@property --dynamic-r {
  syntax: "<number>";
  inherits: true;
  initial-value: 215;
}

@property --dynamic-g {
  syntax: "<number>";
  inherits: true;
  initial-value: 181;
}

@property --dynamic-b {
  syntax: "<number>";
  inherits: true;
  initial-value: 109;
}

:root {
  color-scheme: dark;
  --bg: #0f0f0f;
  --bg-elevated: #171717;
  --glass: rgba(23, 23, 23, 0.62);
  --glass-strong: rgba(28, 28, 28, 0.78);
  --text: #f4efe7;
  --muted: #aaa197;
  --subtle: #746f68;
  --line: rgba(255, 255, 255, 0.11);
  --dynamic-r: 215;
  --dynamic-g: 181;
  --dynamic-b: 109;
  --accent: rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b));
  --accent-soft: rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.16);
  --accent-cool: #79b7c5;
  --danger: #d86969;
  --sidebar-width: 200px;
  --player-height: 112px;
  --radius: 8px;
  --font-title: "Playfair Display", "Noto Sans SC", Georgia, serif;
  --font-body: "DM Mono", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  transition:
    --dynamic-r 1s ease,
    --dynamic-g 1s ease,
    --dynamic-b 1s ease;
}

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

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 18% 84%, rgba(215, 181, 109, 0.14), transparent 28%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0;
  line-height: 1.55;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 100% 36px;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px);
  background-size: 5px 5px, 7px 7px;
  mix-blend-mode: overlay;
  opacity: 0.12;
}

body.sheet-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  color: inherit;
  font: inherit;
}

h1,
h2,
p {
  margin: 0;
}

.sidebar {
  position: fixed;
  inset: 0 auto var(--player-height) 0;
  z-index: 20;
  width: var(--sidebar-width);
  padding: 28px 18px;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  scrollbar-width: thin;
  scrollbar-color: rgb(255 255 255 / 0.22) transparent;
}

.site-logo {
  display: grid;
  gap: 10px;
  margin-bottom: 42px;
}

.logo-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-title);
  font-size: 24px;
  font-weight: 700;
}

.logo-text {
  color: var(--text);
  font-size: 13px;
}

.side-nav {
  display: grid;
  gap: 8px;
}

.side-nav a {
  display: block;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted);
}

.side-nav a:hover,
.side-nav a:focus-visible,
.side-nav a.is-active {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  outline: 0;
}

.side-filter {
  margin-top: 34px;
}

.side-filter h2 {
  margin-bottom: 12px;
  color: var(--subtle);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: uppercase;
}

.sidebar-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sidebar-tag-button {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
  cursor: pointer;
}

.sidebar-tag-button:hover,
.sidebar-tag-button:focus-visible,
.sidebar-tag-button.is-active,
.track-tag:hover,
.track-tag:focus-visible,
.track-tag.is-active {
  border-color: rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.58);
  background: var(--accent-soft);
  color: var(--accent);
  outline: 0;
}

.music-main {
  min-height: 100vh;
  padding: 28px clamp(22px, 5vw, 72px) calc(var(--player-height) + 34px);
  margin-left: var(--sidebar-width);
  background:
    radial-gradient(circle at 72% 12%, rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.14), transparent 34%),
    transparent;
}

.album-header {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  min-height: 160px;
  max-width: 1120px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--glass);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.album-cover {
  position: relative;
  width: 120px;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 22%, rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.32), transparent 38%),
    linear-gradient(135deg, #333, #565656);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.34);
  transition:
    border-color 1s ease,
    box-shadow 1s ease,
    background 1s ease;
}

.album-cover.has-image {
  background: var(--cover-image) center / cover no-repeat;
}

.album-cover.is-missing {
  background: linear-gradient(135deg, #333, #565656);
}

.album-cover.is-placeholder {
  background:
    radial-gradient(circle at 30% 22%, rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.32), transparent 38%),
    linear-gradient(135deg, #333, #565656);
}

.album-ring,
.album-hole {
  display: none;
}

.kicker,
.search-field span,
.track-index,
.track-tag,
.track-time,
.now-artist,
.volume {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.album-header-copy {
  min-width: 0;
}

.album-header-copy h1 {
  margin: 4px 0 8px;
  overflow: hidden;
  font-family: var(--font-title);
  font-size: clamp(40px, 6vw, 70px);
  font-weight: 700;
  line-height: 0.98;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.album-header-copy p:last-child {
  max-width: 38em;
  color: var(--muted);
}

.player-support {
  display: none;
}

.track-section {
  max-width: 1120px;
  margin-top: 0;
}

.tag-section,
.about-section {
  max-width: 1120px;
  margin-top: 18px;
}

.tag-section h2,
.about-section h2 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.search-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 14px;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  color: var(--muted);
}

.search-field:focus-within {
  border-color: rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.58);
  box-shadow: 0 0 0 3px rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.12);
}

