.light-theme {
    --body-bg-color: #ffffff;
    --topbar-background-color: #ffffff;
    --topbar-text-color: #000000;
    --theme-toggle-button-background-color: #ffffff;
    --theme-toggle-button-text-color: #000000;
    --theme-toggle-button-hover-background-color: #f2f2f2;
    --theme-toggle-button-active-background-color: #e6e6e6;
    --control-button-bg-color: #f8f8f8;
    --control-button-border-color: #cccccc;
    --control-button-color: #686868;
    --default-button-bg-color: #f2f2f2;
    --default-button-border-color: #c7c7c7;
    --default-button-color: #686868;
    --default-button-hover-bg-color: #e0e0e0;
    --default-button-active-bg-color: #d6d6d6;
    --output-container-color: #000000;
    --output-container-bg-color: #f3f3f3;
    --output-container-border-color: #c5c5c5;
    --output-container-scrollbar-thumb-bg-color: #33333366;
    --slider-bg-color: #ddd;
    --slider-thumb-bg-color: #1389ff;
    --input-border-color: #ddd;
    --input-bg-color: #ffffff;
    --input-color: #000000;
    --span-hz-unit-color: #797979;
    --github-logo-fill-color: #000000;
}

.dark-theme {
    --body-bg-color: #000000;
    --topbar-background-color: #000000;
    --topbar-text-color: #ffffff;
    --theme-toggle-button-background-color: #000000;
    --theme-toggle-button-text-color: #ffffff;
    --theme-toggle-button-hover-background-color: #333333;
    --theme-toggle-button-active-background-color: #484848;
    --control-button-bg-color: #333333;
    --control-button-border-color: #4f4f4f;
    --control-button-color: #ffffff;
    --default-button-bg-color: #333333;
    --default-button-border-color: #000000;
    --default-button-color: #ccc;
    --default-button-hover-bg-color: #444444;
    --default-button-active-bg-color: #535353;
    --output-container-color: #ccc;
    --output-container-bg-color: #212121;
    --output-container-border-color: #313131;
    --output-container-scrollbar-thumb-bg-color: #ffffff66;
    --slider-bg-color: #333333;
    --slider-thumb-bg-color: #005cb8;
    --input-border-color: #333333;
    --input-bg-color: #333333;
    --input-color: #cdcdcd;
    --span-hz-unit-color: #797979;
    --github-logo-fill-color: #ffffff;
}

@media (prefers-color-scheme: light) {
    :root {
        --body-bg-color: #ffffff;
        --topbar-background-color: #ffffff;
        --topbar-text-color: #000000;
        --theme-toggle-button-background-color: #ffffff;
        --theme-toggle-button-text-color: #000000;
        --theme-toggle-button-hover-background-color: #f2f2f2;
        --theme-toggle-button-active-background-color: #e6e6e6;
        --control-button-bg-color: #f8f8f8;
        --control-button-border-color: #cccccc;
        --control-button-color: #686868;
        --default-button-bg-color: #f2f2f2;
        --default-button-border-color: #c7c7c7;
        --default-button-color: #686868;
        --default-button-hover-bg-color: #e0e0e0;
        --default-button-active-bg-color: #d6d6d6;
        --output-container-color: #000000;
        --output-container-bg-color: #f3f3f3;
        --output-container-border-color: #c5c5c5;
        --output-container-scrollbar-thumb-bg-color: #33333366;
        --slider-bg-color: #ddd;
        --slider-thumb-bg-color: #1389ff;
        --input-border-color: #ddd;
        --input-bg-color: #ffffff;
        --input-color: #000000;
        --span-hz-unit-color: #797979;
        --github-logo-fill-color: #000000;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --body-bg-color: #000000;
        --topbar-background-color: #000000;
        --topbar-text-color: #ffffff;
        --theme-toggle-button-background-color: #000000;
        --theme-toggle-button-text-color: #ffffff;
        --theme-toggle-button-hover-background-color: #333333;
        --theme-toggle-button-active-background-color: #484848;
        --control-button-bg-color: #333333;
        --control-button-border-color: #4f4f4f;
        --control-button-color: #ffffff;
        --default-button-bg-color: #333333;
        --default-button-border-color: #000000;
        --default-button-color: #ccc;
        --default-button-hover-bg-color: #444444;
        --default-button-active-bg-color: #535353;
        --output-container-color: #ccc;
        --output-container-bg-color: #212121;
        --output-container-border-color: #313131;
        --output-container-scrollbar-thumb-bg-color: #ffffff66;
        --slider-bg-color: #333333;
        --slider-thumb-bg-color: #005cb8;
        --input-border-color: #333333;
        --input-bg-color: #333333;
        --input-color: #cdcdcd;
        --span-hz-unit-color: #797979;
        --github-logo-fill-color: #ffffff;
    }
}

body {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--body-bg-color);
    transition: all 1s ease-in-out;
}

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background-color: var(--topbar-background-color);
    color: var(--topbar-text-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
    padding: 0 20px;
    transition: all 1s ease-in-out;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 1s ease-in-out;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 1s ease-in-out;
}

#theme-toggle {
    background-color: var(--theme-toggle-button-background-color);
    color: var(--theme-toggle-button-text-color);
    font-size: 16px;
    padding: 8px 12px;
    margin: 0px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    float: right;
    transition: all 0.2s ease-in-out;
}

