/* ===== MAIN STYLES ===== */
body {
  margin: 0;
  padding: 20px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #fafafa;
}

body.capturing {
    background-color: #fafafa !important;
}

.main-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 10px;
  padding-bottom: 140px;
}

.notation-container {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
  align-items: center;
}

/* ===== NOTATION LINES ===== */
.notation-line {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-end;
  min-height: 100px;
  padding: 20px;
  padding-top: 40px; 
  background-color: #f5f5f5;
  box-sizing: border-box;
  border-radius: 8px;
  width: 100%;
  row-gap: 25px;
  column-gap: 4px;
  transition: background-color 0.5s ease;
}

.notation-container.colors-inactive .notation-line {
    background-color: #ffffff !important;
}


.notation-line.section-break {
    margin-top: 1px;
}

/* ===== LINE LABEL ===== */
.line-label {
    position: absolute;
    top: 8px;
    left: 12px;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid #ccc;
    border-radius: 0;
    font-size: 14px;
    color: #555;
    width: 150px;
    padding: 4px;
    outline: none;
    transition: all 0.3s ease;
}

.notation-container.colors-inactive .line-label {
    visibility: hidden;
}

.line-label::placeholder {
    color: #aaa;
    font-style: italic;
}

.line-label:focus {
    border-bottom-color: #007bff;
    background-color: rgba(255, 255, 255, 0.7);
}

/* ===== SYLLABLES ===== */
.syllable {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  min-width: 40px;
  box-sizing: border-box;
  padding: 4px;
  border-radius: 8px;
  transition: background-color 0.3s ease, transform 0.2s ease;
  flex-shrink: 0;
  margin: 0 2px;
  scroll-margin: 100px;
  cursor: pointer;
  position: relative;
}

.syllable.highlighted {
  background-color: rgba(255, 215, 0, 0.3);
  transform: scale(1.05);
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.syllable:hover {
  background-color: rgba(0, 123, 255, 0.1);
}

.syllable.highlighted:hover {
  background-color: rgba(255, 215, 0, 0.4);
}

/* ===== NOTES ===== */
.note {
  width: 32px;
  border-radius: 6px;
  color: #fff;
  font-size: 10px;
  line-height: 1;
  text-align: center;
  margin-bottom: 8px;
  cursor: pointer;
  transition: height 0.2s ease, background-color 0.2s ease;
  user-select: none;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2px;
  box-sizing: border-box;
}

/* Note Heights */
.so-low  { height: 30px; }
.la-low  { height: 40px; }
.ti-low  { height: 50px; }
.do      { height: 60px; }
.re      { height: 70px; }
.mi      { height: 80px; }
.fa      { height: 90px; }
.so      { height: 100px; }
.la      { height: 110px; }
.ti      { height: 120px; }
.do-high { height: 130px; }
.re-high { height: 140px; }
.mi-high { height: 150px; }
.fa-high { height: 160px; }
.so-high { height: 170px; }
.la-high { height: 180px; }


/* ===== ACCIDENTAL SYMBOLS ===== */
.accidental-symbol {
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  color: white;
  font-size: 18px;
  font-weight: bold;
  font-family: 'Times New Roman', serif;
  text-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  z-index: 10;
}

/* ===== NAME LABELS ===== */
.letter-name {
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 24px;
  font-weight: bold;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.solfege-name {
  font-size: 18px;
  font-weight: normal;
  color: white;
  text-transform: lowercase;
  opacity: 0;
  transition: opacity 0.3s ease;
  align-self: center;
  line-height: 1;
}

.show-names .letter-name {
  opacity: 1;
}

.show-names .solfege-name {
  opacity: 1;
}

/* ===== TEXT LABELS ===== */
.text {
  font-size: 18px;
  font-weight: 500;
  text-align: center;
  color: #333;
  white-space: nowrap;
  min-height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== TEXT EDITING ===== */
.text-input {
  font-size: 18px;
  font-weight: 500;
  text-align: center;
  color: #333;
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid #007bff;
  border-radius: 4px;
  padding: 2px 4px;
  min-width: 30px;
  outline: none;
  box-shadow: 0 0 8px rgba(0, 123, 255, 0.3);
}

.text-input:focus {
  border-color: #0056b3;
  box-shadow: 0 0 12px rgba(0, 123, 255, 0.5);
}

