body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f4f8;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

input[type="text"], input[type="date"] {
    width: calc(100% - 22px);
    padding: 12px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    transition: border 0.3s;
}

input[type="text"]:focus, input[type="date"]:focus {
    border-color: #007bff;
    outline: none;
}

button {
    padding: 10px; /* 调整按钮内边距 */
    width: 100%;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

ul {
    list-style-type: none;
    padding: 0;
    margin-top: 20px;
}

li {
    padding: 10px; /* 保持内边距 */
    background: #e9ecef;
    margin: 5px 0;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: background 0.3s;
}

li:hover {
    background: #d6d9db;
}

li span {
    flex-grow: 1; /* 让日程内容占据更大空间 */
    margin-right: 10px; /* 为按钮留出空间 */
    font-weight: bold; /* 加粗日程文本 */
}

.completed {
    text-decoration: line-through;
    color: gray;
}

.complete-button, .delete-button {
    padding: 5px 6px; /* 进一步减小按钮大小 */
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-size: 0.9em; /* 调整字体大小 */
    transition: background-color 0.3s, transform 0.2s;
}

.complete-button {
    background-color: #28a745;
    color: white;
}

.complete-button:hover {
    background-color: #218838;
    transform: translateY(-2px);
}

.delete-button {
    background-color: #dc3545;
    color: white;
}

.delete-button:hover {
    background-color: #c82333;
    transform: translateY(-2px);
}