/* Stems Processor - CSS Styling */

:root {
  --primary: #6200ea;
  --primary-light: #9d46ff;
  --primary-dark: #0a00b6;
  --text: #ffffff;
  --background: black;
  --surface: #1e1e1e;
  --surface-light: #2a2a2a;
  --error: #cf6679;
  --success: #4caf50;
  --warning: #ffc107;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

header {
  background-color: rgba(255, 255, 255, 0.05);
  padding: 2rem 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
}

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

.subtitle {
  color: var(--text);
  font-size: 1.3rem;
  margin-bottom: 0;
  opacity: 0.9;
}

/* Processing Mode Badge */
.processing-mode {
  margin-top: 1.5rem;
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(45deg, var(--primary), var(--primary-dark));
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2);
}

/* Auto-Processing Indicator */
.auto-process-indicator {
  background: linear-gradient(135deg, #0a0a0a 0%, #2a0a2a 20%, #3d1a4f 40%, #1a0a3d 60%, #4f1a3d 80%, #0a0a0a 100%);
  border: 2px solid var(--primary-light);
  border-radius: 15px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2), inset 0 0 20px rgba(0, 0, 0, 0.2);
  animation: processing-pulse 2s ease-in-out infinite;
}

@keyframes processing-pulse {
  0%, 100% { 
    border-color: var(--primary-light);
    box-shadow: 0 0 20px rgba(157, 70, 255, 0.3);
  }
  50% { 
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(157, 70, 255, 0.5);
  }
}

.indicator-content {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.indicator-content i {
  font-size: 3rem;
  color: var(--primary-light);
}

.indicator-text {
  flex: 1;
}

.song-name {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-light);
  margin-bottom: 0.5rem;
}

.process-type {
  font-size: 1.1rem;
  color: var(--warning);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  font-weight: 600;
}

.status {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
}

/* Manual Upload Section */
.manual-section {
  background: linear-gradient(135deg, #0a0a0a 0%, #2a0a2a 20%, #3d1a4f 40%, #1a0a3d 60%, #4f1a3d 80%, #0a0a0a 100%);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2), inset 0 0 20px rgba(0, 0, 0, 0.2);
  border: 2px solid rgba(157, 70, 255, 0.3);
  width: 90%;
  margin: 0 auto 2rem auto;
}

.upload-section {
  text-align: center;
}

.file-input-wrapper {
  margin-bottom: 2rem;
}

.file-input {
  display: none;
}

.file-input-label {
  display: inline-block;
  padding: 2rem 3rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary-dark) 100%);
  color: var(--text);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.2rem;
  font-weight: bold;
  border: 2px solid rgba(157, 70, 255, 0.3);
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2), inset 0 0 20px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.file-input-label:hover {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 50%, var(--primary-dark) 100%);
  transform: translateY(-2px);
  box-shadow: 0 0px 20px rgba(255, 255, 255, 0.4), 0 0px 30px rgba(157, 70, 255, 0.3), inset 0 0 25px rgba(0, 0, 0, 0.2);
}

/* Process Type Selection */
.process-options {
  margin: 2rem 0;
}

.option-group label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.type-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

.type-btn {
  background: linear-gradient(135deg, rgba(157, 70, 255, 0.1), rgba(74, 20, 140, 0.1));
  border: 2px solid rgba(157, 70, 255, 0.3);
  color: var(--text);
  padding: 2rem 1rem;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.type-btn.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary-dark) 100%);
  border-color: var(--primary-light);
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2);
}

.type-btn:hover {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 50%, var(--primary-dark) 100%);
  transform: translateY(-2px);
}

.type-btn i {
  font-size: 2.5rem;
  color: var(--primary-light);
}

.type-btn small {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  font-weight: normal;
}

/* Process Button */
.process-btn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary-dark) 100%);
  color: var(--text);
  border: 2px solid rgba(157, 70, 255, 0.3);
  border-radius: 12px;
  padding: 1.5rem 3rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.3rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  width: 100%;
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2), inset 0 0 20px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.process-btn:hover {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 50%, var(--primary-dark) 100%);
  transform: translateY(-2px);
  box-shadow: 0 0px 20px rgba(255, 255, 255, 0.4), 0 0px 30px rgba(157, 70, 255, 0.3), inset 0 0 25px rgba(0, 0, 0, 0.2);
}

.process-btn:disabled {
  background: linear-gradient(135deg, #555 0%, #444 50%, #333 100%);
  cursor: not-allowed;
  transform: none;
  opacity: 0.6;
}

/* Loading Section */
.loading {
  background: linear-gradient(135deg, #0a0a0a 0%, #2a0a2a 20%, #3d1a4f 40%, #1a0a3d 60%, #4f1a3d 80%, #0a0a0a 100%);
  border-radius: 12px;
  padding: 2rem;
  margin: 2rem auto;
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2), inset 0 0 20px rgba(0, 0, 0, 0.2);
  border: 2px solid rgba(157, 70, 255, 0.3);
  width: 90%;
  text-align: center;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 5px solid rgba(157, 70, 255, 0.3);
  border-top: 5px solid var(--primary-light);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 2rem auto;
}

