diff --git a/app/static/css/app.css b/app/static/css/app.css
index 5207732..82c99e1 100644
--- a/app/static/css/app.css
+++ b/app/static/css/app.css
@@ -440,6 +440,823 @@ ul {
   height: 100%;
 }
 
+/* ── Vault main ──────────────────────────────────────────────────── */
+.vault-main {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  background: var(--color-bg);
+}
+
+#view-vault,
+#view-security {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  overflow: hidden;
+  min-height: 0;
+  position: relative;
+}
+
+#view-vault.hidden,
+#view-security.hidden {
+  display: none;
+}
+
+.vault-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 16px 24px;
+  background: var(--color-surface);
+  border-bottom: 1px solid var(--color-border);
+  gap: 16px;
+  flex-shrink: 0;
+}
+
+.vault-header-inner {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  width: 100%;
+  gap: 16px;
+}
+
+.vault-title {
+  font-size: 18px;
+  font-weight: 600;
+  white-space: nowrap;
+}
+
+.vault-toolbar {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  flex: 1;
+  justify-content: flex-end;
+}
+
+.search-wrapper {
+  display: flex;
+  align-items: center;
+  background: var(--color-bg);
+  border: 1px solid var(--color-border);
+  border-radius: 20px;
+  padding: 6px 14px;
+  gap: 8px;
+  flex: 1;
+  max-width: 360px;
+}
+
+.search-icon {
+  color: var(--color-text-muted);
+}
+
+#search-input {
+  border: none;
+  background: none;
+  outline: none;
+  flex: 1;
+  font-size: 14px;
+}
+
+/* ── Sort control ────────────────────────────────────────────────── */
+.sort-wrapper select {
+  padding: 6px 10px;
+  border: 1px solid var(--color-border);
+  border-radius: 20px;
+  background: var(--color-bg);
+  color: var(--color-text);
+  font-size: 13px;
+  cursor: pointer;
+  outline: none;
+}
+
+.sort-wrapper select:focus {
+  border-color: var(--color-primary);
+}
+
+.btn-fab {
+  width: 40px;
+  height: 40px;
+  border-radius: 50%;
+  background: var(--color-primary);
+  color: #fff;
+  font-size: 24px;
+  font-weight: 300;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  box-shadow: 0 2px 8px rgba(208, 2, 27, 0.35);
+  transition: background var(--transition), box-shadow var(--transition);
+  flex-shrink: 0;
+}
+
+.btn-fab:hover {
+  background: var(--color-primary-dark);
+  box-shadow: 0 4px 14px rgba(208, 2, 27, 0.45);
+}
+
+/* ── Vault list ──────────────────────────────────────────────────── */
+.vault-list {
+  flex: 1;
+  overflow-y: auto;
+  padding: 12px 24px 24px;
+}
+
+.vault-list-inner {
+  max-width: 900px;
+}
+
+.vault-group-header {
+  font-size: 12px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: var(--color-text-muted);
+  padding: 16px 0 6px;
+  border-bottom: 1px solid var(--color-border);
+  margin-bottom: 4px;
+}
+
+.vault-empty {
+  text-align: center;
+  color: var(--color-text-muted);
+  padding: 60px 0;
+  font-size: 15px;
+}
+
+.btn-icon {
+  width: 30px;
+  height: 30px;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 15px;
+  color: var(--color-text-muted);
+  transition: background var(--transition), color var(--transition);
+  flex-shrink: 0;
+}
+
+.btn-icon:hover {
+  background: var(--color-bg);
+  color: var(--color-text);
+}
+
+/* ── Spinner ─────────────────────────────────────────────────────── */
+.spinner-overlay {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: rgba(255, 255, 255, 0.7);
+  z-index: 10;
+}
+
+.spinner-overlay.hidden {
+  display: none;
+}
+
+.spinner {
+  width: 36px;
+  height: 36px;
+  border: 3px solid var(--color-border);
+  border-top-color: var(--color-primary);
