/* Font Fallbacks */
:root {
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-heading: var(--font-display);
}

/* Tools Page Specific Styles */

/* Tools Hero Section */
.tools-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

.tools-hero-content {
  position: relative;
  z-index: 3;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.tools-hero-text {
  color: white;
}

.tools-hero-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.tools-hero-description {
  font-size: 1.25rem;
  line-height: 1.6;
  opacity: 0.95;
  max-width: 800px;
  margin: 0 auto;
}

/* Contrast fixes on Tools page */
.tools-hero-title, .tools-hero-description { color: #ffffff !important; text-shadow: 0 2px 10px rgba(0,0,0,0.25); }
.tool-header h3, .tool-header p { color: #ffffff; }

/* Tools Grid */
.tools-section {
  padding: 4rem 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
}

.tools-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 2rem;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

/* Tool Cards */
.tool-card {
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 1.5rem;
  transition: all 0.4s var(--ease-bounce);
  position: relative;
  overflow: hidden;
}

.tool-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-brutal);
}

.tool-header {
  text-align: center;
  margin-bottom: 2rem;
  color: white;
}

.tool-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  background: var(--primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  box-shadow: var(--shadow-medium);
}

.tool-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tool-header p {
  opacity: 0.8;
  font-size: 0.9rem;
}

.tool-body {
  color: white;
}

/* Clip-on Tuner Styles */
.clipon-tuner {
  display: none !important;
}

/* Compact LCD Tuner (clip-on style) */
.tuner-lcd { 
  display: grid; 
  gap: 12px; 
  justify-items: center; 
}

.lcd-screen-sm {
  width: 280px; /* compact */
  height: 180px;
  border-radius: 14px;
  background: linear-gradient(180deg, #0a3d0a 0%, #0d4a0d 50%, #0a3d0a 100%);
  box-shadow: inset 0 8px 30px rgba(0,0,0,0.45), 0 14px 34px rgba(0,0,0,0.45);
  padding: 14px 16px;
  color: #aef5a8; /* LCD glow */
  position: relative;
  overflow: hidden;
}

/* rounded bezel */
.lcd-screen-sm::before { 
  content:""; 
  position:absolute; inset:-10px; 
  border-radius: 18px; 
  background: linear-gradient(145deg,#2f2f2f,#151515);
  z-index:-1; 
  box-shadow: 0 10px 28px rgba(0,0,0,.5);
}

/* top scale with pointer */
.lcd-header { 
  display:flex; align-items:center; justify-content:space-between; 
  font-family: 'Courier New', monospace; font-weight:700; letter-spacing:.04em; 
  color:#c5ffc0; opacity:.9; user-select:none; 
}
.scale-num { font-size: 12px; opacity:.85; }
.lcd-pointer-wrap { position: relative; flex: 1; margin: 0 10px; height: 30px; }
.lcd-center-mark { position:absolute; left:50%; top:-2px; transform:translateX(-50%); font-size:12px; }
.lcd-pointer { position:absolute; left:50%; top:10px; width:2px; height:18px; background:#b8ffb1; box-shadow:0 0 8px rgba(184,255,177,.8); transform-origin:50% 0; transform:translateX(-50%) rotate(0deg); transition: transform .08s ease-out; }

/* big note row */
.lcd-note-row { display:flex; align-items:flex-end; justify-content:center; gap:12px; margin-top: 26px; }
.lcd-big-note { font-family: 'Courier New', monospace; font-size: 82px; line-height: .9; letter-spacing: -3px; text-shadow: 0 0 12px rgba(174,245,168,.45); }
.lcd-instrument { font-family: 'Inter', system-ui, Arial, sans-serif; font-size: 16px; opacity:.95; margin-bottom: 8px; }

/* Start button */
.tuner-start { 
  display:flex; align-items:center; gap:10px; 
  border:0; border-radius: 999px; padding: 12px 18px; 
  background: linear-gradient(145deg, #2563eb, #1d4ed8);
  color:#fff; font-weight:700; cursor:pointer; box-shadow:0 10px 22px rgba(37,99,235,.35);
}
.tuner-start:hover { filter: brightness(1.05); transform: translateY(-1px); }
.tuner-start:active { transform: translateY(0); }
.tuner-start .tuner-start-label { font-size: 15px; }
.tuner-start i { font-size: 16px; }
.tuner-start.active { background: linear-gradient(145deg, #ef4444, #dc2626); box-shadow: 0 10px 22px rgba(239,68,68,.35); }
.tuner-start.active .tuner-start-label { content: 'Stop Tuner'; }

/* reduce extra legacy UI */
.tuner-display, .tuner-instructions, .string-reference { display:none !important; }

/* LCD Display */
.lcd-display {
  position: relative;
  background: linear-gradient(180deg, #7a9b6e 0%, #8fae7f 50%, #7a9b6e 100%);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 
    inset 0 2px 10px rgba(0,0,0,0.3),
    0 2px 8px rgba(0,0,0,0.2);
}

