.playPauseButton {
    background-color: #3399cc;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    letter-spacing: 0.7px;
    font-size: 14px;
    line-height: 14px;
    font-weight: 500;
    text-transform: uppercase;
    border: none;
    transition: all ease 0.50s;
    display: inline-block;
    text-decoration: none;
    text-align: center;
}

.btn-pdf {
    background-color: #6633cc;
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    letter-spacing: 1px;
    font-size: 16px;
    line-height: 20px;
    font-weight: 700;
    text-transform: uppercase;
    border: none;
    transition: all ease 0.3s;
    display: inline-block;
    text-decoration: none;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); /* Added shadow */
}

.btn-pdf:hover {
    background-color: #552299; /* Slightly darker shade on hover */
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3); /* More pronounced shadow */
    transform: scale(1.05); /* Subtle scaling effect */
}


.playPauseButton:hover {
    background-color: #257197;
}

.btn-pdf:hover {
    background-color: #301360;
}

.music-links-harmony {
  display: flex;
  flex-direction: row;
  gap: 18px;
  margin-bottom: 18px;
  align-items: center;
  margin-left: auto;
  margin-right: auto;
  justify-content: center;
}
.music-links-harmony a {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0,197,215,0.13);
  padding: 0;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s, background 0.18s;
  aspect-ratio: 1 / 1;
  width: 80px;
  height: 80px;
  min-width: 0;
  min-height: 0;
  border: 2px solid #00c5d7;
}
.music-links-harmony a:hover {
  transform: scale(1.10);
  box-shadow: 0 8px 24px rgba(237,144,5,0.18);
  border-color: #ed9005;
  background: linear-gradient(135deg, #e0f7fa 0%, #fffbe6 100%);
}
.music-links-harmony img {
  max-width: 70%;
  max-height: 70%;
  width: auto;
  height: auto;
  display: block;
  margin: 0;
  object-fit: contain;
}
@media (max-width: 900px) {
  .music-links-harmony a {
    width: 64px;
    height: 64px;
  }
}
@media (max-width: 600px) {
  .music-links-harmony a {
    width: 48px;
    height: 48px;
  }
}
/* Rock/Index palette */
.music-links-harmony.music-links-rock a {
  background: #fff;
  border: 2px solid #6633cc;
}
.music-links-harmony.music-links-rock a:hover {
  border-color: #ff3366;
  background: linear-gradient(135deg, #f3e7ff 0%, #ffe6f0 100%);
}