+  border-radius: 50%;
+  animation: spin 0.7s linear infinite;
+}
+
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+/* ── Modal ───────────────────────────────────────────────────────── */
+.modal-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.45);
+  display: none;
+  align-items: center;
+  justify-content: center;
+  z-index: 100;
+  padding: 16px;
+}
+
+.modal-overlay.open {
+  display: flex;
+}
+
+.modal {
+  background: var(--color-surface);
+  border-radius: var(--radius);
+  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
+  width: 100%;
+  max-width: 480px;
+  max-height: 90vh;
+  overflow-y: auto;
+  padding: 28px;
+}
+
+.modal-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 20px;
+}
+
+.modal-header h3 {
+  font-size: 18px;
+  font-weight: 600;
+}
+
+.btn-close {
+  font-size: 18px;
+  color: var(--color-text-muted);
+  padding: 4px;
+  border-radius: 4px;
+}
+
+.btn-close:hover {
+  background: var(--color-bg);
+  color: var(--color-text);
+}
+
+.modal-actions {
+  display: flex;
+  gap: 10px;
+  justify-content: flex-end;
+  margin-top: 20px;
+}
+
+.required {
+  color: var(--color-primary);
+}
+
+/* ── Modal item (wider for address/card forms) ───────────────────── */
+.modal-item {
+  max-width: 540px;
+}
+
+/* ── Multi-column form rows ──────────────────────────────────────── */
+.form-row {
+  display: flex;
+  gap: 12px;
+}
+
+.form-row .form-group {
+  flex: 1;
+}
+
+/* ── Btn small ───────────────────────────────────────────────────── */
+.btn-sm {
+  padding: 5px 12px;
+  font-size: 12px;
+  border-radius: 6px;
+}
+
+/* ── Toast ───────────────────────────────────────────────────────── */
+.toast {
+  position: fixed;
+  bottom: 24px;
+  left: 50%;
+  transform: translateX(-50%) translateY(20px);
+  background: #1a1a2e;
+  color: #fff;
+  padding: 10px 20px;
+  border-radius: 20px;
+  font-size: 14px;
+  font-weight: 500;
+  opacity: 0;
+  transition: opacity 0.25s, transform 0.25s;
+  pointer-events: none;
+  z-index: 200;
+  white-space: nowrap;
+}
+
+.toast.show {
+  opacity: 1;
+  transform: translateX(-50%) translateY(0);
+}
+
+.toast.toast-error {
+  background: #c00;
+}
+
+/* ── Unlock overlay ──────────────────────────────────────────────── */
+.modal-unlock {
+  max-width: 380px;
+}
+
+.unlock-logo {
+  margin-bottom: 16px;
+}
+
+.unlock-title {
+  margin-bottom: 4px;
+}
+
+.unlock-subtitle {
+  color: var(--color-text-muted);
+  font-size: 13px;
+  margin-bottom: 20px;
+}
+
+.btn-link {
+  padding: 10px 20px;
+  border-radius: var(--radius);
+  text-decoration: none;
+}
+
+/* ── Auth step hint ─────────────────────────────────────────────── */
+.auth-step-hint {
+  color: var(--color-text-muted);
+  font-size: 13px;
+  margin-bottom: 16px;
+}
+
+#mfa-code {
+  font-size: 22px;
+  letter-spacing: 0.2em;
+  text-align: center;
+}
+
+/* ── Panel body (sharing / emergency) ───────────────────────────── */
+.panel-body {
+  flex: 1;
+  overflow-y: auto;
+  padding: 20px 24px;
+}
+
+/* ── Tabs ────────────────────────────────────────────────────────── */
+.panel-tabs {
+  display: flex;
+  gap: 4px;
+  margin-bottom: 16px;
+  border-bottom: 2px solid var(--color-border);
+  padding-bottom: 0;
+}
+
+.tab-btn {
+  padding: 8px 16px;
+  border-radius: 6px 6px 0 0;
+  font-size: 13px;
+  font-weight: 500;
+  color: var(--color-text-muted);
+  border-bottom: 2px solid transparent;
+  margin-bottom: -2px;
+  transition: color var(--transition), border-color var(--transition);
+}
+
+.tab-btn:hover {
+  color: var(--color-text);
+}
+
+.tab-btn.active {
+  color: var(--color-primary);
+  border-bottom-color: var(--color-primary);
