/* ========================================================================== 
   Phase 4A / NOCTURNE AUDIO ARCHIVE
   ========================================================================== */

:root {
  --audio-bg: #030911;
  --audio-bg-soft: #06111d;
  --audio-white: #edf1f2;
  --audio-muted: #8a98a5;
  --audio-muted-dark: #52616f;
  --audio-gold: #b6a276;
  --audio-line: rgba(150, 170, 185, 0.18);
  --audio-line-strong: rgba(213, 223, 228, 0.3);
}

html {
  background: var(--audio-bg);
}

body.music-archive-page {
  min-width: 320px;
  overflow-x: clip;
  color: var(--audio-white);
  background: var(--audio-bg);
  font-family: "Noto Sans JP", "Segoe UI", sans-serif;
}

.music-archive-page :focus-visible {
  outline: 1px solid var(--audio-gold);
  outline-offset: 4px;
}

.music-archive-page .skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  color: var(--audio-bg);
  background: var(--audio-white);
  transform: translateY(-180%);
}

.music-archive-page .skip-link:focus {
  transform: translateY(0);
}

.music-archive-page .nocturne-header {
  background: linear-gradient(180deg, rgba(3, 9, 17, 0.97), rgba(3, 9, 17, 0));
}

/* Archive heading --------------------------------------------------------- */
.music-archive {
  position: relative;
  isolation: isolate;
  padding: clamp(7.8rem, 12vh, 10rem) clamp(1.5rem, 5vw, 4.75rem) clamp(6rem, 10vw, 10rem);
  overflow: visible;
}

.music-archive::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 28, 44, 0.72), transparent 42%);
  content: "";
}

.music-archive__backdrop {
  position: absolute;
  z-index: -1;
  top: clamp(5.5rem, 9vw, 8.5rem);
  left: clamp(0.8rem, 2.8vw, 2.8rem);
  margin: 0;
  color: rgba(210, 220, 229, 0.055);
  font: 500 clamp(5.2rem, 13vw, 13rem) / 0.8 "Shippori Mincho", serif;
  letter-spacing: 0;
  pointer-events: none;
}

.music-archive__header {
  display: grid;
  grid-template-columns: minmax(18rem, 0.72fr) minmax(20rem, 0.68fr);
  justify-content: space-between;
  gap: 3rem;
  width: min(100%, 92rem);
  margin: 0 auto clamp(2rem, 3vw, 3rem);
  padding-bottom: clamp(1.8rem, 2.5vw, 2.6rem);
  border-bottom: 1px solid var(--audio-line-strong);
}

.music-archive__header > div:first-child p,
.music-archive__header > div:last-child strong,
.music-archive__header > div:last-child span {
  display: block;
  font-size: 0.58rem;
  letter-spacing: 0.23em;
}

.music-archive__header > div:first-child p,
.music-archive__header > div:last-child strong {
  color: var(--audio-gold);
}

.music-archive__header h1 {
  margin: 0.55rem 0 0;
  font: 500 clamp(3.5rem, 7.5vw, 7.4rem) / 0.9 "Shippori Mincho", serif;
  letter-spacing: 0.01em;
}

.music-archive__header > div:last-child {
  align-self: end;
}

.music-archive__header > div:last-child span {
  margin-top: 0.55rem;
  color: var(--audio-muted-dark);
}

.music-archive__header > div:last-child p {
  max-width: 36rem;
  margin: 1.5rem 0 0;
  color: #aeb8c0;
  font: 400 0.82rem / 2 "Noto Sans JP", sans-serif;
}

/* Desktop archive layout ------------------------------------------------- */
.music-archive__layout {
  display: grid;
  grid-template-columns: minmax(19rem, 0.72fr) minmax(32rem, 1.28fr);
  gap: clamp(3.5rem, 7vw, 8rem);
  align-items: start;
  width: min(100%, 92rem);
  margin: 0 auto;
}

.now-playing {
  position: sticky;
  top: 7.5rem;
  align-self: start;
  min-width: 0;
}

.mobile-audio-console {
  display: none;
}

.now-playing__art {
  position: relative;
  display: grid;
  width: 100%;
  aspect-ratio: 2 / 1;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--audio-line);
  background: #07131f;
}

.now-playing__art::before,
.now-playing__art::after,
.now-playing__art i,
.now-playing__art b {
  position: absolute;
  border: 1px solid rgba(182, 162, 118, 0.18);
  border-radius: 50%;
  content: "";
}

.now-playing__art::before {
  width: 72%;
  aspect-ratio: 1;
}

.now-playing__art::after {
  width: 48%;
  aspect-ratio: 1;
  border-color: rgba(151, 174, 192, 0.16);
}

.now-playing__art i {
  width: 24%;
  aspect-ratio: 1;
}

.now-playing__art b {
  top: 50%;
  right: -8%;
  width: 46%;
  aspect-ratio: 1;
  border-color: rgba(151, 174, 192, 0.09);
}

