:root {
  --background-color: #000000;
  --darker-background-color: #243848;
  --accent-color: #5c5c5c;
  --text-color: #000000;
  --text-nav-color: #FFFFFF;
  --navbar-height: 80px;
}

* {
  margin: 0;
  padding: 0;
  font-size: 22px;
  font-family: "Segoe UI", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-color);
}

html {
  height: 100%;
}

body {
  height: 100%;
  margin: 0;
  font-family: "OpenSans", sans-serif;
  /*background-color: #000000;*/
}

.background-image{
  width:100%;
  height: 100%;
  filter: brightness(0.3)
}

nav {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0);
  height: 80px;

}

nav.logo {
  margin-left: 30px;
}

nav ul {
  height: 100%;
  display: flex;
  flex-direction: row;
  justify-content: flex-end;
  align-items: center;
}

nav li {
  list-style: none;
  height: 100%;
  width: 150px;
  text-align: center;
}

nav li:hover {
  background: var(--accent-color);
  border-radius: 0 0 10px 10px;
}

nav ul a {
  height: 100%;
  width: 100%;

  color: var(--text-nav-color);
  display: flex;
  align-items: center;
  justify-content: center;

  text-decoration: none;
}

nav.checkbox {
  display: none;
}

nav input[type="checkbox"] {
  display: none;
}

.toggle_button {
  width: 30px;
  height: 23px;

  position: absolute;
  top: 25px;
  right: 25px;

  display: none;
  flex-direction: column;
  justify-content: space-between;
}

.bar {
  height: 4px;
  width: 100%;
  background: var(--text-nav-color);

  border-radius: 100px;
}

.logo {
  position: absolute;
  top: 16px;
  left: 32px;
  height: 250%;
}

h1 {
  position: absolute;
  left: 300px;
  top: 300px;
  color: white;
  align-self: center;
  font-size: 50px;
  width: 900x;
  text-shadow: 5px 10px 5px rgba(0, 0, 0, 0.5);
}

h2 {
  text-align: center;
  font-size: 50px;
}

.highlight {
  font-size: 62px;
  color: rgb(132, 86, 83);
}

.text-center {
  text-align: center;
}

.description {
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  margin: 5%; /* negiert den Außenabstand */
}

.quarter-width {
  width: 25%;
}

.full-width {
  margin: auto;
  width: 80%;
}

.half-width {
  flex: 0 0 40%;     /* zwei Spalten */
  margin: 1%;        /* Zwischenraum */
  box-sizing: border-box;
}

.column-15p {
  width: 15%;
}

.column-5p {
  width: 5%;
}

.youtube {
  width: calc(100vw * 0.4);
  height: calc(56.52vw * 0.4);
}

.bandpicture {
  width: 100%;
  height: auto;
  display: block;
}

table {
  width: 60%;
  min-width: 50%;
  border-collapse: collapse;
  margin: 20px auto;
}
th, td {
  border: 1px solid #000;
  padding: 10px;
  text-align: left;
}
th {
  background-color: #f2f2f2;
}

@media (max-width: 850px) {

  * {
    font-size: 18px;
  }

  .logo {
    position: absolute;
    align-items: center;
    top: 40px;
    height: calc(100vw * 0.35);
  }

  h1 {
    width: 100%;
    position: absolute;
    left: 30px;
    margin: auto;
    text-align: left;
    font-size: 25px;
  }

  h2 {
    font-size: 30px;
  }

  .highlight {
    font-size: 30px;
  }

  .description {
    flex-direction: column;
    padding: 20px 30px;
    align-items: center;
    height: unset;
  }

  .half-width {
    margin: auto;
    width: unset;
  }

  .full-width {
    margin: auto;
    width: unset;
  }

  .youtube {
    width: calc(100vw * 0.9);
    height: calc(56.52vw * 0.9);
  }

  .toggle_button {
    display: flex;
  }

  nav ul {
    height: min-content;
    width: 100%;
    background: var(--background-color);

    display: none;
    position: absolute;
    top: var(--navbar-height);
  }

  nav li {
    height: min-content;
    width: 100%;
  }

  nav ul a {
    padding: 30px 0;
  }

  .expandable_li label {
    padding: 30px 0;
    cursor: pointer;
    display: block;
  }

  .concert_table {
    font-size: 10px;
  }

  #toggle_button:checked ~ ul {
    display: block;
  }
}