = {
         <div class="action-buttons">
             <div class="upload-dropdown" id="upload-dropdown">
                 <button class="btn btn-primary" id="upload-btn">
-                    <i class="fas fa-cloud-upload-alt" style="margin-right: 5px;"></i>
+                    <i class="fas fa-cloud-upload-alt icon-mr"></i>
                     <span data-i18n="actions.upload">Upload</span>
-                    <i class="fas fa-caret-down" style="margin-left: 4px; font-size: 12px;"></i>
+                    <i class="fas fa-caret-down icon-ml"></i>
                 </button>
                 <div class="upload-dropdown-menu" id="upload-dropdown-menu">
                     <button class="upload-dropdown-item" id="upload-files-btn">
@@ -32,7 +32,7 @@ const ACTIONS_BAR_TEMPLATES = {
                 </div>
             </div>
             <button class="btn btn-secondary" id="new-folder-btn">
-                <i class="fas fa-folder-plus" style="margin-right: 5px;"></i>
+                <i class="fas fa-folder-plus icon-mr"></i>
                 <span data-i18n="actions.new_folder">New folder</span>
             </button>
         </div>
@@ -75,7 +75,7 @@ const ACTIONS_BAR_TEMPLATES = {
     recent: `
         <div class="action-buttons">
             <button class="btn btn-secondary" id="clear-recent-btn">
-                <i class="fas fa-broom" style="margin-right: 5px;"></i>
+                <i class="fas fa-broom icon-mr"></i>
                 <span data-i18n="actions.clear_recent">Clear recent</span>
             </button>
         </div>
diff --git a/static/js/app/navigation.js b/static/js/app/navigation.js
index 801b9e49..662fb974 100755
--- a/static/js/app/navigation.js
+++ b/static/js/app/navigation.js
@@ -184,7 +184,7 @@ function switchToFavoritesView() {
         if (filesGridError) {
             filesGridError.innerHTML = `
                 <div class="empty-state">
-                    <i class="fas fa-exclamation-circle" style="font-size: 48px; color: #f44336; margin-bottom: 16px;"></i>
+                    <i class="fas fa-exclamation-circle empty-state-icon error"></i>
                     <p>Error loading the favorites module</p>
                 </div>
             `;
@@ -215,7 +215,7 @@ function switchToRecentFilesView() {
         if (filesGridError) {
             filesGridError.innerHTML = `
                 <div class="empty-state">
-                    <i class="fas fa-exclamation-circle" style="font-size: 48px; color: #f44336; margin-bottom: 16px;"></i>
+                    <i class="fas fa-exclamation-circle empty-state-icon error"></i>
                     <p>Error loading the recent files module</p>
                 </div>
             `;
diff --git a/static/js/app/searchView.js b/static/js/app/searchView.js
index 23b78dbe..7879cab7 100755
--- a/static/js/app/searchView.js
+++ b/static/js/app/searchView.js
@@ -15,7 +15,7 @@ async function performSearch(query, sortBy) {
         if (filesGrid) {
             filesGrid.innerHTML = `
                 <div class="search-results-header">
-                    <h3><i class="fas fa-spinner fa-spin" style="margin-right:8px;"></i> Searching for "${query}"...</h3>
+                    <h3><i class="fas fa-spinner fa-spin search-spinner"></i> Searching for "${query}"...</h3>
                 </div>
             `;
         }
diff --git a/static/js/app/trashView.js b/static/js/app/trashView.js
index 32473729..50dbb2a9 100755
--- a/static/js/app/trashView.js
+++ b/static/js/app/trashView.js
@@ -27,7 +27,7 @@ async function loadTrashItems() {
             const emptyState = document.createElement('div');
             emptyState.className = 'empty-state';
             emptyState.innerHTML = `
-                <i class="fas fa-trash" style="font-size: 48px; color: #ddd; margin-bottom: 16px;"></i>
+                <i class="fas fa-trash empty-state-icon"></i>
                 <p>${window.i18n ? window.i18n.t('trash.empty_state') : 'The trash is empty'}</p>
             `;
             elements.filesGrid.appendChild(emptyState);
diff --git a/static/js/app/ui.js b/static/js/app/ui.js
index f6979195..b07a221e 100755
--- a/static/js/app/ui.js
+++ b/static/js/app/ui.js
@@ -48,10 +48,10 @@ const ui = {
                 <div class="context-menu-item" id="view-file-option">
                     <i class="fas fa-eye"></i> <span data-i18n="actions.view">View</span>
                 </div>
-                <div class="context-menu-item" id="wopi-edit-file-option" style="display:none">
+                <div class="context-menu-item hidden" id="wopi-edit-file-option">
                     <i class="fas fa-file-word"></i> <span>Edit in Office</span>
                 </div>
-                <div class="context-menu-item" id="wopi-edit-file-tab-option" style="display:none">
+                <div class="context-menu-item hidden" id="wopi-edit-file-tab-option">
                     <i class="fas fa-external-link-alt"></i> <span>Edit in Office (new tab)</span>
                 </div>
                 <div class="context-menu-item" id="download-file-option">
@@ -87,7 +87,7 @@ const ui = {
             renameDialog.innerHTML = `
                 <div class="rename-dialog-content">
                     <div class="rename-dialog-header">
-                        <i class="fas fa-pen" style="color:#ff5e3a"></i>
+                        <i class="fas fa-pen dialog-header-icon"></i>
                         <span data-i18n="dialogs.rename_folder">Rename</span>
                     </div>
                     <div class="rename-dialog-body">
@@ -110,13 +110,13 @@ const ui = {
             moveDialog.innerHTML = `
                 <div class="rename-dialog-content">
                     <div class="rename-dialog-header">
-                        <i class="fas fa-arrows-alt" style="color:#ff5e3a"></i>
+                        <i class="fas fa-arrows-alt dialog-header-icon"></i>
                         <span data-i18n="dialogs.move_file">Move</span>
                     </div>
                     <div class="rename-dialog-body">
-                        <p style="margin:0 0 12px;color:#718096;font-size:14px" data-i18n="dialogs.select_destination">Select destination folder:</p>
+                        <p class="move-dialog-hint" data-i18n="dialogs.select_destination">Select destination folder:</p>
                         <div id="move-dialog-breadcrumb" class="move-dialog-breadcrumb"></div>
-                        <div id="folder-select-container" style="max-height:220px;overflow-y:auto;">
+                        <div id="folder-select-container" class="folder-select-container">
                         </div>
                     </div>
                     <div class="rename-dialog-buttons">
@@ -137,14 +137,14 @@ const ui = {
             shareDialog.innerHTML = `
                 <div class="share-dialog-content">
                     <div class="share-dialog-header">
-                        <i class="fas fa-share-alt" style="color:#ff5e3a"></i>
+                        <i class="fas fa-share-alt dialog-header-icon"></i>
                         <span data-i18n="dialogs.share_file">Share file</span>
                     </div>
                     <div class="shared-item-info">
                         <strong>Item:</strong> <span id="shared-item-name"></span>
                     </div>
 
