src/App.css

.app {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
}

header {
  margin-bottom: 3rem;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(45deg, #646cff, #61dafb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

header p {
  color: #888;
  font-size: 1.1rem;
}

.upload-area {
  border: 2px dashed #646cff;
  border-radius: 12px;
  padding: 3rem;
  margin: 2rem 0;
  cursor: pointer;
  transition: all 0.3s ease;
  background: rgba(100, 108, 255, 0.05);
}

.upload-area:hover {
  border-color: #61dafb;
  background: rgba(97, 218, 251, 0.05);
}

.upload-content p {
  margin: 0.5rem 0;
  font-size: 1.1rem;
}

.upload-content audio {
  margin-top: 1rem;
  width: 100%;
  max-width: 400px;
}

.controls {
  margin: 2rem 0;
}

.controls button {
  background: #646cff;
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.controls button:hover {
  background: #5a54d6;
  transform: translateY(-2px);
}

.controls button.recording {
  background: #ff4757;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.loading {
  margin: 2rem 0;
  padding: 1rem;
  background: rgba(100, 108, 255, 0.1);
  border-radius: 8px;
  color: #646cff;
  font-weight: 500;
}

.error {
  margin: 2rem 0;
  padding: 1rem;
  background: rgba(255, 71, 87, 0.1);
  border-radius: 8px;
  color: #ff4757;
  font-weight: 500;
}

.tags-section {
  margin: 2rem 0;
  text-align: left;
}

.tags-section h3 {
  margin-bottom: 1rem;
  color: #333;
}

.tags {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tag-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem;
  border-radius: 8px;
  background: rgba(100, 108, 255, 0.05);
  transition: all 0.3s ease;
}

.tag-item.has-feedback {
  background: rgba(100, 108, 255, 0.1);
}

.tag {
  background: linear-gradient(45deg, #646cff, #61dafb);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  margin-right: 1rem;
}

.tag.custom {
  background: linear-gradient(45deg, #27ae60, #2ecc71);
}

.tag.negative {
  background: linear-gradient(45deg, #e74c3c, #c0392b);
  opacity: 0.6;
}

.tag.local {
  background: linear-gradient(45deg, #9b59b6, #8e44ad);
}

.tag.blended {
  background: linear-gradient(45deg, #f39c12, #e67e22);
}

.source-indicator {
  margin-left: 0.5rem;
  font-size: 0.8em;
}

.tag-controls {
  display: flex;
  gap: 0.25rem;
}

.feedback-btn {
  background: transparent;
  border: 2px solid #ddd;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.feedback-btn:hover {
  transform: scale(1.1);
}

.feedback-btn.active {
  border-color: #646cff;
  background: #646cff;
  color: white;
}

.add-tag {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
}

.tag-input {
  flex: 1;
  padding: 0.75rem;
  border: 2px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.tag-input:focus {
  outline: none;
  border-color: #646cff;
}

.add-tag-btn {
  background: #27ae60;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s ease;
}

.add-tag-btn:hover {
  background: #219a52;
}

.frequent-tags {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
}

.frequent-tags h4 {
  margin-bottom: 0.5rem;
  color: #666;
  font-size: 0.9rem;
}

.frequent-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.frequent-tag {
  background: #f8f9fa;
  border: 1px solid #ddd;
  color: #666;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.frequent-tag:hover {
  background: #646cff;
  color: white;
  border-color: #646cff;
}

.export-section {
  margin: 3rem 0 2rem 0;
  padding: 2rem;
  border: 1px solid #eee;
  border-radius: 12px;
  background: #fafafa;
}

.export-section h3 {
  margin-bottom: 1rem;
  color: #333;
}

.export-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.export-btn {
  background: #3498db;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s ease;
}

.export-btn:hover {
  background: #2980b9;
}

.clear-btn {
  background: #e74c3c;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s ease;
}

.clear-btn:hover {
  background: #c0392b;
}

.model-stats {
  margin-top: 1rem;
  padding: 1rem;
  background: white;
  border-radius: 8px;
  border: 1px solid #ddd;
}

.model-stats p {
  margin: 0.25rem 0;
  color: #666;
  font-size: 0.9rem;
}

footer {
  margin-top: 3rem;
  padding: 2rem 0 1rem 0;
  border-top: 1px solid #eee;
  text-align: center;
}

footer p {
  margin: 0;
  color: #888;
  font-size: 0.9rem;
  line-height: 1.5;
}

footer a {
  color: #646cff;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .app {
    padding: 1rem;
  }
  
  .upload-area {
    padding: 2rem 1rem;
  }
  
  header h1 {
    font-size: 2rem;
  }
}