.syllable.editing {
  background-color: rgba(0, 123, 255, 0.1);
  transform: scale(1.02);
}

/* ===== PRELOADED SONGS SELECTOR ===== */
#preloadedSongsSelector {
    font-size: 14px;
    height: 32px;
    padding: 0 8px;
    background-color: #f8f9fa;
    border: 1px solid #ced4da;
    border-radius: 4px;
    transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}

#preloadedSongsSelector:focus {
    border-color: #80bdff;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

/* ===== BOTTOM CONTROLS ===== */
.bottom-controls-group {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  z-index: 150;
  transition: transform 0.4s ease;
  pointer-events: none;
}

.bottom-controls-group > * {
  pointer-events: auto;
}

.bottom-controls-group.minimized {
  transform: translateX(-50%) translateY(50%);
}

.floating-navigation {
  display: flex;
  gap: 20px;
  align-items: center;
  position: relative;
  transition: transform 0.3s ease;
  transform: translateY(25px); /* Lowered default position */
}

/* Lowered further when chord mode is off */
body:not(.chord-mode-active) .floating-navigation {
  transform: translateY(55px);
}

.floating-navigation::before {
  content: '';
  position: absolute;
  left: -50px; 
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  pointer-events: none;
}

/* ===== CHORD BOXES ===== */
.chord-boxes {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  margin-bottom: 0;
}

#chordBoxes.show {
    display: flex;
}

.chord-boxes.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  margin-bottom: 10px;
}

.bottom-controls-group.minimized .chord-boxes.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  margin-bottom: 10px;
}

.chord-box-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chord-box-number {
  font-size: 10px;
  color: #888;
  font-weight: 600;
  margin-bottom: 2px;
  opacity: 0;
  transition: opacity 0.3s ease;
  user-select: none;
  pointer-events: none;
  line-height: 1;
  height: 12px;
}

.show-names .chord-box-number {
  opacity: 1;
}

.chord-box {
  background-color: rgba(255, 255, 255, 0.95);
  border: 2px solid;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
  min-width: 40px;
  text-align: center;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.chord-box:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  filter: brightness(1.1);
}

.chord-box:active {
  transform: scale(0.95);
}

.chord-box.selected {
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.5),
              0 4px 15px rgba(0, 0, 0, 0.4);
  filter: brightness(1.2);
}

.arrow-btn {
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.arrow-btn:hover {
  background-color: #0056b3;
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

.arrow-btn:active {
  transform: scale(0.95);
  box-shadow: 0 2px 10px rgba(0, 123, 255, 0.5);
}

.arrow-btn:focus {
  outline: 2px solid #ffd700;
  outline-offset: 2px;
}

.bottom-controls {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  padding: 15px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 200px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  position: relative;
}

/* ===== CONTROL BUTTONS ===== */
.minimize-btn {
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 8px;
  width: 40px;
  height: 30px;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  user-select: none;
  font-family: monospace;
  line-height: 1;
  z-index: 160;
  box-shadow: 0 2px 10px rgba(40, 167, 69, 0.3);
}

.minimize-btn:hover {
  transform: scale(1.1);
  filter: brightness(1.1);
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.minimize-btn:active {
  transform: scale(0.95);
}

.bottom-controls-group.minimized .minimize-btn {
  background-color: #007bff;
  box-shadow: 0 2px 10px rgba(0, 123, 255, 0.3);
}

.bottom-controls-group.minimized .minimize-btn:hover {
  box-shadow: 0 4px 15px rgba(0, 123, 255, 0.4);
}

.bottom-controls-group.minimized .chord-boxes:not(.show) {
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

/* ===== EDIT CONTROLS LAYOUT ===== */
.edit-controls {
  display: flex;
  align-items: center;
  font-size: 16px;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.edit-only-controls,
.upload-controls {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.3s ease;
  margin-bottom: 0;
}

.edit-only-controls.show,
.upload-controls.show {
  max-height: 60px;
  opacity: 1;
  margin-bottom: 10px;
}

.standard-controls {
  /* No special styling needed */
}

.control-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.edit-controls input[type="checkbox"] {
  display: none;
}

/* ===== KEY SIGNATURE CUSTOM COMPONENT ===== */
.key-signature-group {
    position: relative;
}

