:root {
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', system-ui, sans-serif;
  --label: rgb(255 255 255 / 0.96);
  --label-secondary: rgb(255 255 255 / 0.6);
  --tint: #0a84ff;

  --glass-fill: rgb(255 255 255 / 0.08);
  --glass-blur: blur(28px) saturate(180%) brightness(1.05);
  --glass-edge: rgb(255 255 255 / 0.55);
  --glass-shadow: 0 12px 40px rgb(0 0 0 / 0.45), 0 2px 6px rgb(0 0 0 / 0.25);
  --control-fill: rgb(255 255 255 / 0.1);
  --control-fill-hover: rgb(255 255 255 / 0.18);

  --radius-bar: 30px;
  --spring: cubic-bezier(0.32, 0.72, 0, 1);

  --cover: clamp(170px, min(46vh, 40vw), 440px);
  --gap: calc(var(--cover) * 0.6);
  --step: calc(var(--cover) * 0.15);
  --depth: calc(var(--cover) * 0.55);
  --angle: 68deg;
}

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

html,
body {
  margin: 0;
  height: 100%;
}

body {
  background: #000;
  color: var(--label);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button,
input {
  font: inherit;
  color: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
  flex: none;
}

.player {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  height: 100dvh;
  padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 12px
    max(12px, env(safe-area-inset-left));
}

.ambient {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: #050505;
}

.ambient::before {
  content: '';
  position: absolute;
  inset: -20%;
  background: var(--ambient-image, none) center / cover no-repeat;
  filter: blur(90px) saturate(1.4);
  opacity: 0.55;
}

.ambient::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 70% at 50% 40%, transparent, rgb(0 0 0 / 0.75));
}

.glass {
  position: relative;
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  box-shadow:
    inset 0 1px 1px rgb(255 255 255 / 0.25),
    inset 0 -1px 1px rgb(255 255 255 / 0.06),
    var(--glass-shadow);
}

.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    var(--glass-edge),
    rgb(255 255 255 / 0.08) 30%,
    rgb(255 255 255 / 0.04) 65%,
    rgb(255 255 255 / 0.3)
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

.toolbar {
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 10px 14px;
  border-radius: var(--radius-bar);
}

.toolbar__group {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.toolbar__group--end {
  justify-content: flex-end;
}

.pill-button {
  flex: none;
  height: 36px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--control-fill);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.35s var(--spring);
}

.pill-button:hover {
  background: var(--control-fill-hover);
}

.pill-button:active,
.icon-button:active {
  transform: scale(0.94);
}

.volume {
  display: flex;
  align-items: center;
  gap: 10px;
  width: clamp(120px, 16vw, 200px);
  color: var(--label-secondary);
}

.transport {
  display: grid;
  justify-items: center;
  gap: 2px;
  width: clamp(260px, 32vw, 420px);
}

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

.icon-button {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.35s var(--spring);
}

.icon-button:hover {
  background: var(--control-fill);
}

.icon-button .icon {
  width: 1.5rem;
  height: 1.5rem;
}

.icon-button--primary .icon {
  width: 1.75rem;
  height: 1.75rem;
}

.transport__track {
  max-width: 100%;
  margin: 0;
  overflow: hidden;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--label-secondary);
}

.scrubber {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.scrubber__time {
  flex: none;
  min-width: 3ch;
  font-size: 0.75rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--label-secondary);
}

.search {
  display: flex;
  align-items: center;
  gap: 6px;
  width: clamp(140px, 18vw, 220px);
  height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--control-fill);
  color: var(--label-secondary);
  transition: background 0.2s ease;
}

.search:focus-within {
  background: var(--control-fill-hover);
}

.search .icon {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
}

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: none;
  outline: none;
  font-size: 0.9375rem;
  color: var(--label);
}

.search input::placeholder {
  color: var(--label-secondary);
}

.search input::-webkit-search-cancel-button {
  display: none;
}

:is(.pill-button, .icon-button):focus-visible,
.search:focus-within,
.cover:focus-visible .cover__art:not(.cover__reflection),
.coverflow:focus-visible .coverflow__item[data-active] .cover__art:not(.cover__reflection) {
  outline: 2px solid var(--tint);
  outline-offset: 2px;
}

.slider {
  --fill: 50%;
  flex: 1;
  min-width: 0;
  height: 24px;
  margin: 0;
  background: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.slider::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(to right, var(--label) var(--fill), rgb(255 255 255 / 0.2) var(--fill));
}

.slider::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: rgb(255 255 255 / 0.2);
}

.slider::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--label);
}

.slider--accent::-webkit-slider-runnable-track {
  background: linear-gradient(to right, var(--tint) var(--fill), rgb(255 255 255 / 0.2) var(--fill));
  transition: background 0.4s ease;
}

