/* ==================== Device Settings Panel (Collapsible) ==================== */

.device-settings-panel {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  margin: 0.5rem;
  overflow: hidden;
  animation: slideDown 0.3s ease-out;
  box-shadow: var(--shadow-md);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
    max-height: 0;
  }
  to {
    opacity: 1;
    transform: translateY(0);
    max-height: 600px;
  }
}

.settings-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  cursor: pointer;
  transition: all var(--transition-base);
}

.settings-panel-header:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

.settings-panel-header h6 {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
}

.settings-panel-header i.bi-chevron-up {
  transition: transform var(--transition-base);
}

.settings-panel-body {
  padding: 1rem;
  max-height: calc(100vh - 200px);
  overflow-y: auto;
}

.settings-group {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.settings-group:last-of-type {
  border-bottom: none;
}

.settings-label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.settings-label-sm {
  display: block;
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

/* Audio Visualizer */
.audio-visualizer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: 60px;
  background: rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-md);
  padding: 0.25rem;
  gap: 2px;
  overflow: hidden;
}

.visualizer-bar {
  flex: 1;
  min-height: 2px;
  background: linear-gradient(to top, 
    #10b981 0%,    /* Green at bottom */
    #3b82f6 50%,   /* Blue in middle */
    #8b5cf6 100%   /* Purple at top */
  );
  border-radius: 2px;
  transition: height 0.05s ease-out;
  box-shadow: 0 0 4px rgba(59, 130, 246, 0.3);
  animation: pulse 0.5s ease-in-out infinite alternate;
}

@keyframes pulse {
  0% {
    opacity: 0.8;
  }
  100% {
    opacity: 1;
  }
}

.visualizer-bar:nth-child(odd) {
  animation-delay: 0.1s;
}

.visualizer-bar:nth-child(even) {
  animation-delay: 0.2s;
}

/* Form Controls */
.settings-panel-body .form-select {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  padding: 0.375rem 0.625rem;
  transition: all var(--transition-base);
  background: white;
}

.settings-panel-body .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
  outline: none;
}

.settings-panel-body .form-range {
  width: 100%;
  height: 5px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
}

.settings-panel-body .form-range-sm {
  height: 4px;
}

.settings-panel-body .form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-base);
}

.settings-panel-body .form-range::-webkit-slider-thumb:hover {
  background: var(--primary-dark);
  transform: scale(1.15);
}

.settings-panel-body .form-range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  border: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-base);
}

.settings-panel-body .form-range::-moz-range-thumb:hover {
  background: var(--primary-dark);
  transform: scale(1.15);
}

/* Buttons */
.settings-panel-body .btn {
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.8125rem;
  transition: all var(--transition-base);
  padding: 0.375rem 0.75rem;
}

.settings-panel-body .btn-outline-primary {
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  background: white;
}

.settings-panel-body .btn-outline-primary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.settings-panel-body .btn-danger {
  background: var(--danger-color);
  border: 1px solid var(--danger-color);
  color: white;
}

.settings-panel-body .btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.settings-panel-body .btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  border: none;
  color: white;
  font-weight: 600;
}

.settings-panel-body .btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Responsive */
@media (max-width: 480px) {
  .device-settings-panel {
    margin: 0.25rem;
  }
  
  .settings-panel-header {
    padding: 0.625rem 0.75rem;
  }
  
  .settings-panel-body {
    padding: 0.75rem;
  }
  
  .audio-visualizer {
    height: 50px;
  }
}

/* Header Active State */
.btn-outline-light.active {
  background: rgba(255, 255, 255, 0.2);
  border-color: white;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .device-settings-panel {
    background: var(--bg-primary);
    color: var(--text-primary);
  }
  
  .settings-panel-body .form-select {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
  }
  
  .audio-visualizer {
    background: rgba(0, 0, 0, 0.2);
  }
}