.lcd-screen {
  background: linear-gradient(180deg, #9db591 0%, #a8c29a 100%);
  border-radius: 8px;
  padding: 1.5rem 1rem;
  text-align: center;
  font-family: 'Courier New', monospace;
  color: #1a3a1a;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.15);
  position: relative;
}

/* Tuning Indicator Bars */
.tuning-bars {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 1rem;
  height: 30px;
  align-items: flex-end;
}

.tuning-bars .bar {
  width: 12px;
  height: 8px;
  background: rgba(26, 58, 26, 0.15);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.tuning-bars .bar.center-bar {
  height: 16px;
}

.tuning-bars .bar.active {
  background: #1a3a1a;
  box-shadow: 0 0 8px rgba(26, 58, 26, 0.5);
}

/* Note Display */
.lcd-note-display {
  font-size: 4rem;
  font-weight: bold;
  line-height: 1;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.lcd-note {
  font-size: 5rem;
  letter-spacing: -0.05em;
}

.lcd-octave {
  font-size: 2rem;
  opacity: 0.8;
}

/* Cents Display */
.lcd-cents {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 0.75rem;
  letter-spacing: 0.1em;
}

/* Frequency Display */
.lcd-frequency {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.hz-label {
  font-size: 0.85rem;
  opacity: 0.7;
}

/* Status Indicators */
.status-indicators {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-size: 1.5rem;
  margin-top: 0.5rem;
}

.status-icon {
  opacity: 0.2;
  transition: all 0.3s ease;
}

.status-icon.active {
  opacity: 1;
  font-weight: bold;
}

.status-icon.in-tune.active {
  color: #1a3a1a;
  font-size: 2rem;
  text-shadow: 0 0 10px rgba(26, 58, 26, 0.5);
}

/* Power LED */
.power-led {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(26, 58, 26, 0.3);
  transition: all 0.3s ease;
}

.power-led.active {
  background: #ff4444;
  box-shadow: 
    0 0 10px rgba(255, 68, 68, 0.8),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
}

/* Tuner Controls */
.tuner-controls {
  display: flex;
  justify-content: center;
}

.power-button {
  background: linear-gradient(145deg, #3a3a3a, #2a2a2a);
  border: 2px solid #1a1a1a;
  border-radius: 50%;
  width: 80px;
  height: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 
    0 4px 12px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
}

.power-button:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 6px 16px rgba(0,0,0,0.4),
    inset 0 1px 0 rgba(255,255,255,0.1);
}

.power-button:active {
  transform: translateY(0);
  box-shadow: 
    0 2px 8px rgba(0,0,0,0.3),
    inset 0 2px 4px rgba(0,0,0,0.2);
}

.power-button.active {
  background: linear-gradient(145deg, #4a4a4a, #3a3a3a);
  border-color: #2563eb;
  box-shadow: 
    0 4px 12px rgba(37, 99, 235, 0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
}

.power-icon {
  font-size: 2rem;
  color: #888;
  transition: color 0.3s ease;
}

.power-button.active .power-icon {
  color: #2563eb;
}

.button-label {
  font-size: 0.65rem;
  color: #666;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-top: 0.25rem;
}

.power-button.active .button-label {
  color: #2563eb;
}

/* String Reference */
.string-reference {
  display: none !important;
}

/* Tuner Instructions */
.tuner-instructions {
  display: none !important;
}

/* Old tuner styles - remove */
.tuner-display {
  display: none;
}

.string-btn {
  display: none;
}

/* Metronome Styles */
.metronome-display {
  text-align: center;
  margin-bottom: 2rem;
}

.bpm-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 2rem;
}

.bpm-display span {
  font-size: 4rem;
  font-weight: 900;
  color: #4facfe;
}

.bpm-display small {
  font-size: 1rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.metronome-visual {
  width: 100px;
  height: 100px;
  margin: 0 auto 2rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.2s ease;
}

.beat-indicator {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent);
  transition: all 0.1s ease;
}

.metronome-controls {
  margin-bottom: 2rem;
}

.bpm-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.2);
  outline: none;
  margin-bottom: 1rem;
}

.bpm-slider::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.tempo-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  opacity: 0.7;
}

.metronome-actions {
  display: flex;
  gap: 1rem;
}

.metronome-actions .btn-3d {
  flex: 1;
  justify-content: center;
  padding: 0.8rem 1rem;
  min-height: 44px;
  min-width: 44px;
}

/* Chord Chart Styles */
.chord-selector {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.chord-select, .scale-select {
  flex: 1;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  font-size: 0.95rem;
}

.chord-select option, .scale-select option {
  background: #2d3748;
  color: white;
}

.chord-display {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.guitar-fretboard, .piano-keyboard {
  margin-bottom: 1.5rem;
}

.chord-info {
  text-align: center;
}

.chord-info h4 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #4facfe;
}

/* Scale Finder Styles */
.scale-selector {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.scale-display {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 1.5rem;
}

.scale-notes-display, .scale-pattern-display {
  text-align: center;
  margin-bottom: 1.5rem;
}