.search-field i {
  font-size: 18px;
}

.search-field input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
}

.search-field input::placeholder {
  color: var(--subtle);
}

h2 {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1.1;
}

.track-list {
  display: grid;
  gap: 6px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.track-empty {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
}

.track-item {
  display: grid;
  grid-template-columns: 36px 40px minmax(0, 1fr) 56px minmax(84px, auto);
  gap: 14px;
  align-items: center;
  min-height: 58px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
  cursor: pointer;
  transition:
    border-color 1s ease,
    background-color 1s ease,
    background 1s ease;
}

.track-item.is-current {
  border-color: rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.52);
  background: var(--accent-soft);
}

.track-item:focus-visible {
  border-color: var(--accent);
  outline: 2px solid rgba(215, 181, 109, 0.32);
  outline-offset: 2px;
}

.track-cover {
  position: relative;
  display: block;
  width: 40px;
  height: 40px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(135deg, #343434, #5d5d5d);
}

.track-cover.has-image {
  background: var(--cover-image) center / cover no-repeat;
}

.track-cover.is-missing,
.track-cover.is-placeholder {
  background:
    radial-gradient(circle at 30% 22%, rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.28), transparent 40%),
    linear-gradient(135deg, #343434, #5d5d5d);
}

.album-cover.is-placeholder::after,
.track-cover.is-placeholder::after,
.thumb-cover.is-placeholder::after {
  content: attr(data-initial);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgb(255 255 255 / 0.82);
  font-family: var(--font-title);
  font-weight: 700;
  text-transform: uppercase;
}

.album-cover.is-placeholder::after {
  font-size: 44px;
}

.album-cover.is-placeholder .album-ring,
.album-cover.is-placeholder .album-hole {
  display: none;
}

.lyrics-panel {
  width: min(72vw, 420px);
  max-height: 200px;
  overflow: hidden;
  mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 82%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 82%, transparent);
  scroll-behavior: smooth;
}

.lyrics-panel[hidden] {
  display: none;
}

.lyrics-panel::-webkit-scrollbar {
  display: none;
}

.lyrics-list {
  display: grid;
  gap: 10px;
  padding: 76px 0;
  margin: 0;
  text-align: center;
}

.lyric-line {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  opacity: 0.48;
  transition:
    color 240ms ease,
    font-size 240ms ease,
    opacity 240ms ease;
}

.lyric-line.is-active {
  color: var(--accent);
  font-size: 16px;
  opacity: 1;
}

.track-cover.is-placeholder::after {
  font-size: 18px;
}

.track-meta {
  display: grid;
  min-width: 0;
}

.track-title,
.now-title {
  overflow: hidden;
  color: var(--text);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-artist {
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.track-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  text-align: center;
  cursor: pointer;
}

.track-time {
  text-align: right;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list button {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  cursor: pointer;
}

.about-section p {
  max-width: 56em;
  color: var(--muted);
}

.player-bar {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(210px, 320px) minmax(230px, 1fr) minmax(150px, 220px);
  gap: 10px clamp(18px, 4vw, 54px);
  align-items: center;
  min-height: var(--player-height);
  padding: 12px clamp(18px, 4vw, 48px) 14px;
  border-top: 1px solid var(--line);
  background: var(--glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition:
    background-color 1s ease,
    border-color 1s ease,
    transform 260ms ease;
}

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

.thumb-cover {
  position: relative;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: linear-gradient(135deg, #343434, #5d5d5d);
  transition:
    background 1s ease,
    border-color 1s ease;
}

.thumb-cover.has-image {
  background: var(--cover-image) center / cover no-repeat;
}

.thumb-cover.is-missing,
.thumb-cover.is-placeholder {
  background: linear-gradient(135deg, #343434, #5d5d5d);
}

.thumb-cover.is-placeholder::after {
  font-size: 18px;
}

.now-meta {
  display: grid;
  min-width: 0;
}

.transport {
  display: flex;
  justify-content: center;
  min-width: 0;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.controls button {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition:
    border-color 240ms ease,
    background-color 240ms ease,
    background 1s ease,
    color 240ms ease,
    transform 240ms ease;
}

.controls button:hover,
.controls button:focus-visible {
  border-color: var(--glass-border-hover, rgba(255, 255, 255, 0.18));
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  outline: 0;
}

.controls button i {
  font-size: 22px;
  line-height: 1;
}

.controls .play-button {
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #101010;
}

.controls .play-button:hover,
.controls .play-button:focus-visible {
  border-color: transparent;
  background: var(--accent);
  color: #101010;
}

.progress-wrap {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 48px minmax(80px, 1fr) 48px;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.progress,
.volume-track {
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.progress {
  cursor: pointer;
}

.progress:focus-visible {
  outline: 2px solid rgba(215, 181, 109, 0.42);
  outline-offset: 4px;
}

.progress span,
.volume-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-cool));
  transition: background 1s ease;
}

.volume {
  display: grid;
  grid-template-columns: auto minmax(80px, 1fr);
  gap: 10px;
  align-items: center;
  justify-self: stretch;
}

