/*OBECNÉ NASTAVENÍ STRÁNKY*/
body {
    margin: 0;
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(180deg, #0d011b, #140329);
    color: #fff;
  }


  /*HEADER*/
  header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background-color: rgba(0, 0, 0, 0.8);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    box-sizing: border-box;
    max-width: 100vw;
    overflow-x: hidden;
  }
  .uvodnilogo:hover{
      transform: scale(1.1); /*hover efekt pro logo*/
  }

  .uvodnilogo{
      transition: transform 0.3s ease /*přechod pro hover efekt*/
  }

  nav a { /*navbar menu, základní nastavení*/
    color: #fff;
    font-size: 1.1rem;
    text-decoration: none;
    margin-left: 2rem;
    font-weight: bold;
    transition: color 0.5s;
  }

  nav a:hover { /*navbar hover efekt*/
    color: #d40e0e;
  }


  /*UVOD*/
  .uvod {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(../background1.jpg);
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 2rem;
    text-align: center;
  }

  .uvod h1 { /*uvod nadpisy*/
    font-size: 4rem;
    text-transform: uppercase;
    color: #ffffff;
    margin-bottom: 1rem;
    transition: transform 0.7s ease;
  }

  .uvod h1:hover{ /*uvod nadpis hover efekt (zvetsovani)*/
      transform: scale(1.075);
  }

  .uvod .date { /*uvod datum*/
    font-size: 1.75rem;
    color: #f70707;
    margin-bottom: 0.1rem;
    font-style: bold;
  }

  .uvod p { /*text*/
    font-size: 1.2rem;
    max-width: 600px;
    color: #dcdcdc;
  }

/*RESPONZIBILITA */
  @media (max-width: 768px) {
    /*uvod*/
    .uvod h1 {
      font-size: 2.5rem;
    }
    /*navbar*/
    nav a {
      margin-left: 1rem;
      align-items: center;
      text-align: center;
    }
    /*header*/
    header {
      flex-direction: column;
      gap: 1rem;
    }
    /*footer*/
    .footer-content { /*zarovnání na střed*/
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer-contact,
.footer-map {/*mapa na mobil*/
  width: 100%;
  max-width: 400px;
}
.footer-map iframe {
  height: 250px;
}
  }


/*POZVÁNKA*/

.pozvanka { /*nastaveni sekce*/
background-color: #1d1d1d;
padding: 4rem 2rem;
text-align: center;
color: #ddd;
}

.pozvanka h2 { /*nadpis*/
color: #ffffff;
font-size: 2.2rem;
margin-bottom: 1rem;
text-transform: uppercase;
}

.pozvanka p { /*text*/
max-width: 700px;
margin: 1rem auto;
font-size: 1.1rem;
line-height: 1.7;
}

.pozvanka-button { /*tlacitko*/
display: inline-block;
margin-top: 2rem;
padding: 1rem 2.5rem;
background-color: #d40e0e;
color: #fff;
border-radius: 6px;
font-weight: bold;
text-decoration: none;
transition: background-color 0.3s ease;
}

.pozvanka-button:hover { /*tlacitko hover efekt - zmena pozadi*/
background-color: #960707;
}

/*PROGRAM a PREDNASEJICI SEKCE*/
  .program-section { /*cela sekce*/
background-color: #1d1d1d;
padding: 4rem 2rem;
text-align: center;
}

.program-section h2 { /*nadpis*/
color: #ffffff;
font-size: 2.5rem;
margin-bottom: 0rem;
text-transform: uppercase;
letter-spacing: 2px;
}

.program-grid { /*sekce s kartami*/
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 2rem;
max-width: 1000px;
margin: 0 auto;
margin-top: 2rem;
}

.program-item { /*jednotlivé karty*/
background-color: rgba(0, 0, 0, 0.4);
border: 2px solid #d40e0e;
padding: 2rem;
border-radius: 10px;
transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.program-item:hover {/*hover efekt karet*/
transform: scale(1.05);
box-shadow: 0 0 20px rgba(255, 0, 0, 0.4);
}

.program-item h3 { /*podnadpisy*/
color: #d40e0e;
margin-bottom: 0rem;
font-size: 1.45rem;
}

.program-item p { /*text*/
color: #ccc;
font-size: 1rem;
line-height: 1.6;
}
/*sekce s hosty/prednasejicimi*/
.prednasejici-section{
  background-blend-mode: darken;
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(../background1.jpg);
padding: 4rem 2rem;
text-align: center;
}

