/* 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;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.login-form h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-weight: 300;
}

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

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

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
}

.checkbox-label input {
    width: auto;
    margin: 0;
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-login:hover {
    transform: translateY(-2px);
}

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

.register-link {
    text-align: center;
    margin-top: 20px;
    color: #666;
}

.register-link a {
    color: #667eea;
    text-decoration: none;
}

.error-message {
    background: #ffe6e6;
    color: #d63333;
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .login-form {
        padding: 30px 20px;
    }

    .login-form h1 {
        font-size: 24px;
    }
}