/* Keyboard Shortcuts Styles */
#keyboardHelpModal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: var(--z-index-overlay);
  display: none;
  justify-content: center;
  align-items: center;
  animation: fadeIn var(--transition-slow) ease-in-out;
}

#keyboardHelpModal.show {
  display: flex;
}

#keyboardHelpModal .modal-content {
  background: var(--background-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-3xl);
  max-width: 900px;
  width: 95vw;
  max-height: 90vh;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-xl);
  animation: slideIn var(--transition-slow) ease-out;
  display: flex;
  flex-direction: column;
}

#keyboardHelpModal .modal-content .close-button {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-lg);
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition-normal);
  z-index: var(--z-index-base);
}

#keyboardHelpModal .modal-content .close-button:hover {
  color: var(--text-primary);
}

#keyboardHelpModal .modal-content h2 {
  margin: 0 0 var(--spacing-xl) 0;
  color: var(--text-primary);
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

#keyboardHelpModal .modal-content .shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  overflow-y: auto;
  padding-right: var(--spacing-sm);
  margin-right: calc(-1 * var(--spacing-sm));
}

#keyboardHelpModal .modal-content .shortcuts-grid .shortcut-category {
  background: var(--background-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  border-left: 4px solid var(--accent);
}

#keyboardHelpModal .modal-content .shortcuts-grid .shortcut-category h3 {
  margin: 0 0 var(--spacing-sm) 0;
  color: var(--accent);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

#keyboardHelpModal
  .modal-content
  .shortcuts-grid
  .shortcut-category
  .shortcut-item {
  display: flex;
  justify-content: space-between;
  margin: 3px 0;
  padding: var(--padding-xs) 0;
  border-bottom: 1px solid var(--border-secondary);
  align-items: center;
}

#keyboardHelpModal
  .modal-content
  .shortcuts-grid
  .shortcut-category
  .shortcut-item
  .shortcut-key {
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  background: var(--background-tertiary);
  padding: var(--padding-xs) var(--padding-sm);
  border-radius: var(--border-radius-sm);
  font-family: monospace;
  font-size: var(--font-size-sm);
  min-width: 24px;
  text-align: center;
  border: 1px solid var(--border-primary);
}

#keyboardHelpModal
  .modal-content
  .shortcuts-grid
  .shortcut-category
  .shortcut-item
  .shortcut-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-left: var(--spacing-sm);
  flex: 1;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Volume Feedback Styles */
#volumeFeedback {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: var(--border-radius-sm);
  z-index: var(--z-index-overlay);
  font-size: var(--font-size-sm);
  pointer-events: none;
  animation: volumeFeedbackFade 1s ease-out;
}

@keyframes volumeFeedbackFade {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }
  20% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  80% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }
}

/* Responsive design for keyboard shortcuts modal */
@media (max-width: 1200px) {
  #keyboardHelpModal .modal-content .shortcuts-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  #keyboardHelpModal .modal-content .shortcuts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  #keyboardHelpModal .modal-content {
    max-width: 95%;
    padding: var(--spacing-xl);
  }

  #keyboardHelpModal .modal-content .shortcuts-grid {
    grid-template-columns: 1fr;
  }
}

/* Custom scrollbar for shortcuts grid */
#keyboardHelpModal .modal-content .shortcuts-grid::-webkit-scrollbar {
  width: 6px;
}

#keyboardHelpModal .modal-content .shortcuts-grid::-webkit-scrollbar-track {
  background: var(--background-secondary);
  border-radius: var(--border-radius-sm);
}

#keyboardHelpModal .modal-content .shortcuts-grid::-webkit-scrollbar-thumb {
  background: var(--border-primary);
  border-radius: var(--border-radius-sm);
}

#keyboardHelpModal
  .modal-content
  .shortcuts-grid::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}