Bildervorschau als Slider für jede Fehrienwohnung

static/css/style.css

@@ -12,11 +12,6 @@
   --radius:      8px;
   --max-width:   1100px;
   --nav-height:  64px;
-
-  /* ===== SCHALTER: Hintergrund hinter "Herzlich Willkommen" =====
-     Genau EINE der beiden Zeilen aktiv lassen, die andere auskommentieren: */
-  /* --welcome-bg: url('/images/haus/Wolframm-Fewo-Kaufbeuren-Ferienwohnung-Ferienwohnungen-Wohnungen-mieten-87600-allgaeu-Titel.jpg'); */ /* Biene */
-  --welcome-bg: url('/images/background-flowers.jpg');                                                                                    /* Blumen */
 }
 
 @media (prefers-color-scheme: dark) {
@@ -166,30 +161,24 @@ img { max-width: 100%; height: auto; display: block; }
 
 /* ===== Willkommen ===== */
 .welcome {
-  background-image: var(--welcome-bg);
-  background-size: cover;
-  background-position: center;
-  background-repeat: no-repeat;
+  background: var(--bg-alt);
   padding: 5rem 1.5rem;
   text-align: center;
 }
 .welcome-inner {
   max-width: 720px;
   margin: 0 auto;
-  background: rgba(255,255,255,0.80);
-  padding: 2.5rem 2rem;
-  border-radius: var(--radius);
-  color: #333;
+  color: var(--text);
 }
 .welcome h1 {
-  color: #e08309;
+  color: var(--primary);
   font-size: 2.6rem;
   line-height: 1.15;
   text-transform: uppercase;
   letter-spacing: 1px;
   margin-bottom: 0.25rem;
 }
-.welcome-sub { font-size: 1.3rem; font-weight: 600; color: #333; margin-bottom: 1.5rem; }
+.welcome-sub { font-size: 1.3rem; font-weight: 600; color: var(--text); margin-bottom: 1.5rem; }
 .welcome-text { font-size: 1.05rem; line-height: 1.7; }
 .welcome-text p { margin-bottom: 1rem; }
 .welcome-cta { margin-top: 1.5rem; }
@@ -398,21 +387,72 @@ img { max-width: 100%; height: auto; display: block; }
   .slider--single .slider-slide { height: 280px; }
 }
 
-/* ===== Galerie ===== */
-.galerie {
-  display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
-  gap: 0.75rem;
-  margin-bottom: 2rem;
+/* FeWo-Galerie: 4 Bilder nebeneinander, Klick öffnet Lightbox */
+.slider--quad { margin-bottom: 2rem; }
+.slider--quad .slider-slide {
+  flex: 0 0 calc((100% - 3 * 0.75rem) / 4);
+  width: calc((100% - 3 * 0.75rem) / 4);
+  height: 200px;
 }
-.galerie-img {
-  width: 100%;
-  height: 160px;
-  object-fit: cover;
-  border-radius: var(--radius);
-  transition: opacity 0.2s;
+@media (max-width: 900px) {
+  .slider--quad .slider-slide {
+    flex-basis: calc((100% - 0.75rem) / 2);
+    width: calc((100% - 0.75rem) / 2);
+    height: 180px;
+  }
+}
+@media (max-width: 480px) {
+  .slider--quad .slider-slide { flex-basis: 100%; width: 100%; height: 220px; }
+}
+
+/* Lightbox */
+.lightbox {
+  position: fixed;
+  inset: 0;
+  z-index: 1000;
+  background: rgba(0,0,0,0.92);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+.lightbox[hidden] { display: none; }
+.lightbox-img { max-width: 90vw; max-height: 85vh; object-fit: contain; border-radius: var(--radius); }
+.lightbox-close {
+  position: absolute;
+  top: 1rem;
+  right: 1.25rem;
+  background: none;
+  border: none;
+  color: #fff;
+  font-size: 2.25rem;
+  line-height: 1;
+  cursor: pointer;
+}
+.lightbox-close:hover { color: var(--primary); }
+.lightbox-arrow {
+  position: absolute;
+  top: 50%;
+  transform: translateY(-50%);
+  width: 3rem;
+  height: 3rem;
+  border-radius: 50%;
+  border: none;
+  background: rgba(255,255,255,0.15);
+  color: #fff;
+  font-size: 1.25rem;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+.lightbox-arrow:hover { background: var(--primary); }
+.lightbox-prev { left: 1rem; }
+.lightbox-next { right: 1rem; }
+@media (max-width: 600px) {
+  .lightbox-arrow { width: 2.5rem; height: 2.5rem; }
+  .lightbox-prev { left: 0.5rem; }
+  .lightbox-next { right: 0.5rem; }
 }
-.galerie-link:hover .galerie-img { opacity: 0.85; }
 
 /* ===== Buchung ===== */
 .buchung {