html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: sans-serif;
  background-color: #111;
  color: #eee;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header, footer {
  background: #222;
  padding: 1em;
  text-align: center;
}

nav a {
  margin: 0 10px;
  color: #f00;
  text-decoration: none;
}

main {
  flex: 1;
  padding: 2em;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.fb-page {
  width: 100% !important;
  max-width: 600px;
}

a {
  color: #FF9900;
}

section {
  max-width: 800px;
  width: 100%;
  background-color: #1a1a1a;
  padding: 1em;
  margin-bottom: 2em;
  border-radius: 10px;
  box-shadow: 0 0 10px #000;
}


#countdown {
  font-size: 1.5em;
  margin-bottom: 2em;
  text-align: center;
}

#countdown a {
  color: #FF0000;
  text-decoration: none;
}


.hidden {
  display: none;
}


/* Oprava horizontálního scrollování */
body {
  overflow-x: hidden;
}

/* Responzivní navigace – základy */
@media (max-width: 768px) {
  nav {
    flex-direction: column;
    align-items: center;
  }
  nav a {
    display: block;
    margin: 0.5em 0;
  }
  .center-title {
    font-size: 1.2em;
  }
}