:root {
    --accent-color:pink;
    font-size: 2vmin;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    width: 100vw;
    height: 100vh;
    display: grid;
    place-items: center;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

.calendar {
    width: 90vw;
    user-select: none;
}

/* header */
.header{
    display: flex;
    justify-content:space-evenly;
    margin-bottom: 20px;
}

.header button{
    border: 2px solid;
    outline: none;
    background-color: transparent;
    cursor: pointer;
    padding: 0 10px;
    transition: all 0.3;
    font-size: 1.3rem;
}

.header button:hover {
    border: 2px solid var(--accent-color);
}

.currentDate{
    font: size 2rem;
    font-weight: bold;
    color: var(--acceent-color);
    text-align: center;
    min-width: 28vmin;
}

/* days */
.days{
    display: flex;
    justify-content: space-around;
    text-align: center;
    padding: 20px 0;
    font-size: 1.2rem;
    color: var(--accent-color)
}

/* dates */
.dates{
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.date{
    text-align: center;
    padding:20px 0;
    font-size: 1.6rem;
    transition: all 0.3s;
    border: 3px solid transparent;
    cursor: pointer;
    background-color: transparent;
    box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.1);
    color: rgba(0, 0, 0, 0.3);
}

.date.currentMonth {
    color:black;
}

.date:hover,
.date.selected{
    border-color: var(--accent-color);
}

.date.selected{
    background-color: var(--accent-color);
    color:white;
}

.date:hover{
    border-color:var(--accent-color);
}