-                    <div id="existing-shares-section" style="display:none; margin: 15px 0;">
+                    <div id="existing-shares-section" class="share-section hidden">
                         <h3 data-i18n="dialogs.existing_shares">Existing shared links</h3>
                         <div id="existing-shares-container"></div>
                     </div>
@@ -181,7 +181,7 @@ const ui = {
                         </div>
                     </div>
 
-                    <div id="new-share-section" style="display:none; margin: 15px 0;">
+                    <div id="new-share-section" class="share-section hidden">
                         <h3 data-i18n="dialogs.generated_link">Generated link</h3>
                         <div class="form-group">
                             <input type="text" id="generated-share-url" readonly>
@@ -232,7 +232,7 @@ const ui = {
             notificationDialog.innerHTML = `
                 <div class="share-dialog-content">
                     <div class="share-dialog-header">
-                        <i class="fas fa-envelope" style="color:#ff5e3a"></i>
+                        <i class="fas fa-envelope dialog-header-icon"></i>
                         <span data-i18n="dialogs.notify">Notify shared link</span>
                     </div>
 
@@ -1143,12 +1143,14 @@ const ui = {
                 <i class="${isFileFav ? 'fas' : 'far'} fa-star"></i>
             </button>
             <div class="file-icon ${iconSpecialClass}">
-                ${iconSpecialClass === 'image-icon' ? `<img class="file-thumb" src="/api/files/${file.id}/thumbnail/icon" loading="lazy" alt="" onerror="this.style.display='none'">` : ''}
+                ${iconSpecialClass === 'image-icon' ? `<img class="file-thumb" src="/api/files/${file.id}/thumbnail/icon" loading="lazy" alt="">` : ''}
                 <i class="${iconClass}"></i>
             </div>
             <div class="file-name">${escapeHtml(file.name)}</div>
             <div class="file-info">Modified ${formattedDate.split(' ')[0]}</div>
         `;
+        var thumb = el.querySelector('.file-thumb');
+        if (thumb) thumb.addEventListener('error', function() { this.style.display = 'none'; });
         this._bindStarClick(el);
         return el;
     },
@@ -1181,7 +1183,7 @@ const ui = {
             <div class="list-item-checkbox"><input type="checkbox" class="item-checkbox"></div>
             <div class="name-cell">
                 <div class="file-icon ${iconSpecialClass}">
-                    ${iconSpecialClass === 'image-icon' ? `<img class="file-thumb" src="/api/files/${file.id}/thumbnail/icon" loading="lazy" alt="" onerror="this.style.display='none'">` : ''}
+                    ${iconSpecialClass === 'image-icon' ? `<img class="file-thumb" src="/api/files/${file.id}/thumbnail/icon" loading="lazy" alt="">` : ''}
                     <i class="${iconClass}"></i>
                 </div>
                 <span>${escapeHtml(file.name)}</span>
@@ -1191,6 +1193,8 @@ const ui = {
             <div class="size-cell">${fileSize}</div>
             <div class="date-cell">${formattedDate}</div>
         `;
+        var thumb = el.querySelector('.file-thumb');
+        if (thumb) thumb.addEventListener('error', function() { this.style.display = 'none'; });
         return el;
     },
 
diff --git a/static/js/app/userMenu.js b/static/js/app/userMenu.js
index 5d2fa7b2..86d0e6ab 100755
--- a/static/js/app/userMenu.js
+++ b/static/js/app/userMenu.js
@@ -182,32 +182,35 @@ function showUserProfileModal() {
     overlay.id = 'profile-modal-overlay';
     overlay.className = 'about-modal-overlay';
     overlay.innerHTML = `
-        <div class="about-modal" style="max-width:380px">
-            <div style="text-align:center;padding:20px 20px 0">
-                <div style="width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,#3b82f6,#6366f1);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;margin-bottom:12px">${initials}</div>
-                <h3 style="margin:0;font-size:18px;color:#1a1a2e">${username}</h3>
-                <p style="margin:4px 0 0;font-size:13px;color:#64748b">${email}</p>
-                <span style="display:inline-block;margin-top:8px;padding:2px 10px;border-radius:10px;font-size:11px;font-weight:600;${
-                    role === 'admin'
-                        ? 'background:#dbeafe;color:#1d4ed8'
-                        : 'background:#f1f5f9;color:#64748b'
-                }">${role === 'admin' ? '🛡️ Admin' : '👤 ' + t('user_menu.role_user', 'User')}</span>
+        <div class="about-modal about-modal-body">
+            <div class="about-modal-header">
+                <div class="about-modal-avatar">${initials}</div>
+                <h3 class="about-modal-username">${username}</h3>
+                <p class="about-modal-email">${email}</p>
+                <span class="about-modal-role ${role === 'admin' ? 'about-modal-role-admin' : 'about-modal-role-user'}">${role === 'admin' ? '🛡️ Admin' : '👤 ' + t('user_menu.role_user', 'User')}</span>
             </div>
-            <div style="padding:16px 20px">
-                <div style="font-size:12px;color:#64748b;text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px">
-                    <i class="fas fa-database" style="margin-right:4px"></i>${t('storage.title', 'Storage')}
+            <div class="about-modal-storage">
+                <div class="about-modal-storage-label">
+                    <i class="fas fa-database"></i>${t('storage.title', 'Storage')}
                 </div>
-                <div style="background:#f1f5f9;border-radius:6px;height:8px;overflow:hidden;margin-bottom:4px">
-                    <div style="height:100%;width:${percentage}%;background:${barColor};border-radius:6px;transition:width .3s"></div>
+                <div class="about-modal-bar-bg">
+                    <div class="about-modal-bar-fill" id="about-bar-fill"></div>
                 </div>
-                <div style="font-size:12px;color:#64748b;text-align:right">${percentage}% · ${window.formatFileSize(usedBytes)} / ${window.formatQuotaSize(quotaBytes)}</div>
+                <div class="about-modal-bar-text">${percentage}% · ${window.formatFileSize(usedBytes)} / ${window.formatQuotaSize(quotaBytes)}</div>
             </div>
-            <div style="padding:0 20px 16px;display:flex;justify-content:center">
-                <button id="profile-modal-close" style="padding:8px 24px;border:1px solid #e2e8f0;border-radius:8px;background:#fff;color:#334155;font-size:13px;font-weight:600;cursor:pointer;transition:background .15s">${t('actions.close', 'Close')}</button>
+            <div class="about-modal-footer">
+                <button id="profile-modal-close" class="about-modal-close-btn">${t('actions.close', 'Close')}</button>
             </div>
         </div>
     `;
 
