body {
  margin: 0;
  border-width: 0;
  box-sizing: border-box;
  height: 100vh;
  font-family: Lato, sans-serif;
}

.legend-box {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background-color: white;
  border: 1px solid gray;
  padding: 10px;
  z-index: 1000;
  box-shadow: 0 0 10px rgba(0 0 0 / 10%);
  font-size: 1em;
  width: 150px;
}

.legend-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px;
  margin-bottom: 3px;
  background-color: rgba(255 255 255 / 80%);
}

.legend-color {
  width: 20px;
  height: 20px;
  margin-right: 10px;
  background-color: gray; /* default color */
}

.legend-item.highlight {
  background-color: yellow;
  font-weight: bold;
}

.legend-title {
  font-size: 1.05rem;
  font-weight: 300;
  margin-bottom: 0.5rem;
  text-align: left;
}

.title {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh; 
  background: url('../image/background.jpg') no-repeat center fixed;
  color: white;
  text-align: center;
  font-family: Lato, sans-serif;
  z-index: 1;
}

.title::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0 0 0 / 50%); 
  z-index: -1; 
}

.title h1 {
  font-size: 4rem; 
  font-weight: 350;  
  margin: 0 2rem;
  margin-bottom: 1rem;
  opacity: 1; 
}

.title p {
  font-size: 2rem; 
  font-weight: 300;
  margin: 0 2rem;
  opacity: 1; 
}

.title h1, .title p {
  opacity: 1; 
  will-change: opacity; 
}

.intro {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh; 
  background: url('../image/intro.jpg') no-repeat center fixed;
  color: white;
  text-align: center;
  font-family: Lato, sans-serif;
  z-index: 1;
}

.intro::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0 0 0 / 50%); 
  z-index: -1; 
}

.intro h1, .intro h2,.intro p {
  opacity: 1; 
  will-change: opacity;
}

.intro h1 {
  width: 35%;
  font-size: 2.5rem;
  font-weight: 350;
  color: white;
  margin: 0 auto;
  margin-bottom: 1rem;
  padding-bottom: 10px;
  opacity: 1;
}

.intro h2 {
  width: 35%;
  font-size: 2rem;
  font-weight: 350;
  color: white;
  margin: 0 auto;
  margin-bottom: 1rem;
  padding-bottom: 10px;
  opacity: 1;
}

.intro p {
  width: 35%;
  font-size: 1.2em;
  font-weight: 300;
  color: white;
  line-height: 1.6;
  opacity: 1;
  margin: 0 auto;
}

.slide-section {
  display: flex;
  flex-direction: column; 
  height: auto; 
}

.slide {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  height: 100vh;
  width: 30%; 
  background-color: white;
  color: black;
  position: relative;
  z-index: 2;
}

.slide h2 {
  font-size: 1.5rem;
  font-weight: 350;
  color: black;
  margin-bottom: 1rem;
}

.slide p {
  font-size: 1rem;
  font-weight: 300;
  color: black;
  line-height: 1.6;
}

#text {
  align-items: left;
  width: 35%; 
  overflow-y: auto;
  padding: 5%; 
  box-sizing: border-box; 
  line-height: 2rem;
}

.map-container {
  width: 65%; 
  height: 100vh;
  position: fixed;
  right: 0; 
  top: 0; 
}

#map {
  width: 100%; 
  height: 100%; 
}