:root {
  --bg: #070a10;
  --fg: #eef1f6;
  --muted: rgba(238, 241, 246, 0.64);
  --faint: rgba(238, 241, 246, 0.2);
  --hair: rgba(238, 241, 246, 0.12);
  --accent: #f3b871;
  --glass: rgba(10, 13, 20, 0.58);

  --gutter: clamp(16px, 4vw, 48px);
  --player-h: 112px;
  --player-gap: 16px;
  --player-space: calc(var(--player-h) + var(--player-gap) + env(safe-area-inset-bottom, 0px));

  --serif: "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

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

body {
  overflow: hidden;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

button:disabled {
  cursor: default;
  opacity: 0.32;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

svg .fill {
  fill: currentColor;
  stroke: none;
}

/* ---------- Лента треков ---------- */

.feed {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
}

.feed::-webkit-scrollbar {
  display: none;
}

.track {
  position: relative;
  height: 100%;
  overflow: hidden;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  background: var(--bg);
}

.track__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: var(--focus, 50% 50%);
}

.track__shade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to bottom, rgba(7, 10, 16, 0.55) 0%, rgba(7, 10, 16, 0) 20%),
    linear-gradient(to top, rgba(7, 10, 16, 0.92) 0%, rgba(7, 10, 16, 0.6) 32%, rgba(7, 10, 16, 0) 62%),
    radial-gradient(120% 70% at 0% 100%, rgba(7, 10, 16, 0.55) 0%, rgba(7, 10, 16, 0) 60%);
}

.track__content {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  bottom: calc(var(--player-space) + clamp(24px, 5vh, 56px));
  max-width: 900px;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.track.is-active .track__content {
  opacity: 1;
  transform: none;
}

.track__num {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.24em;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 12px rgba(7, 10, 16, 0.8);
}

.track__num::after {
  content: "";
  width: 48px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.track__title {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(64px, 12vw, 176px);
  line-height: 0.88;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 40px rgba(7, 10, 16, 0.4);
  overflow-wrap: anywhere;
}

.track__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3.5vh, 32px);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 20px 0 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.pill svg {
  width: 18px;
  height: 18px;
}

.pill--solid {
  background: var(--fg);
  color: var(--bg);
}

.pill--solid:hover {
  background: #fff;
}

.pill--ghost {
  padding: 0 20px;
  border: 1px solid var(--faint);
  background: rgba(7, 10, 16, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.pill--ghost:hover {
  border-color: var(--muted);
}

.pill:active {
  transform: scale(0.97);
}

.pill .i-pause,
.pill.is-on .i-play {
  display: none;
}

.pill.is-on .i-pause {
  display: block;
}

/* ---------- Шапка и навигация ---------- */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(18px, env(safe-area-inset-top)) var(--gutter) 0;
  pointer-events: none;
}

.topbar > * {
  pointer-events: auto;
}

.logo {
  color: var(--fg);
  text-decoration: none;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 34px;
  line-height: 1;
  letter-spacing: 0.01em;
}

.counter {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  font-variant-numeric: tabular-nums;
}

.counter span:first-child {
  color: var(--fg);
}

.dots {
  position: fixed;
  right: calc(var(--gutter) - 6px);
  top: 50%;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-50%);
}

.dots[hidden] {
  display: none;
}

.dot {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
}

.dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--faint);
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.dot:hover::before {
  background: var(--muted);
}

.dot.is-active::before {
  background: var(--fg);
  transform: scale(1.35);
}

/* ---------- Плеер ---------- */

.player {
  position: fixed;
  left: var(--player-gap);
  right: var(--player-gap);
  bottom: calc(var(--player-gap) + env(safe-area-inset-bottom, 0px));
  z-index: 30;
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px 12px;
  border: 1px solid var(--hair);
  border-radius: 18px;
  background: var(--glass);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.player__progress {
  display: flex;
  align-items: center;
  gap: 12px;
}

.player__time {
  flex: none;
  min-width: 36px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.player__time:last-child {
  text-align: right;
}

.player__row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin-top: 6px;
}

.player__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.player__cover {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
  background: var(--hair);
}

.player__text {
  min-width: 0;
}

.player__title {
  overflow: hidden;
  font-weight: 600;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.player__artist {
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
}