.slider--accent::-moz-range-progress {
  background: var(--tint);
  transition: background 0.4s ease;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 26px;
  height: 16px;
  margin-top: -5px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 2px 6px rgb(0 0 0 / 0.35);
  transition: transform 0.35s var(--spring), background 0.2s ease;
}

.slider::-moz-range-thumb {
  width: 26px;
  height: 16px;
  border: 0;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 2px 6px rgb(0 0 0 / 0.35);
  transition: transform 0.35s var(--spring), background 0.2s ease;
}

.slider:active::-webkit-slider-thumb {
  transform: scale(1.45);
  background: rgb(255 255 255 / 0.35);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.7), 0 4px 12px rgb(0 0 0 / 0.35);
}

.slider:active::-moz-range-thumb {
  transform: scale(1.45);
  background: rgb(255 255 255 / 0.35);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.7), 0 4px 12px rgb(0 0 0 / 0.35);
}

.slider:disabled {
  cursor: default;
}

.slider:disabled::-webkit-slider-thumb {
  opacity: 0;
}

.slider:disabled::-moz-range-thumb {
  opacity: 0;
}

.slider:focus-visible {
  outline: none;
}

.slider:focus-visible::-webkit-slider-thumb {
  outline: 2px solid var(--tint);
  outline-offset: 2px;
}

.coverflow {
  position: relative;
  flex: 1;
  display: grid;
  place-content: center;
  justify-items: center;
  perspective: calc(var(--cover) * 3.2);
  perspective-origin: 50% 40%;
  outline: none;
  overflow: hidden;
  -webkit-mask: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  mask: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}

.coverflow__track {
  position: relative;
  width: var(--cover);
  height: var(--cover);
  margin: 0;
  padding: 0;
  list-style: none;
  transform-style: preserve-3d;
}

.coverflow__item {
  --side: 0;
  --distance: 0;
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transform:
    translateX(calc(var(--side) * (var(--gap) + (var(--distance) - 1) * var(--step))))
    translateZ(calc(var(--side) * var(--side) * -1 * var(--depth)))
    rotateY(calc(var(--side) * var(--angle)));
  opacity: clamp(0, calc(8 - var(--distance)), 1);
  transition:
    transform 0.6s var(--spring),
    opacity 0.4s ease;
}

.cover {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.cover__art {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #2c2c2e, #111);
  box-shadow: 0 0 0 1px rgb(255 255 255 / 0.06);
  overflow: hidden;
}

.coverflow__item[data-active] .cover__art:not(.cover__reflection) {
  box-shadow:
    0 0 0 1px rgb(255 255 255 / 0.06),
    0 25px 60px -15px color-mix(in srgb, var(--tint) 55%, transparent);
  transition: box-shadow 0.5s var(--spring);
}

.cover__art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover__art::after {
  content: '';
  position: absolute;
  inset: 0;
  background: #000;
  opacity: calc(min(var(--distance), 1) * 0.25);
  transition: opacity 0.6s var(--spring);
}

.cover__reflection {
  top: 100%;
  bottom: auto;
  height: 100%;
  transform: scaleY(-1);
  -webkit-mask: linear-gradient(to top, rgb(0 0 0 / 0.35), transparent 45%);
  mask: linear-gradient(to top, rgb(0 0 0 / 0.35), transparent 45%);
  pointer-events: none;
}

.coverflow__caption {
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 2px;
  max-width: min(90vw, calc(var(--cover) * 1.2));
  margin: calc(var(--cover) * 0.12) 0 0;
  padding: 10px 22px;
  border-radius: 22px;
  text-align: center;
}

.coverflow[data-state]:not([data-state='ready']) .coverflow__track {
  visibility: hidden;
}

.coverflow__artist {
  font-size: 1rem;
  font-weight: 700;
}

.coverflow__album {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--label-secondary);
}

.coverflow__album:empty {
  display: none;
}

.coverflow__caption--pulse {
  animation: caption-pulse 0.4s var(--spring);
}

@keyframes caption-pulse {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
}

@media (max-width: 760px) {
  :root {
    --cover: clamp(150px, 52vw, 300px);
  }

  .toolbar {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      'start end'
      'transport transport';
    row-gap: 6px;
  }

  .toolbar__group--start {
    grid-area: start;
  }

  .toolbar__group--end {
    grid-area: end;
    gap: 8px;
  }

  .transport {
    grid-area: transport;
    width: 100%;
  }

  .volume {
    display: none;
  }

  .toolbar__group--end .pill-button {
    padding: 0 12px;
  }

  .search {
    flex: 1;
    width: auto;
    min-width: 0;
    max-width: 220px;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .glass {
    background: rgb(28 28 30 / 0.96);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .player,
  .coverflow__item,
  .cover__art::after {
    transition: none;
  }

  .coverflow__caption--pulse {
    animation: none;
  }
}