Theme-Toggle als Schalter + Karten-Vollbild + Zoom-Begrenzung

- Theme-Toggle: Button durch Sun/Moon-Slider ersetzt (Dark Mode Standard)
- Karte: Fullscreen-Overlay mit Expand-Icon, Escape zum Schließen
- Karte: Zoom-Limits (minZoom:2, maxBounds, noWrap)
- Karte: Button 'Orte erkennen' -> 'Orte einlesen', rechts ausgerichtet

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

src/static/css/style.css

@@ -3620,17 +3620,58 @@ a:hover {
 }
 
 /* === Theme Toggle Button === */
-.theme-toggle-btn {
-    font-size: 18px;
-    width: 36px;
-    height: 36px;
-    padding: 0;
+.theme-switch {
     display: flex;
     align-items: center;
-    justify-content: center;
-    border-radius: 50%;
+    gap: 6px;
     cursor: pointer;
-    transition: background 0.2s, border-color 0.2s;
+    user-select: none;
+    -webkit-user-select: none;
+}
+.theme-switch-icon {
+    font-size: 14px;
+    line-height: 1;
+    opacity: 0.4;
+    transition: opacity 0.3s;
+}
+.theme-switch.dark .theme-switch-moon,
+.theme-switch.light .theme-switch-sun {
+    opacity: 1;
+}
+.theme-switch-track {
+    position: relative;
+    width: 40px;
+    height: 22px;
+    border-radius: 11px;
+    background: var(--bg-tertiary, #1A2440);
+    border: 1px solid var(--border, #1E2D45);
+    transition: background 0.3s, border-color 0.3s;
+    flex-shrink: 0;
+}
+.theme-switch-knob {
+    position: absolute;
+    top: 2px;
+    left: 2px;
+    width: 16px;
+    height: 16px;
+    border-radius: 50%;
+    background: var(--accent, #C8A851);
+    box-shadow: 0 0 8px rgba(200, 168, 81, 0.3);
+    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s;
+}
+/* Dark mode: knob right */
+.theme-switch.dark .theme-switch-knob {
+    transform: translateX(18px);
+}
+/* Light mode: knob left */
+.theme-switch.light .theme-switch-knob {
+    transform: translateX(0);
+}
+.theme-switch:hover .theme-switch-track {
+    border-color: var(--accent, #C8A851);
+}
+.theme-switch:hover .theme-switch-knob {
+    box-shadow: 0 0 12px rgba(200, 168, 81, 0.5);
 }
 
 /* === Light Theme Sonderregeln === */
@@ -4234,6 +4275,16 @@ select:focus-visible, textarea:focus-visible,
 }
 .map-card .card-header {
     flex-shrink: 0;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+}
+.card-header-actions {
+    margin-left: auto;
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    flex-shrink: 0;
 }
 .map-stats {
     font-size: 12px;
@@ -4405,3 +4456,90 @@ a.map-popup-article:hover {
 [data-theme="light"] .map-cluster span {
     color: #fff;
 }
+
+/* Karten-Legende */
+.map-legend-ctrl {
+    background: var(--bg-card);
+    padding: 10px 14px;
+    border-radius: var(--radius-md);
+    box-shadow: var(--shadow-md);
+    font-size: 12px;
+    font-family: var(--font-body);
+    color: var(--text-primary);
+    border: 1px solid var(--border);
+    line-height: 1.6;
+}
+.map-legend-ctrl strong {
+    font-family: var(--font-title);
+    font-size: 13px;
+}
+[data-theme="light"] .map-legend-ctrl {
+    background: #fff;
+    border-color: #ddd;
+    color: #333;
+}
+
+/* SVG-Marker: kein Default-divIcon-Styling */
+.map-marker-svg {
+    background: none !important;
+    border: none !important;
+}
+.map-marker-svg svg {
+    filter: drop-shadow(1px 2px 3px rgba(0,0,0,0.35));
+}
+
+/* Map Expand Button */
+.map-expand-btn {
+    margin-left: auto;
+    width: 32px;
+    min-height: 32px;
+    padding: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+}
+.map-expand-btn:hover {
+    color: var(--accent);
+    border-color: var(--accent);
+}
+
+/* Map Fullscreen Overlay */
+.map-fullscreen-overlay {
+    display: none;
+    position: fixed;
+    inset: 0;
+    z-index: 10000;
+    background: var(--bg-primary);
+    flex-direction: column;
+}
+.map-fullscreen-overlay.active {
+    display: flex;
+}
+.map-fullscreen-header {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    padding: 12px 20px;
+    background: var(--bg-card);
+    border-bottom: 1px solid var(--border);
+    flex-shrink: 0;
+}
+.map-fullscreen-title {
+    font-family: var(--font-title);
+    font-size: 16px;
+    font-weight: 600;
+    color: var(--text-primary);
+}
+.map-fullscreen-stats {
+    flex: 1;
+}
+.map-fullscreen-container {
+    flex: 1;
+    position: relative;
+}
+.map-fullscreen-container .leaflet-container {
+    width: 100% !important;
+    height: 100% !important;
+}
+