examp.css

@import url('base.css');

html{
    scroll-behavior: smooth;
}

#cover{
    position: fixed;
    background:#eee;
    background-image: 
        radial-gradient(circle at 30% 30%,#ff000020 0 0,#00000000 50%),
        radial-gradient(circle at 60% 70%,#2983cc25 0 0,#00000000 50%);
    height: 100%;
    width: 100%;
    z-index: 6;
    top: 0;
    left: 0;
    color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 25px;
    text-shadow: 0 1px 3px #eee;
}
#cover.load{
    display: none;
}
html.load{
    overflow: unset;
}
html{
    overflow: hidden;
}
body{
    background: 
        radial-gradient(circle at 30% 30%,#e76f1920 0 0,#00000000 50%) fixed,
        radial-gradient(circle at 60% 70%,#14965c25 0 0,#00000000 50%) fixed;
}

/* #tit{
    width: calc(100% + 40px);
    background-color: #ececec90;
    position: fixed;
    height: 90px;
    backdrop-filter: blur(20px) saturate(1.3);
    display: block;
    margin-top: -20px;
    margin-left: -20px;
    padding: 30px 20px 0 40px;
    border-bottom: 2px solid #7f7f7f30;
    box-shadow: 0 3px 18px #00000020;
    z-index: 5;
    display: flex;
    justify-content: space-between;
} */

#tit{
    width: calc(100% - 50px);
    margin: 10px 25px;
    background-color: #f1f1f1ce;
    position: fixed;
    height: 60px;
    overflow: hidden;
    /* text-wrap:nowrap; */
    backdrop-filter: blur(20px) saturate(0.8);
    padding: 0px 0px 0 18px;
    border: 1px solid #7f7f7f30;
    box-shadow: 0 3px 18px #00000020;
    z-index: 5;
    display: flex;
    justify-content: space-between;
    border-radius: 10px;
    align-items: center;
    text-align: center;
}

#tit>.title{
    display: flex;
    align-items: center;
    text-wrap:nowrap;
}

#tit>.title>.btn{
    line-height: 1;
    padding-bottom: 6px;
    text-align: center;
    margin-left: 10px;
}

#tit>.title>p{
    font-size: 22px;
    margin: 0;
}

/* #tit>.title{
    font-size: 28px;
    margin: 0;
    padding-top: 5px;
} */

:root.mobile #tit>.title>p{
    font-size: 18px;
    /* padding-top: 10px; */
}

#sidebar{
    width: 300px;
    height: calc(100% - 98px);
    bottom: 10px;
    left: -320px;
    background-color: #f1f1f1ce;
    position: fixed;
    backdrop-filter: blur(20px) saturate(0.8);
    display: block;
    padding: 10px;
    border: 1px solid #7f7f7f30;
    box-shadow: 0 3px 18px #00000020;
    z-index: 4;
    border-radius: 10px;
    text-align: center;
    transition: 200ms cubic-bezier(1, 0, 0, 1);
    overflow-y: auto;
    overflow-x: hidden !important;
    scroll-behavior: smooth;
}

#sidebar.show{
    left: 25px;
}

#sidebar>.grid {
    display: grid;
    padding: 10px ;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    justify-content: center;
    grid-auto-flow: row dense;
    overflow: hidden;
}


#sidebar>.grid>.card {
    color: #000;
    /* font-size: 20px; */
    font-size: 17px;
    text-align: center;
    background: #efefefbb;
    border-radius: 10px;
    padding: 5px 8px;
    transition: 80ms;
    user-select: none;
    display: inline-block;
    /* margin: 2px 5px; */
    box-shadow: 0 1px 1.5px 0.5px #88888850;
    /* background-image: radial-gradient(circle at 50% 160%, #ff00000e 0 0,#00000000 70%); */
}

#sidebar>.grid>.card.enable {
    font-size: 20px;
    background-image: radial-gradient(circle at 50% 160%, #ff00000e 0 0, #00000000 70%);
}

#sidebar>.grid>.card:hover {
    background-color: #f4f4f4bb;
    box-shadow: 0 1px 1.5px 0.5px #99999940;
    filter: saturate(2);
}

