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

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-box {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 30px 20px;
    text-align: center;
}

.login-header h1 {
    font-size: 24px;
    margin-bottom: 8px;
    font-weight: 600;
}

.login-header p {
    font-size: 12px;
    opacity: 0.9;
    font-weight: 300;
}

.login-form {
    padding: 30px;
}

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

.login-form .form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.login-form input,
.login-form select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s;
}

.login-form input:focus,
.login-form select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-top: 10px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

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

.login-footer {
    margin-top: 20px;
    text-align: center;
    display: flex;
    justify-content: space-between;
}

.login-footer a {
    color: #667eea;
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s;
}

.login-footer a:hover {
    color: #764ba2;
    text-decoration: underline;
}

.demo-accounts {
    background: #f8f9fa;
    padding: 15px 30px;
    border-top: 1px solid #e9ecef;
}

.demo-accounts p {
    font-size: 12px;
    color: #666;
    margin-bottom: 8px;
    font-weight: 600;
}

.demo-accounts ul {
    list-style: none;
}

.demo-accounts li {
    font-size: 11px;
    color: #888;
    padding: 3px 0;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .login-container {
        padding: 10px;
    }

    .login-header h1 {
        font-size: 20px;
    }

    .login-form {
        padding: 20px;
    }
}