@import url("https://fonts.googleapis.com/css2?family=Michroma&display=swap");

body {
  font-family: "Michroma", sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
  box-sizing: border-box;
  background-color: black;
}

.main-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-height: 100vh;
}

/* Allow pinch-zoom but not double-tap zoom, which would fight double-tap sustain. */
button {
  touch-action: manipulation;
}

#starfield,
#aurora-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

#aurora-background {
  z-index: -1;
}

.tone-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  width: 100%;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.tone-button {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: normal;
  color: white;
  text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
  font-size: 18px;
}

.button-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
  max-width: 450px;
  aspect-ratio: 1 / 1;
  margin-bottom: 20px;
}

.chord-button {
  width: 100%;
  height: 100%;
  border-radius: 10px;
  border: none;
  font-size: clamp(12px, 3vw, 16px);
  font-weight: normal;
  font-family: "Michroma", sans-serif;
  cursor: pointer;
  background-color: rgba(76, 175, 80, 0.8);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 5px;
  position: relative;
  overflow: hidden;
}

.chord-button::before {
  content: "";
  position: absolute;
  width: 30%;
  height: 30%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  transition: transform 0.3s ease;
  border-radius: 5px;
  opacity: 1;
  z-index: -1;
}

.chord-button:nth-child(1)::before {
  background-color: rgba(69, 191, 255, 1); /* Light Sky Blue */
}

.chord-button:nth-child(2)::before {
  background-color: rgba(71, 191, 255, 1); /* Sky Blue */
}

.chord-button:nth-child(3)::before {
  background-color: rgba(0, 191, 255, 1); /* Deep Sky Blue */
}

.chord-button:nth-child(4)::before {
  background-color: rgba(0, 174, 255, 1); /* Bright Blue */
}

.chord-button:nth-child(5)::before {
  background-color: rgba(0, 157, 255, 1); /* Electric Blue */
}

.chord-button:nth-child(6)::before {
  background-color: rgba(0, 140, 255, 1); /* Azure Blue */
}

.chord-button:nth-child(7)::before {
  background-color: rgba(0, 123, 255, 1); /* Medium Blue */
}

.chord-button:nth-child(8)::before {
  background-color: rgba(0, 106, 255, 1); /* Ocean Blue */
}

.chord-button:nth-child(9)::before {
  background-color: rgba(0, 89, 255, 1); /* Deep Blue */
}

.chord-button:hover::before {
  transform: translate(-50%, -50%) scale(1);
}

@keyframes spin-clockwise {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes spin-counter-clockwise {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(-360deg);
  }
}

.chord-button.spinning {
  transform: scale(0.5);
  animation: spin-clockwise 0.1s linear infinite;
  transform-origin: center;
}

.chord-button.spinning::before {
  width: 60%;
  height: 60%;
}

.chord-button:active {
  transform: scale(0.95);
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
}

.tone-selector {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-bottom: 20px;
}

.tone-select-button {
  padding: 8px 16px;
  font-size: clamp(10px, 3vw, 15px);
  border: none;
  border-radius: 5px;
  background-color: rgba(100, 149, 237, 0.8);
  color: white;
  cursor: pointer;
  transition: background-color 0.3s;
}

.tone-select-button:hover {
  background-color: rgba(100, 149, 237, 1);
}

.tone-select-button.active {
  background-color: rgba(65, 105, 225, 1);
}

.octave-button {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  font-size: 24px;
  font-weight: bold;
  cursor: pointer;
  background-color: #2196f3;
  color: white;
}

#decrease-octave {
  margin-right: 12px;
}

#increase-octave {
  margin-left: 12px;
}

.octave-button:hover {
  background-color: #1e88e5;
}

.octave-button:active {
  transform: scale(0.95);
}

@media (max-width: 600px) {
  .button-container {
    max-width: 90vw;
  }

  .chord-button {
    font-size: 12px;
  }

  .tone-button {
    width: 50px;
    height: 50px;
    font-size: 14px;
  }

  .tone-select-button {
    padding: 6px 12px;
    font-size: 12px;
  }
}

@media (max-width: 400px) {
  .button-container {
    gap: 5px;
  }

  .chord-button {
    font-size: 10px;
  }

  .tone-button {
    width: 40px;
    height: 40px;
    font-size: 12px;
  }

  .tone-select-button {
    padding: 4px 8px;
    font-size: 10px;
  }
}

@media (max-height: 600px) {
  body {
    justify-content: flex-start;
  }

  .main-content {
    padding-top: 20px;
  }
}