@font-face {
  font-family: pixelar;
  src: url("fonts/4d8bd4f0-ce40-4f34-a0b8-49bc51024ea8.woff2") format("woff2"),
       url("fonts/9c200a14-d264-405c-86bf-d27b840e86be.woff") format("woff");
}

/* Banner styling */
#banner {
  font-family: pixelar, sans-serif;
  text-align: center;
  padding: 10px 0;
  background-color: #222222;
  margin-bottom: 20px;
}
#banner a {
  margin: 0 10px;
  text-decoration: none;
  color: #FFFFFF;
  padding: 5px 10px;
  border-radius: 4px;
  transition: background-color 0.2s;
}
#banner a:hover {
  background-color: #666666;
}
#banner a.active {
  background-color: #FFD700;
  color: #000000;
}

/* General page styles */
body {
  font-family: Arial, sans-serif;
  background-color: #000000;
  color: #FFFFFF;
  text-align: center;
  margin: 20px;
}
.circle {
  max-width: 500px;
  margin: 0 auto;
}
.section {
  margin: 30px auto;
  padding: 20px;
  border: 1px solid #666666;
  border-radius: 8px;
  background-color: #333333;
  max-width: 500px;
  text-align: left;
}
.section h2 {
  text-align: center;
  margin-top: 0;
  color: #FFFFFF;
}

/* Button groups styling */
.button-group {
  margin: 10px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  row-gap: 10px;
}
.group-label {
  margin-right: 10px;
  font-size: 16px;
  min-width: 90px;
  text-align: right;
}
.button-group button {
  margin: 0 5px;
  padding: 10px 15px;
  font-size: 16px;
  border: 1px solid #666666;
  border-radius: 4px;
  background-color: #555555;
  color: #FFFFFF;
  cursor: pointer;
  transition: background-color 0.2s;
}
.button-group button:hover {
  background-color: #666666;
}
.button-group button.active {
  background-color: #FFD700;
  color: #000000;
}
.button-group button:disabled {
  opacity: 0.6;
  cursor: default;
}

/* Table styling for chords page */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}
table th, table td {
  border: 1px solid #666666;
  padding: 8px;
  text-align: center;
}
table th {
  background-color: #555555;
}

/* Convert button and section styles for fifths page */
.button-container {
  margin-top: 20px;
  text-align: center;
}
#convertBtn {
  background-color: #FFD700;
  color: #000000;
  padding: 10px 20px;
  font-size: 16px;
  border: 1px solid #666666;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}
#convertBtn:hover {
  background-color: #e6c200;
}
.result {
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  background-color: #FFD700;
  color: #000000;
  padding: 10px;
  border-radius: 4px;
  margin: 10px auto;
  display: inline-block;
}
#relativeKeySection {
  display: none;
  text-align: center;
}