/* 基本表单样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    max-width: 600px;
    margin: 40px auto;
    padding: 20px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 5px;
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

h2 {
    font-size: 16px;
    margin: 20px 0 15px;
    color: #555;
    border-bottom: 1px solid #eee;
    padding-bottom: 5px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input {
    width: 100px;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 3px;
    margin: 0 5px;
}

.form-group input[type="text"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 14px;
}

.form-group input.error {
    border-color: #dc3545;
}

.note {
    font-size: 12px;
    color: #666;
    margin-left: 10px;
}

.error-msg {
    color: #dc3545;
    font-size: 14px;
    margin: 10px 0;
    min-height: 20px;
}

button {
    display: block;
    width: 100%;
    padding: 8px 16px;
    background-color: #f0f0f0;
    color: #333;
    border: 1px solid #ccc;
    font-size: 14px;
    cursor: pointer;
    margin-top: 20px;
}

button:hover {
    background-color: #e0e0e0;
}

/* 响应式 */
@media (max-width: 768px) {
    .container {
        margin: 20px;
        padding: 15px;
    }
    
    .month-input,
    .custom-input {
        margin-left: 0;
    }
    
    .month-input input,
    .custom-input input {
        width: 60px;
    }
}