body {
  background-color: #0c0c0c;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

/* Navigationsleiste */
#navigation {
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1%;
  background-size: cover;
  position: fixed;
  top: 0;
  left: 0;
}

#icon img {
  width: 17%;
  height: auto;
}

#navigation #menu {
  list-style-type: none;
  display: flex;
  align-items: center;
  position: relative;
}

#navigation #menu li {
  padding-left: 4vw; /* Anpassung der relativen Einheit */
  padding-right: 1vw; /* Anpassung der relativen Einheit */
  position: relative;
}

#navigation #menu li a {
  color: white;
  font-weight: lighter;
  text-decoration: none;
  font-size: 1.3vw;
  position: relative;
  padding: 0.5vw 1vw; /* Anpassung der relativen Einheit */
  border-radius: 5vw;
  transition: background-color 0.05s ease, color 0.05s ease;
}

#navigation #menu li:hover a,
#navigation #menu #active a {
  background-color: rgb(171, 0, 0);
  text-decoration: none;
}

/* Diagramm: Buttons */
#grid-container1 #buttons {
  justify-content: center;
  padding-top: 4vw;
  padding-left: 4vw;
}

#button-alle {
  border: 0.2vw solid rgba(223, 222, 222, 0.9);
  background: rgba(223, 222, 222, 0.7);
  padding: 0.4vw 2vw;
  font-size: 1.1vw;
  color: black;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  width: 12vw;
  border-radius: 2vw;
}

#button-säugetiere, 
#button-amphibien,
#button-reptilien,
#button-vögel,
#button-fische,
#button-insekten {
  border: 2px solid rgba(223, 222, 222, 0.9);
  background: none;
  padding: 0.4vw 2vw;
  font-size: 1.1vw;
  color: rgba(223, 222, 222, 0.7);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  width: 12vw;
  border-radius: 2vw;
}

#button-säugetiere:hover, 
#button-amphibien:hover,
#button-reptilien:hover,
#button-vögel:hover,
#button-fische:hover,
#button-insekten:hover {
  color: black;
  background-color: rgba(223, 222, 222, 0.5);
}

#buttons button {
  margin-top: 1.5vw;
}

/* Grid */
.container {
  display: flex;
  align-items: center;
}

.buttons {
  display: flex;
  flex-direction: column;
  margin-right: 1vw;
}

#grid-container1 {
  display: grid;
  grid-template-columns: 30% 40% 30%;
  grid-template-rows: auto;
  column-gap: 0;
  row-gap: 0;
  padding-left: 1vw;
  padding-top: 5vw;
}

#item-1 {
  grid-row: 1; 
  grid-column: 2;
}

#item-2 {
  grid-row: 2; 
  grid-column: 2;
}

#item-3 {
  grid-row: 3; 
  grid-column: 2;
}

/* Bilder */
/* 2002 */
.image-container.year2002 img {
  width: 10vw;
  height: auto;
  padding-top: 0;
  margin-left: -1vw;
  margin-top: 1.5vw;
}

.image-container.year2002 {
  margin-top: 3vw;
  margin-left: 3vw;
  position: relative;
}

.image-container.year2002 #item-2 {
  margin-top: -3.5vw;
}

.image-container.year2002 #item-3 {
  margin-top: -3vw;
}

#item-1,
#item-2,
#item-3 {
  display: flex;
  justify-content: center;
}

#item-1.active,
#item-2.active,
#item-3.active {
  display: flex;
  justify-content: center;
  align-items: center;
}

#grid-container1 div.active {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 2012 */
.image-container.year2012 img {
  width: 11.3vw;
  height: auto;
  padding-top: 0;
  margin-left: -1.2vw;
  margin-top: 1.1vw;
}

.image-container.year2012 {
  margin-top: 1.4vw;
  margin-left: 2.5vw;
  position: relative;
}

.image-container.year2012 #item-2 {
  margin-top: -3.5vw;
}

.image-container.year2012 #item-3 {
  margin-top: -3vw;
}

/* 2022 */
.image-container.year2022 img {
  width: 12vw;
  height: auto;
  padding-top: 0;
  margin-left: -1.2vw;
  margin-top: 1vw;
}
  