.key-signature-display {
    background-color: #f8f9fa;
    border: 2px solid #dee2e6;
    border-radius: 6px;
    padding: 0;
    font-size: 16px;
    font-weight: 600;
    color: #495057;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
    width: 36px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.key-signature-display:hover,
.key-signature-display.active {
    border-color: #007bff;
    background-color: #fff;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.3);
}

.key-signature-popup {
    position: absolute;
    bottom: 110%; /* Position above the control bar */
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 8px;
    display: flex;
    gap: 6px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 155;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    transform-origin: bottom center;
}

.key-signature-popup.show {
    opacity: 1;
    visibility: visible;
}

.key-option {
    background-color: #f8f9fa;
    border: 2px solid; /* Changed to 2px to match display */
    border-radius: 4px;
    padding: 6px 8px;
    font-size: 14px;
    font-weight: 600; /* Bolded font */
    color: #495057;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 20px;
    text-align: center;
}

.key-option:hover {
    color: white;
    transform: scale(1.05);
}

/* Key Option Colors */
.key-option[data-key="C"] { border-color: #FF3B30; color: #FF3B30; }
.key-option[data-key="C"]:hover { background-color: #FF3B30; }

.key-option[data-key="Db"], .key-option[data-key="D"] { border-color: #FF9500; color: #FF9500; }
.key-option[data-key="Db"]:hover, .key-option[data-key="D"]:hover { background-color: #FF9500; }

.key-option[data-key="Eb"], .key-option[data-key="E"] { border-color: #FFCC00; color: #FFCC00; }
.key-option[data-key="Eb"]:hover, .key-option[data-key="E"]:hover { background-color: #FFCC00; }

.key-option[data-key="F"], .key-option[data-key="F#"] { border-color: #34C759; color: #34C759; }
.key-option[data-key="F"]:hover, .key-option[data-key="F#"]:hover { background-color: #34C759; }

.key-option[data-key="Gb"], .key-option[data-key="G"] { border-color: #48C4C8; color: #48C4C8; }
.key-option[data-key="Gb"]:hover, .key-option[data-key="G"]:hover { background-color: #48C4C8; }

.key-option[data-key="Ab"], .key-option[data-key="A"] { border-color: #007AFF; color: #007AFF; }
.key-option[data-key="Ab"]:hover, .key-option[data-key="A"]:hover { background-color: #007AFF; }

.key-option[data-key="Bb"], .key-option[data-key="B"] { border-color: #AF52DE; color: #AF52DE; }
.key-option[data-key="Bb"]:hover, .key-option[data-key="B"]:hover { background-color: #AF52DE; }


/* ===== ACCIDENTAL TOGGLE ===== */
.accidental-toggle {
  display: flex;
  background-color: #f8f9fa;
  border: none;
  border-radius: 6px;
  overflow: hidden;
  font-family: 'Times New Roman', serif;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
}

.accidental-option {
  padding: 4px 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 32px;
  transition: all 0.3s ease;
  user-select: none;
  color: #6c757d;
  border: none;
  background: transparent;
}

.accidental-option:hover {
  background-color: rgba(0, 123, 255, 0.1);
}

.accidental-option.active {
  background-color: #007bff;
  color: white;
}

.accidental-option[data-type="flat"] {
  border-right: 1px solid #dee2e6;
}

.accidental-option[data-type="natural"] {
  border-right: 1px solid #dee2e6;
}

/* ===== ICON BUTTONS (Menu) ===== */
.icon-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.3s ease;
  outline: none;
  min-width: 32px;
  height: 32px;
}

#copyVisualBtn {
    background-color: #f0f0f0;
    color: #000000;
}

#copyVisualBtn.active, #copyVisualBtn:hover {
    background-color: #007bff;
}

.icon-btn .glasses-icon {
  transition: all 0.3s ease;
  color: #007bff;
}

.icon-btn:not(.active) .glasses-icon {
  color: #007bff;
  filter: none;
}

.icon-btn.active .glasses-icon {
  color: #007bff;
  filter: drop-shadow(0 0 3px #00ff00) 
          drop-shadow(0 0 6px #00ff00) 
          drop-shadow(0 0 9px #00ff00);
}

.icon-btn:hover {
  background: rgba(240, 248, 255, 0.5);
  transform: scale(1.05);
}

.icon-btn:active {
  transform: scale(0.95);
}

.icon-btn.active:hover .glasses-icon {
  filter: drop-shadow(0 0 4px #00ff00) 
          drop-shadow(0 0 8px #00ff00) 
          drop-shadow(0 0 12px #00ff00);
}

