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

body{
    background:#111;
    color:white;
    font-family:Arial, sans-serif;
}

/* ===== MENU ===== */

nav{
    background:black;
    display:flex;
    justify-content:flex-end; /* menu vpravo */
    padding:20px 50px;
    position:sticky;
    top:0;
    z-index:1000;
    border-bottom:2px solid darkred;
}

nav ul{
    list-style:none;
    display:flex;
    gap:30px;
}

nav ul li{
    position:relative;
}

nav ul li a{
    color:white;
    text-decoration:none;
    font-weight:bold;
    padding:10px;
    display:block;
    transition:0.3s;
}

nav ul li a:hover{
    color:red;
}

/* podsložky */

nav ul li ul{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    background:#1a1a1a;
    min-width:220px;
    border:1px solid darkred;
}

nav ul li:hover ul{
    display:block;
}

nav ul li ul li{
    width:100%;
}

/* ===== HERO ===== */

.hero{
    height:100vh;
    background:
    linear-gradient(rgba(0,0,0,.6),rgba(80,0,0,.6)),
    url("hero.jpg");
    
    background-size:cover;
    background-position:center;

    display:flex;
    justify-content:center;
    align-items:center;
    text-align:center;
}

.hero h1{
    font-size:70px;
    color:#ff2d2d;
    text-shadow:0 0 20px black;
}

/* ===== SEKCE ===== */

section{
    padding:80px 10%;

}



/* ===== KARTY ===== */

.box{
    background:#1a1a1a;
    padding:25px;
    border-left:4px solid red;
    margin-bottom:25px;
    border-radius:10px;
}


/* font */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Roboto:wght@300;400;700&display=swap');

body{
    background:#111;
    color:white;
    font-family:'Roboto', sans-serif;
    padding-top:90px; /* odsazení kvůli menu */
}


/* menu nahoře */
nav{
    position:fixed;
    top:0;
    left:0;
    width:100%;

    background:black;
    display:flex;
    justify-content:flex-end;

    padding:20px 50px;

    border-bottom:2px solid darkred;
    z-index:1000;
}

/* hlavní nadpis */
h1{
    color: red;
    font-size:50px;
    text-align:center;
    background:#111;
    text-align: center;
    font-family: arial, sans-serif;
}
/* menší nadpisy */
h2{
    color:red;
    font-size:20px;
    border-left:4px solid red;
    padding-left:15px;
}
/* ===== TABULKA ===== */

table{
    width:600px;

    border-collapse:collapse;

    background:#111;

    box-shadow:0 0 25px rgba(255,0,0,.2);
}


th{
    background:#7a0000;

    font-size:22px;
    padding:18px;
}


td{
    padding:18px;

    text-align:center;

    border:1px solid #444;

    font-size:20px;
}


tr:hover{
    background:#250000;
}
/* ===== FOOTER ===== */

footer{
    background:black;
    text-align:center;
    padding:30px;
    border-top:2px solid darkred;
}