/* App.css */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--color-bg);
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-xl);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.logo {
  font-family: var(--font-family-serif);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.streak-badge {
  background-color: var(--color-primary-dark);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-weight: 600;
}

.main-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  gap: var(--spacing-xl);
}

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 600px;
  transition: max-width 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.2s ease;
}

.card.has-hint {
  max-width: 850px;
}

.sheet-music-container {
  display: flex;
  justify-content: center;
  width: 100%;
  overflow: hidden;
}

.feedback-area {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1000;
  pointer-events: none;
  width: auto;
  height: auto;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.success-message {
  color: white;
  font-size: 2.5rem;
  font-weight: 800;
  background-color: rgba(0, 0, 0, 0.7);
  padding: 1rem 2rem;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(4px);
}

.instruction-text {
  display: none;
}

.error-message {
  color: var(--color-error);
  margin-top: var(--spacing-md);
}

.hint-card {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  width: 100%;
  text-align: center;
}

.hint-note {
  font-size: var(--font-size-lg);
  font-weight: bold;
  margin-bottom: var(--spacing-xs);
}

.hint-positions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
}

.hint-tag {
  background-color: var(--color-surface);
  border: 1px solid var(--color-text-muted);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--color-text-main);
}

/* Force button colors to ensure dark mode visibility */
button {
  color: var(--color-text-main);
}

/* Pitch Monitor Bar */
.pitch-monitor-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.mic-button {
  background-color: var(--color-surface);
  border: 2px solid var(--color-text-muted);
  color: var(--color-text-muted);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mic-button:hover {
  background-color: var(--color-bg);
  color: var(--color-text-main);
}

.mic-button.listening {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 15px rgba(var(--hue-primary), 0.3);
}

.pitch-readout {
  display: flex;
  flex-direction: column;
  min-width: 100px;
}

.detected-note {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-text-muted);
}

.detected-note.match {
  color: var(--color-success);
}

.detected-hz {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Controls Footer */
.settings-footer {
  background-color: var(--color-surface);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.controls-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  width: 100%;
  max-width: 800px;
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  width: 100%;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  width: 100%;
  align-items: start;
}

/* Mobile: Stack everything */
@media (max-width: 600px) {

  .settings-grid,
  .tools-grid {
    grid-template-columns: 1fr;
  }
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  width: 100%;
}

.control-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.control-select {
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  border: 1px solid #ddd;
  font-family: inherit;
  font-size: 0.9rem;
  background-color: var(--color-bg);
}

.control-button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: var(--spacing-sm);
  transition: color 0.2s;
}

.control-button.active {
  color: var(--color-primary);
}

/* Animations */
@keyframes pop {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }

  50% {
    transform: scale(1.1);
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.animate-pop {
  animation: pop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

/* Switch Button for Metronome */
.switch-button {
  width: 44px;
  height: 24px;
  border-radius: 99px;
  background-color: #ddd;
  position: relative;
  cursor: pointer;
  transition: background-color 0.2s;
  padding: 0;
  border: none;
  display: flex;
  align-items: center;
}

.switch-button.active {
  background-color: var(--color-primary);
}

.switch-thumb {
  width: 18px;
  height: 18px;
  background-color: white;
  border-radius: 50%;
  position: absolute;
  left: 3px;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.switch-button.active .switch-thumb {
  transform: translateX(17px);
}

/* Hint Button styling - similar to skip button but distinct */
.hint-button {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
  font-size: 0.9rem;
}

.hint-button:hover {
  background-color: rgba(var(--hue-primary), 0.1);
  transform: translateY(-2px);
}

.hint-button.active {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(var(--hue-primary), 0.3);
}

.hint-button.active:hover {
  background-color: var(--color-primary-dark);
}

.zen-button {
  background-color: transparent;
  border: 2px solid var(--color-text-muted);
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
  font-size: 0.9rem;
}

.zen-button:hover {
  border-color: var(--color-text-main);
  color: var(--color-text-main);
  background-color: rgba(128, 128, 128, 0.1);
  transform: translateY(-2px);
}

.exit-zen-button {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 10px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-text-muted);
  border-radius: 20px;
  color: var(--color-text-muted);
  cursor: pointer;
  opacity: 0.5;
  transition: all 0.2s;
  z-index: 100;
  font-weight: 600;
  box-shadow: var(--shadow-md);
}

.exit-zen-button:hover {
  opacity: 1;
  color: var(--color-text-main);
  border-color: var(--color-text-main);
  transform: scale(1.05);
}

/* Help Popup */
.help-popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease-out;
}

.help-popup {
  background-color: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  width: 90%;
  position: relative;
  border: 1px solid rgba(128, 128, 128, 0.1);
}

.help-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
}

.help-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.shortcut-key {
  background-color: var(--color-bg);
  border: 1px solid rgba(128, 128, 128, 0.2);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: monospace;
  font-weight: bold;
  color: var(--color-text-main);
}

.help-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
}

.help-close:hover {
  color: var(--color-text-main);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* Header Adjustments */
.app-header-left {
  display: flex;
  flex-direction: column;
}

.app-subtitle {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.app-subtitle a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

.app-subtitle a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.header-controls {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.icon-button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 8px;
  border-radius: 50%;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-button:hover {
  background-color: rgba(128, 128, 128, 0.1);
  color: var(--color-text-main);
}

