body {
  font-family: 'Segoe UI', sans-serif;
  /* background-color: #f4f8f6; */
  background-color: #fdfaf6;
  color: #333;
  padding: 20px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  align-items: center;
}
main,
.info-box,
.word-list{
  width: 100%;
  max-width: 800px;
  text-align: left;
}

/* h1 {
  text-align: center;
  color: #2c3e50;
} */
 h1 {
  font-family: 'Georgia', serif;
  font-size: 2em;
  color: #4a4a4a;
}
h2{
  color: #4a4a4a;
}

.info-box {
  background-color: #e8f0ee;
  border-left: 5px solid #7fb3a9;
  padding: 15px;
  margin-bottom: 20px;
}

.button-group {
  text-align: center;
  margin-bottom: 20px;
}

.button-group button {
  margin: 5px;
  padding: 10px 15px;
  background-color: #7fb3a9;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.button-group button:hover {
  background-color: #5e9c8f;
}

.word-list {
  background-color: #fff;
  border: 1px solid #ccc;
  padding: 15px;
  border-radius: 5px;
}
.word-list textarea{
  width: 100%;
  height: auto;
  padding: 12px;
  /* font-size: 1rem; */
  border: none;
  box-sizing: border-box;
  margin-top: 12px;
}
.example {
  display: block;
  margin-top: 4px;
  font-size: 0.95em;
  color: #555;
  font-style: italic;
}
.highlight {
  font-weight: bold;
  color: #2c7a7b;
  background-color: #e0f7f5;
  padding: 2px 4px;
  border-radius: 3px;
}

footer {
  width: 100%;
  max-width: 800px;
  margin-top: 40px;
  padding: 20px 15px;
  background-color: #d1e2de;
  text-align: center;
  font-family: 'Yomogi', sans-serif;
  font-size: 0.95em;
  border-top: 1px dashed #ccc;
  color: #444;
}

@media screen and (max-width:480px){
  body{
    padding: 10px;
  }
  .info-box,
  .word-list,
  footer,
  .button-group{
    max-width: 100%;
    padding: 12px;
    font-size: 0.95em;
  }
  h1{
    font-size: 1.4em;
    line-height: 1.3;
  }
  .button-group{
    flex-direction: column;
    align-items: center;
  }
  .button-group button{
    width: 100%;
    max-width: 300px;
    font-size: 1em;
  }
  .example{
    font-size: 0.9em;
  }
  .highlight{
    padding: 2px 3px;
    font-size: 0.95em;
  }
  footer{
    font-size: 0.85em;
    text-align: center;
  }
}