+    // Set dynamic bar width and color via JS property (CSP-safe)
+    const barFill = overlay.querySelector('#about-bar-fill');
+    if (barFill) {
+        barFill.style.width = percentage + '%';
+        barFill.style.background = barColor;
+    }
+
     document.body.appendChild(overlay);
     requestAnimationFrame(() => overlay.classList.add('show'));
 
diff --git a/static/js/core/icons.js b/static/js/core/icons.js
index 8d76ac3d..7ed8bcbb 100755
--- a/static/js/core/icons.js
+++ b/static/js/core/icons.js
@@ -101,33 +101,7 @@ const _ICONS = {
   "vial": [512, "M342.6 9.4c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3l9.4 9.4L28.1 342.6C10.1 360.6 0 385 0 410.5L0 416c0 53 43 96 96 96l5.5 0c25.5 0 49.9-10.1 67.9-28.1L448 205.3l9.4 9.4c12.5 12.5 32.8 12.5 45.3 0s12.5-32.8 0-45.3l-32-32-96-96-32-32zM205.3 256L352 109.3 402.7 160l-96 96-101.5 0z"],
 };
 
-// ── CSS injection ──────────────────────────────────────────────
-// Injects minimal CSS for SVG icons (replaces ~80 KB of FA CSS).
-
-(function injectIconCSS() {
-  if (document.getElementById("oxi-icon-css")) return;
-  const style = document.createElement("style");
-  style.id = "oxi-icon-css";
-  style.textContent = `
-.oxi-icon {
-  display: inline-block;
-  width: 1em;
-  height: 1em;
-  vertical-align: -0.125em;
-  fill: currentColor;
-  overflow: hidden;
-  flex-shrink: 0;
-}
-.oxi-icon-spin {
-  animation: oxi-spin 1s linear infinite;
-}
-@keyframes oxi-spin {
-  from { transform: rotate(0deg); }
-  to   { transform: rotate(360deg); }
-}
-`;
-  document.head.appendChild(style);
-})();
+// Icon CSS is now in /css/components/icons.css (loaded via main.css).
 
 // ── Public API ─────────────────────────────────────────────────
 
diff --git a/static/js/core/notifications.js b/static/js/core/notifications.js
index efad7cc5..afefd2e8 100755
--- a/static/js/core/notifications.js
+++ b/static/js/core/notifications.js
@@ -153,7 +153,7 @@ const notifications = (() => {
             <div class="notif-item-icon upload"><i class="fas fa-cloud-upload-alt"></i></div>
             <div class="notif-item-body">
                 <div class="notif-item-title">${uploadingText}</div>
-                <div class="notif-upload-current" id="${batchId}-current" style="font-size:11px;color:#64748b;margin:3px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;"></div>
+                <div class="notif-upload-current" id="${batchId}-current"></div>
                 <div class="notif-upload-progress">
                     <div class="notif-upload-bar"><div class="notif-upload-fill" id="${batchId}-fill"></div></div>
                     <div class="notif-upload-detail">
diff --git a/static/js/features/files/contextMenus.js b/static/js/features/files/contextMenus.js
index efb436ce..095c0e68 100755
--- a/static/js/features/files/contextMenus.js
+++ b/static/js/features/files/contextMenus.js
@@ -31,8 +31,8 @@ const contextMenus = {
             window.wopiEditor &&
             await window.wopiEditor.canEdit(targetFile.name);
 
-        wopiEdit.style.display = show ? '' : 'none';
-        wopiEditTab.style.display = show ? '' : 'none';
+        wopiEdit.classList.toggle('hidden', !show);
+        wopiEditTab.classList.toggle('hidden', !show);
     },
 
     syncFavoriteOptionLabels() {
@@ -524,7 +524,7 @@ const contextMenus = {
         const titleText = mode === 'file' ?
             (window.i18n ? window.i18n.t('dialogs.move_file') : 'Move file') :
             (window.i18n ? window.i18n.t('dialogs.move_folder') : 'Move folder');
-        dialogHeader.innerHTML = `<i class="fas fa-arrows-alt" style="color:#ff5e3a"></i> <span>${titleText}</span>`;
+        dialogHeader.innerHTML = `<i class="fas fa-arrows-alt dialog-header-icon"></i> <span>${titleText}</span>`;
 
         // Load folders for the starting location
         await this.loadMoveDialogFolders(startFolderId);
@@ -639,7 +639,7 @@ const contextMenus = {
                 const currentFolderOption = document.createElement('div');
                 currentFolderOption.className = 'folder-select-item folder-select-current';
                 currentFolderOption.innerHTML = `
-                    <i class="fas fa-check-circle" style="color: #48bb78;"></i>
+                    <i class="fas fa-check-circle check-icon"></i>
                     <span>${window.i18n ? window.i18n.t('dialogs.select_this_folder') : 'Select this folder'}</span>
                 `;
                 currentFolderOption.addEventListener('click', () => {
@@ -718,7 +718,7 @@ const contextMenus = {
                 const homeOption = document.createElement('div');
                 homeOption.className = 'folder-select-item folder-select-current';
                 homeOption.innerHTML = `
-                    <i class="fas fa-check-circle" style="color: #48bb78;"></i>
+                    <i class="fas fa-check-circle check-icon"></i>
                     <span>${window.i18n ? window.i18n.t('dialogs.move_to_home') : 'Move to Home folder'}</span>
                 `;
                 homeOption.addEventListener('click', () => {
@@ -889,7 +889,7 @@ const contextMenus = {
         existingSharesContainer.innerHTML = '';
 
         if (existingShares.length > 0) {
-            document.getElementById('existing-shares-section').style.display = 'block';
+            document.getElementById('existing-shares-section').classList.remove('hidden');
 
