feat: mobile bottom navigation bar

5-item fixed bottom bar (Dashboard, Focus, Tasks, Calendar, More)
visible only on mobile (<768px). "More" opens a slide-up panel
with links to Notes, Meetings, Decisions, Contacts, Weblinks, Admin.
Active page highlighted with accent color. Desktop unaffected.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

static/style.css

@@ -1019,13 +1019,130 @@ a:hover { color: var(--accent-hover); }
 ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
 ::-webkit-scrollbar-thumb:hover { background: var(--muted); }
 
+/* ---- Mobile Bottom Nav ---- */
+.mobile-bottom-bar {
+    display: none;
+    position: fixed;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    height: 56px;
+    background: var(--surface);
+    border-top: 1px solid var(--border);
+    z-index: 200;
+    align-items: center;
+    justify-content: space-around;
+    padding: 0 4px;
+    padding-bottom: env(safe-area-inset-bottom, 0);
+}
+
+.mobile-nav-item {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 2px;
+    flex: 1;
+    padding: 6px 0;
+    color: var(--muted);
+    text-decoration: none;
+    background: none;
+    border: none;
+    font-family: var(--font-body);
+    cursor: pointer;
+    transition: color var(--transition);
+    -webkit-tap-highlight-color: transparent;
+}
+
+.mobile-nav-item svg {
+    width: 24px;
+    height: 24px;
+}
+
+.mobile-nav-item span {
+    font-size: 10px;
+    font-weight: 500;
+    line-height: 1;
+}
+
+.mobile-nav-item.active {
+    color: var(--accent);
+}
+
+/* Mobile More Panel */
+.mobile-more-panel {
+    display: none;
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    z-index: 199;
+}
+
+.mobile-more-panel.open {
+    display: block;
+}
+
+.mobile-more-backdrop {
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: rgba(0, 0, 0, 0.4);
+}
+
+.mobile-more-content {
+    position: absolute;
+    bottom: 56px;
+    left: 0;
+    right: 0;
+    background: var(--surface);
+    border-top: 1px solid var(--border);
+    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
+    padding: 8px 0;
+    transform: translateY(100%);
+    transition: transform 200ms ease;
+    padding-bottom: env(safe-area-inset-bottom, 0);
+}
+
+.mobile-more-panel.open .mobile-more-content {
+    transform: translateY(0);
+}
+
+.mobile-more-item {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    padding: 12px 20px;
+    color: var(--text);
+    text-decoration: none;
+    font-size: 0.92rem;
+    font-weight: 500;
+    transition: background var(--transition);
+}
+
+.mobile-more-item:hover {
+    background: var(--surface2);
+    color: var(--text);
+}
+
+.mobile-more-item svg {
+    width: 20px;
+    height: 20px;
+    color: var(--muted);
+    flex-shrink: 0;
+}
+
 /* ---- Responsive ---- */
 @media (max-width: 768px) {
     .sidebar { display: none; }
     .main-content { margin-left: 0; }
     .form-grid { grid-template-columns: 1fr; }
     .dashboard-grid { grid-template-columns: 1fr; }
-    .page-content { padding: 16px; }
+    .page-content { padding: 16px; padding-bottom: 72px; }
+    .mobile-bottom-bar { display: flex; }
 }
 .search-type-appointments { background: var(--amber-soft); color: var(--amber); }