.volume i {
  color: var(--muted);
  font-size: 20px;
}

.volume-slider {
  width: 100%;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

.volume-slider:focus-visible {
  outline: 2px solid rgba(215, 181, 109, 0.42);
  outline-offset: 3px;
}

.mobile-tabs {
  display: none;
}

.mobile-player-sheet {
  display: none;
}

@media (max-width: 900px) {
  .album-header {
    grid-template-columns: 96px minmax(0, 1fr);
    min-height: 132px;
    padding: 16px;
  }

  #cover-disc {
    width: 96px;
  }

  .album-header-copy h1 {
    font-size: clamp(34px, 7vw, 52px);
  }
}

@media (max-width: 767px) {
  :root {
    --player-height: 86px;
  }

  .sidebar {
    display: none;
  }

  .music-main {
    padding: 16px 14px calc(var(--player-height) + 76px);
    margin-left: 0;
  }

  .album-header {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 14px;
    min-height: 104px;
    padding: 12px;
  }

  #cover-disc {
    width: 72px;
    border-radius: 10px;
  }

  #cover-disc.is-placeholder::after {
    font-size: 30px;
  }

  .tag-section,
  .about-section {
    margin-top: 16px;
  }

  .track-section {
    margin-top: 0;
  }

  .album-header-copy h1 {
    font-size: clamp(28px, 8vw, 34px);
  }

  .album-header-copy p:last-child {
    display: none;
  }

  .track-item {
    grid-template-columns: 28px 40px minmax(0, 1fr) 46px;
    gap: 10px;
    padding: 11px 12px;
  }

  .track-tags {
    grid-column: 3 / -1;
    justify-content: flex-start;
  }

  .player-bar {
    bottom: 54px;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    min-height: 86px;
    padding: 10px 14px;
    cursor: pointer;
  }

  .volume {
    display: none;
  }

  .now-playing {
    justify-content: flex-start;
  }

  .player-bar .now-artist {
    display: none;
  }

  .thumb-cover {
    width: 44px;
    height: 44px;
  }

  .transport {
    display: block;
    justify-self: end;
  }

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

  .controls #prevButton,
  .controls #nextButton,
  .controls #modeButton {
    display: none;
  }

  .progress-wrap {
    grid-column: 1 / -1;
    grid-template-columns: 40px minmax(80px, 1fr) 40px;
    gap: 8px;
  }

  .controls button {
    width: 34px;
    height: 34px;
  }

  .controls .play-button {
    width: 38px;
    height: 38px;
  }

  .mobile-tabs {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 31;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    height: 54px;
    border-top: 1px solid var(--line);
    background: var(--glass-strong);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
  }

  .mobile-tabs a {
    display: grid;
    place-items: center;
    color: var(--muted);
    font-size: 12px;
    transition:
      color 240ms ease,
      background-color 240ms ease;
  }

  .mobile-tabs a.is-active {
    color: var(--accent);
  }

  .mobile-player-sheet {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: grid;
    grid-template-rows: auto auto auto minmax(96px, 160px) auto auto;
    align-content: start;
    gap: 18px;
    padding: 12px 22px calc(28px + env(safe-area-inset-bottom));
    background:
      radial-gradient(circle at 50% 8%, rgb(var(--dynamic-r) var(--dynamic-g) var(--dynamic-b) / 0.16), transparent 34%),
      var(--bg);
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
    transition:
      transform 320ms ease,
      opacity 320ms ease,
      background 1s ease;
  }

  .mobile-player-sheet.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-sheet-grip {
    justify-self: center;
    width: 44px;
    height: 4px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.2);
  }

  .sheet-close-button {
    position: absolute;
    top: 18px;
    right: 18px;
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: var(--muted);
  }

  .sheet-artwork {
    display: grid;
    place-items: center;
    padding-top: 18px;
  }

  .sheet-cover {
    width: min(68vw, 280px);
  }

  .sheet-meta {
    display: grid;
    gap: 4px;
    text-align: center;
  }

  .sheet-title {
    overflow: hidden;
    color: var(--text);
    font-size: 18px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .sheet-artist {
    overflow: hidden;
    color: var(--muted);
    font-size: 12px;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .sheet-lyrics {
    justify-self: center;
    width: min(86vw, 420px);
    max-height: 160px;
  }

  .sheet-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
  }

  .sheet-controls button {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    transition:
      border-color 240ms ease,
      background-color 240ms ease,
      background 1s ease,
      color 240ms ease,
      transform 240ms ease;
  }

  .sheet-controls .play-button {
    width: 52px;
    height: 52px;
    background: var(--accent);
    color: #101010;
  }

  .sheet-progress-wrap {
    display: grid;
    grid-template-columns: 42px minmax(80px, 1fr) 42px;
    gap: 10px;
    align-items: center;
    color: var(--muted);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .album-cover {
    animation: none;
  }

  .album-cover,
  .controls button,
  .mobile-player-sheet,
  .player-bar,
  .progress span,
  .sheet-controls button,
  .track-item {
    transition: none;
  }
}