KGStudio/src/components/KeySignaturePickerPopup.css

.key-signature-popup {
  min-width: 270px;
  padding: 12px 12px 10px;
}

.key-signature-picker {
  width: 252px;
  height: 224px;
  position: relative;
  color: #e0e0e0;
  font-family: Georgia, 'Times New Roman', serif;
}

.key-signature-picker-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  color: #f0f0f0;
  letter-spacing: 0.4px;
  pointer-events: none;
  font-weight: 600;
}

.key-signature-picker-title.major {
  top: 2px;
  font-size: 10px;
}

.key-signature-picker-title.minor {
  top: 60px;
  font-size: 9px;
  color: #9fc89c;
}

.key-signature-picker-ring {
  position: absolute;
  inset: 32px 40px 30px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, transparent 0 38%, rgba(33, 33, 33, 0.96) 38% 49%, transparent 49%),
    conic-gradient(
      from 0deg,
      rgba(84, 84, 84, 0.28),
      rgba(69, 69, 69, 0.5),
      rgba(84, 84, 84, 0.28)
    );
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.key-signature-picker-slot {
  position: absolute;
  transform: translate(-50%, -50%);
}

.key-signature-picker-slot-outer,
.key-signature-picker-slot-inner,
.key-signature-picker-slot-count {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.key-signature-picker-slot-count {
  font-size: 7px;
  color: #b8b8b8;
  white-space: nowrap;
  pointer-events: none;
}

.key-signature-picker-item-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.key-signature-picker-paired-row {
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  white-space: nowrap;
}

.key-signature-picker-key {
  display: inline-flex;
  align-items: center;
}

.key-signature-picker-divider {
  color: #b8b8b8;
  font-size: 9px;
  line-height: 1;
  padding: 0 1px;
}

.key-signature-picker-button-paired {
  padding: 0 2px;
  border-radius: 999px;
}

.key-signature-picker-button {
  appearance: none;
  -webkit-appearance: none;
  border: none;
  background: transparent;
  background-color: transparent;
  box-shadow: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
  line-height: 1;
  transition: transform 0.16s ease, opacity 0.16s ease, text-shadow 0.16s ease;
}

.key-signature-picker-button:hover {
  background: transparent;
  background-color: transparent;
  transform: scale(1.05);
  text-shadow: 0 0 10px currentColor;
}

.key-signature-picker-button:focus-visible {
  outline: 2px solid #2d2d2d;
  outline-offset: 4px;
  border-radius: 6px;
}

.key-signature-picker-button:focus,
.key-signature-picker-button:active {
  background: transparent;
  background-color: transparent;
  box-shadow: none;
}

.key-signature-picker-button.major {
  color: #e08b94;
  font-size: 13px;
}

.key-signature-picker-button.minor {
  color: #8fba88;
  font-size: 11px;
}

.key-signature-picker-label {
  display: inline-flex;
  align-items: flex-start;
}

.key-signature-picker-label.selected {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.key-signature-picker-accidental {
  font-size: 0.58em;
  line-height: 1;
  margin-left: 1px;
  position: relative;
  top: -0.15em;
}

@media (max-width: 900px) {
  .key-signature-popup {
    min-width: min(92vw, 270px);
    padding: 12px 10px 10px;
  }

  .key-signature-picker {
    width: min(82vw, 252px);
    height: min(72vw, 224px);
  }

  .key-signature-picker-button.major {
    font-size: 12px;
  }

  .key-signature-picker-button.minor {
    font-size: 10px;
  }
}