* {
    margin: 0; 
    padding: 0;
}

:root {
    --sz-p: clamp(1.3rem, 0.5vw + 1rem, 4rem);
}

/* FONT SIZE CLASSES */
.sz-main-header {font-size: clamp(1.7rem, 4.5vw + 1rem, 5.5rem);}
.sz-sub-header {font-size: clamp(1.5rem, 2vw + 1rem, 5rem);}
.sz-text {font-size: clamp(1.1rem, 0.5vw + .8rem, 4rem); line-height: 1.8;}
.mezinadpis {
    font-size: clamp(1.3rem, .7vw + 1.8rem, 5rem); 
    font-weight: bold; color: var(--pink); 
    display: block; margin-top: 2rem; 
    margin-bottom: 1rem; 
}

.italic-block {
    font-style: italic;
    border-left: 2px solid var(--pink);
    font-weight: bold;
    padding-left: 3rem;
}

/* HEADER */
header {
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.logo-img {
    height: 5.5vh;
    padding-block: 1rem;
    padding-right: 2rem;
}

.web-name {
    font-size: clamp(0.5rem, 1vw + 1rem, 3rem);
    font-weight: bold;
}

.left-bar {
    padding-left: 3vw;
}


/* NAVIGACE */
nav {
    padding-right: 3vw;
}

ul {
    display: flex;

    list-style-type: none;
   /* border-inline: 1px solid var(--black); */
}

li {
    padding-inline: 1.3vw;
    font-size: clamp(1.2rem, .9vw + .13rem, 2rem);
    text-transform: uppercase;
    /* border-inline: 1px solid var(--black); */
    font-weight: bold;
    letter-spacing: .2vw;
}

a {
    text-decoration: none;
    color: var(--black);
    border-bottom: 2px solid transparent;
}

li a:hover {
    color: var(--pink);
    transition: 0.2s;
}

#mobile-menu {
    display: none;
}

#burger {
    display: none;
    height: calc(0.2vw + 2rem);
}

#cross {
    display: none;
    height: calc(0.2vw + 2rem);
}

@media (max-width:900px) {
    .header {
        justify-content: space-evenly;
    }

    .desktop-menu { 
        display: none;
    }

    #burger {
        display: none;
        padding-right: 3vw;
    }

    #cross {
        display: block;
        padding-right: 3vw;
    }

    #mobile-menu {
        display: block;
        padding-inline: 0;
        padding-bottom: 10px;
        background-color: var(--grey); 
    }
    
    #mobile-menu ul {
        flex-direction: column;
        text-align: center;    
    }
    
    #mobile-menu ul li {
        padding-block: 1.5rem;
    }

    #mobile-menu ul li:hover {
        background-color: var(--grey-light);
    }

    #mobile-menu ul li a:hover {
        color: var(--pink);
        transition: 0s;
    }
}


/* MAIN */
main {
    margin: auto;
    max-width: calc(42 * (0.4vw + 1rem));
    background-color: var(--grey-light);
    padding-bottom: 3rem;
    position: relative;
}

article {
    max-width: calc(35 * (0.4vw + 1rem));
    width: 95%;
    margin: auto;
}

h1 {
    font-size: clamp(3rem, 1vw + 3.4rem, 6vw);
    color: var(--pink);
    padding-top: calc(.8rem + 1.8vw);
}

h2 {
    font-size: clamp(1rem, .7vw + 1.8rem, 3rem);
    font-weight: bold;
    color: var(--grey-dark);
    padding-top: calc(.4rem + .4vw);
}

h3 {
    font-size: var(--sz-p);
    color: var(--grey-dark);
    margin-top: calc(0.4rem + .4vw);
    margin-bottom: .5vw;
}

p {
    color: var(--grey-dark);
    margin-top: calc(0.3rem + .4vw); /* pozor! text je jeste rizeno class .sz-text v tomto stylesheetu */
    font-size: clamp(1.1rem, 0.5vw + .8rem, 4rem); line-height: 1.8;
}

/* FOOTER */
footer p {
    padding-block: 2rem;
    margin-block: 0;
}

#myBtn {
    display: none;
    z-index: 200;
    background-size: cover;
    width: 60px;
    height: 60px;
    cursor: pointer; 
    border: none;
    background-color: var(--pink);
    bottom: 40px;
    position: fixed;
    right: 10px;
    color: white;
    font-weight: bold;
    font-size: 1.3rem;
    border-radius: 30px 0px 0 30px;
}

#myBtn:hover {
    width: 100px;
    transition: 0.5s;
}