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

/* Progress Bar Styles */
.progress-container {
  margin: 2rem 0;
}

.progress-bar-wrapper {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(157, 70, 255, 0.3);
  border-radius: 12px;
  padding: 1.5rem;
}

.progress-bar {
  width: 100%;
  height: 12px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(157, 70, 255, 0.2);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, #00ff88 100%);
  border-radius: 6px;
  width: 0%;
  transition: width 0.5s ease;
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.2) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.2) 75%,
    transparent 75%,
    transparent
  );
  background-size: 20px 20px;
  animation: progressStripes 1s linear infinite;
}

@keyframes progressStripes {
  from { background-position: 0 0; }
  to { background-position: 20px 0; }
}

.progress-text {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  font-size: 0.9rem;
}

#progressPercent {
  font-weight: bold;
  color: var(--primary-light);
  font-size: 1.1rem;
}

#progressStatus {
  color: var(--text-muted);
  font-style: italic;
}

.processing-info {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(157, 70, 255, 0.2);
  border-radius: 8px;
  padding: 1.5rem;
  margin-top: 2rem;
  text-align: left;
}

.processing-info h4 {
  color: var(--primary-light);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.processing-info ul {
  list-style: none;
  padding: 0;
}

.processing-info li {
  padding: 0.5rem 0;
  color: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.processing-info li:last-child {
  border-bottom: none;
}

/* Results Section */
.results-section {
  background: linear-gradient(135deg, #0a0a0a 0%, #2a0a2a 20%, #3d1a4f 40%, #1a0a3d 60%, #4f1a3d 80%, #0a0a0a 100%);
  border-radius: 12px;
  padding: 2rem;
  margin-top: 2rem;
  box-shadow: 0 0px 15px rgba(255, 255, 255, 0.3), 0 0px 25px rgba(157, 70, 255, 0.2), inset 0 0 20px rgba(0, 0, 0, 0.2);
  border: 2px solid rgba(157, 70, 255, 0.3);
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.results-info {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.result-badge.success {
  background: rgba(76, 175, 80, 0.2);
  border: 1px solid #4caf50;
  color: #4caf50;
}

.result-badge.info {
  background: rgba(33, 150, 243, 0.2);
  border: 1px solid #2196f3;
  color: #2196f3;
}

/* Stems Container */
.stems-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stem-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(157, 70, 255, 0.3);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.stem-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(157, 70, 255, 0.3);
}

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

.stem-name {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--primary-light);
  text-transform: capitalize;
}

.stem-type {
  background: var(--primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
}

.stem-player {
  width: 100%;
  margin: 1rem 0;
}

.stem-controls {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}

.stem-btn {
  background: linear-gradient(45deg, var(--primary), var(--primary-light));
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stem-btn:hover {
  background: linear-gradient(45deg, var(--primary-light), var(--primary));
  transform: translateY(-1px);
}

/* Action Buttons */
.action-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.action-btn {
  background: linear-gradient(135deg, rgba(157, 70, 255, 0.1), rgba(74, 20, 140, 0.1));
  border: 2px solid rgba(157, 70, 255, 0.3);
  color: var(--text);
  padding: 1.5rem 1rem;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.action-btn:hover {
  background: linear-gradient(135deg, rgba(157, 70, 255, 0.2), rgba(74, 20, 140, 0.2));
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(157, 70, 255, 0.3);
}

.action-btn i {
  font-size: 1.5rem;
  color: var(--primary-light);
}

/* Error and Success Messages */
.error-message {
  background: rgba(244, 67, 54, 0.1);
  border: 1px solid #f44336;
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin: 1rem auto;
  color: #ff5252;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 90%;
}

.error-message::before {
  content: "⚠️";
  font-size: 1.2rem;
  margin-top: 0.1rem;
}

.success-message {
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid #4caf50;
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin: 1rem auto;
  color: #66bb6a;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 90%;
}

.success-message::before {
  content: "✅";
  font-size: 1.2rem;
  margin-top: 0.1rem;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  .subtitle {
    font-size: 1.1rem;
  }
  
  .manual-section {
    width: 95%;
    padding: 1.5rem;
  }
  
  .type-buttons {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .type-btn {
    padding: 1.5rem 1rem;
  }
  
  .stems-container {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .action-buttons {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .indicator-content {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
  
  .indicator-content i {
    font-size: 2rem;
  }
  
  .song-name {
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  
  .file-input-label {
    padding: 1.5rem 2rem;
    font-size: 1rem;
  }
  
  .process-btn {
    padding: 1.25rem 2rem;
    font-size: 1.1rem;
  }
  
  .mode-badge {
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
  }
}