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

body {
    inset: 0;
    z-index: -10;
    height: 100%;
    width: 100%;
    padding: 6rem 1.25rem;
    /* py-24 (6rem), px-5 (1.25rem) */
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(125% 125% at 50% 10%,
            #000 40%,
            #6633ee 100%);
    background-color: white;
    /* light mode style (will be toggled from JS)*/
    /* background: radial-gradient(
              125% 125% at 50% 10%, 
              #ffffff 40%, 
              #6633ee 100%
            ); */
    font-family: sans-serif;
    min-height: 100vh;
}

.container {
    text-align: center;
    padding: 1.2rem;
    height: 80vh;
    width: 100%;
}

h1 {
    color: antiquewhite;
    backdrop-filter: blur(20px);
    backdrop-filter: drop-shadow(4px 4px 10px blue);
    font-weight: 100;
}

.board {
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    width: 100%;
    margin-top: 1.3rem;
    gap: 0.8rem;

}

.list {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 6px;
    width: 35%;
    min-height: 400px;
}

.list h2 {
    color: rgba(194, 189, 189, 0.884);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: lighter;
}

.list:hover {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.card {
    color: rgba(245, 245, 245, 0.797);
    margin-bottom: 10px;
    border-radius: 8px;
    cursor: grab;
    padding: 1.25rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
    background: rgba(17, 22, 210, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.card:active {
    cursor: grabbing;
    transform: scale(1.05);
    box-shadow: 0 4px 4px rgba(0, 0, 0, 0.2);
}

.card:hover {

    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.add-item-btn {
    color: rgba(245, 245, 245, 0.797);
    border-radius: 0.6rem;
    cursor: pointer;
    padding: 0.7rem;
    background: rgba(17, 22, 210, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(20px);
    width: 30%;
    margin-top: 4.5rem;
}

.add-item-btn:active {
    transform: scale(1.05);
    transition: all ease-in 0.01s;
}

.add-item-btn:hover {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.list.over {
    background: rgba(255, 255, 255, 0.10);
}

@media (max-width:768px) {
    .container {
        overflow-y: auto;
    }

    /* bg of the scroll bar */
    .container::-webkit-scrollbar-track {
        background-color: transparent;
        border-radius: 4px;
    }

    /* draggable part of the scroll bar */
    .container::-webkit-scrollbar-thumb {
        background-color: transparent;
        border-radius: 4px;
    }

    .container::-webkit-scrollbar-thumb:hover {
        background-color: transparent;
    }

    .board {
        flex-direction: column;
        align-items: center;
    }

    .list {
        width: 80%;
        margin-bottom: 20px;
    }
}