/* Dark theme, visualizers, layout */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: #0a0a0f;
  color: #e0e0e8;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* ── Start Overlay ── */

#start-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 15, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  cursor: pointer;
  transition: opacity 0.4s ease;
}

#start-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

#start-overlay h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #d4a843, #e8c96a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#start-overlay p {
  font-size: 1.1rem;
  color: #888;
  margin-bottom: 2rem;
}

.start-button {
  padding: 1rem 3rem;
  font-size: 1.2rem;
  font-weight: 600;
  background: linear-gradient(135deg, #d4a843, #b8912e);
  color: #0a0a0f;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

.start-button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(212, 168, 67, 0.4);
}

/* ── Main Layout ── */

#app {
  width: 100%;
  max-width: 900px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex: 1;
}

.header {
  text-align: center;
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  background: linear-gradient(135deg, #d4a843, #e8c96a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Blow Indicator ── */

#blow-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #333;
  margin: 0.5rem auto;
  transition: background 0.1s, box-shadow 0.1s;
}

#blow-indicator.active {
  background: #4ade80;
  box-shadow: 0 0 12px rgba(74, 222, 128, 0.6);
}

/* ── Mic Level ── */

.mic-level-container {
  background: #1a1a24;
  border-radius: 6px;
  height: 12px;
  overflow: hidden;
  border: 1px solid #2a2a38;
}

.mic-level-fill {
  height: 100%;
  width: 0%;
  border-radius: 6px;
  transition: width 0.05s linear;
}

.mic-level-fill.level-green {
  background: linear-gradient(90deg, #22c55e, #4ade80);
}

.mic-level-fill.level-amber {
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

.mic-level-fill.level-red {
  background: linear-gradient(90deg, #ef4444, #f87171);
}

/* ── Note Display ── */

.note-display-container {
  text-align: center;
  padding: 1.5rem 0;
}

#note-display {
  font-size: 4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #e0e0e8;
  transition: text-shadow 0.15s;
  min-height: 5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

#note-display.glow {
  color: #fbbf24;
  text-shadow: 0 0 20px rgba(251, 191, 36, 0.5), 0 0 60px rgba(251, 191, 36, 0.2);
}

/* ── Note Strip ── */

.note-strip-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.note-strip-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #666;
}

#note-strip-container {
  position: relative;
  height: 80px;
  background: #12121c;
  border-radius: 10px;
  border: 1px solid #2a2a38;
  overflow: hidden;
  cursor: crosshair;
}

#note-strip {
  position: absolute;
  inset: 0;
  display: flex;
}

.note-segment {
  position: absolute;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid #1e1e2e;
  transition: background 0.08s;
}

.note-segment.black {
  background: rgba(255, 255, 255, 0.03);
}

.note-segment.active {
  background: rgba(212, 168, 67, 0.15);
}

.note-label {
  font-size: 0.65rem;
  color: #555;
  pointer-events: none;
}

.note-segment.active .note-label {
  color: #d4a843;
}

#note-highlight {
  position: absolute;
  top: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(212, 168, 67, 0.25), rgba(212, 168, 67, 0.08));
  border-left: 2px solid #d4a843;
  border-right: 2px solid #d4a843;
  opacity: 0;
  transition: left 0.05s linear, opacity 0.1s;
  pointer-events: none;
}

/* ── Controls ── */

.controls {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
  padding: 1rem;
  background: #12121c;
  border-radius: 10px;
  border: 1px solid #2a2a38;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.control-group label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #666;
}

.control-group select,
.control-group input[type="range"] {
  background: #1a1a24;
  color: #e0e0e8;
  border: 1px solid #2a2a38;
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  outline: none;
}

.control-group select:focus,
.control-group input[type="range"]:focus {
  border-color: #d4a843;
}

.control-group select {
  cursor: pointer;
  min-width: 120px;
}

.sensitivity-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 120px;
  height: 6px;
  background: #2a2a38;
  border-radius: 3px;
  border: none;
  padding: 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #d4a843;
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #d4a843;
  cursor: pointer;
  border: none;
}

#sensitivity-value {
  font-size: 0.85rem;
  color: #888;
  min-width: 2em;
  text-align: right;
}

/* ── Star Tracker ── */

.star-tracker {
  display: flex;
  justify-content: center;
  padding: 0.5rem 0;
}

.star-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  background: #1a1a24;
  border: 1px solid #2a2a38;
  border-radius: 8px;
  color: #e0e0e8;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.star-badge:hover {
  border-color: #d4a843;
  box-shadow: 0 0 12px rgba(212, 168, 67, 0.15);
}

.star-icon {
  color: #fbbf24;
}

.star-count {
  padding-left: 0.4rem;
  border-left: 1px solid #2a2a38;
  color: #888;
  font-variant-numeric: tabular-nums;
}

/* ── Overlay Bottom (star tracker + social links) ── */

.overlay-bottom {
  position: absolute;
  bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.overlay-links {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}

.overlay-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: #666;
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s;
}

.overlay-links a:hover {
  color: #d4a843;
}

.overlay-links svg {
  flex-shrink: 0;
}

/* ── Footer ── */

.footer {
  text-align: center;
  font-size: 0.7rem;
  color: #444;
  padding: 1rem 0;
}

/* ── Responsive ── */

@media (max-width: 600px) {
  #app {
    padding: 1rem;
  }

  #note-display {
    font-size: 3rem;
  }

  #note-strip-container {
    height: 60px;
  }

  .controls {
    gap: 1rem;
  }
}