.now-playing__art > span {
  position: relative;
  z-index: 1;
  color: rgba(237, 241, 242, 0.82);
  font: 500 clamp(3.8rem, 7vw, 7rem) / 1 "Shippori Mincho", serif;
}

.now-playing__copy {
  padding: 1.8rem 0 1.6rem;
  border-bottom: 1px solid var(--audio-line);
}

.now-playing__copy > p:first-child {
  color: var(--audio-gold);
  font-size: 0.54rem;
  letter-spacing: 0.2em;
}

.now-playing__copy h2 {
  margin: 0.65rem 0 0;
  overflow-wrap: anywhere;
  font: 500 clamp(2rem, 3.6vw, 3.8rem) / 1.3 "Shippori Mincho", serif;
  letter-spacing: 0;
}

.now-playing__copy > p:last-child {
  margin: 0.75rem 0 0;
  color: var(--audio-muted);
  font: 400 0.8rem / 1.85 "Noto Sans JP", sans-serif;
}

/* Player controls -------------------------------------------------------- */
.audio-console {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1.4rem;
  align-items: center;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--audio-line);
}

.audio-console__toggle {
  display: grid;
  width: 4.5rem;
  height: 4.5rem;
  padding: 0;
  place-items: center;
  border: 1px solid var(--audio-line-strong);
  border-radius: 50%;
  color: var(--audio-white);
  background: transparent;
  cursor: pointer;
  transition: border-color 300ms ease, color 300ms ease;
}

.audio-console__toggle:hover,
.audio-console__toggle:focus-visible,
.now-playing.is-playing .audio-console__toggle {
  color: var(--audio-gold);
  border-color: var(--audio-gold);
}

.audio-console__toggle > span {
  width: 0;
  height: 0;
  margin-left: 0.2rem;
  border-top: 0.42rem solid transparent;
  border-bottom: 0.42rem solid transparent;
  border-left: 0.66rem solid currentColor;
}

.now-playing.is-playing .audio-console__toggle > span {
  width: 0.62rem;
  height: 0.75rem;
  margin-left: 0;
  border: 0;
  border-right: 0.18rem solid currentColor;
  border-left: 0.18rem solid currentColor;
}

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

.audio-console__timeline input {
  width: 100%;
  height: 1.5rem;
  margin: 0;
  accent-color: var(--audio-gold);
  cursor: pointer;
}

.audio-console__timeline > div {
  display: flex;
  justify-content: space-between;
  margin-top: 0.35rem;
  color: var(--audio-muted-dark);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

.now-playing__footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
  padding-top: 1.25rem;
}

.now-playing__footer p {
  color: var(--audio-muted-dark);
  font-size: 0.62rem;
}

.now-playing__footer a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 0.8rem;
  color: var(--audio-muted);
  font-size: 0.57rem;
  letter-spacing: 0.14em;
  transition: color 300ms ease;
}

.now-playing__footer a:hover,
.now-playing__footer a:focus-visible {
  color: var(--audio-gold);
}

/* Editorial track index ------------------------------------------------- */
.track-index {
  min-width: 0;
}

.track-index > header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.2rem;
  align-items: baseline;
  min-height: 3rem;
}

.track-index > header p,
.track-index > header span {
  color: var(--audio-gold);
  font-size: 0.54rem;
  letter-spacing: 0.2em;
}

.track-index > header h2 {
  font: 500 clamp(1.25rem, 2vw, 1.8rem) / 1.4 "Shippori Mincho", serif;
  letter-spacing: 0;
}

.track-index > header span {
  color: var(--audio-muted-dark);
}

.track-index ol {
  border-top: 1px solid var(--audio-line-strong);
}

.track-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 3.25rem;
  border-bottom: 1px solid var(--audio-line);
}

.track-row::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  background: var(--audio-gold);
  opacity: 0;
  content: "";
  transition: opacity 300ms ease;
}

.track-row.is-selected::before {
  opacity: 1;
}

.track-row > button {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr) 3.2rem;
  gap: 1rem;
  align-items: center;
  min-width: 0;
  min-height: 5.25rem;
  padding: 0.75rem 1rem 0.75rem 1.15rem;
  border: 0;
  color: var(--audio-muted);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: color 300ms ease, padding-left 300ms ease, background-color 300ms ease;
}

.track-row > button > span:first-child {
  color: var(--audio-muted-dark);
  font: 500 0.72rem / 1 "Shippori Mincho", serif;
}

.track-row > button > span:nth-child(2) {
  min-width: 0;
}

.track-row strong,
.track-row small {
  display: block;
}

.track-row strong {
  overflow-wrap: anywhere;
  font: 500 clamp(0.94rem, 1.2vw, 1.08rem) / 1.5 "Shippori Mincho", serif;
  letter-spacing: 0;
}

.track-row small {
  margin-top: 0.25rem;
  overflow: hidden;
  color: var(--audio-muted-dark);
  font-size: 0.64rem;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-row time {
  justify-self: end;
  color: var(--audio-muted-dark);
  font-size: 0.64rem;
}