+}
+
+/* ── Share / Emergency lists ────────────────────────────────────── */
+.share-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.share-item {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  background: var(--color-surface);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius);
+  padding: 12px 14px;
+}
+
+.share-icon {
+  font-size: 22px;
+  flex-shrink: 0;
+}
+
+.share-info {
+  flex: 1;
+  min-width: 0;
+}
+
+.share-name {
+  display: block;
+  font-weight: 500;
+}
+
+.share-meta {
+  display: block;
+  font-size: 12px;
+  color: var(--color-text-muted);
+  margin-top: 2px;
+}
+
+.share-actions {
+  display: flex;
+  gap: 6px;
+  align-items: center;
+  flex-shrink: 0;
+}
+
+/* ── Badges ──────────────────────────────────────────────────────── */
+.badge {
+  display: inline-block;
+  padding: 3px 8px;
+  border-radius: 12px;
+  font-size: 12px;
+  font-weight: 500;
+}
+
+.badge-warn {
+  background: #fff8e1;
+  color: #e65100;
+  border: 1px solid #ffb74d;
+}
+
+.badge-info {
+  background: #e3f2fd;
+  color: #1565c0;
+  border: 1px solid #90caf9;
+}
+
+/* ── Settings modal ──────────────────────────────────────────────── */
+.modal-settings {
+  max-width: 520px;
+}
+
+.settings-section {
+  padding: 16px 0;
+  border-bottom: 1px solid var(--color-border);
+}
+
+.settings-section:last-child {
+  border-bottom: none;
+}
+
+.settings-section-title {
+  font-size: 15px;
+  font-weight: 600;
+  margin-bottom: 8px;
+}
+
+.settings-desc {
+  font-size: 13px;
+  color: var(--color-text-muted);
+  margin-bottom: 10px;
+  line-height: 1.5;
+}
+
+.mfa-qr {
+  display: block;
+  margin: 12px auto;
+  max-width: 180px;
+  border: 1px solid var(--color-border);
+  border-radius: 4px;
+}
+
+.mfa-secret-text {
+  font-family: monospace;
+  font-size: 12px;
+}
+
+.mfa-secret-text code {
+  background: var(--color-bg);
+  padding: 2px 6px;
+  border-radius: 4px;
+  user-select: all;
+}
+
+/* ── Security dashboard ──────────────────────────────────────────── */
+.security-dashboard {
+  flex: 1;
+  overflow-y: auto;
+  padding: 24px;
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+}
+
+.sec-notice {
+  text-align: center;
+  color: var(--color-text-muted);
+  padding: 40px 0;
+  font-size: 15px;
+}
+
+.security-summary {
+  display: flex;
+  gap: 20px;
+  align-items: center;
+  background: var(--color-surface);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius);
+  padding: 24px;
+  flex-wrap: wrap;
+}
+
+.sec-score-card {
+  text-align: center;
+  flex-shrink: 0;
+}
+
+.sec-score {
+  font-size: 56px;
+  font-weight: 700;
+  line-height: 1;
+}
+
+.sec-score.score-good {
+  color: #2e7d32;
+}
+
+.sec-score.score-fair {
+  color: #e65100;
+}
+
+.sec-score.score-poor {
+  color: #c62828;
+}
+
+.sec-score-label {
+  font-size: 16px;
+  font-weight: 600;
+  margin-top: 4px;
+}
+
+.sec-score-desc {
+  font-size: 12px;
+  color: var(--color-text-muted);
+  margin-top: 2px;
+}
+
+.sec-stats {
+  display: flex;
+  gap: 16px;
+  flex-wrap: wrap;
+}
+
+.sec-stat {
+  text-align: center;
+  background: var(--color-bg);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius);
+  padding: 12px 20px;
+  min-width: 80px;
+}
+
+.sec-stat-warn {
+  border-color: #ffb74d;
+  background: #fff8e1;
+}
+
+.sec-stat-info {
+  border-color: #90caf9;
+  background: #e3f2fd;
+}
+
+.sec-stat-ok {
+  border-color: #a5d6a7;
+  background: #e8f5e9;
+}
+
+.sec-stat-num {
+  display: block;
+  font-size: 28px;
+  font-weight: 700;
+}
+
+.sec-stat-label {
+  display: block;
+  font-size: 12px;
+  color: var(--color-text-muted);