.icon-btn .construction-hat-icon {
  transition: all 0.3s ease;
  color: #6c757d;
}

.icon-btn:not(.active) .construction-hat-icon {
  color: #6c757d;
  filter: none;
}

.icon-btn.active .construction-hat-icon {
  color: #ff9500;
  filter: drop-shadow(0 0 3px #ff9500) 
          drop-shadow(0 0 6px #ff9500) 
          drop-shadow(0 0 9px #ff9500);
}

.icon-btn.active:hover .construction-hat-icon {
  filter: drop-shadow(0 0 4px #ff9500) 
          drop-shadow(0 0 8px #ff9500) 
          drop-shadow(0 0 12px #ff9500);
}

.icon-btn .piano-keys-icon {
  transition: all 0.3s ease;
  color: #6c757d;
}

.icon-btn:not(.active) .piano-keys-icon {
  color: #6c757d;
  filter: none;
}

.icon-btn.active .piano-keys-icon {
  color: #9f4fff;
  filter: drop-shadow(0 0 3px #9f4fff) 
          drop-shadow(0 0 6px #9f4fff) 
          drop-shadow(0 0 9px #9f4fff);
}

.icon-btn.active:hover .piano-keys-icon {
  filter: drop-shadow(0 0 4px #9f4fff) 
          drop-shadow(0 0 8px #9f4fff) 
          drop-shadow(0 0 12px #9f4fff);
}

.icon-btn .save-icon {
  transition: all 0.3s ease;
  color: #6c757d;
}

.icon-btn:not(.active) .save-icon {
  color: #6c757d;
  filter: none;
}

.icon-btn.active .save-icon {
  color: #007bff;
  filter: drop-shadow(0 0 3px #007bff) 
          drop-shadow(0 0 6px #007bff) 
          drop-shadow(0 0 9px #007bff);
}

.icon-btn.active:hover .save-icon {
  filter: drop-shadow(0 0 4px #007bff) 
          drop-shadow(0 0 8px #007bff) 
          drop-shadow(0 0 12px #007bff);
}

/* ===== ADD SYLLABLE BUTTON ===== */
.add-btn {
  background-color: #6c757d;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.add-btn.active {
  background-color: #007bff;
}

.add-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}

.add-btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
}

.add-btn:disabled:hover {
  filter: none;
  transform: none;
}

/* ===== DELETE BUTTON ===== */
.delete-btn {
  background-color: #6c757d;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.delete-btn .trash-icon {
  transition: all 0.3s ease;
  color: currentColor;
}

.delete-btn.active {
  background-color: #dc3545;
}

.delete-btn.active .trash-icon {
  color: white;
}

.delete-btn.confirm-delete {
  background-color: #dc3545;
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.4),
              0 0 0 6px rgba(220, 53, 69, 0.2);
  animation: redPulse 1.5s infinite;
}

@keyframes redPulse {
  0% {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.4),
                0 0 0 6px rgba(220, 53, 69, 0.2);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(220, 53, 69, 0.6),
                0 0 0 12px rgba(220, 53, 69, 0.3);
  }
  100% {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.4),
                0 0 0 6px rgba(220, 53, 69, 0.2);
  }
}

.delete-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}

.delete-btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
  background-color: #6c757d;
}

.delete-btn:disabled:hover {
  filter: none;
  transform: none;
}

.delete-btn:disabled .trash-icon {
  color: #aaa;
}

.info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: #007bff;
  color: white;
  font-size: 12px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
  margin-left: 4px;
}

.info-icon:hover {
  transform: scale(1.1);
  box-shadow: 0 2px 8px rgba(0, 123, 255, 0.3);
}

.info-icon.active {
  background-color: #28a745;
}

.info-icon.active:hover {
  box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

/* ===== NEW LINE BUTTON ===== */
.new-line-btn {
  background-color: #6c757d;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Times New Roman', serif;
}

.new-line-btn.active {
  background-color: #007bff;
}

.new-line-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}

.new-line-btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
  background-color: #6c757d;
}

.new-line-btn:disabled:hover {
  filter: none;
  transform: none;
}

/* ===== ENTER KEY BUTTON ===== */
.enter-key-btn {
  background-color: #6c757d;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.enter-key-btn .enter-key-icon {
  color: currentColor;
}