.image-container.year2022 {
  margin-top: 0.5vw;
  margin-left: 2.5vw;
  position: relative;
}

.image-container.year2022 #item-2 {
  margin-top: -3.8vw;
}
  
.image-container.year2022 #item-3 {
  margin-top: -3vw;
}
  
/* Timeline */
.spacer {
  flex: 1;
}

.timeline {
  width: 40vw;
  margin-left: 31vw;
  position: fixed;
  top: 39vw;
}

#year-slider {
  cursor: pointer;
}
  
.timeline input[type="range"] {
  width: 100%;
}
  
.timeline-years {
  margin-top: 1vw;
  display: flex;
  justify-content: space-between;
}
  
.timeline-year {
  flex: 1;
  text-align: center;
  color: gray;
}
  
.timeline-year.active {
  color: lightgray;
  font-weight: bold;
}
  
.image-container {
  position: relative;
  display: inline-block;
}
  
.image-container .image-wrapper {
  position: relative;
  display: inline-block;
}
  
input[type="range"] {
  appearance: none;
  background-color: gray;
  height: 0.5vw;
  border-radius: 1vw;
}
  
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 1.2vw;
  height: 1.2vw;
  background-color: white;
  border-radius: 50%;
  border: none;
}
  
input[type="range"]::-moz-range-thumb {
  width: 1.2vw;
  height: 1.2vw;
  background-color: white;
  border-radius: 50%;
  border: none;
}

input[type="range"]::-ms-thumb {
  width: 1.2vw;
  height: 1.2vw;
  background-color: white;
  border-radius: 50%;
  border: none;
}
    
/* hover-box */
.image-container .image-wrapper .hover-box {
  position: absolute;
  border-radius: 5%;
  top: 0;
  left: 70%;
  width: 7.5vw;
  height: 8vw;
  padding: 0 1vw;
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  z-index: 2;
}
    
.image-container .image-wrapper:hover .hover-box {
  opacity: 1;
  top: 0;
}
    
.hover-box h3 {
  font-size: 1.3vw;
  margin-top: 0.3vw;
}
    
.image-container {
  font-size: 1.2vw;
}

.hover-item-1,
.hover-item-2,
.hover-item-3 {
  margin: 0;
}
    
.hover-item-1::before {
  content: "";
  display: inline-block;
  width: 0.8vw;
  height: 0.8vw;
  background-color: rgb(190, 190, 190, 0.5);
  border: 0.2vw solid rgb(175, 175, 175);
  margin-right: 1vw;
}
    
.hover-item-2::before {
  content: "";
  display: inline-block;
  width: 0.8vw;
  height: 0.8vw;
  background-color: rgb(255, 255, 225, 0.6);
  border: 0.2vw solid rgba(255, 255, 225, 1);
  margin-right: 1vw;
}
      
.hover-item-3::before {
  content: "";
  display: inline-block;
  width: 0.8vw;
  height: 0.8vw;
  background-color: rgb(255, 0, 0, 0.5);
  border: 0.2vw solid rgb(255, 0, 0, 1);
  margin-right: 1vw;
}
      
/* Legende */
#legend p {
  color: rgba(223, 222, 222, 0.9);
  font-size: 1.1vw;
}
  
#legend {
  padding-top: 13vw;
  padding-left: 4vw;
}
  
.legend-item-1::before {
  content: "";
  display: inline-block;
  width: 3vw;
  height: 0.9vw;
  background-color: rgb(190, 190, 190, 0.5);
  border: 0.3vw solid rgb(175, 175, 175);
  margin-right: 1vw;
  vertical-align: middle;
}
  
.legend-item-2::before {
  content: "";
  display: inline-block;
  width: 3vw;
  height: 0.9vw;
  background-color: rgb(255, 255, 225, 0.6);
  border: 0.3vw solid rgba(255, 255, 225, 1);
  margin-right: 1vw;
  vertical-align: middle;
}
  
.legend-item-3::before {
  content: "";
  display: inline-block;
  width: 3vw;
  height: 0.9vw;
  background-color: rgb(255, 0, 0, 0.5);
  border: 0.3vw solid rgb(255, 0, 0, 1);
  margin-right: 1vw;
  vertical-align: middle;
}