+  margin-top: 2px;
+}
+
+.sec-section {
+  background: var(--color-surface);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius);
+  overflow: hidden;
+}
+
+.sec-section-header {
+  display: flex;
+  align-items: flex-start;
+  gap: 12px;
+  padding: 16px 20px;
+  border-bottom: 1px solid var(--color-border);
+  background: var(--color-bg);
+}
+
+.sec-section-icon {
+  font-size: 20px;
+  flex-shrink: 0;
+}
+
+.sec-section-title {
+  font-weight: 600;
+  font-size: 15px;
+}
+
+.sec-section-desc {
+  font-size: 12px;
+  color: var(--color-text-muted);
+  margin-top: 2px;
+}
+
+.sec-item-list {
+  padding: 0;
+}
+
+.sec-item {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 10px 20px;
+  border-bottom: 1px solid var(--color-border);
+}
+
+.sec-item:last-child {
+  border-bottom: none;
+}
+
+.sec-item-name {
+  font-weight: 500;
+  flex: 1;
+}
+
+.sec-item-sub {
+  font-size: 12px;
+  color: var(--color-text-muted);
+  flex: 1;
+}
+
+/* ── Item Detail Modal ───────────────────────────────────────────── */
+.modal-detail {
+  max-height: 80vh;
+  display: flex;
+  flex-direction: column;
+}
+
+.detail-body {
+  flex: 1;
+  overflow-y: auto;
+  padding: 4px 0;
+}
+
+.detail-field {
+  display: flex;
+  align-items: flex-start;
+  gap: 12px;
+  padding: 10px 0;
+  border-bottom: 1px solid var(--color-border);
+}
+
+.detail-field:last-child {
+  border-bottom: none;
+}
+
+.detail-label {
+  font-size: 12px;
+  color: var(--color-text-muted);
+  width: 140px;
+  flex-shrink: 0;
+  padding-top: 4px;
+}
+
+.detail-val-row {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  flex: 1;
+  flex-wrap: wrap;
+}
+
+.detail-val {
+  font-size: 14px;
+  word-break: break-all;
+}
+
+.detail-sensitive {
+  display: inline-flex;
+  align-items: center;
+  font-family: monospace;
+  font-size: 14px;
+}
+
+.detail-masked {
+  letter-spacing: 2px;
+}
+
+.detail-actual {
+  word-break: break-all;
+}
+
+.btn-reveal,
+.btn-copy-field {
+  background: none;
+  border: none;
+  cursor: pointer;
+  padding: 2px 4px;
+  font-size: 14px;
+  color: var(--color-text-muted);
+  flex-shrink: 0;
+}
+
+.btn-reveal:hover,
+.btn-copy-field:hover {
+  color: var(--color-primary);
+}
+
+/* ── Emergency Vault Panel ───────────────────────────────────────── */
+.em-vault-panel {
+  padding: 8px 0;
+}
+
+.em-vault-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 4px 0 16px;
+  border-bottom: 2px solid var(--color-border);
+  margin-bottom: 8px;
+}
+
+.em-vault-header h4 {
+  margin: 0;
+  font-size: 15px;
+  font-weight: 600;
+}
+
+.em-vault-list {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+}
+
+.em-vault-item {
+  border-bottom: 1px solid var(--color-border);
+}
+
+.em-vault-item:last-child {
+  border-bottom: none;
+}
+
+.em-vault-item-header {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  width: 100%;
+  background: none;
+  border: none;
+  padding: 12px 4px;
+  cursor: pointer;
+  text-align: left;
+}
+
+.em-vault-item-header:hover {
+  background: var(--color-bg);
+  border-radius: var(--radius);
+}
+
+.em-vault-icon {
+  font-size: 18px;
+  flex-shrink: 0;
+}
+
+.em-vault-name {
+  font-weight: 500;
+  flex: 1;
+}
+
+.em-vault-type {
+  font-size: 12px;
+  color: var(--color-text-muted);
+}
+
+.em-vault-chevron {
+  font-size: 12px;
+  color: var(--color-text-muted);
+  flex-shrink: 0;
+}
+
+.em-vault-item-body {
+  padding: 0 8px 12px 36px;
+}
+
+.em-detail-body .detail-field {
+  padding: 8px 0;
+}
+
 /* ── Sidebar ─────────────────────────────────────────────────────── */
 
 /* ── Base sidebar styles (shared by mobile and desktop) ─────────── */