/* ============================================================
   CDJ DISPLAY — Meta Display HUD
   600 × 600 viewport, content only fills TOP 300px.
   Bottom 300px stays pure #000 so it reads as transparent
   on the additive waveguide. DJ-booth telemetry aesthetic:
   pure black + cyan + jade green + amber accents.
   ============================================================ */

:root {
  --bg:          #000000;
  --panel:       #06080f;
  --panel-line:  #1c2238;
  --line:        #232a40;
  --line-dim:    #14182a;

  --text:        #ffffff;
  --text-2:      #c4cce6;
  --text-3:      #7a85ad;
  --text-4:      #4a5275;

  --cyan:        #4dd8ff;
  --cyan-hi:     #8be8ff;
  --cyan-glow:   rgba(77, 216, 255, 0.55);

  --jade:        #5cf28a;
  --jade-glow:   rgba(92, 242, 138, 0.55);

  --amber:       #ffb84d;
  --amber-glow:  rgba(255, 184, 77, 0.55);

  --red:         #ff5e7e;
  --red-glow:    rgba(255, 94, 126, 0.55);
}

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

html, body {
  width: 600px;
  height: 600px;
  overflow: hidden;
  background: #000;
  color: var(--text);
  font-family: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.mono {
  font-family: "JetBrains Mono", "SF Mono", "Courier New", monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

.hidden { display: none !important; }

/* ============================================================
   APP: only the top 300px is used. Bottom half stays #000.
   ============================================================ */
#app {
  width: 600px;
  height: 300px;
  padding: 6px 12px 4px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 4px;
  position: relative;
}

/* ============================================================
   TOP BAR
   ============================================================ */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-3);
}
.topbar .brand {
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan-glow);
}
.topbar .subnet { color: var(--text-3); }
.topbar .clock  { color: var(--text-2); }

/* ============================================================
   DECKS — two cards side by side
   ============================================================ */
.decks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  min-height: 0;
}

.deck {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 4px;
  padding: 6px 9px 7px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  position: relative;
}

.deck-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-2);
}
.deck-model { font-weight: 800; color: var(--text); }
.deck-num   { color: var(--text-3); }
.deck-tag {
  margin-left: auto;
  padding: 2px 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  border-radius: 3px;
  background: rgba(255, 184, 77, 0.14);
  color: var(--amber);
  border: 1px solid rgba(255, 184, 77, 0.55);
}
.deck-tag.sync {
  background: rgba(77, 216, 255, 0.12);
  color: var(--cyan);
  border-color: rgba(77, 216, 255, 0.55);
}
.deck-tag.ending {
  background: rgba(255, 94, 126, 0.18);
  color: var(--red);
  border-color: rgba(255, 94, 126, 0.75);
  text-shadow: 0 0 6px var(--red-glow);
  animation: endBlink 0.7s steps(2) infinite;
}
@keyframes endBlink { 50% { opacity: 0.28; } }
.deck-tag.hidden-tag { visibility: hidden; }
.deck-ip { color: var(--text-3); font-size: 13px; font-weight: 500; }

/* status row: LED + label + animated bar */
.deck-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 0;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--jade);
}
.status-led {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 8px var(--jade-glow);
}
.status.paused { color: var(--amber); }
.status.paused .status-led { background: var(--amber); box-shadow: 0 0 8px var(--amber-glow); }
.status.cue    { color: var(--red); }
.status.cue    .status-led { background: var(--red);   box-shadow: 0 0 8px var(--red-glow); animation: cueBlink 0.9s steps(2) infinite; }
@keyframes cueBlink { 50% { opacity: 0.25; } }

