/* Guitooner Stylesheet - Premium Dark Glassmorphic Design */

:root {
  --bg-primary: #000000;
  --card-bg: rgba(16, 20, 35, 0.65);
  --card-border: rgba(255, 255, 255, 0.08);
  --text-main: #f3f4f6;
  --text-muted: #8e9aaf;
  
  /* Tuning Status Accents */
  --color-flat: #00d2ff;
  --color-sharp: #ff2a5f;
  --color-in-tune: #00f097;
  --color-default: #707e94;
  
  /* Current active color state, updated dynamically via JS if needed, default is default */
  --current-accent: var(--color-default);
  --current-glow: rgba(112, 126, 148, 0.3);
  
  /* Fonts */
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-ui: 'Outfit', sans-serif;
  --font-digital: 'Orbitron', monospace;
}

/* Reset and Global Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  position: relative;
  padding: 20px;
}

/* Ambient glow blobs in the background */
.background-glows {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.glow {
  position: absolute;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
}

.glow-1 {
  background: radial-gradient(circle, #00f097 0%, transparent 70%);
  top: -10%;
  left: -10%;
}

.glow-2 {
  background: radial-gradient(circle, #00d2ff 0%, transparent 70%);
  bottom: -10%;
  right: -10%;
}

/* Layout container */
.app-container {
  width: 100%;
  max-width: 500px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 1;
}

header {
  text-align: center;
  margin-bottom: 5px;
}

.logo-text {
  font-family: var(--font-ui);
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: #fff;
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.logo-text .highlight {
  background: linear-gradient(90deg, #ff8c00, #ffc000);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* Card layout with Glassmorphism */
.tuner-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 
              inset 0 1px 0 rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.tuner-card.active-tuning {
  border-color: rgba(var(--current-glow), 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 
              0 0 30px var(--current-glow),
              inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* Mode Selector Switch */
.mode-selector {
  display: flex;
  background: rgba(255, 255, 255, 0.05);
  padding: 4px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.mode-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  padding: 10px 0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mode-btn:hover {
  color: #fff;
}

.mode-btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Tuner Gauge Display */
.tuner-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  position: relative;
}

.gauge-wrapper {
  position: relative;
  width: 100%;
  max-width: 320px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.gauge-svg {
  width: 100%;
  height: auto;
}

.gauge-arc-bg {
  stroke: rgba(255, 255, 255, 0.05);
}

.gauge-arc-target {
  stroke: var(--color-in-tune);
  opacity: 0.3;
  transition: opacity 0.3s ease;
}

.active-tuning .gauge-arc-target {
  opacity: 0.7;
}

#needle-group {
  transform-origin: 100px 100px;
  transition: transform 0.15s cubic-bezier(0.25, 0.8, 0.25, 1.15);
}

.gauge-needle {
  stroke: var(--current-accent);
  filter: drop-shadow(0 0 4px var(--current-accent));
  transition: stroke 0.3s ease;
}

.gauge-center {
  fill: #161c2c;
  stroke: var(--current-accent);
  stroke-width: 2;
  transition: stroke 0.3s ease;
}

/* Digital Note Output Middle Column */
.note-display-center {
  min-width: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.note-letter-meta {
  font-family: var(--font-digital);
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--current-accent);
  text-shadow: 0 0 15px var(--current-glow);
  transition: color 0.3s ease, text-shadow 0.3s ease;
  margin-top: 4px;
}

.tuner-meta {
  display: flex;
  width: 100%;
  justify-content: space-around;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 15px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.meta-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.meta-value {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  transition: color 0.3s ease;
}

.meta-value.status-flat {
  color: var(--color-flat);
}

.meta-value.status-sharp {
  color: var(--color-sharp);
}

.meta-value.status-in-tune {
  color: var(--color-in-tune);
}

/* Fretboard Strings Panel */
.fretboard-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-instruction {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

.fretboard {
  background: linear-gradient(180deg, #181d2a 0%, #0e121e 100%);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* Simulated wood/metal fret marker */
.fretboard::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  width: 2px;
  height: 100%;
  background: rgba(255, 255, 255, 0.08);
}

