body {
  transition: background 0.3s ease;
  background-image: url("https://www.transparenttextures.com/patterns/purty-wood.png");
}
.dark-mode {
  background-color: #121212 !important;
  color: #eee;
  background-image: none;
}
.target,
.organel {
  text-align: center;
  margin: 0 auto;
  padding: 20px;
  width: 100%;
  max-width: 100%;
  font-size: 1.3rem;
  font-weight: 500;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
  line-height: 1.7;
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out,
    background 0.3s;
  height: auto;
  min-height: 80px;
  border: 2px dashed #ccc;
  border-radius: 16px;
  background-color: #fdfdfd;
  animation: fadeIn 0.6s ease;
}
.dark-mode .target,
.dark-mode .organel {
  background-color: #1e1e1e;
  border-color: #555;
  color: #ddd;
}
.target:hover,
.organel:active {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
}
.dropzone > div {
  margin-bottom: 18px;
}
.dropzone {
  background-color: #ffffffdd;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}
.dark-mode .dropzone {
  background-color: #1a1a1add;
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.08);
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.theme-toggle {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #4caf50;
}
.logo {
  width: 100px;
  height: auto;
  margin-bottom: 10px;
}