/* General Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f0f2f5;
  display: flex;
  justify-content: center;
  padding: 40px 20px;
}

/* Container */
.container {
  background-color: #fff;
  padding: 30px 25px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  width: 100%;
  max-width: 450px;
}

/* Heading */
.container h1 {
  text-align: center;
  margin-bottom: 25px;
  color: #333;
}

/* Form */
#task-form {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

#task-bar {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

#task-form button {
  padding: 10px 18px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s;
}

#task-form button:hover {
  background-color: #45a049;
}

/* Task List */
#list-item {
  list-style: none;
}

#list-item li {
  display: flex;
  align-items: center;
  background-color: #f9f9f9;
  padding: 10px 12px;
  margin-bottom: 10px;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  transition: background-color 0.2s;
}

#list-item li:hover {
  background-color: #f1f1f1;
}

#list-item input[type="checkbox"] {
  margin-right: 10px;
  transform: scale(1.2);
}

#list-item span {
  flex: 1;
  font-size: 16px;
  color: #333;
}

#list-item button {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  margin-left: 8px;
}

#list-item button:hover {
  opacity: 0.7;
}