@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Rajdhani:wght@300;400;500;600;700&display=swap');

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

:root {
  --primary: #00f0ff;
  --primary-dim: #087887;
  --secondary: #ff2d75;
  --accent: #b44dff;
  --warning: #ffcc00;
  --bg-dark: #05080f;
  --bg-panel: rgba(10, 14, 24, 0.9);
  --border: rgba(0, 240, 255, 0.18);
  --text: #e7f9ff;
  --text-dim: #7a8d99;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-dark);
  font-family: 'Rajdhani', 'Courier New', monospace;
  color: var(--text);
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  position: fixed;
  inset: 0;
  z-index: 1;
}

#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
}

#hud-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 12;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  background: linear-gradient(180deg, rgba(5, 8, 15, 0.72) 0%, transparent 100%);
}

#logo {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(22px, 4vw, 44px);
  font-weight: 900;
  letter-spacing: 8px;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--secondary), var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 32px rgba(0, 240, 255, 0.18);
}

#hud-stats {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 6px;
  font-family: 'Orbitron', sans-serif;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
}

#hud-stats span {
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.28);
}

#hud-bottom {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 12;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px 22px;
  padding: 14px 20px 16px;
  background: linear-gradient(0deg, rgba(5, 8, 15, 0.96) 0%, rgba(5, 8, 15, 0.7) 58%, transparent 100%);
  pointer-events: auto;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.control-group label,
.slider-wrap label {
  font-family: 'Orbitron', sans-serif;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-dim);
}

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

.tempo-wrap input[type='range'] {
  width: 118px;
}

input[type='range'] {
  -webkit-appearance: none;
  width: 92px;
  height: 4px;
  border-radius: 2px;
  background: rgba(0, 240, 255, 0.16);
  outline: none;
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.55);
  cursor: pointer;
}

input[type='range']::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.55);
  cursor: pointer;
}

.slider-value,
#bpm-display {
  font-family: 'Orbitron', sans-serif;
  font-size: 10px;
  color: var(--primary-dim);
  min-width: 48px;
  text-align: center;
}

#btn-play,
.btn-action,
select {
  min-height: 34px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.4);
  color: var(--text);
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

#btn-play {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--primary);
  font-size: 15px;
  flex: 0 0 auto;
}

#btn-play:hover,
.btn-action:hover,
select:hover {
  border-color: rgba(0, 240, 255, 0.45);
  color: var(--primary);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.16);
}

#btn-play:focus-visible,
.btn-action:focus-visible,
select:focus-visible,
input[type='range']:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

select {
  appearance: none;
  min-width: 112px;
  padding: 6px 28px 6px 10px;
}

select option {
  background: #0b0f18;
  color: var(--text);
}

#beat-indicator {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 0;
}

#beat-indicator .beat-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.08s, box-shadow 0.08s, transform 0.08s;
}

#beat-indicator .beat-dot.active {
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary);
  transform: scale(1.25);
}

.action-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-action {
  padding: 7px 12px;
  text-transform: uppercase;
}

.btn-action.danger:hover {
  border-color: rgba(255, 45, 117, 0.55);
  color: var(--secondary);
  box-shadow: 0 0 12px rgba(255, 45, 117, 0.18);
}

#hint {
  max-width: 280px;
  font-family: 'Orbitron', sans-serif;
  font-size: 9px;
  letter-spacing: 1.5px;
  line-height: 1.4;
  color: var(--text-dim);
  text-transform: uppercase;
  text-align: center;
}

@media (max-width: 900px) {
  #hud-header {
    padding: 14px 14px 28px;
  }

  #hud-stats {
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
  }

  #hud-bottom {
    gap: 10px 12px;
    padding: 12px;
  }

  .transport-panel {
    width: 100%;
    justify-content: center;
  }

  .control-group {
    gap: 6px;
  }

  input[type='range'] {
    width: 82px;
  }

  select {
    min-width: 104px;
  }

  #hint {
    width: 100%;
    max-width: none;
  }
}

@media (max-width: 560px) {
  #logo {
    letter-spacing: 4px;
  }

  #hud-stats {
    display: none;
  }

  .slider-wrap label,
  .control-group label {
    font-size: 9px;
    letter-spacing: 1.5px;
  }

  .btn-action,
  select {
    min-height: 40px;
  }
}