.enter-key-btn.confirm-enter {
  background-color: #ffc107;
}

.enter-key-btn.active-enter {
  background-color: #28a745;
}

.enter-key-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}

.enter-key-btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
  background-color: #6c757d;
}

.enter-key-btn:disabled:hover {
  filter: none;
  transform: none;
}

/* ===== POPUP STYLES ===== */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.popup-overlay.show {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 500px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.popup-overlay.show .popup-content {
    transform: scale(1);
}

.popup-content h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #333;
}

.popup-content textarea {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-family: inherit;
    font-size: 14px;
    box-sizing: border-box;
    resize: vertical;
}

.popup-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
}

.popup-action-buttons {
    display: flex;
    gap: 10px;
    margin-left: auto;
}

.popup-btn {
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.popup-btn.cancel-btn {
    background-color: #6c757d;
    color: white;
}

.popup-btn.cancel-btn:hover {
    background-color: #5a6268;
}

.popup-btn.submit-btn {
    background-color: #007bff;
    color: white;
}

.popup-btn.submit-btn:hover {
    background-color: #0056b3;
}

.popup-btn:active {
    transform: scale(0.97);
}

.copy-icon {
    cursor: pointer;
    color: #6c757d;
    transition: color 0.3s ease, transform 0.2s ease;
}

.copy-icon:hover {
    color: #007bff;
    transform: scale(1.1);
}

.copy-icon.copied {
    color: #28a745;
    animation: bounce 0.5s;
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}


/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .main-container {
        padding-bottom: 180px; /* More space for controls on mobile */
    }

    .bottom-controls {
        padding: 10px;
        width: calc(100vw - 20px); /* Adjust width for smaller screens */
    }

    .floating-navigation {
        /* Example: Adjust vertical position for tablets */
        transform: translateY(15px);
    }
    body:not(.chord-mode-active) .floating-navigation {
        /* Example: Adjust vertical position for tablets when chords are hidden */
        transform: translateY(45px);
    }

    .key-signature-popup {
        flex-wrap: wrap;
        justify-content: center;
        width: 220px;
    }
}

@media (max-width: 480px) {
    .floating-navigation {
        /* Example: Adjust vertical position for mobile */
        transform: translateY(10px);
    }
    body:not(.chord-mode-active) .floating-navigation {
        /* Example: Adjust vertical position for mobile when chords are hidden */
        transform: translateY(40px);
    }

    .arrow-btn {
        width: 45px;
        height: 45px;
        font-size: 18px;
    }

    .bottom-controls {
        gap: 5px;
    }

    .edit-controls {
        gap: 4px;
    }
}

.color-scheme-toggle {
    border: 1px solid #ccc;
    border-radius: 6px;
    padding: 4px;
    background-color: #f8f9fa;
    width: 32px;
    height: 32px;
}

.color-scheme-toggle .color-scheme-icon {
    width: 100%;
    height: 100%;
}

.color-scheme-toggle.active {
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
}

.notation-container.colors-inactive .note {
    background-color: #cccccc !important;
}

.notation-container.colors-inactive .letter-name {
    color: #888888 !important;
}

/* Add this to your existing CSS file */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.popup-overlay.show {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 500px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.popup-overlay.show .popup-content {
    transform: scale(1);
}

.popup-content h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #333;
}

.popup-content textarea {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-family: inherit;
    font-size: 14px;
    box-sizing: border-box;
    resize: vertical;
}

.popup-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
}

.popup-action-buttons {
    display: flex;
    gap: 10px;
    margin-left: auto;
}

.popup-btn {
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.popup-btn.cancel-btn {
    background-color: #6c757d;
    color: white;
}

.popup-btn.cancel-btn:hover {
    background-color: #5a6268;
}

.popup-btn.submit-btn {
    background-color: #007bff;
    color: white;
}

.popup-btn.submit-btn:hover {
    background-color: #0056b3;
}

.popup-btn:active {
    transform: scale(0.97);
}

.copy-icon {
    cursor: pointer;
    color: #6c757d;
    transition: color 0.3s ease, transform 0.2s ease;
}

.copy-icon:hover {
    color: #007bff;
    transform: scale(1.1);
}

.copy-icon.copied {
    color: #28a745;
    animation: bounce 0.5s;
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}