body {
  background-color: #fff0f5;
  font-family: 'Kaisei Opti', serif;
  padding: 30px;
  text-align: center;
}

.header {
  text-align: center;
  margin-bottom: 10px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.nav-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.nav-button {
  padding: 8px 16px;
  font-size: 16px;
  border-radius: 6px;
  border: none;
  background-color: #eee;
  cursor: pointer;
  transition: background-color 0.3s;
}

.nav-button:hover {
  background-color: #ddd;
}

.header h1 {
  color: #cc66cc;
  margin: 0;
  font-size: 32px;
}

.back-button {
  background-color: #ffe4f0;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.back-button:hover {
  background-color: #ffb6d5;
}

.update-note-top {
  color: #999;
  font-size: 14px;
  white-space: nowrap;
  position: absolute;
  right: 0;
  top: 0;
}

.filters {
  margin-bottom: 20px;
  font-size: 16px;
  color: #666;
}

.filter-row {
  margin-bottom: 10px;
}

.filters button {
  margin: 5px;
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  background-color: #eee;
  cursor: pointer;
  transition: background-color 0.3s;
}

.filters button:hover {
  background-color: #ddd;
}

.filters button.active {
  background-color: #cc99ff;
  color: white;
  font-weight: bold;
}

.button {
  font-family: 'Kaisei Opti', serif;
  border: none;
  padding: 15px 30px;
  margin: 10px;
  font-size: 18px;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.button:hover {
  filter: brightness(90%);
}

.color-yellow { background-color: #ffe066;}
.color-pink { background-color: #ffccf2; }
.color-mint { background-color: #ccf2ff; }
.color-rose { background-color: #ffccee; }
.color-lavender { background-color: #e6ccff; }

.sort-label {
  margin-left: 20px;
  font-size: 16px;
  color: #666;
}

.sort-button {
  margin-left: 8px;
  padding: 8px 16px;
  font-size: 16px;
  border-radius: 6px;
  border: none;
  background-color: #eee;
  cursor: pointer;
  transition: background-color 0.3s;
}

.sort-button:hover {
  background-color: #ddd;
}

#searchBox {
  margin-left: 12px;
  padding: 6px 12px;
  font-size: 16px;
  border-radius: 6px;
  border: 1px solid #ccc;
  width: 180px;
}

.button-frame {
  border: 2px solid #ddd;
  border-radius: 12px;
  height: 600px;
  overflow-y: scroll;
  background-color: #fafafa;
  padding: 15px;
  margin-top: 20px;
}

.button-frame::-webkit-scrollbar {
  width: 10px;
}

.button-frame::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

.button-frame::-webkit-scrollbar-thumb {
  background: #cc99ff;
  border-radius: 10px;
}

.button-frame::-webkit-scrollbar-thumb:hover {
  background: #bb88ff;
}

#button-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 5px;
}