/* 登录页面样式 */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, #3f51b5 0%, #303f9f 100%);
    color: white;
    padding: 30px 20px;
    text-align: center;
}

.login-header h2 {
    margin: 0 0 8px 0;
    font-size: 24px;
    font-weight: 600;
}

.login-header p {
    margin: 0;
    opacity: 0.9;
    font-size: 14px;
}

.login-body {
    padding: 30px 20px;
}

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

.login-logo img {
    max-height: 60px;
    max-width: 200px;
}

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

.login-form label {
    font-weight: 500;
    color: #555;
    margin-bottom: 8px;
}

.login-form .form-control {
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s ease;
}

.login-form .form-control:focus {
    border-color: #3f51b5;
    box-shadow: 0 0 0 3px rgba(63, 81, 181, 0.1);
}

.captcha-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.captcha-question {
    background: #f8f9fa;
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 600;
    color: #3f51b5;
    min-width: 100px;
    text-align: center;
    border: 2px solid #e1e5e9;
}

.captcha-container .form-control {
    flex: 1;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #3f51b5 0%, #303f9f 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(63, 81, 181, 0.3);
}

.login-btn:active {
    transform: translateY(0);
}

.error-message {
    background: #fee;
    border: 1px solid #fcc;
    color: #c33;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.error-message i {
    font-size: 16px;
}

.login-footer {
    background: #f8f9fa;
    padding: 20px;
    text-align: center;
    color: #666;
    font-size: 13px;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .login-container {
        max-width: 100%;
        margin: 0 10px;
    }
    
    .login-header {
        padding: 25px 15px;
    }
    
    .login-header h2 {
        font-size: 20px;
    }
    
    .login-body {
        padding: 25px 15px;
    }
    
    .captcha-container {
        flex-direction: column;
        gap: 8px;
    }
    
    .captcha-question {
        min-width: auto;
        width: 100%;
    }
}