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

:root {
  --accent: #ff4af8;
  --bg: #0a0a0a;
  --panel-bg: rgba(10, 10, 10, 0.82);
  --text: #f0f0f0;
  --text-dim: #888;
  --radius: 8px;
  --font: system-ui, -apple-system, sans-serif;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

/* Canvas container */
#canvas-container {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover;
  display: block;
  transform-origin: center center;
}

/* Overlay */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  cursor: pointer;
}

.overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  max-width: 90vw;
}

.overlay-content h1 {
  font-family: 'Sixtyfour', sans-serif;
  font-size: clamp(2rem, 7.5vw, 20rem);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1;
  color: #39ff14;
  white-space: nowrap;
  position: relative;
  text-align: center;
  transform: scaleX(var(--scale, 1));
  animation: glitch-p 18s infinite;
}

.overlay-content h1::before,
.overlay-content h1::after {
  --top: 0;
  --left: 0;
  --v-height: 30%;
  --t-cut: calc(var(--top) * 10%);
  --b-cut: calc(var(--t-cut) + var(--v-height));
  content: attr(data-text);
  position: absolute;
  width: 100%;
  left: 0;
  text-align: center;
  transform: translateX(calc(var(--left) * 100%));
  text-shadow: calc(var(--left) * -3em) 0 .02em lime,
               calc(var(--left) * -6em) 0 .02em #ff00e1;
  background-color: var(--bg);
  clip-path: polygon(0% var(--t-cut), 100% var(--t-cut),
                     100% var(--b-cut), 0% var(--b-cut));
}

.overlay-content h1::before {
  animation: glitch-b 3s infinite;
}

.overlay-content h1::after {
  animation: glitch-a 10s infinite;
}

@keyframes glitch-p {
  /* Still for first 70%, then scale bursts */
  0%, 70%  { --scale: 1; }
  72%  { --scale: .87; }
  74%  { --scale: 1.12; }
  76%  { --scale: .93; }
  78%  { --scale: 1.08; }
  81%  { --scale: 1; }
  88%  { --scale: 1; }
  90%  { --scale: 1.18; }
  93%  { --scale: .9; }
  96%  { --scale: 1.05; }
  100% { --scale: 1; }
}

@keyframes glitch-a {
  /* Calm: first 48% */
  0%, 48% { --top: 0; --left: 0; --v-height: 30%; }
  /* Chaotic: 48%-96%, rapid random slices */
  52%  { --left: .005; --v-height: 15%; --top: 0; }
  55%  { --left: .08;  --v-height: 35%; --top: 7; }
  58%  { --left: .01;  --v-height: 10%; --top: 1; }
  62%  { --left: .06;  --v-height: 28%; --top: 9; }
  65%  { --left: .03;  --v-height: 18%; --top: 4; }
  68%  { --left: .083; --v-height: 40%; --top: 6; }
  72%  { --left: .02;  --v-height: 8%;  --top: 2; }
  75%  { --left: .07;  --v-height: 30%; --top: 8; }
  78%  { --left: .04;  --v-height: 22%; --top: 3; }
  82%  { --left: .083; --v-height: 45%; --top: 7; }
  85%  { --left: .01;  --v-height: 12%; --top: 5; }
  88%  { --left: .06;  --v-height: 25%; --top: 9; }
  92%  { --left: .02;  --v-height: 15%; --top: 1; }
  96%  { --left: .005; --v-height: 8%;  --top: 0; }
  /* Return to calm */
  100% { --top: 0; --left: 0; --v-height: 30%; }
}

@keyframes glitch-b {
  /* Calm: first 48% */
  0%, 48% { --top: 0; --left: 0; --v-height: 30%; }
  /* Chaotic: offset timing from glitch-a for organic feel */
  52%  { --left: -.005; --v-height: 15%; --top: 10; }
  55%  { --left: -.07;  --v-height: 35%; --top: 6; }
  58%  { --left: -.01;  --v-height: 12%; --top: 2; }
  62%  { --left: -.05;  --v-height: 28%; --top: 8; }
  65%  { --left: -.03;  --v-height: 20%; --top: 4; }
  68%  { --left: -.083; --v-height: 42%; --top: 7; }
  72%  { --left: -.02;  --v-height: 10%; --top: 3; }
  75%  { --left: -.06;  --v-height: 32%; --top: 9; }
  78%  { --left: -.04;  --v-height: 18%; --top: 5; }
  82%  { --left: -.083; --v-height: 38%; --top: 6; }
  85%  { --left: -.01;  --v-height: 8%;  --top: 1; }
  88%  { --left: -.07;  --v-height: 30%; --top: 8; }
  92%  { --left: -.02;  --v-height: 12%; --top: 2; }
  96%  { --left: -.005; --v-height: 8%;  --top: 0; }
  /* Return to calm */
  100% { --top: 0; --left: 0; --v-height: 30%; }
}

.overlay-content p {
  color: var(--text-dim);
  font-size: 1rem;
}

.overlay.hidden {
  display: none;
}

/* Buttons */
.btn {
  cursor: pointer;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  transition: opacity 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.btn-fab {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 32px;
  border-radius: 32px 32px 0 0;
  background: var(--panel-bg);
  color: var(--text);
  font-size: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: none;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

/* Keep translateX(-50%) when the base .btn:active scale fires */
.btn-fab:active {
  transform: translateX(-50%) scale(0.95);
}