.prednasejici-section h2{ /*nadpis*/
  color: #ffffff;
font-size: 2.5rem;
margin-bottom: 0rem;
text-transform: uppercase;
letter-spacing: 2px;
}

.prednasejici-section h3{ /*podnadpis*/
  font-weight: bold;
}


/* O NÁS */
.onas {
background-blend-mode: darken;
background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(../background1.jpg);
padding: 4rem 2rem;
text-align: center;
color: #ccc;
}

.onas h2 {
color: #ffffff;
font-size: 2.2rem;
margin-bottom: 1.5rem;
text-transform: uppercase;
}

.onas p {
max-width: 750px;
margin: 0 auto 1rem;
font-size: 1.1rem;
line-height: 1.7;
}


/*FORMULÁŘ*/
.registrace { /*nastavení sekce*/
background-color: #1d1d1d;
padding: 4rem 2rem;
text-align: center;
}

.registrace h2 { /*nadpis*/
color: #ffffff;
font-size: 2.2rem;
margin-bottom: 2rem;
text-transform: uppercase;
letter-spacing: 2px;
}

.formular {
max-width: 600px;
margin: 0 auto;
display: flex;
flex-direction: column;
gap: 1rem;
}

.formular label { /*text ve formulari*/
color: #ffffff;
text-align: left;
font-weight: bold;
}

.formular input,.formular select,.formular textarea { /*kolonky ve formulari*/
padding: 0.8rem;
border: 1px solid #333;
background-color: #1a1a1a;
color: #fff;
border-radius: 6px;
font-family: inherit;
font-size: 1rem;
transition: border-color 0.3s ease;
}

.formular input:focus,.formular select:focus,.formular textarea:focus { /*kolonka kdyz je aktivni/rozkliklá*/
border-color: #d40e0e;
outline: none;
}

.formular button { /*tlacitko k formulari*/
background-color: #d40e0e;
color: #fff;
border: none;
padding: 1rem;
font-size: 1rem;
border-radius: 6px;
cursor: pointer;
transition: background-color 0.5s ease;
}

.formular button:hover {
background-color: #960707;
}


/*PARTNEŘI*/
.partneri { /*sekce*/
background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(../background1.jpg);
padding: 4rem 2rem;
text-align: center;
}

.partneri h2 {
color: #ffffff;
font-size: 2.2rem;
margin-bottom: 2rem;
text-transform: uppercase;
letter-spacing: 2px;
}

.partneri-ikony { /*partneri loga*/
display: flex;
flex-wrap: wrap;
justify-content: center;
gap: 2rem;
}

.partner { /*jednotlive nastaveni ikon partneru*/
width: 200px;
height: 200px;
display: flex;
justify-content: center;
align-items: center;
border-radius: 8px;
transition: transform 0.3s ease;
filter: brightness(0.8);
}

.partner:hover { /*hover efekt zvetseni pro ikony*/
transform: scale(1.1);
filter: brightness(1);
}

.partner img {
max-width: 100%;
max-height: 100%;
object-fit: contain;
display: block;
}


/*FOOTER*/
.footer {
background-color: rgb(22, 22, 22);
color: #ccc;
padding: 2rem 2rem 1rem;
font-size: 0.95rem;
}

.footer-content { /*nastaveni footer kontentu (velikost textu, jeho zarovnani atd.)*/
display: flex;
font-size: 1.2rem;
justify-content: space-between;
flex-wrap: wrap;
gap: 2rem;
max-width: 1200px;
margin: 0 auto;
margin-top: 0.8rem;
}

.footer-contact, /*kontakty a mapa*/
.footer-map {
flex: 1 1 300px;
}

.footer-contact h3,/*nadpis mapy a kontaktu*/
.footer-map h3 {
color: #d40e0e;
margin-bottom: 1rem;
font-size: 1.9rem;
}

.footer-contact p { /*text u kontaktu*/
margin: 0.3rem 0;
}

.footer-bottom { /*spodní sekce footeru s právy*/
text-align: center;
padding-top: 2rem;
border-top: 1px solid rgba(255, 255, 255, 0.05);
margin-top: 2rem;
color: #666;
}

.footer-map iframe { /*nastaveni hover efektu mapy (ztmavnuti)*/
filter: grayscale(100%) brightness(70%) contrast(120%);
border-radius: 10px;
transition: filter 0.3s ease;
}

.footer-map iframe:hover {/*nastaveni hover efektu mapy (ztmavnuti)*/
filter: grayscale(0%) brightness(100%) contrast(100%);
}