body {
  font-family: "Segoe UI", sans-serif;
  background: linear-gradient(to bottom, #d0e9ff, #b3dcff, #99cfff);  
  margin: 0;
  padding: 0;
  
}

/* Header & Titel */
header {
  text-align: center;
  padding: 2rem 1rem 1rem;
  background: #f0f4f8;
}
.subtitle {
  font-size: 1.1rem;
  color: #666;
  margin-top: -1rem;
  margin-bottom: 2rem;
  text-align: center;
}

/* Jahresnavigation */
.year-nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 2rem 0;
}
.year-nav a {
  padding: 0.5rem 1rem;
  background: #eee;
  border-radius: 5px;
  text-decoration: none;
  color: #333;
  font-weight: bold;
}
.year-nav a:hover {
  background: #ccc;
}
.year-nav .active {
  background: #0078d4;
  color: white;
}
.year-section {
  margin-top: 3rem;
  background: linear-gradient(to bottom, #d0e9ff, #b3dcff, #99cfff); /* hellblauer Verlauf */
  padding: 2rem;
  border-radius: 8px;
}

/* Aktivitätskarten */
.activity-cards {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 2rem;
  max-width: 600px;
  margin: auto;
}
.card {
  background: #f9f9f9;
  border-radius: 10px;
  padding: 1rem;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  cursor: pointer;
  transition: transform 0.2s;
  text-align: center;
}
.card:hover {
  transform: scale(1.02);
}
.card img {
  width: 50px;
  height: 50px;
  margin-bottom: 0.5rem;
}
.card h3 {
  margin: 0.5rem 0;
  font-size: 1.2rem;
}
.card p {
  color: #666;
  font-size: 0.95rem;
}

/* Galerie-Bilder */
.gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2rem;
  max-width: 700px;
  margin: auto;
}
.photo-card {
  background: #fdfdfd;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  overflow: hidden;
  transition: transform 0.2s;
}
.photo-card:hover {
  transform: scale(1.05);
}
.photo-card img {
  width: 100%;
  height: auto;
  display: block;
}
.photo-card h3 {
  margin: 0.5rem 1rem 0;
}
.photo-card p {
  margin: 0.5rem 1rem 1rem;
  color: #555;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.8);
  justify-content: center;
  align-items: center;
  z-index: 1000;
  flex-direction: column;
}
.lightbox img {
  max-width: 90%;
  max-height: 80%;
  transition: transform 0.3s;
  cursor: zoom-in;
}
.lightbox img.zoomed {
  transform: scale(1.5);
  cursor: zoom-out;
}
.lightbox .close {
  position: absolute;
  top: 20px; right: 30px;
  font-size: 2rem;
  color: white;
  cursor: pointer;
}
.lightbox .nav {
  margin-top: 1rem;
}
.lightbox .nav button {
  background: #fff;
  border: none;
  padding: 0.5rem 1rem;
  margin: 0 0.5rem;
  font-size: 1.2rem;
  cursor: pointer;
}
.buttons {
  text-align: center; /* optional, damit die Buttons mittig stehen */
  margin: 2rem 0;
}

.buttons a {
  display: inline-block;
  padding: 10px 15px;
  margin: 5px;
  background-color: #007BFF; /* Blau */
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
}

.buttons a:hover {
  background-color: #0056b3; /* dunkleres Blau beim Hover */
}

.gallery img {
  max-width: 250px;   /* oder 200px, je nach Geschmack */
  height: auto;
  margin: 10px;
  border-radius: 6px;
  cursor: pointer;
}
.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}
.photo-card img {
  max-width: 220px;
  height: auto;
  border-radius: 6px;
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
}

.photo-card img:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.lightbox {
  display: none;
  position: fixed;
  z-index: 999;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.8);
  justify-content: center;
  align-items: center;
}

.lightbox img {
  max-width: 95%;
  max-height: 95%;
  border-radius: 8px;
}

.buttons {
  text-align: center;
  margin: 2rem 0;
}

.buttons a {
  display: inline-block;
  padding: 10px 15px;
  margin: 5px;
  background-color: #007BFF;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
}

.buttons a:hover {
  background-color: #0056b3;
}
.box img {
  max-width: 220px;
  height: auto;
  border-radius: 6px;
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
}

.box img:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}