#theme-toggle:hover {
    background-color: var(--theme-toggle-button-hover-background-color);
    transition: all 0.2s ease-in-out;
}

#theme-toggle:active {
    background-color: var(--theme-toggle-button-active-background-color);
    transition: all 0.2s ease-in-out;
}

.octicon.octicon-mark-github.v-align-middle path {
    fill: var(--github-logo-fill-color);
    transition: all 1s ease-in-out;
}

.container {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

.big-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.control-button {
    width: 66px;
    height: 66px;
    border-radius: 33px;
    color: var(--control-button-color);
    background-color: var(--control-button-bg-color);
    border: 1px solid var(--control-button-border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 40px;
    color: #686868;
    font-weight: 400;
    margin: 0px 5px;
    transition: all 0.2s ease-in-out;
}

.default-button {
    width: 100px;
    height: 66px;
    border-radius: 18px;
    color: var(--default-button-color);
    background-color: var(--default-button-bg-color);
    border: 2px solid var(--default-button-border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 20px;
    font-weight: 400;
    margin: 0px 5px;
    transition: all 0.2s ease-in-out;
}

.default-button:hover,
.control-button:hover {
    background-color: var(--default-button-hover-bg-color);
}

.default-button:active,
.control-button:active {
    background-color: var(--default-button-active-bg-color);
}

.button-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    margin: 0px 5px;
}

.output-container {
    border-radius: 12px;
    color: var(--output-container-color);
    background-color: var(--output-container-bg-color);
    margin-top: 50px;
    padding: 16px;
    height: 200px;
    border: 2px solid var(--output-container-border-color);
    overflow-y: auto;
    transition: all 1s ease-in-out;
}

.output-container::-webkit-scrollbar {
    width: 8px;
}

.output-container::-webkit-scrollbar-thumb {
    background-color: var(--output-container-scrollbar-thumb-bg-color);
    border-radius: 4px;
}

.main {
    flex: 8;
    margin-right: 20px;
}

.value-container {
    flex: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

.left {
    flex: 3;
    margin-left: 20px;
    padding: 8px;
    float: right;
    width: 50%;
}

.bottom {
    flex: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

.slider-container {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.audio-hz-slider {
    width: 80%;
}

.slider {
    appearance: none;
    width: 100%;
    height: 22px;
    border-radius: 40px;
    background-color: var(--slider-bg-color);
    outline: none;
    margin-bottom: 24px;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 76px;
    height: 42px;
    border-radius: 16px;
    cursor: pointer;
}

.slider#hzRange::-webkit-slider-thumb {
    background-color: var(--slider-thumb-bg-color);
}

.audio-hz-slider input[type=range] {
    -webkit-appearance: none;
    appearance: none;
}

input#hzValue {
    width: 128px;
    height: 78px;
    padding: 0px;
    font-size: 34px;
    color: var(--input-color);
    background-color: var(--input-bg-color);
    border: 1px solid var(--input-border-color);
    border-radius: 18px;
    text-align: center;
    /* 将输入框中的文本居中对齐 */
    display: block;
    /* 将输入框设置为块级元素 */
    margin: 0 auto;
    /* 将输入框水平居中对齐 */
    margin-bottom: 18px;
}

span#hz-unit {
    flex: 1;
    display: inline-block;
    vertical-align: middle;
    font-size: 28px;
    margin-left: 14px;
    padding-bottom: 18px;
    color: var(--span-hz-unit-color);
}

div#blank-left {
    flex: 1;
}

div#blank-right {
    flex: 1;
}

@media screen and (max-width: 768px) {
    .container {
        /* 修改主容器为竖向排列 */
        flex-direction: column;
        /* 修改高度为自适应 */
        height: auto;
    }

    .main {
        /* 修改宽度为100% */
        width: 100%;
        /* 移除右侧边距 */
        margin-right: 0;
    }

    .left {
        /* 修改宽度为100% */
        width: 88%;
        /* 移除左侧边距 */
        margin-left: 0;
        /* 调整内边距 */
        padding: 0;
        margin-bottom: 64px;
    }

    .value-container {
        /* 调整布局为横向排列 */
        flex-direction: row;
        /* 调整高度 */
        height: auto;
        /* 调整底部边距 */
        margin-bottom: 10px;
    }

    #hzValue {
        /* 调整输入框宽度 */
        width: 80%;
    }

    #hz-unit {
        /* 调整字体大小 */
        font-size: 20px;
        /* 调整底部边距 */
        padding-bottom: 10px;
    }

    .default-button {
        border-radius: 22px;
        margin: 5px 5px;
    }

    div#blank-top {
        flex: 1;
    }

    .slider-container {
        margin-bottom: 10px;
    }
}

@media screen and (max-width: 480px) {

    /* 在屏幕宽度小于等于480px时的样式 */
    .default-button {
        /* 调整按钮宽度 */
        width: 80px;
        /* 调整字体大小 */
        font-size: 16px;
    }

    .slider {
        /* 调整高度 */
        height: 16px;
    }

    .slider::-webkit-slider-thumb {
        /* 调整宽度和高度 */
        width: 60px;
        height: 32px;
    }

    .slider::-webkit-slider-thumb:before {
        /* 调整字体大小 */
        font-size: 10px;
    }
}

a {
    text-decoration: none;
    color: #777777; 
}

.bottom-element {
    margin: 10px;
}