/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f0f2f5;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

a {
    color: #1890ff;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #40a9ff;
}

/* 登录容器 */
.login-container {
    width: 100%;
    max-width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-box {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    padding: 30px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 28px;
}

.login-header p {
    color: #7f8c8d;
    font-size: 16px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus {
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
    outline: none;
}

/* 记住我和忘记密码 */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.remember-me {
    display: flex;
    align-items: center;
}

.remember-me input[type="checkbox"] {
    margin-right: 6px;
}

.forgot-password {
    font-size: 14px;
}

/* 登录按钮 */
.login-btn {
    width: 100%;
    padding: 12px;
    background-color: #1890ff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.login-btn:hover {
    background-color: #40a9ff;
}

/* 分隔线 */
.login-divider {
    position: relative;
    text-align: center;
    margin: 20px 0;
}

.login-divider::before,
.login-divider::after {
    content: "";
    position: absolute;
    top: 50%;
    width: calc(50% - 30px);
    height: 1px;
    background-color: #e8e8e8;
}

.login-divider::before {
    left: 0;
}

.login-divider::after {
    right: 0;
}

.login-divider span {
    display: inline-block;
    padding: 0 10px;
    background-color: white;
    position: relative;
    color: #7f8c8d;
}

/* 第三方登录 */
.social-login {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 20px;
}

.social-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 4px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s;
}

.social-btn:hover {
    opacity: 0.9;
}

.social-btn.wechat {
    background-color: #07C160;
}

.social-btn.qq {
    background-color: #12B7F5;
}

/* 注册链接 */
.register-link {
    text-align: center;
    margin-top: 20px;
    color: #7f8c8d;
}

.register-link a {
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .login-box {
        padding: 20px;
    }
    
    .social-login {
        flex-direction: column;
    }
}