             // Create elements for each existing share
             existingShares.forEach(share => {
@@ -965,19 +965,19 @@ const contextMenus = {
                             await window.fileSharing.removeSharedLink(shareId);
                             btn.closest('.existing-share-item').remove();
                             if (existingSharesContainer.children.length === 0) {
-                                document.getElementById('existing-shares-section').style.display = 'none';
+                                document.getElementById('existing-shares-section').classList.add('hidden');
                             }
                         }
                     });
                 });
             });
         } else {
-            document.getElementById('existing-shares-section').style.display = 'none';
+            document.getElementById('existing-shares-section').classList.add('hidden');
         }
 
         // Hide new-share section from previous use
         const newShareSection = document.getElementById('new-share-section');
-        if (newShareSection) newShareSection.style.display = 'none';
+        if (newShareSection) newShareSection.classList.add('hidden');
 
         // Show dialog
         shareDialog.style.display = 'flex';
@@ -1041,7 +1041,7 @@ const contextMenus = {
             const shareUrl = document.getElementById('generated-share-url');
             if (shareUrl) {
                 shareUrl.value = shareInfo.url;
-                document.getElementById('new-share-section').style.display = 'block';
+                document.getElementById('new-share-section').classList.remove('hidden');
                 shareUrl.focus();
                 shareUrl.select();
             }
diff --git a/static/js/features/files/multiSelect.js b/static/js/features/files/multiSelect.js
index 3a377c59..e9cd54d3 100755
--- a/static/js/features/files/multiSelect.js
+++ b/static/js/features/files/multiSelect.js
@@ -401,7 +401,7 @@ const multiSelect = {
         const n = items.length;
         const titleText = this._t('batch.move_title', { count: n })
             || `Move ${n} item${n !== 1 ? 's' : ''}`;
-        dialogHeader.innerHTML = `<i class="fas fa-arrows-alt" style="color:#ff5e3a"></i> <span>${titleText}</span>`;
+        dialogHeader.innerHTML = `<i class="fas fa-arrows-alt dialog-header-icon"></i> <span>${titleText}</span>`;
 
         const excludeIds = items.filter(i => i.type === 'folder').map(i => i.id);
         await contextMenus.loadAllFolders(excludeIds[0] || null, 'batch');
diff --git a/static/js/features/files/search.js b/static/js/features/files/search.js
index 2ddbacca..b3f3bb9f 100755
--- a/static/js/features/files/search.js
+++ b/static/js/features/files/search.js
@@ -175,8 +175,8 @@ const search = {
             const emptyState = document.createElement('div');
             emptyState.className = 'empty-state';
             emptyState.innerHTML = `
-                <i class="fas fa-search" style="font-size: 48px; color: var(--empty-icon, #ccc); margin-bottom: 16px;"></i>
-                <p style="color: var(--text-secondary, #64748b);">No results found for this search</p>
+                <i class="fas fa-search empty-state-icon"></i>
+                <p class="search-empty-text">No results found for this search</p>
             `;
             filesGrid.appendChild(emptyState);
             return;
diff --git a/static/js/features/files/wopiEditor.js b/static/js/features/files/wopiEditor.js
index d0ee83cc..3fd8eb59 100755
--- a/static/js/features/files/wopiEditor.js
+++ b/static/js/features/files/wopiEditor.js
@@ -120,7 +120,7 @@ class WopiEditor {
         var spinner = document.createElement('div');
         spinner.id = 'wopi-loading-spinner';
         spinner.style.cssText = 'position:absolute;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;background:#f5f5f5;z-index:1;';
-        spinner.innerHTML = '<i class="fas fa-spinner fa-spin" style="font-size:48px;color:#666;"></i>';
+        spinner.innerHTML = '<i class="fas fa-spinner fa-spin empty-state-icon spinner"></i>';
         frameHolder.appendChild(spinner);
 