.btn-flip-camera {
  position: fixed;
  top: calc(env(safe-area-inset-top, 0px) + 12px);
  right: 12px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--panel-bg);
  color: var(--text);
  font-size: 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 50;
}

/* Control Panel */
.controls {
  position: fixed;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 40px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  width: min(92vw, 420px);
  transition: opacity 0.25s, transform 0.25s;
  /* TuiCss blue-168 background, retro font scoped to just the controls panel */
  background: #0000a8;
  color: #fff;
  font-family: "Lucida Console", monospace;
  font-size: 14px;
}

/* Override dim-color and system-font rules for all text inside the controls panel */
.controls .btn-back,
.controls .btn-diagnose-link,
.controls .led-label,
.controls .play-track-name,
.controls .time-display,
.controls .share-url {
  color: inherit;
  font-family: inherit;
}
.controls .btn-back:hover,
.controls .btn-diagnose-link:hover,
.controls .share-url:hover { color: #aaaaff; }

.controls.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(12px);
}

/* Let the tui-fieldset inside fill the controls width */
.controls .tui-fieldset {
  width: 100%;
  box-sizing: border-box;
}

/* Pressed state: drop the shadow and push the button down-right */
.controls .tui-button:active {
  transform: translate(2px, 2px) !important;
  box-shadow: none !important;
}

/* TUI-style seek bar: rectangular track, block thumb */
.controls input[type="range"] {
  height: 10px;
  background: #000055;
  border: 1px solid #aaaaff;
  border-radius: 0;
}
.controls input[type="range"]::-webkit-slider-thumb {
  width: 12px;
  height: 18px;
  border-radius: 0;
  background: #ffffff;
  border: none;
  cursor: pointer;
}
.controls input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 18px;
  border-radius: 0;
  background: #ffffff;
  border: none;
  cursor: pointer;
}

.controls-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

input[type="range"] {
  flex: 1;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #fff;
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #fff;
}

/* Mode selector */
#mode-selector {
  display: flex;
  flex-direction: row;
  gap: 10px;
}

.mode-btn {
  flex: 1;
  -webkit-tap-highlight-color: transparent;
}

.mode-btn-live {
  --pulse-rgb: 0, 0, 168;
}

.mode-btn-live-active {
  animation: btn-bpm-pulse var(--beat-ms, 1.2s) ease-in infinite;
}

/* Generic BPM-synced pulse -- color set via --pulse-rgb on the element */
@keyframes btn-bpm-pulse {
  0% {
    background: rgba(var(--pulse-rgb), 0.5);
    box-shadow: 0 0 24px rgba(var(--pulse-rgb), 0.5) inset, 10px 10px #000;
  }
  100% {
    background: rgba(var(--pulse-rgb), 0.0);
    box-shadow: 10px 10px #000;
  }
}

#btn-play-pause {
  --pulse-rgb: 57, 255, 20;
}

.btn-play-active {
  animation: btn-bpm-pulse var(--beat-ms, 1.2s) ease-in infinite;
}


.mode-btn-play {
  --pulse-rgb: 57, 255, 20;
}

.mode-btn-play-active {
  animation: btn-bpm-pulse var(--beat-ms, 1.2s) ease-in infinite;
}

/* Mode content */
.mode-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.btn-back {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-family: var(--font);
  cursor: pointer;
  padding: 0;
  align-self: flex-start;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.15s;
}
.btn-back:hover { color: var(--text); }

/* Play mode */
.play-layout {
  display: flex;
  gap: 10px;
  align-items: center;
}

.play-open-btn {
  flex-shrink: 0;
  align-self: stretch;
}

.play-player {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.play-player .btn-icon {
  padding: 7px 10px;
}

.play-track-name {
  font-size: 0.78rem;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.seek-wrap {
  width: 100%;
}

.time-display {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.player-controls {
  justify-content: center;
  flex-wrap: nowrap;
}

/* BPM indicator row */
.indicator-row {
  align-items: center;
  gap: 8px;
}

.led {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
  transition: background 0.05s, box-shadow 0.05s;
}

.led-peak-on {
  background: #ffb700 !important;
  box-shadow: 0 0 6px 2px rgba(255, 183, 0, 0.7);
}

.led-beat-on {
  background: #39ff14 !important;
  box-shadow: 0 0 6px 2px rgba(57, 255, 20, 0.7);
}

.led-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-right: 6px;
}

.bpm-display {
  margin-left: auto;
  font-size: 0.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  letter-spacing: 0.02em;
}

/* Share panel */
.share-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.share-url {
  color: var(--text-dim);
  font-size: 0.85rem;
  text-decoration: none;
  word-break: break-all;
  text-align: center;
}

.share-url:hover {
  color: var(--text);
}

.qr-code-img {
  display: block;
  border-radius: var(--radius);
  background: #fff;
  padding: 10px;
}

/* Diagnose link */
.btn-diagnose-link {
  background: none;
  border: none;
  color: #555;
  font-size: 0.7rem;
  font-family: var(--font);
  cursor: pointer;
  padding: 2px 0;
  align-self: center;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.15s;
}

.btn-diagnose-link:hover {
  color: var(--text-dim);
}

/* Error message */
.error-msg {
  color: #ff6060;
  font-size: 0.85rem;
}

.hidden {
  display: none !important;
}

/* Responsive tweaks */
@media (max-width: 400px) {
  .controls {
    padding: 12px 14px;
    gap: 10px;
  }

  .btn-icon {
    padding: 8px 12px;
    font-size: 0.8rem;
  }
}