#sidebar>.grid>.card:active {
    opacity: 0.6;
}

#musctrl{
    display: flex;
    align-items: center;
    /* flex-grow: 1; */
    overflow: hidden;
    text-wrap:nowrap;
    /* height: 100%; */
}

#musctrl>p{
    text-overflow: ellipsis;
    overflow: hidden;
}


#musctrl>.btn{
    background-color: #fcfcfcbc;
}

#footer{
    position: relative;
    bottom: 0;
    width: calc(100% - 50px);
    background-color: #222;
    color: #eee;
    padding: 25px 30px 20px 20px;
    margin: 10px 25px;
    border-radius: 10px;
    box-shadow: 0 1px 6px var(--sd);
}

#content{
    display: flex;
    /* flex-wrap: wrap; */
    flex-direction: column;
    align-items: center;
    padding-top: 200px;
    padding-bottom: 50px;
}

#music{
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 2px 20px #00000030;
    background-color: #f4f4f4;
    padding: 40px 10px;
    width: 50%;
    max-width: 600px;
    min-width: 450px;
    margin-bottom: calc(var(--ph) / 2);
}

:root.mobile #music{
    width: calc(100% - 30px);
    min-width: 170px;
}

#music>.ti{
    font-size: 80px;
    margin: 0;
}

:root.mobile #music>.ti{
    font-size: 50px;
}

#content>.text,
#content>.trad{
    max-width: 800px;
    margin: 0 0 calc(var(--ph) / 2) 0;
    transition: 200ms;
    background-color: #7f7f7f10;
    padding: 15px 20px;
    border-radius: 10px;
}

:root.mobile #content>.text,
:root.mobile #content>.trad{
    border-radius: 0 !important;
}

#content>.text>.tit{
    font-size: 40px;
    margin: 0;
}

#content>.text>.tit::before{
    content: '\2009';
    display: inline-block;
    white-space: pre;
    border-radius: 10px;
    margin-right: 9px;
    background-color: #2983cc9f;
}

#content>.text>.dtl{
    margin: 0 0 0 25px;
}

#content>.trad{
    white-space-collapse: preserve;
    word-break: keep-all;
    line-height: 30px;
    font-size: 19px;
    letter-spacing: 2px;
    font-weight: 500;
    background: 
    
    radial-gradient(circle at 10% 10%,#fe47221c 0 10%,#c5964610 40%),
    linear-gradient(175deg,#5cf9d710 0 60%,#10953210 70%);
    /* font-family: 'Courier New', Courier, monospace; */
    padding: 0 25px;
}

#content>.pic{
    width: calc(100% - 50px);
    max-width: 1100px;
    margin: 0;
    transition: 200ms;
    margin-bottom: calc(var(--ph) / 2);
}

#content>.pic.bf{
    transform: translateY(-100%);
}

#content>.pic.af{
    transform: translateY(100%);
}

#content>.pic>.link>.pic{
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 2px 15px var(--sd);
    position: relative;
    top: -40px;
}

#content>.pic>p{
    width: 100%;
    border-radius: 10px;
    /* position: relative; */
    height: 40px;
    padding: 10px;
    text-align: center;
    margin:0;
    /* top: 40px; */
    z-index: -1;
}

#content>.pic>.desp{
    font-size: 20px;
    margin: 0;
    position: relative;
    top: -100px;
    z-index: 1;
    color: #fff;
    text-shadow: #000 0 1px 7px;
}

#totop{
    position: fixed;
    right: 20px;
    bottom: 30px;
    background-color: #f5f5f5;
    width: 50px;
    height: 50px;
    box-shadow: 0 2px 10px #00000040;
    border-radius: 50%;
    /* text-align: center; */
    padding: 14px;
    transition: 100ms;
    background-clip: padding-box;
    z-index: 5;
}

#totop:hover{
    background-color: #e0e0e0;
}

#totop:active{
    background-color: #d2d2d2;
    transform: scale(0.95);
}


#tip {
    position: absolute;
    top: calc(100% - 30px);
    margin: 0;
    text-align: center;
    width: 100%;
    color: #222;
    /* text-shadow: 0 1px 4px #000; */
    opacity: 0;
    transition: 200ms,opacity 200ms 200ms;
    transform: translateY(-100%);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    height: 30px;
}

#tip.show{
    opacity: 1;
    transform: none;
}