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

html {
  height: 100%;
  background: #050b13;
  color: #e4edfa;
  font-family: system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1.25rem, 2vw, 2rem);
}

/* ── track player ────────────────────────────────────────── */

.track-player {
  display: contents;
}

.track-player__backdrop {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(53, 92, 160, 0.28), transparent 34%),
    linear-gradient(180deg, rgba(5, 11, 19, 0.16), rgba(5, 11, 19, 0.88) 58%, rgba(3, 7, 12, 0.96));
  pointer-events: none;
}

.track-player__panel {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.4rem;
  width: min(58rem, 100%);
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid rgba(188, 218, 255, 0.2);
  border-radius: 1.5rem;
  background: rgba(7, 15, 24, 0.8);
  backdrop-filter: blur(20px);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
}

/* ── no-signal interlude ─────────────────────────────────── */

.track-player__no-signal {
  position: fixed;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #050505;
}

.track-player__no-signal[hidden] { display: none; }

.track-player__no-signal-noise {
  position: absolute;
  inset: -10%;
  background-image:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 2px),
    radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.12), transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.08), transparent 55%);
  filter: contrast(1.4) brightness(0.9);
  mix-blend-mode: screen;
  animation: hc-track-noise 0.18s steps(4) infinite;
  opacity: 0.85;
}

.track-player__no-signal-label {
  position: relative;
  width: 75%;
  text-align: center;
  font-family: system-ui, sans-serif;
  font-size: clamp(1.1rem, 3.2vmin, 2rem);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.88);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.7), 0 0 14px rgba(255, 255, 255, 0.15);
  padding: 0.4rem 0.9rem;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.track-player__skip {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  z-index: 1;
  padding: 0.7rem 1.6rem;
  font-family: system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.track-player__skip:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
}

/* ── header ──────────────────────────────────────────────── */

.track-player__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.track-player__eyebrow,
.track-player__label,
.track-player__track-path,
.track-player__track-file {
  font-family: system-ui, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.track-player__eyebrow {
  color: rgba(193, 218, 255, 0.68);
  font-size: 0.76rem;
}

.track-player__title {
  margin: 0;
  width: 100%;
  color: rgba(228, 237, 251, 0.7);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(1.2rem, 3.5vw, 2.9rem);
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.track-player__copy {
  margin: 0;
  max-width: 48rem;
  color: rgba(228, 237, 251, 0.8);
  font-size: clamp(1rem, 2vw, 1.08rem);
  line-height: 1.6;
}

/* ── current track ───────────────────────────────────────── */

.track-player__current {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
  padding: 1rem 0 0;
  border-top: 1px solid rgba(188, 218, 255, 0.14);
}

.track-player__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  grid-column: 1 / -1;
  color: rgba(193, 218, 255, 0.55);
  font-size: 0.7rem;
}


.track-player__track-title {
  margin-top: 0.35rem;
  color: #f8fbff;
  font-size: clamp(1.25rem, 3vw, 1.8rem);
  font-weight: 600;
}

.track-player__track-file {
  margin-top: 0.3rem;
  color: rgba(193, 218, 255, 0.58);
  font-size: 0.74rem;
  word-break: break-word;
}

/* ── audio player controls ───────────────────────────────── */

.track-player__controls {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  min-width: min(22rem, 78vw);
  outline: none;
}

.audio-player__play {
  flex-shrink: 0;
  width: 2.35rem;
  height: 2.35rem;
  display: grid;
  place-items: center;
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  padding: 0;
  transition: transform 0.12s ease, opacity 0.15s ease;
  opacity: 0.85;
}

.audio-player__play svg {
  width: 1.4rem;
  height: 1.4rem;
  fill: currentColor;
}

.audio-player__play:hover { opacity: 1; }
.audio-player__play:active { transform: scale(0.95); }

.audio-player__separator {
  flex-shrink: 0;
  width: 1px;
  height: 1.4rem;
  background: rgba(255, 255, 255, 0.22);
}

.audio-player__scrub {
  flex: 1;
  position: relative;
  height: 1.5rem;
  display: flex;
  align-items: center;
  cursor: pointer;
  touch-action: none;
}

.audio-player__scrub:hover .audio-player__thumb,
.audio-player__scrub:active .audio-player__thumb {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.audio-player__track {
  position: relative;
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 2px;
}

.audio-player__buffered {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.22);
  border-radius: inherit;
  pointer-events: none;
}

.audio-player__progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.92);
  border-radius: inherit;
  pointer-events: none;
}

.audio-player__thumb {
  position: absolute;
  top: 50%;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
  transform: translate(-50%, -50%) scale(0.7);
  opacity: 0.85;
  transition: opacity 0.15s ease, transform 0.15s ease;
  pointer-events: none;
}

/* ── track list ──────────────────────────────────────────── */

.track-player__list {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}

.track-player__track {
  display: grid;
  gap: 0.35rem;
  justify-items: start;
  width: 100%;
  min-height: 3.2rem;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(188, 218, 255, 0.12);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.03);
  color: inherit;
  cursor: pointer;
  text-align: left;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.14s ease, border-color 0.14s ease, background 0.14s ease, box-shadow 0.14s ease;
}

.track-player__track:hover,
.track-player__track:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(198, 226, 255, 0.42);
  background: linear-gradient(180deg, rgba(158, 196, 255, 0.12), rgba(255, 255, 255, 0.05));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
  outline: none;
}

.track-player__track:active { transform: scale(0.98); }

.track-player__track.is-active {
  border-color: rgba(222, 234, 255, 0.54);
  background: linear-gradient(180deg, rgba(158, 196, 255, 0.14), rgba(255, 255, 255, 0.04));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}


.track-player__track-name {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: #f7fbff;
  font-size: 1rem;
  font-weight: 600;
}


.track-player__track-path {
  color: rgba(193, 218, 255, 0.58);
  font-size: 0.7rem;
  word-break: break-word;
}

/* ── status messages ─────────────────────────────────────── */

.track-player__status {
  padding: 1rem 1.1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(232, 239, 249, 0.82);
  font-size: 0.96rem;
}

.track-player__status[hidden] { display: none; }

.track-player__status--error {
  border: 1px solid rgba(255, 170, 170, 0.28);
  color: rgba(255, 212, 212, 0.92);
}

/* ── animations ──────────────────────────────────────────── */

@keyframes hc-track-noise {
  0%   { transform: translate(0, 0); }
  25%  { transform: translate(-2%, 1%); }
  50%  { transform: translate(1%, -2%); }
  75%  { transform: translate(-1%, 2%); }
  100% { transform: translate(2%, -1%); }
}

/* ── responsive ──────────────────────────────────────────── */

@media (min-width: 760px) {
  .track-player__current {
    align-items: end;
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (max-width: 759px) {
  body {
    align-items: flex-start;
    padding: 1rem;
  }

  .track-player__panel {
    width: 100%;
    border-radius: 1rem;
  }

  .track-player__title {
    font-size: clamp(1rem, 4vw, 1.6rem);
  }

  .track-player__label {
    flex-wrap: wrap;
    gap: 0.3rem;
  }

  .track-player__list {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .track-player__track {
    min-height: 3.5rem;
    padding: 1rem;
  }
}