         var iframe = document.createElement('iframe');
diff --git a/static/js/features/library/favorites.js b/static/js/features/library/favorites.js
index 6dec12d8..b4ff5972 100755
--- a/static/js/features/library/favorites.js
+++ b/static/js/features/library/favorites.js
@@ -187,7 +187,7 @@ const favorites = {
                 const emptyState = document.createElement('div');
                 emptyState.className = 'empty-state';
                 emptyState.innerHTML = `
-                    <i class="fas fa-star" style="font-size: 48px; color: #ddd; margin-bottom: 16px;"></i>
+                    <i class="fas fa-star empty-state-icon"></i>
                     <p>${window.i18n ? window.i18n.t('favorites.empty_state') : 'No favorite items'}</p>
                     <p>${window.i18n ? window.i18n.t('favorites.empty_hint') : 'To mark as favorite, right-click on any file or folder'}</p>
                 `;
diff --git a/static/js/features/library/recent.js b/static/js/features/library/recent.js
index c312e027..46b1f94e 100755
--- a/static/js/features/library/recent.js
+++ b/static/js/features/library/recent.js
@@ -106,7 +106,7 @@ const recent = {
                 const emptyState = document.createElement('div');
                 emptyState.className = 'empty-state';
                 emptyState.innerHTML = `
-                    <i class="fas fa-clock" style="font-size: 48px; color: #ddd; margin-bottom: 16px;"></i>
+                    <i class="fas fa-clock empty-state-icon"></i>
                     <p>${window.i18n ? window.i18n.t('recent.empty_state') : 'No recent files'}</p>
                     <p>${window.i18n ? window.i18n.t('recent.empty_hint') : 'Files you open will appear here'}</p>
                 `;
diff --git a/static/js/views/admin/admin.js b/static/js/views/admin/admin.js
index 677e299a..2db6b3e5 100755
--- a/static/js/views/admin/admin.js
+++ b/static/js/views/admin/admin.js
@@ -124,17 +124,35 @@ async function loadUsers() {
         '<td><span class="badge badge-' + escapeHtml(u.role) + '">' + (u.role === 'admin' ? '<i class="fas fa-shield-alt badge-admin-icon-small"></i> ' : '') + escapeHtml(u.role) + '</span></td>' +
         '<td>' + authBadge + '</td>' +
         '<td><span class="badge badge-' + (u.active ? 'active' : 'inactive') + '">' + (u.active ? 'Active' : 'Inactive') + '</span></td>' +
-        '<td><div class="quota-bar"><div class="progress-bar quota-progress-fixed"><div class="progress-fill ' + quotaColor + '" style="width:' + Math.min(quotaPct, 100) + '%"></div></div><span class="quota-text">' + quotaText + '</span></div></td>' +
+        '<td><div class="quota-bar"><div class="progress-bar quota-progress-fixed"><div class="progress-fill ' + quotaColor + '" data-width="' + Math.min(quotaPct, 100) + '"></div></div><span class="quota-text">' + quotaText + '</span></div></td>' +
         '<td class="user-last-login-cell">' + timeAgo(u.last_login_at) + '</td>' +
         '<td><div class="actions-row">' +
-          '<button class="btn btn-sm btn-secondary" onclick="openQuotaModal(\'' + _escJs(u.id) + '\',\'' + _escJs(u.username) + '\',' + u.storage_quota_bytes + ')" title="Edit quota"><i class="fas fa-box"></i></button>' +
-          (isOidc ? '' : '<button class="btn btn-sm btn-secondary" onclick="openResetPasswordModal(\'' + _escJs(u.id) + '\',\'' + _escJs(u.username) + '\')" title="Reset password"><i class="fas fa-key"></i></button>') +
-          '<button class="btn btn-sm btn-secondary" onclick="toggleRole(\'' + _escJs(u.id) + '\',\'' + _escJs(u.role) + '\')" title="Toggle role"' + (isSelf ? ' disabled' : '') + '><i class="fas fa-' + (u.role === 'admin' ? 'user' : 'crown') + '"></i></button>' +
-          '<button class="btn btn-sm ' + (u.active ? 'btn-danger' : 'btn-success') + '" onclick="toggleActive(\'' + _escJs(u.id) + '\',' + u.active + ')" title="' + (u.active ? 'Deactivate' : 'Activate') + '"' + (isSelf && u.active ? ' disabled' : '') + '><i class="fas fa-' + (u.active ? 'ban' : 'check') + '"></i></button>' +
-          '<button class="btn btn-sm btn-danger" onclick="deleteUser(\'' + _escJs(u.id) + '\',\'' + _escJs(u.username) + '\')" title="Delete"' + (isSelf ? ' disabled' : '') + '><i class="fas fa-trash-alt"></i></button>' +
+          '<button class="btn btn-sm btn-secondary admin-action-btn" data-action="quota" data-uid="' + _escJs(u.id) + '" data-uname="' + _escJs(u.username) + '" data-quota="' + u.storage_quota_bytes + '" title="Edit quota"><i class="fas fa-box"></i></button>' +
+          (isOidc ? '' : '<button class="btn btn-sm btn-secondary admin-action-btn" data-action="reset-pw" data-uid="' + _escJs(u.id) + '" data-uname="' + _escJs(u.username) + '" title="Reset password"><i class="fas fa-key"></i></button>') +
+          '<button class="btn btn-sm btn-secondary admin-action-btn" data-action="toggle-role" data-uid="' + _escJs(u.id) + '" data-role="' + _escJs(u.role) + '" title="Toggle role"' + (isSelf ? ' disabled' : '') + '><i class="fas fa-' + (u.role === 'admin' ? 'user' : 'crown') + '"></i></button>' +
+          '<button class="btn btn-sm ' + (u.active ? 'btn-danger' : 'btn-success') + ' admin-action-btn" data-action="toggle-active" data-uid="' + _escJs(u.id) + '" data-active="' + u.active + '" title="' + (u.active ? 'Deactivate' : 'Activate') + '"' + (isSelf && u.active ? ' disabled' : '') + '><i class="fas fa-' + (u.active ? 'ban' : 'check') + '"></i></button>' +
+          '<button class="btn btn-sm btn-danger admin-action-btn" data-action="delete" data-uid="' + _escJs(u.id) + '" data-uname="' + _escJs(u.username) + '" title="Delete"' + (isSelf ? ' disabled' : '') + '><i class="fas fa-trash-alt"></i></button>' +
         '</div></td></tr>';
     }).join('');
 
