:root {
    font-size: 18px;

    --theme-bg: rgb(24, 24, 24);

    --text-color: white;
    --button-primary: rgb(81, 81, 81);
    --button-secondary: rgb(243, 134, 51);
    --button-settings: rgb(72, 72, 72);
}

body {
    color: var(--text-color);
    background-color: var(--theme-bg);

    font-family: "IBM Plex", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    user-select: none;
    overflow: hidden;
}

button {
    font-family: "Montserrat", sans-serif;
    font-optical-sizing: auto;
    font-weight: 500;
    font-style: normal;
    font-variation-settings: "slnt" 0;
}

.history-container::-webkit-scrollbar {
    display: none;
}

.history-container {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow-y: scroll;

    padding: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: end;
    align-items: center;
    gap: 0.75rem;
    text-align: center;

    font-family: "IBM Plex", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    user-select: none;

    transform: scale(1.2);
    filter: blur(10px);
    opacity: 0;
    pointer-events: none;
    z-index: 200;

    transition: all 0.4s;
}

.history-container span {
    color: rgba(255, 255, 255, 0.6);
}

.history-container span strong {
    color: white;
}

body.history-open .history-container {
    transform: scale(1);
    filter: blur(0);
    opacity: 1;
    pointer-events: initial;
}

body.history-open .calculator {
    transform: scale(0.8);
    filter: blur(10px);
    opacity: 0.4;
}