body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
  transition: background-color 0.5s ease, color 0.5s ease;
}

.container {
  max-width: 600px;
  margin: auto;
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px #ccc;
  position: relative;
  transition: background-color 0.5s ease, box-shadow 0.5s ease, color 0.5s ease;
}

.dark {
  background-color: #222;
  color: #f4f4f4;
  transition: background-color 0.5s ease, color 0.5s ease;
}

.dark .container {
  background: #333;
  color: #fff;
  box-shadow: 0 0 10px #000;
  transition: background-color 0.5s ease, box-shadow 0.5s ease, color 0.5s ease;
}

#theme-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
}

.input-area {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

input[type="text"],
input[type="date"],
select {
  flex: 1;
  padding: 8px;
  border-radius: 5px;
  border: 1px solid #ccc;
  transition: background-color 0.5s ease, color 0.5s ease;
}

button {
  padding: 8px 16px;
  border: none;
  background-color: #28a745;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.5s ease, color 0.5s ease;
}

ul {
  list-style-type: none;
  padding: 0;
}

li.task {
  background-color: #f9f9f9;
  margin-bottom: 8px;
  padding: 10px;
  border-radius: 5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: grab;
  transition: background-color 0.5s ease, color 0.5s ease;
}

.dark li.task {
  background-color: #444;
}

.delete {
  background: none;
  color: red;
  font-size: 18px;
  border: none;
  cursor: pointer;
  line-height: 1;
  font-weight: bold;
  transition: background-color 0.5s ease, color 0.5s ease;
}

.delete:hover {
  background: darkred;
}

.info {
  flex: 1;
  margin-right: 10px;
}