:root {
  --bg-color: black;
  --text-color: #ffffff;
  --primary-color: #9d46ff;
  --secondary-color: #4a148c;
  --accent-color: #b39ddb;
  --error-color: #ff5252;
  --success-color: #4caf50;
}

body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  box-shadow: 0 0px 10px rgb(167, 1, 244, 0.5);
  margin-top: 20px;
  border-radius: 10px;
}

header {
  background-color: rgba(255, 255, 255, 0.05);
  padding: 2rem 0;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
  color: var(--primary-color);
  text-align: center;
  font-size: 3rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.subtitle {
  text-align: center;
  color: var(--accent-color);
  font-size: 1.3rem;
  margin-bottom: 0;
}

.upload-section {
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.file-input-wrapper {
  position: relative;
  overflow: hidden;
  display: inline-block;
  width: 100%;
  margin-bottom: 1.5rem;
}

.file-input {
  font-size: 100px;
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  cursor: pointer;
}

.file-input-label {
  display: block;
  padding: 16px 24px;
  background-color: var(--primary-color);
  color: var(--text-color);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.1rem;
  font-weight: bold;
  text-align: center;
  width: 100%;
  box-sizing: border-box;
}


.selected-file {
  margin-top: 1rem;
  font-style: italic;
  text-align: center;
}

.submit-btn {
  display: block;
  width: 100%;
  padding: 16px;
  margin-top: 1.5rem;
  background-color: var(--primary-color);
  color: var(--text-color);
  border: none;
  border-radius: 8px;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.submit-btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.submit-btn:disabled {
  background-color: #555;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.results-section {
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 2.5rem;
  margin-top: 2rem;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.stem-list {
  list-style-type: none;
  padding: 0;
}

.stem-item {
  background-color: rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.stem-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.stem-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.stem-name {
  font-weight: bold;
  color: var(--accent-color);
  font-size: 1.3rem;
}

.stem-controls {
  display: flex;
  gap: 0.8rem;
}

.control-btn {
  background-color: var(--secondary-color);
  color: var(--text-color);
  border: none;
  border-radius: 6px;
  padding: 10px 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
}

.control-btn:hover {
  background-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.control-btn.active {
  background-color: var(--accent-color);
  color: var(--bg-color);
}

.waveform-container {
  width: 100%;
  height: 120px;
  background-color: black;
  border-radius: 8px;
  overflow: hidden;
}

.loading {
  text-align: center;
  margin-top: 2rem;
}

.loading p {
  font-size: 32px;
  font-weight: bold;
  animation: colorBlink 2s linear infinite;
}

.loading-spinner {
  border: 5px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top: 5px solid var(--primary-color);
  width: 60px;
  height: 60px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
  margin-bottom: 20px;
}

@keyframes colorBlink {
  0% { color: #ff0000; }
  25% { color: #00ff00; }
  50% { color: #0000ff; }
  75% { color: #ffff00; }
  100% { color: #ff0000; }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error-message, .success-message {
  text-align: center;
  margin-top: 1rem;
  padding: 1.2rem;
  border-radius: 8px;
  font-weight: bold;
}

.error-message {
  color: var(--error-color);
  background-color: rgba(255, 82, 82, 0.15);
}

.success-message {
  color: var(--success-color);
  background-color: rgba(76, 175, 80, 0.15);
}

footer {
  margin-top: auto;
  text-align: center;
  padding: 1.5rem;
  background-color: rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}

.volume-slider {
  width: 120px;
  margin-left: 15px;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--accent-color);
  outline: none;
  border-radius: 3px;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--primary-color);
  cursor: pointer;
  border-radius: 50%;
}

.volume-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--primary-color);
  cursor: pointer;
  border-radius: 50%;
}

.master-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  background-color: rgba(255, 255, 255, 0.08);
  padding: 1.5rem;
  border-radius: 12px;
}

.master-btn {
  background-color: var(--primary-color);
  color: var(--text-color);
  border: none;
  border-radius: 6px;
  padding: 12px 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.1rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.master-btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 140px;
  background-color: var(--secondary-color);
  color: var(--text-color);
  text-align: center;
  border-radius: 6px;
  padding: 8px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -70px;
  opacity: 0;
  transition: opacity 0.3s;
  font-size: 0.9rem;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

#reset-icon {
    position: fixed;
    top: 20px;
    left: 20px;
    font-size: 24px;
    cursor: pointer;
  z-index: 99999;
  color: var(--primary-light);
}

#reset-icon:hover {
  color: var(--primary-color);
  transform: rotate(180deg);
}


#settingsIcon {
    position: fixed;
  top: 20px;
  right: 20px;
    font-size: 20px;
    cursor: pointer;
  z-index: 99999;
  color: var(--primary-light);
}

.options-section {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
}

.options-section label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: bold;
  color: var(--accent-color);
}



.options-section select {
  width: 100%;
  padding: 12px;
  border-radius: 6px;
  background-color: #000000;
  color: var(--text-color);
  border: 1px solid var(--accent-color);
  font-size: 1rem;
  transition: all 0.3s ease;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  text-align: center;
  text-align-last: center;
  background-image: url('data:image/svg+xml;utf8,<svg fill="%23ffffff" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/><path d="M0 0h24v24H0z" fill="none"/></svg>');
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.options-section select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(142, 36, 170, 0.3);
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  h1 {
    font-size: 2.2rem;
  }

  .subtitle {
    font-size: 1.1rem;
  }

  .upload-section, .results-section {
    padding: 1.5rem;
  }

  .submit-btn, .master-btn {
    font-size: 1rem;
    padding: 12px 20px;
  }

  .options-section {
    flex-direction: column;
    gap: 1rem;
  }

  .options-section select {
    width: 100%;
  }

  .master-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .stem-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .stem-controls {
    margin-top: 1rem;
    justify-content: flex-start;
  }
}

#message {
font-size: 14px;
color: var(--text-color);
text-align: center;
}

#stemNumber {
    width: 100%;
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--accent-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    text-align: center;
}

#recordButton {
  display: block;
  padding: 16px 24px;
  background-color: var(--primary-color);
  color: var(--text-color);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.1rem;
  font-weight: bold;
  text-align: center;
  width: 100%;
  box-sizing: border-box;
}

.file-input-label:hover,
#recordButton:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

#recordButton.recording {
  background-color: #ff4136;
}