/* 全局样式 */
body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    font-family: 'Roboto', sans-serif;
}

main {
    flex: 1 0 auto;
}

/* 登录页面 */
.login-card {
    margin-top: 50px;
}

.google-btn {
    background-color: #4285F4;
}

.google-btn:hover {
    background-color: #357AE8;
}

/* 闪存消息 */
.flash-message {
    padding: 10px;
    margin: 10px 0;
    border-radius: 3px;
}

.flash-message.error {
    background-color: #FFEBEE;
    color: #B71C1C;
}

.flash-message.success {
    background-color: #E8F5E9;
    color: #1B5E20;
}

/* 用户资料 */
.profile-image {
    width: 100px;
    height: 100px;
    margin: 10px auto;
}

/* 页脚 */
footer.page-footer {
    padding-top: 0;
    margin-top: 40px;
}

/* 响应式调整 */
@media only screen and (max-width: 600px) {
    .container {
        width: 95%;
    }
}