+    // Set dynamic progress bar widths (CSP-safe via JS property)
+    document.querySelectorAll('.progress-fill[data-width]').forEach(function(el) {
+      el.style.width = el.dataset.width + '%';
+      el.removeAttribute('data-width');
+    });
+
+    // Wire up admin action buttons (replaces inline onclick handlers)
+    document.querySelectorAll('.admin-action-btn').forEach(function(btn) {
+      btn.addEventListener('click', function() {
+        var action = btn.dataset.action;
+        if (action === 'quota') openQuotaModal(btn.dataset.uid, btn.dataset.uname, Number(btn.dataset.quota));
+        else if (action === 'reset-pw') openResetPasswordModal(btn.dataset.uid, btn.dataset.uname);
+        else if (action === 'toggle-role') toggleRole(btn.dataset.uid, btn.dataset.role);
+        else if (action === 'toggle-active') toggleActive(btn.dataset.uid, btn.dataset.active === 'true');
+        else if (action === 'delete') deleteUser(btn.dataset.uid, btn.dataset.uname);
+      });
+    });
+
     document.getElementById('users-info').textContent = 'Showing ' + (usersPage * PAGE_SIZE + 1) + '-' + Math.min((usersPage + 1) * PAGE_SIZE, totalUsers) + ' of ' + totalUsers;
     document.getElementById('prev-btn').disabled = usersPage === 0;
     document.getElementById('next-btn').disabled = (usersPage + 1) * PAGE_SIZE >= totalUsers;
diff --git a/static/js/views/nextcloud/error.js b/static/js/views/nextcloud/error.js
new file mode 100644
index 00000000..6140322d
--- /dev/null
+++ b/static/js/views/nextcloud/error.js
@@ -0,0 +1,33 @@
+// Read error type from URL query parameter
+var params = new URLSearchParams(window.location.search);
+var errorType = params.get('type') || 'generic';
+
+var errorTitle = document.getElementById('error-title');
+var errorMessage = document.getElementById('error-message');
+var errorAction = document.getElementById('error-action');
+
+switch(errorType) {
+    case 'invalid-credentials':
+        errorTitle.textContent = 'Login Failed';
+        errorMessage.textContent = 'Invalid username or password. Please check your credentials and try again.';
+        errorAction.textContent = 'Try Again';
+        errorAction.addEventListener('click', function() { history.back(); });
+        break;
+    case 'session-expired':
+        errorTitle.textContent = 'Session Expired';
+        errorMessage.textContent = 'Your session has expired. Please try again.';
+        errorAction.textContent = 'Close Window';
+        errorAction.addEventListener('click', function() { window.close(); });
+        break;
+    case 'not-found':
+        errorTitle.textContent = 'Not Found';
+        errorMessage.textContent = 'The requested page was not found.';
+        errorAction.textContent = 'Close Window';
+        errorAction.addEventListener('click', function() { window.close(); });
+        break;
+    default:
+        errorTitle.textContent = 'Error';
+        errorMessage.textContent = 'An unexpected error occurred. Please try again.';
+        errorAction.textContent = 'Close Window';
+        errorAction.addEventListener('click', function() { window.close(); });
+}
diff --git a/static/js/views/nextcloud/login.js b/static/js/views/nextcloud/login.js
new file mode 100644
index 00000000..388c4311
--- /dev/null
+++ b/static/js/views/nextcloud/login.js
@@ -0,0 +1,38 @@
+// Extract token from URL path and set form action
+var pathParts = window.location.pathname.split('/');
+var token = pathParts[pathParts.length - 1];
+// Validate token is hex-only to prevent injection
+if (!/^[0-9a-fA-F]+$/.test(token)) {
+    document.body.innerHTML = '<p>Invalid session token.</p>';
+    throw new Error('Invalid token format');
+}
+document.getElementById('login-flow-form').action = '/login/v2/flow/' + token;
+
+// Check if OIDC is available and configure SSO button
+(async function() {
+    try {
+        var resp = await fetch('/api/auth/oidc/providers');
+        if (!resp.ok) return;
+        var info = await resp.json();
+        if (!info.enabled) return;
+
+        // Show OIDC section
+        document.getElementById('oidc-section').classList.remove('hidden');
+
+        // Update button text with provider name
+        var btn = document.getElementById('oidc-button');
+        btn.textContent = 'Sign in with ' + (info.provider_name || 'SSO');
+
+        // If password login is disabled, hide the password form
+        if (!info.password_login_enabled) {
+            document.getElementById('login-flow-form').style.display = 'none';
+        }
+
+        // SSO button redirects to the OIDC flow for this NC token
+        btn.addEventListener('click', function() {
+            window.location.href = '/login/v2/flow/' + token + '/oidc';
+        });
+    } catch(e) {
+        // OIDC not available — silently keep password-only mode
+    }
+})();
diff --git a/static/js/views/nextcloud/success.js b/static/js/views/nextcloud/success.js
new file mode 100644
index 00000000..850907a9
--- /dev/null
+++ b/static/js/views/nextcloud/success.js
@@ -0,0 +1,7 @@
+document.getElementById('close-window-btn').addEventListener('click', function() {
+    window.close();
+});
+// Auto-close after 3 seconds
+setTimeout(function() {
+    window.close();
+}, 3000);
diff --git a/static/js/views/profile/profile.js b/static/js/views/profile/profile.js
index 15d61b22..06ff026b 100755
--- a/static/js/views/profile/profile.js
+++ b/static/js/views/profile/profile.js
@@ -62,7 +62,7 @@ async function init() {
     document.getElementById('p-storage-text').textContent = formatBytes(used) + ' / ' + (quota > 0 ? formatBytes(quota) : 'Unlimited');
 
     if (user.auth_provider && user.auth_provider !== 'local') {
-      document.getElementById('password-section').style.display = 'none';
+      document.getElementById('password-section').classList.add('hidden');
     }
 
     loadAppPasswords();
@@ -72,7 +72,7 @@ async function init() {
       if (oidcResp.ok) {
         const oidcInfo = await oidcResp.json();
         if (!oidcInfo.password_login_enabled) {
-          document.getElementById('password-section').style.display = 'none';
+          document.getElementById('password-section').classList.add('hidden');
         }
       }
     } catch (oidcErr) {
@@ -157,7 +157,7 @@ function renderPwRow(pw) {
   btn.className = 'btn btn-danger-sm';
   btn.innerHTML = '<i class="fas fa-trash"></i>';
   btn.title = 'Revoke';
-  btn.onclick = function () { revokeAppPassword(pw.id, pw.label); };
+  btn.addEventListener('click', function () { revokeAppPassword(pw.id, pw.label); });
   actions.appendChild(btn);
   tr.append(label, created, lastUsed, actions);
   return tr;
@@ -167,7 +167,7 @@ async function loadAppPasswords() {
   try {
     const resp = await fetch(API + '/auth/app-passwords', { headers: headers() });
     if (!resp.ok) {
-      document.getElementById('app-passwords-section').style.display = 'none';
+      document.getElementById('app-passwords-section').classList.add('hidden');
       return;
     }
     const passwords = await resp.json();
@@ -180,20 +180,20 @@ async function loadAppPasswords() {
     const empty = document.getElementById('app-pw-empty');
     tbody.innerHTML = '';
     if (userPws.length === 0) {
-      table.style.display = 'none';
-      empty.style.display = 'block';
+      table.classList.add('hidden');
+      empty.classList.remove('hidden');
     } else {
-      table.style.display = '';
-      empty.style.display = 'none';
+      table.classList.remove('hidden');
+      empty.classList.add('hidden');
       for (const pw of userPws) tbody.appendChild(renderPwRow(pw));
     }
 