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

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

.icon-btn:not(:disabled):hover {
  background: rgba(255, 255, 255, 0.08);
}

.play-btn {
  position: relative;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--fg);
  color: var(--bg);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.play-btn:hover {
  background: #fff;
}

.play-btn:active {
  transform: scale(0.94);
}

.play-btn svg {
  width: 24px;
  height: 24px;
}

.play-btn::after {
  content: "";
  position: absolute;
  inset: -4px;
  border: 2px solid transparent;
  border-top-color: var(--accent);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.is-loading .play-btn::after {
  opacity: 1;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.play-btn .i-pause,
.is-playing .play-btn .i-play {
  display: none;
}

.is-playing .play-btn .i-pause {
  display: block;
}

.player__volume {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.i-muted,
.is-muted .i-vol {
  display: none;
}

.is-muted .i-muted {
  display: block;
}

/* ---------- Ползунки ---------- */

.range {
  --p: 0%;
  flex: 1;
  min-width: 0;
  height: 20px;
  margin: 0;
  background: transparent;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.range--volume {
  flex: none;
  width: 96px;
}

.range::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(to right, var(--fg) var(--p), var(--faint) var(--p));
}

.range::-webkit-slider-thumb {
  width: 12px;
  height: 12px;
  margin-top: -4.5px;
  border-radius: 50%;
  background: var(--fg);
  transform: scale(0);
  transition: transform 0.15s ease;
  -webkit-appearance: none;
  appearance: none;
}

.range:hover::-webkit-slider-thumb,
.range:focus-visible::-webkit-slider-thumb,
.range:active::-webkit-slider-thumb {
  transform: scale(1);
}

.range::-moz-range-track {
  height: 3px;
  border-radius: 3px;
  background: var(--faint);
}

.range::-moz-range-progress {
  height: 3px;
  border-radius: 3px;
  background: var(--fg);
}

.range::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 0;
  border-radius: 50%;
  background: var(--fg);
  transform: scale(0);
  transition: transform 0.15s ease;
}

.range:hover::-moz-range-thumb,
.range:focus-visible::-moz-range-thumb,
.range:active::-moz-range-thumb {
  transform: scale(1);
}

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

@media (hover: none) {
  .range::-webkit-slider-thumb {
    transform: scale(1);
  }

  .range::-moz-range-thumb {
    transform: scale(1);
  }

  /* На телефонах громкость регулируется кнопками устройства */
  .range--volume {
    display: none;
  }
}

/* ---------- Текст песни ---------- */

.lyrics {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  width: min(440px, 100%);
  border-left: 1px solid var(--hair);
  background: rgba(7, 10, 16, 0.72);
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0s linear 0.5s;
}

.lyrics.is-open {
  transform: none;
  visibility: visible;
  transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.lyrics__inner {
  height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: max(72px, calc(env(safe-area-inset-top) + 56px)) 32px calc(var(--player-space) + 32px);
  -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - var(--player-space) - 40px), transparent calc(100% - var(--player-space) + 4px));
  mask-image: linear-gradient(to bottom, #000 calc(100% - var(--player-space) - 40px), transparent calc(100% - var(--player-space) + 4px));
}

.lyrics__close {
  position: absolute;
  top: max(14px, env(safe-area-inset-top));
  right: 16px;
}

.lyrics__label {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.lyrics__title {
  margin: 0 0 28px;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 44px;
  line-height: 1;
}

.lyrics__text p {
  margin: 0 0 1.4em;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.45;
  white-space: pre-line;
}

.noscript {
  position: fixed;
  inset: auto 0 50% 0;
  text-align: center;
}

/* ---------- Адаптив ---------- */

@media (max-width: 720px) {
  :root {
    --player-h: 104px;
    --player-gap: 10px;
  }

  .player {
    padding: 8px 12px 10px;
    border-radius: 16px;
  }

  .player__row {
    grid-template-columns: 1fr auto;
    gap: 10px;
  }

  .player__volume {
    display: none;
  }

  .player__cover {
    width: 40px;
    height: 40px;
  }

  .player__controls {
    gap: 2px;
  }

  .dots {
    display: none;
  }

  .logo {
    font-size: 30px;
  }

  .lyrics__inner {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .track__content,
  .lyrics {
    transition: none;
  }
}