/*   === BUTTON MOVE (HAMBURGER) NAVIGATION ===
        ------------------------------------      */
.btn_mv {
    width: 24em;
    height: 3em;
    overflow: hidden;
    justify-content: center;
    align-items: center;
    margin: 0.25em;
    position: relative;
}
.btn_mv__two_sides {
    cursor: pointer;
    transition: transform 0.85s cubic-bezier(.7, 0, .3, 1);
    width: 24em;
    height: 6em;
    position: relative;
}
.btn_mv__two_sides:hover {
    transform: translateY(-4rem);
}
.btn_mv__side {
    box-sizing: border-box;
    position: absolute;
    display: inline-block;
    height: 3em;
    width: 24em;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding-top: 1.0em;
    font-weight: 500;
    transform: translateX(-50%);
}
.btn_mv__side_one {
    top: 0;
    font-family: "Instrument Sans", sans-serif;
    font-weight: 500;
    background: transparent;
    color: hsla(var(--clr-black) / 0.74);
    /* box-shadow: inset 0 0 0 1px hsla(var(--clr-black) / 0.20); */
}
.btn_mv__side_two {
    top: 4rem;
    font-family: "Instrument Sans", sans-serif;
    font-weight: 500;
    background: hsla(var(--clr-black) / 1);
    color: hsla(var(--clr-1) / 0.90);
    /* box-shadow: inset 0 0 0 1px hsla(var(--clr-black) / 0.90); */
}



/*   === BUTTON MOVE (KAPITOLA) MINI MENU ===
        ----------------------------------      */
.btn_mv2_cover {
    display: block;
    /* border: 1px solid fuchsia;  /* D E L E T E */
}

.btn_mv2 {
    width: 24em;
    height: 2em;
    overflow: hidden;
    justify-content: center;
    align-items: center;
    margin: 0;
    position: relative;
}
.btn_mv2__two_sides {
    cursor: pointer;
    transition: transform 0.6s cubic-bezier(.7, 0, .3, 1);
    width: 24em;
    height: 2em;
    position: relative;
}
.btn_mv2__two_sides:hover {
    transform: translateY(-2rem);
}
.btn_mv2__side {
    box-sizing: border-box;
    position: absolute;
    display: inline-block;
    height: 2em;
    width: 24em;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding-top: 0.5em;
    font-weight: 500;
    /* transform: translateX(-50%); */
}
.btn_mv2__side_one {
    width: 24rem;
    top: 0;
    font-family: "Instrument Sans", sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    background: transparent;
    color: hsla(var(--clr-black) / 0.50);
    /* box-shadow: inset 0 0 0 1px hsla(var(--clr-black) / 0.20); */
}
.btn_mv2__side_two {
    width: 24rem;
    top: 2rem;
    font-family: "Instrument Sans", sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    /* background: hsla(var(--clr-black) / 0.90); */
    background: transparent;
    color: hsla(var(--clr-1) / 1);
    /* box-shadow: inset 0 0 0 1px hsla(var(--clr-black) / 0.90); */
}



/*   === BUTTON ROTATE (INTRO) ===
        -----------------------      */
.btn_rotate {
    width: 11em;
    justify-content: center;
    align-items: center;
    margin: 1em;
}
.btn_rotate__two_sides {
    color: hsla(var(--clr-white) / 0.90);
    cursor: pointer;
    transition: all 0.85s cubic-bezier(.7, 0, .3, 1);
    transform-style: preserve-3d;
    transform-origin: 100% 50%;
    width: 11em;
    height: 3em;
}
.btn_rotate__two_sides:hover {
    transform: rotateX(-90deg);
}
.btn_rotate__side {
    box-sizing: border-box;
    position: absolute;
    display: inline-block;
    height: 3em;
    width: 11em;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding-top: 1em;
}
.btn_rotate__side_one {
    font-family: "Instrument Sans", sans-serif;
    font-weight: 500;
    background: hsla(var(--clr-black) / 0.90);
    color: hsla(var(--clr-white) / 0.90);
    transform: rotateX(90deg) translate3d(0, 0, -1.5em);
    /* box-shadow: inset 0 0 0 1px hsla(var(--clr-black) / 0.90); */
    border: 1px solid hsla(var(--clr-black) / 0.90);
}
.btn_rotate__side_two {
    font-family: "Instrument Sans", sans-serif;
    font-weight: 500;
    background: hsla(var(--clr-0) / 0.10);
    color: hsla(var(--clr-black) / 0.74);
    /* box-shadow: inset 0 0 0 1px hsla(var(--clr-black) / 0.74); */
    border: 1px solid hsla(var(--clr-black) / 0.74);
    transform: translate3d(0, 0, -1.5em);
}



/*   === BUTTON ARROW === 
        --------------      */
.btn_arrow_black {
    display: inline-block; /* POZOR: Aby transformácie, element nie 'inline' */
    margin-left: 0.5em;
    animation: arrowNudge 1.2s ease-in-out infinite;
    color: hsla(var(--clr-black) / 1.00);
}
.btn_arrow_white {
    display: inline-block; /* POZOR: Aby transformácie, element nie 'inline' */
    margin-left: 0.5em;
    animation: arrowNudge 1.2s ease-in-out infinite;
    color: hsla(var(--clr-white) / 1.00);
}
/* DEF ANIMÁCIA: Vodorovný posun */
@keyframes arrowNudge {
    0%, 100% {
        transform: translateX(0); /* Start + End, pozícia */
    }
    50% {
        transform: translateX(4px); /* Stred, posun o 4 px doprava */
    }
}