     // Auto-generated (client session) passwords
     const autoSection = document.getElementById('app-pw-auto-section');
     if (autoPws.length === 0) {
-      autoSection.style.display = 'none';
+      autoSection.classList.add('hidden');
     } else {
-      autoSection.style.display = '';
+      autoSection.classList.remove('hidden');
       document.getElementById('app-pw-auto-count').textContent = autoPws.length;
       const autoTbody = document.getElementById('app-pw-auto-tbody');
       autoTbody.innerHTML = '';
@@ -207,9 +207,9 @@ async function loadAppPasswords() {
 function toggleAutoPasswords() {
   const body = document.getElementById('app-pw-auto-body');
   const chevron = document.getElementById('app-pw-auto-chevron');
-  const open = body.style.display === 'none';
-  body.style.display = open ? '' : 'none';
-  chevron.className = open ? 'fas fa-chevron-down' : 'fas fa-chevron-right';
+  const isHidden = body.classList.contains('hidden');
+  body.classList.toggle('hidden', !isHidden);
+  chevron.className = isHidden ? 'fas fa-chevron-down' : 'fas fa-chevron-right';
 }
 
 async function createAppPassword() {
@@ -241,7 +241,7 @@ async function createAppPassword() {
     const result = await resp.json();
     document.getElementById('app-pw-created-label').textContent = result.label;
     document.getElementById('app-pw-created-password').textContent = result.password;
-    document.getElementById('app-pw-created').style.display = 'block';
+    document.getElementById('app-pw-created').classList.remove('hidden');
     labelInput.value = '';
     loadAppPasswords();
   } catch (err) {
@@ -255,7 +255,7 @@ async function createAppPassword() {
 function copyAppPassword() {
   const pw = document.getElementById('app-pw-created-password').textContent;
   navigator.clipboard.writeText(pw).then(function () {
-    const btn = document.querySelector('.btn-copy');
+    const btn = document.getElementById('app-pw-copy-btn');
     btn.innerHTML = '<i class="fas fa-check"></i>';
     setTimeout(function () { btn.innerHTML = '<i class="fas fa-copy"></i>'; }, 1500);
   });
@@ -269,7 +269,7 @@ async function revokeAppPassword(id, label) {
       headers: headers()
     });
     if (resp.ok || resp.status === 204) {
-      document.getElementById('app-pw-created').style.display = 'none';
+      document.getElementById('app-pw-created').classList.add('hidden');
       loadAppPasswords();
     } else {
       const err = await resp.json().catch(() => ({}));
@@ -280,7 +280,16 @@ async function revokeAppPassword(id, label) {
   }
 }
 
+function escapeHtml(str) {
+  var div = document.createElement('div');
+  div.textContent = str || '';
+  return div.innerHTML;
+}
+
 init();
 
-/* Wire up form handler (replaces inline onsubmit) */
+/* Wire up event handlers (replaces inline onclick/onsubmit) */
 document.getElementById('password-form').addEventListener('submit', changePassword);
+document.getElementById('app-pw-generate').addEventListener('click', createAppPassword);
+document.getElementById('app-pw-copy-btn').addEventListener('click', copyAppPassword);
+document.getElementById('app-pw-auto-toggle').addEventListener('click', toggleAutoPasswords);
diff --git a/static/js/views/shared/sharedView.js b/static/js/views/shared/sharedView.js
index 2d28e6ee..0cfa5b49 100755
--- a/static/js/views/shared/sharedView.js
+++ b/static/js/views/shared/sharedView.js
@@ -92,14 +92,14 @@ const sharedView = {
                 </div>
             </div>
 
-            <div id="empty-shared-state" class="empty-state" style="display:none;">
-                <i class="fas fa-share-alt" style="font-size: 48px; color: #ddd; margin-bottom: 16px;"></i>
+            <div id="empty-shared-state" class="empty-state hidden">
+                <i class="fas fa-share-alt empty-state-icon"></i>
                 <p data-i18n="shared_emptyStateTitle">No shared items</p>
                 <p data-i18n="shared_emptyStateDesc">Items you share will appear here</p>
                 <button id="go-to-files-btn" class="button primary" data-i18n="shared.goToFiles">Go to Files</button>
             </div>
 
-            <div class="shared-list-container" style="display:none;">
+            <div class="shared-list-container hidden">
                 <table class="shared-table">
                     <thead>
                         <tr>
diff --git a/static/nextcloud-error.html b/static/nextcloud-error.html
index 5c06da70..5b7fc48a 100644
--- a/static/nextcloud-error.html
+++ b/static/nextcloud-error.html
@@ -25,46 +25,12 @@
                 <span id="error-message">An error occurred. Please try again.</span>
             </div>
             
-            <div style="margin-top: 20px;">
+            <div class="auth-action-wrap">
                 <button type="button" class="auth-button" id="error-action">Try Again</button>
             </div>
         </div>
     </div>
-    
-    <script>
-        // Read error type from URL query parameter
-        const params = new URLSearchParams(window.location.search);
-        const errorType = params.get('type') || 'generic';
-        
-        const errorTitle = document.getElementById('error-title');
-        const errorMessage = document.getElementById('error-message');
-        const errorAction = document.getElementById('error-action');
-        
-        switch(errorType) {
-            case 'invalid-credentials':
-                errorTitle.textContent = 'Login Failed';
-                errorMessage.textContent = 'Invalid username or password. Please check your credentials and try again.';
-                errorAction.textContent = 'Try Again';
-                errorAction.onclick = () => history.back();
-                break;
-            case 'session-expired':
-                errorTitle.textContent = 'Session Expired';
-                errorMessage.textContent = 'Your session has expired. Please try again.';
-                errorAction.textContent = 'Close Window';
-                errorAction.onclick = () => window.close();
-                break;
-            case 'not-found':
-                errorTitle.textContent = 'Not Found';
-                errorMessage.textContent = 'The requested page was not found.';
-                errorAction.textContent = 'Close Window';
-                errorAction.onclick = () => window.close();
-                break;
-            default:
-                errorTitle.textContent = 'Error';
-                errorMessage.textContent = 'An unexpected error occurred. Please try again.';
-                errorAction.textContent = 'Close Window';
-                errorAction.onclick = () => window.close();
-        }
-    </script>
+
+    <script src="/js/views/nextcloud/error.js"></script>
 </body>
 </html>
diff --git a/static/nextcloud-login.html b/static/nextcloud-login.html
index b9c2e416..a0af9ea7 100644
--- a/static/nextcloud-login.html
+++ b/static/nextcloud-login.html
@@ -20,7 +20,7 @@
             </div>
             