.fretboard::after {
  content: '';
  position: absolute;
  top: 0;
  right: 20%;
  width: 2px;
  height: 100%;
  background: rgba(255, 255, 255, 0.08);
}

.guitar-layout {
  height: 180px;
}

.bass-layout {
  height: 140px;
}

/* Indivdual String Wrapper */
.string-row {
  display: flex;
  align-items: center;
  width: 100%;
  height: 24px;
  position: relative;
  cursor: pointer;
  user-select: none;
}

/* Note button badge */
.string-badge {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-right: 15px;
  transition: all 0.2s ease;
  z-index: 2;
}

.string-row:hover .string-badge {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.string-row.active .string-badge {
  background: var(--current-accent);
  color: #0b0f19;
  border-color: var(--current-accent);
  box-shadow: 0 0 10px var(--current-glow);
}

/* Visual Line representing the Guitar/Bass string */
.string-line {
  flex: 1;
  height: 2px; /* Set dynamically */
  background: linear-gradient(90deg, #515e75 0%, #8598b0 50%, #515e75 100%);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  position: relative;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.string-row.active .string-line {
  background: linear-gradient(90deg, var(--current-accent) 0%, #fff 50%, var(--current-accent) 100%);
  box-shadow: 0 0 8px var(--current-glow);
}

/* Animation for pluck vibration */
@keyframes string-vibrate {
  0% { transform: translateY(0); }
  10% { transform: translateY(-3px); }
  20% { transform: translateY(2.5px); }
  30% { transform: translateY(-2px); }
  40% { transform: translateY(1.5px); }
  50% { transform: translateY(-1px); }
  65% { transform: translateY(0.5px); }
  80% { transform: translateY(-0.3px); }
  100% { transform: translateY(0); }
}

.string-row.plucked .string-line {
  animation: string-vibrate 0.4s ease-out;
}

/* Fretboard Control Buttons */
.fretboard-controls {
  display: flex;
  justify-content: center;
  margin-top: 5px;
}

.control-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  color: var(--text-muted);
  padding: 8px 16px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.control-btn.active {
  background: rgba(255, 140, 0, 0.1);
  border-color: rgba(255, 140, 0, 0.35);
  color: #ff9f1c;
  box-shadow: 0 0 10px rgba(255, 140, 0, 0.08);
}

/* Oscilloscope Visualizer */
.visualizer-container {
  width: 100%;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.03);
  overflow: hidden;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#canvas-visualizer {
  width: 100%;
  height: 100%;
  display: block;
}

/* Action button for Mic authorization */
.action-container {
  display: flex;
  justify-content: center;
}

.primary-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #ff8c00; /* Solid orange, no gradient */
  border: none;
  border-radius: 14px;
  color: #0b0f19;
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 14px 28px;
  width: 100%;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.primary-btn:hover {
  transform: translateY(-2px);
  background: #ff9f1c; /* Solid yellow-orange, no gradient */
  box-shadow: 0 10px 25px rgba(255, 140, 0, 0.35);
}

.primary-btn:active {
  transform: translateY(1px);
}

.pulse-glow {
  animation: pulse-glow-anim 2s infinite;
}

@keyframes pulse-glow-anim {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 140, 0, 0.4);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(255, 140, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 140, 0, 0);
  }
}

.primary-btn.connected {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  cursor: default;
  animation: none;
}

.primary-btn.connected:hover {
  transform: none;
  box-shadow: none;
}

/* Footer styling */
footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 10px 0;
}

footer a {
  color: var(--color-flat);
  text-decoration: none;
  transition: color 0.2s ease;
}

footer a:hover {
  color: var(--color-in-tune);
  text-decoration: underline;
}

/* Mobile Responsiveness tweaks */
@media (max-width: 480px) {
  body {
    padding: 10px;
  }
  
  .tuner-card {
    padding: 18px;
    gap: 18px;
    border-radius: 20px;
  }
  
  .note-letter-meta {
    font-size: 1.8rem;
  }
  
  .guitar-layout {
    height: 160px;
  }

  .bass-layout {
    height: 120px;
  }
  
  .string-badge {
    width: 22px;
    height: 22px;
    font-size: 0.75rem;
    margin-right: 10px;
  }
}