.deck-bar {
  flex: 1;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    transparent 0, transparent 5px,
    var(--line) 5px, var(--line) 6px
  );
  position: relative;
  overflow: hidden;
}
.deck-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  width: var(--play-pct, 0%);
  background: linear-gradient(90deg, var(--cyan), var(--cyan-hi));
  box-shadow: 0 0 6px var(--cyan-glow);
  opacity: 0.85;
}
.deck-bar.ending::after {
  background: linear-gradient(90deg, var(--amber), var(--red));
  box-shadow: 0 0 10px var(--red-glow);
  animation: endBlink 0.7s steps(2) infinite;
}

/* BPM row */
.bpm-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 8px;
  margin-top: 0;
}
.bpm {
  font-size: 58px;
  font-weight: 700;
  line-height: 0.88;
  color: var(--text);
  letter-spacing: -0.02em;
}
.bpm-sub {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--text-3);
  margin-top: 4px;
}
.beat-stack {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 5px;
}
.beat-dots {
  display: flex;
  gap: 6px;
}
.beat-dots i {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid var(--line);
  transition: background 60ms linear, box-shadow 60ms linear, transform 60ms linear;
}
.beat-dots i.on {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 10px var(--cyan-glow);
}
.beat-dots i.downbeat.on {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 12px var(--amber-glow);
  transform: scale(1.18);
}
.beat-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-3);
}

.track-line {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}

.pitch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--text-3);
  margin-top: auto;
}
.pitch-label { color: var(--text-3); }
.pitch-bar {
  flex: 1;
  position: relative;
  height: 5px;
  background: var(--line-dim);
  border-radius: 3px;
}
.pitch-center {
  position: absolute;
  left: 50%; top: -2px; bottom: -2px;
  width: 1px;
  background: var(--line);
}
.pitch-thumb {
  position: absolute;
  top: -4px;
  width: 4px;
  height: 13px;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan-glow);
  transform: translateX(-50%);
  left: 50%;
}
.pitch-val {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  min-width: 54px;
  text-align: right;
}

/* ============================================================
   MIXER — channel faders + crossfader
   ============================================================ */
.mixer {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: stretch;
  border-top: 1px solid var(--line);
  padding-top: 6px;
}

.channels {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.ch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.ch-fader {
  width: 7px;
  height: 48px;
  background: var(--line-dim);
  border-radius: 3px;
  position: relative;
}
.ch-thumb {
  position: absolute;
  left: -3px;
  right: -3px;
  height: 5px;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan-glow);
  border-radius: 2px;
  transition: bottom 140ms ease;
}
.ch-fader::before {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: var(--fader-pct, 0%);
  background: linear-gradient(180deg, rgba(77,216,255,0.45), rgba(77,216,255,0.10));
  border-radius: 0 0 3px 3px;
}
.ch.dim .ch-thumb {
  background: var(--text-4);
  box-shadow: none;
}
.ch.dim .ch-fader::before { display: none; }
.ch-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.10em;
  color: var(--text-3);
}
.ch.dim .ch-label { color: var(--text-4); }

.xfade-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.xfade-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-3);
}
.xfade-state {
  color: var(--text);
  font-size: 13px;
}
.xfade-state.active { color: var(--amber); text-shadow: 0 0 6px var(--amber-glow); }
.xfade {
  position: relative;
  height: 10px;
  background: var(--line-dim);
  border-radius: 5px;
  border: 1px solid var(--line);
}
.xfade-tick {
  position: absolute;
  top: -2px;
  width: 1px;
  height: calc(100% + 4px);
  background: var(--line);
  transform: translateX(-50%);
}
.xfade-thumb {
  position: absolute;
  top: -5px;
  width: 18px;
  height: 18px;
  background: var(--cyan);
  border: 1px solid var(--cyan-hi);
  border-radius: 3px;
  transform: translateX(-50%);
  box-shadow: 0 0 10px var(--cyan-glow);
  transition: left 140ms ease, background 120ms linear;
}
.xfade-thumb.active { background: var(--amber); border-color: var(--amber); box-shadow: 0 0 10px var(--amber-glow); }
.xfade-foot {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--text-3);
}
.xfade-foot span.hot { color: var(--amber); }