:root{
    --dark-body: #4d4c5a;
    --dark-main: #141529;
    --dark-second: #79788c;
    --dark-hover: #323048;
    --dark-text: #f8fbff;

    --light-body: #f3f8fe;
    --light-main: #fdfdfd;
    --light-second: #c4c2c8;
    --light-hover: #edf0f5;
    --light-text: #151426;

    --blue:#0000ff;
    --white:#fff;

    --shadow:rgba(100,100,111,0.2) 0px 7px 29px 0px;

    --font-family:cursive;
}
.dark {
    --bg-body: var(--dark-body);
    --bg-main: var(--dark-main);
    --bg-second: var(--dark-second);
    --color-hover:var(--dark-hover);
    --color-txt:var(--dark-text);
}
.light {
    --bg-body: var(--light-body);
    --bg-main: var(--light-main);
    --bg-second: var(--light-second);
    --color-hover:var(--light-hover);
    --color-txt:var(--light-text);
}

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
html,
body{
    height: 100vh;
    display: grid;
    place-items: center;
    font-family: var(--font-family);
    background-color: var(--bg-body);
}

.calendar{
    height: max-content;
    width: max-content;
    background-color: var(--bg-main);
    border-radius: 30px;
    padding:20px;
    position: relative;
    overflow: hidden;
}

.light .calendar{
    box-shadow: var(--shadow);
}

.calendar-header{
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 25px;
    font-weight: 600;
    color:var(--color-txt);
    padding: 10px;
}

.calendar-body{
    padding: 10px;
}

.calendar-week-day{
    display: grid;
    grid-template-columns: repeat(7,1fr);
    font-weight: 600;
    height: 50px;
}

.calendar-week-day div{
    display: grid;
    place-items: center;
    color:var(--bg-second);
}

.calendar-days{
    display: grid;
    grid-template-columns: repeat(7,1fr);
    gap:2px;
    color:var(--color-txt);
}
.calendar-days div{
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
    position: relative;
    cursor:pointer;
    animation:to-top 1s forwards;
}
.month-picker{
    padding: 5px 10px;
    border-radius: 10px;
    cursor:pointer;
}
.month-picker:hover{
    background-color: var(--color-hover);
}
.year-picker{
    display: flex;
    align-items: center;
}
.year-change{
    height: 40px;
    width: 40px;
    border-radius: 50%;
    display: grid;
    place-items:center;
    margin: 0 10px;
    cursor: pointer;
}
.year-change:hover{
    background-color: var(--color-hover);
}
.calendar-footer{
    padding: 10px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}
.toggle{
    display: flex;
}
.toggle span{
    margin-right: 10px;
    color:var(--color-txt);
}
.dark-mode-switch{
    position:relative;
    width:48px;
    height: 25px;
    border-radius: 14px;
    background-color: var(--bg-second);
    cursor:pointer;
}
.dark-mode-switch-ident{
    width: 21px;
    height: 21px;
    border-radius: 50%;
    background-color: var(--bg-main);
    position: absolute;
    top:2px;
    left:2px;
    transition: left 0.2s ease-in-out;
}
.dark .dark-mode-switch .dark-mode-switch-ident{
    top:2px;
    left: calc(2px + 50%);
}
.calendar-days div span{
    position: absolute;
}
.calendar-days div:hover span{
    transition: width 0.2s ease-in-out, height 0.2s ease-in-out;
}
.calendar-days div span:nth-child(1),
.calendar-days div span:nth-child(3){
    width: 2px;
    height: 0;
    background-color: var(--color-txt);
}
.calendar-days div:hover span:nth-child(1),
.calendar-days div:hover span:nth-child(3){
    height: 100%;
}
.calendar-days div span:nth-child(1){
    bottom: 0;
    left: 0;
}
.calendar-days div span:nth-child(3){
    top: 0;
    right: 0;
}

.calendar-days div span:nth-child(2),
.calendar-days div span:nth-child(4){
    width: 0;
    height: 2px;
    background-color: var(--color-txt);
}

.calendar-days div:hover span:nth-child(2),
.calendar-days div:hover span:nth-child(4){
    width: 100%;
}
.calendar-days div span:nth-child(2){
    top: 0;
    left: 0;
}
.calendar-days div span:nth-child(4){
    bottom: 0;
    right: 0;
}
.calendar-days div:hover span:nth-child(2){
    transition-delay: 0.2s;
}
.calendar-days div:hover span:nth-child(3){
    transition-delay: 0.4s;
}
.calendar-days div:hover span:nth-child(4){
    transition-delay: 0.6s;
}
.calendar-days div.curr-date{
    background-color: var(--blue);
    color:var(--white);
    border-radius: 50%;
}
.calendar-days div.curr-date span{
    display: none;
}
.month-list{
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: var(--bg-main);
    padding: 20px;
    color: var(--color-txt);
    display: grid;
    grid-template-columns: repeat(3,auto);
    gap: 5px;
    transform: scale(1.5);
    visibility: hidden;
    pointer-events: none;
    transition: all 0.2s ease-in-out;
}
.month-list.show{
    transform: scale(1);
    visibility: visible;
    pointer-events: visible;
}
.month-list > div{
    display: grid;
    place-items: center;
}
.month-list > div > div {
    width: 100%;
    padding: 5px 20px;
    border-radius: 10px;
    text-align: center;
    cursor: pointer;
}
.month-list > div > div:hover {
    background-color: var(--color-hover);
}
@keyframes to-top {
    0%{
        transform: translateY(100%);
        opacity: 0;
    }
    100%{
        transform: translateY(0);
        opacity: 1;
    }
}