/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, rgba(245, 247, 250, 0.8) 0%, rgba(195, 207, 226, 0.8) 100%), 
                url('./bg.jpg') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
}

/* 登录卡片样式 */
.login-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 450px;
    height: 470px; /* 设置固定高度 */
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.login-form {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

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

.error-message {
    color: #dc3545;
    margin: 15px 0;
    text-align: center;
    min-height: 40px; /* 预留足够空间 */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
}

.success-message {
    color: #28a745;
    margin: 15px 0;
    text-align: center;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.login-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.logo {
    background-color: #4a69bd;
    color: white;
    padding: 20px;
    text-align: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 600;
}

.login-form {
    padding: 30px;
}

.login-form h2 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
    font-size: 1.5rem;
}

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

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

input:focus {
    border-color: #4a69bd;
    outline: none;
    box-shadow: 0 0 0 2px rgba(74, 105, 189, 0.2);
}

.btn-login {
    width: 100%;
    background-color: #4a69bd;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-login:hover {
    background-color: #3c5aa6;
}

.error-message {
    color: #e74c3c;
    margin-top: 15px;
    text-align: center;
    font-size: 0.9rem;
    min-height: 20px;
}

/* 学生信息页面样式 */
.student-info-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 800px;
    overflow: hidden;
}

.info-header {
    background-color: #4a69bd;
    color: white;
    padding: 20px;
    text-align: center;
}

.info-content {
    padding: 30px;
}

.info-row {
    display: flex;
    margin-bottom: 15px;
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
}

.info-label {
    width: 120px;
    font-weight: 600;
    color: #555;
}

.info-value {
    flex: 1;
    color: #333;
}

.info-actions {
    text-align: center;
    padding: 20px;
    border-top: 1px solid #eee;
}

.btn-danger {
    background-color: #f44336;
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(244, 67, 54, 0.2);
}

.btn-danger:hover {
    background-color: #d32f2f;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(244, 67, 54, 0.3);
}
    border-radius: 5px;
    padding: 10px 15px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 20px;
}

.btn-logout:hover {
    background-color: #c0392b;
}

/* 页脚样式 */
footer {
    margin-top: 30px;
    text-align: center;
    color: #666;
    font-size: 0.8rem;
    padding: 10px;
    width: 100%;
}

/* 响应式设计 */
/* 修改现有的媒体查询部分 */
@media (max-width: 768px) {
    .login-card, .student-info-card {
        max-width: 95%;
        margin: 20px auto;
    }
    
    .login-form, .info-content {
        padding: 15px;
    }
    
    .logo h1 {
        font-size: 1.5rem;
        padding: 15px 0;
    }
    
    input, .btn-login {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    
    /* 新增登录页面特定样式 */
    .login-form h2 {
        font-size: 1.2rem;
        margin-bottom: 15px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
}

/* 在文件最后新增针对小屏幕的优化 */
@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .login-card {
        border-radius: 8px;
    }
    
    .btn-login, .btn-danger {
        padding: 10px;
        font-size: 0.9rem;
    }
    
    .info-label {
        width: 100px; /* 缩小标签宽度 */
        font-size: 0.9rem;
    }
    
    .info-value {
        font-size: 0.9rem;
    }
}

.error-message {
    color: #dc3545;
    margin-top: 10px;
    text-align: center;
    display: none; /* 初始隐藏 */
}

.success-message {
    color: #28a745;
    margin-top: 10px;
    text-align: center;
}