.scale-notes-display h4, .scale-pattern-display h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: #4facfe;
}

.notes, .pattern {
  font-size: 1.1rem;
  font-weight: 600;
  color: #43e97b;
  letter-spacing: 1px;
}

/* Circle of Fifths Styles */
.circle-container {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.circle-of-fifths {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  padding: 1rem;
}

.circle-info {
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 1.5rem;
}

.circle-info h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: #4facfe;
}

/* BPM Calculator Styles */
.bpm-calculator {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group label {
  font-weight: 600;
  color: white;
}

.bpm-input {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 0.75rem;
  border-radius: 12px;
  font-size: 1rem;
}

.bpm-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.bmp-result {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 1.5rem;
  text-align: center;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Excel Template Headers Styles */
.excel-template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.template-field {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 1rem;
  transition: all 0.3s ease;
}

.template-field:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(102, 126, 234, 0.3);
}

.field-name {
  color: #667eea;
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.field-headers {
  color: white;
  opacity: 0.9;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  line-height: 1.4;
}

.template-note {
  background: rgba(67, 233, 123, 0.1);
  border: 1px solid rgba(67, 233, 123, 0.3);
  border-radius: 6px;
  padding: 1rem;
  color: #43e97b;
  font-size: 0.9rem;
  text-align: center;
  margin-top: 1rem;
}

/* Responsive Design for Tools */
@media (max-width: 1200px) {
  .tools-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
}

@media (max-width: 768px) {
  .tools-hero-title {
    font-size: 2.5rem;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .tool-card {
    padding: 1.5rem;
  }
  
  .tuner-strings {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .chord-selector, .scale-selector {
    flex-direction: column;
  }
  
  .metronome-actions {
    flex-direction: column;
  }

  .clipon-tuner {
    max-width: 100%;
    padding: 1.25rem;
  }
  
  .lcd-note-display {
    font-size: 3rem;
  }
  
  .lcd-note {
    font-size: 4rem;
  }
  
  .lcd-octave {
    font-size: 1.5rem;
  }
  
  .tuner-strings {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .tools-hero-title {
    font-size: 2rem;
  }
  
  .tuner-strings {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .note-display {
    font-size: 2.5rem;
  }
  
  .bpm-display span {
    font-size: 3rem;
  }

  .clipon-tuner {
    padding: 1rem;
  }
  
  .lcd-display {
    padding: 1rem;
  }
  
  .lcd-screen {
    padding: 1rem 0.75rem;
  }
  
  .lcd-note-display {
    font-size: 2.5rem;
  }
  
  .lcd-note {
    font-size: 3rem;
  }
  
  .lcd-octave {
    font-size: 1.25rem;
  }
  
  .lcd-cents {
    font-size: 1.25rem;
  }
  
  .tuning-bars {
    height: 24px;
  }
  
  .tuning-bars .bar {
    width: 10px;
    height: 6px;
  }
  
  .tuning-bars .bar.center-bar {
    height: 12px;
  }
  
  .power-button {
    width: 70px;
    height: 70px;
  }
  
  .power-icon {
    font-size: 1.75rem;
  }
  
  .button-label {
    font-size: 0.6rem;
  }
  
  .tuner-strings {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.4rem;
  }
  
  .string-note {
    padding: 0.5rem 0.4rem;
    font-size: 0.85rem;
  }
}

/* iPhone 12/13/14/15 narrow widths */
@media (max-width: 430px) {
  .tools-hero { padding-top: 72px; }
  .tools-hero-title { font-size: 2.25rem; }
  .tools-grid { grid-template-columns: 1fr; gap: 1rem; }
  .tool-card { padding: 1.25rem; }
  .tool-icon { width: 56px; height: 56px; border-radius: 14px; font-size: 1.25rem; }
  .note-display { font-size: 2.25rem; }
  .bpm-display span { font-size: 2.5rem; }
  .string-btn { padding: 0.6rem; font-size: 0.95rem; }
  .tuner-display { width: 220px; height: 220px; }
  .note-display { font-size: 2rem; }
  .lcd-screen-sm { width: 240px; height: 160px; padding: 12px; }
  .lcd-big-note { font-size: 68px; }
  .tuner-start { padding: 10px 16px; }
}

/* Button polish */
.btn-3d {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.btn-primary-3d { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; }
.btn-secondary-3d { background: rgba(255,255,255,0.16); color: #fff; border: 1px solid rgba(255,255,255,0.25); }
.btn-3d:active { transform: translateY(1px); }

/* PWA Install Button */
.install-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--primary-color, #4a90e2);
    color: white;
    border: none;
    border-radius: 8px;
    font-family: var(--font-primary);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 16px;
    width: 100%;
}

.install-button:hover {
    background: var(--primary-color-dark, #357abd);
}

.install-button i {
    font-size: 1.1em;
}

#tuner-tool .tool-header { margin-bottom: 1rem; }
#tuner-tool .tool-body { padding-top: 0.25rem; }