.theme-split-screen {
  display: flex;
  height: 100vh;
  width: 100%;
  position: relative;
}

.split {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: white;
}

.left {
  background: url('optimized_img/theme_pictures/kids_2025-400.webp') center/cover no-repeat;
}

.right {
  background: url('theme_pictures/teens_2025.jpg') center/cover no-repeat;
}

.overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.45);
  transition: background 0.3s;
  z-index: 1;
}

.content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.content h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
  text-shadow: 0 3px 10px #000;
}

.theme-button {
  display: inline-block;
  background-color: #2a9d8f;
  color: white;
  text-decoration: none;
  padding: 12px 28px;
  font-size: 1.1rem;
  border-radius: 30px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  transition: background 0.3s;
}

.theme-button:hover {
  background-color: #21867a;
}

.split:hover .overlay {
  background: rgba(0, 0, 0, 0.6);
}

@media (max-width: 768px) {
  .theme-split-screen {
    flex-direction: column;
  }
  .split {
    height: 50vh;
  }
  .content h2 {
    font-size: 2rem;
  }
}

.year-block {
  margin-bottom: 60px;
}

.year-title {
  text-align: center;
  font-size: 4rem;
  font-weight: 700;
  color: #264653;
  margin: 0px 0 50px 0;
  text-shadow: 0 3px 12px #ffffff99;
}

@media (max-width: 768px) {
  .year-title {
    font-size: 2.4rem;
    margin: 0px 0 20px 0;
  }
}