/* 全局基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
}

body {
    background-color: #f5f5f5;
    line-height: 1.6;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* index.html 专属样式 */
h1 {
    color: #2c3e50;
    margin: 30px 0 20px;
    text-align: center;
}

p {
    color: #34495e;
    font-size: 1.1rem;
    margin-bottom: 30px;
    text-align: center;
}

/* 通用链接样式 */
a {
    color: #3498db;
    text-decoration: none;
    padding: 8px 16px;
    border: 2px solid #3498db;
    border-radius: 5px;
    display: block;
    width: fit-content;
    margin: 0 auto;
    transition: all 0.3s ease;
}

a:hover {
    background-color: #3498db;
    color: white;
}

/* register.html 表单样式 */
form {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    max-width: 450px;
    margin: 50px auto;
}

form div {
    margin-bottom: 20px;
}

label {
    display: block;
    color: #2c3e50;
    margin-bottom: 8px;
    font-weight: 500;
}

input {
    width: 100%;
    padding: 10px;
    border: 2px solid #bdc3c7;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #3498db;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #2980b9;
}

/* 错误提示样式 */
[id$="Error"] {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 5px;
    min-height: 20px; /* 保持布局稳定 */
}