.game-mode-toggle {
  display: flex;
  background-color: var(--color-bg);
  padding: 2px;
  border-radius: 20px;
  border: 1px solid rgba(128, 128, 128, 0.1);
}

.toggle-option {
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  transition: all 0.2s;
}

.toggle-option.active {
  background-color: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* Mobile Landscape Optimization */
/* Staff Row Wrapper (Removed) */
/* .side-hint-note (Removed) */


/* Mobile Landscape Optimization */
@media (max-height: 500px) and (orientation: landscape) {
  .app-header {
    padding: 2px var(--spacing-md);
    position: absolute;
    /* Take out of flow to save space */
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 100;
    background: transparent;
    pointer-events: none;
    /* Let clicks pass through to content */
    box-shadow: none;
  }

  /* Hide Title/Logo to save space for content */
  .app-header-left {
    display: none;
  }

  .header-controls {
    pointer-events: auto;
    /* Re-enable clicks for buttons */
    margin-left: auto;
    /* Push to right */
    padding-right: 10px;
  }

  .main-stage {
    padding: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* Center vertically */
    gap: 0;
    height: 100vh;
    /* Fixed viewport height */
    overflow: hidden;
    /* No scrolling for main game loop */
    position: relative;
  }

  .card.sheet-music-card {
    max-width: 95vw;
    height: 100%;
    max-height: none;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    padding: 0;
    width: 100%;
    background: transparent;
    box-shadow: none;
    border: none;
    flex-shrink: 0;
  }

  /* Staff Row: Horizontal Layout for Staff + Note Name */
  .staff-row {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-top: 20px;
    /* Space from top */
    margin-bottom: 0;
    gap: 16px;
    flex: 0 0 auto;
    z-index: 1;
  }

  .side-hint-note {
    display: block;
    font-size: 1.5rem;
    margin-right: 0;
    z-index: 10;
    flex-shrink: 0;
  }

  /* BIGGER STAFF */
  .sheet-music-container {
    width: 100%;
    flex: 0 0 auto;
    min-height: 180px;
    /* Increased from 150px */
    transform: scale(1.1);
    /* Scale UP */
    transform-origin: center center;
    justify-content: center;
    margin-bottom: -10px;
    /* Pull fretboard closer */
    padding-top: 0;
    z-index: 1;
  }

  .card.sheet-music-card.zen-mode .sheet-music-container {
    margin-bottom: 0;
  }

  /* Hint card container (Fretboard + Note Name) */
  .hint-card {
    margin-top: 0;
    flex: 1 1 auto;
    width: 100%;
    max-width: 100%;
    padding: 0 10px;
    background: transparent;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 8px;
    min-height: 0;
    max-height: 200px;
    /* Cap fretboard height */
  }

  /* The note name inside hint card */
  .hint-card .hint-note {
    display: block;
    font-size: 2rem;
    margin-bottom: 0;
    flex-shrink: 0;
    font-weight: 800;
    width: 4rem;
    text-align: center;
  }

  /* Fretboard Container - Responsive adjustments */
  .fretboard-container {
    transform: none;
    max-width: none;
    flex-grow: 1;
    height: 100%;
    /* Ensure it fills the space but respects container limits */
  }

  /* Hide Instruction Text ("Play note above") */
  .instruction-text {
    display: none;
  }

  /* OVERLAY FEEDBACK - Replaces reserved space */
  /* Remove local overrides since global is now overlay */
  .feedback-area {
    /* Use global settings but ensure visibility triggers work */
    opacity: 0;
  }

  /* Show feedback overlay when it has content (requires slight JS tweak or CSS hack if empty div stays) 
     Assuming .feedback-area always exists, we target the message inside
  */
  .feedback-area:has(.success-message),
  .feedback-area:has(.error-message) {
    opacity: 1;
  }

  .success-message {
    color: white;
    /* Make text white for contrast on dark overlay */
    font-size: 2rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  }

  /* Push settings way down so they don't interfere with main view */
  .settings-footer {
    margin-top: 50px;
    padding-bottom: 50px;
  }

  /* Make main stage scrollable to reach settings */
  .app-container {
    overflow-y: auto;
    height: 100vh;
    display: block;
    /* Break flex height lock */
  }

  /* Action Buttons - floating or tucked */
  .action-row {
    margin-top: 0 !important;
    width: 100%;
    padding-bottom: 5px;
    flex-shrink: 0;
    position: absolute;
    bottom: 2px;
    z-index: 20;
    pointer-events: none;
    /* Pass through clicks */
    justify-content: center;
    gap: 20px;
  }

  .action-row button {
    pointer-events: auto;
    /* Enable buttons */
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #ccc;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

  /* Restore Zen Toggle in Landscape Mobile */
  .exit-zen-button {
    display: block;
    transform: scale(0.8);
    bottom: 45px;
    /* Move up above action row */
    right: 5px;
    padding: 6px 12px;
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #ccc;
    z-index: 100;
  }

  .hint-button,
  .skip-button {
    padding: 4px 16px;
    font-size: 0.9rem;
    height: 36px;
  }

  /* Pitch monitor: Top left absolute */
  .pitch-monitor-bar {
    position: absolute;
    top: 5px;
    left: 10px;
    margin: 0;
    gap: var(--spacing-sm);
    transform: scale(0.7);
    transform-origin: top left;
    z-index: 100;
  }

  .mic-button {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.9);
  }
}

/* Ensure FretboardHint container handles flexible width generic */
.fretboard-container {
  width: 100%;
}