             <h2 class="auth-title">Grant Access</h2>
-            <p style="margin-bottom: 20px; color: #6b7280; font-size: 14px;">
+            <p class="auth-subtitle">
                 A Nextcloud client is requesting access to your account.
             </p>
             
@@ -56,59 +56,15 @@
             </form>
 
             <!-- OIDC/SSO login — shown only when OIDC is enabled -->
-            <div id="oidc-section" style="display: none;">
-                <div style="display: flex; align-items: center; gap: 12px; margin: 16px 0;">
-                    <hr style="flex: 1; border: none; border-top: 1px solid #e5e7eb;">
-                    <span style="color: #9ca3af; font-size: 13px;">or</span>
-                    <hr style="flex: 1; border: none; border-top: 1px solid #e5e7eb;">
-                </div>
-                <button type="button" id="oidc-button" class="auth-button" style="background: #4f46e5;">
+            <div id="oidc-section" class="hidden">
+                <div class="auth-divider"><span>or</span></div>
+                <button type="button" id="oidc-button" class="auth-button auth-button-sso">
                     Sign in with SSO
                 </button>
             </div>
         </div>
     </div>
     
-    <script>
-        // Extract token from URL path and set form action
-        const pathParts = window.location.pathname.split('/');
-        const token = pathParts[pathParts.length - 1];
-        // Validate token is hex-only to prevent injection
-        if (!/^[0-9a-fA-F]+$/.test(token)) {
-            document.body.innerHTML = '<p>Invalid session token.</p>';
-            throw new Error('Invalid token format');
-        }
-        document.getElementById('login-flow-form').action = `/login/v2/flow/${token}`;
-
-        // Check if OIDC is available and configure SSO button
-        (async function() {
-            try {
-                const resp = await fetch('/api/auth/oidc/providers');
-                if (!resp.ok) return;
-                const info = await resp.json();
-                if (!info.enabled) return;
-
-                // Show OIDC section
-                const section = document.getElementById('oidc-section');
-                section.style.display = 'block';
-
-                // Update button text with provider name
-                const btn = document.getElementById('oidc-button');
-                btn.textContent = `Sign in with ${info.provider_name || 'SSO'}`;
-
-                // If password login is disabled, hide the password form
-                if (!info.password_login_enabled) {
-                    document.getElementById('login-flow-form').style.display = 'none';
-                }
-
-                // SSO button redirects to the OIDC flow for this NC token
-                btn.addEventListener('click', () => {
-                    window.location.href = `/login/v2/flow/${token}/oidc`;
-                });
-            } catch(e) {
-                // OIDC not available — silently keep password-only mode
-            }
-        })();
-    </script>
+    <script src="/js/views/nextcloud/login.js"></script>
 </body>
 </html>
diff --git a/static/nextcloud-success.html b/static/nextcloud-success.html
index 448d8105..83fcb98f 100644
--- a/static/nextcloud-success.html
+++ b/static/nextcloud-success.html
@@ -25,21 +25,16 @@
                 <span>You have successfully granted access to your account.</span>
             </div>
             
-            <p style="margin-top: 20px; color: #6b7280; font-size: 14px;">
+            <p class="auth-subtitle">
                 You can now close this window and return to your Nextcloud app.
             </p>
-            
-            <div style="margin-top: 20px;">
-                <button type="button" class="auth-button" onclick="window.close()">Close Window</button>
+
+            <div class="auth-action-wrap">
+                <button type="button" class="auth-button" id="close-window-btn">Close Window</button>
             </div>
         </div>
     </div>
-    
-    <script>
-        // Auto-close after 3 seconds
-        setTimeout(() => {
-            window.close();
-        }, 3000);
-    </script>
+
+    <script src="/js/views/nextcloud/success.js"></script>
 </body>
 </html>
diff --git a/static/profile.html b/static/profile.html
index 791df50c..30f58e33 100755
--- a/static/profile.html
+++ b/static/profile.html
@@ -100,14 +100,14 @@
 
       <div class="app-pw-create">
         <input type="text" id="app-pw-label" placeholder="Label (e.g. Thunderbird, macOS)" maxlength="128">
-        <button class="btn btn-primary" id="app-pw-generate" onclick="createAppPassword()"><i class="fas fa-plus"></i> Generate</button>
+        <button class="btn btn-primary" id="app-pw-generate"><i class="fas fa-plus"></i> Generate</button>
       </div>
 
-      <div id="app-pw-created" class="app-pw-created" style="display:none">
+      <div id="app-pw-created" class="app-pw-created hidden">
         <div class="app-pw-created-label">New password for <strong id="app-pw-created-label"></strong>:</div>
         <div class="app-pw-created-value">
           <code id="app-pw-created-password"></code>
-          <button class="btn btn-copy" onclick="copyAppPassword()" title="Copy to clipboard"><i class="fas fa-copy"></i></button>
+          <button class="btn btn-copy" id="app-pw-copy-btn" title="Copy to clipboard"><i class="fas fa-copy"></i></button>
         </div>
         <small>Copy this password now. You won't be able to see it again.</small>
       </div>
@@ -120,15 +120,15 @@
         </thead>
         <tbody id="app-pw-tbody"></tbody>
       </table>
-      <div id="app-pw-empty" class="app-pw-empty" style="display:none">No app passwords yet.</div>
+      <div id="app-pw-empty" class="app-pw-empty hidden">No app passwords yet.</div>
 
-      <div id="app-pw-auto-section" class="app-pw-auto-section" style="display:none">
-        <button class="app-pw-auto-toggle" id="app-pw-auto-toggle" onclick="toggleAutoPasswords()">
+      <div id="app-pw-auto-section" class="app-pw-auto-section hidden">
+        <button class="app-pw-auto-toggle" id="app-pw-auto-toggle">
           <i class="fas fa-chevron-right" id="app-pw-auto-chevron"></i>
           <span>Client sessions</span>
           <span class="app-pw-auto-count" id="app-pw-auto-count">0</span>
         </button>
-        <div id="app-pw-auto-body" style="display:none">
+        <div id="app-pw-auto-body" class="hidden">
           <p class="app-pw-auto-desc">Auto-generated when you connect a Nextcloud-compatible client.</p>
           <table class="app-pw-table" id="app-pw-auto-table">
             <thead>