.track-row > a {
  display: grid;
  min-height: 44px;
  place-items: center;
  align-self: stretch;
  border-left: 1px solid var(--audio-line);
  color: var(--audio-muted-dark);
  font-size: 0.57rem;
  letter-spacing: 0.12em;
  transition: color 300ms ease, background-color 300ms ease;
}

.track-row:hover > button,
.track-row > button:focus-visible,
.track-row.is-selected > button {
  color: var(--audio-white);
  background: rgba(108, 135, 157, 0.045);
}

.track-row.is-selected > button {
  padding-left: 1.5rem;
}

.track-row.is-selected > button > span:first-child,
.track-row.is-selected time {
  color: var(--audio-gold);
}

.track-row > a:hover,
.track-row > a:focus-visible {
  color: var(--audio-gold);
  background: rgba(108, 135, 157, 0.045);
}

.music-archive-page .nocturne-footer {
  background: #02070d;
}

/* Responsive ------------------------------------------------------------- */
@media (max-width: 980px) {
  .music-archive__header {
    grid-template-columns: minmax(15rem, 0.7fr) minmax(18rem, 0.8fr);
  }

  .music-archive__layout {
    grid-template-columns: minmax(15rem, 0.78fr) minmax(20rem, 1.22fr);
    gap: 2.2rem;
  }

  .track-row > button {
    grid-template-columns: 2.4rem minmax(0, 1fr) 2.8rem;
    gap: 0.75rem;
  }
}

@media (max-width: 700px) {
  body.music-archive-page {
    padding-bottom: 5.75rem;
  }

  .music-archive {
    padding: 6.2rem 1.5rem 6rem;
  }

  .music-archive__header,
  .music-archive__layout {
    display: block;
    width: min(100%, 40rem);
  }

  .music-archive__header {
    margin-bottom: 2.8rem;
  }

  .music-archive__header > div:last-child {
    margin-top: 1.8rem;
  }

  .music-archive__header h1 {
    font-size: clamp(3.4rem, 16vw, 5.2rem);
  }

  .now-playing {
    position: static;
  }

  .now-playing__art {
    aspect-ratio: 16 / 8;
  }

  .track-index {
    margin-top: 5.5rem;
  }

  .track-index > header {
    grid-template-columns: auto 1fr;
  }

  .track-index > header span {
    grid-column: 1 / -1;
    margin-bottom: 0.7rem;
  }

  .audio-console,
  .now-playing__footer {
    display: none;
  }

  .mobile-audio-console {
    position: fixed;
    z-index: 35;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: 3.25rem minmax(0, 1fr);
    gap: 1rem;
    align-items: center;
    min-height: 5.75rem;
    padding: 0.7rem max(1rem, env(safe-area-inset-right)) calc(0.7rem + env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
    border-top: 1px solid var(--audio-line-strong);
    background: rgba(3, 9, 17, 0.97);
    box-shadow: 0 -1rem 2.5rem rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(14px);
  }

  .mobile-audio-console__toggle {
    display: grid;
    width: 3.1rem;
    height: 3.1rem;
    padding: 0;
    place-items: center;
    border: 1px solid var(--audio-line-strong);
    border-radius: 50%;
    color: var(--audio-white);
    background: transparent;
    cursor: pointer;
  }

  .mobile-audio-console__toggle > span {
    width: 0;
    height: 0;
    margin-left: 0.14rem;
    border-top: 0.34rem solid transparent;
    border-bottom: 0.34rem solid transparent;
    border-left: 0.54rem solid currentColor;
  }

  .mobile-audio-console.is-playing .mobile-audio-console__toggle {
    color: var(--audio-gold);
    border-color: var(--audio-gold);
  }

  .mobile-audio-console.is-playing .mobile-audio-console__toggle > span {
    width: 0.55rem;
    height: 0.7rem;
    margin-left: 0;
    border: 0;
    border-right: 0.16rem solid currentColor;
    border-left: 0.16rem solid currentColor;
  }

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

  .mobile-audio-console__body {
    min-width: 0;
  }

  .mobile-audio-console__body strong {
    display: block;
    overflow: hidden;
    font: 500 0.82rem / 1.35 "Shippori Mincho", serif;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-audio-console__body input {
    width: 100%;
    height: 1.15rem;
    margin: 0.18rem 0 0;
    accent-color: var(--audio-gold);
  }

  .mobile-audio-console__body > div {
    display: flex;
    justify-content: space-between;
    color: var(--audio-muted-dark);
    font-size: 0.54rem;
  }
}

@media (max-width: 480px) {
  .music-archive {
    padding-inline: 1.1rem;
  }

  .music-archive__backdrop {
    top: 5.8rem;
    font-size: 4.8rem;
  }

  .music-archive__header > div:last-child p {
    font-size: 0.76rem;
  }

  .now-playing__art {
    aspect-ratio: 4 / 2.3;
  }

  .audio-console {
    grid-template-columns: 4.4rem minmax(0, 1fr);
    gap: 1rem;
  }

  .audio-console__toggle {
    width: 4rem;
    height: 4rem;
  }

  .now-playing__footer {
    display: block;
  }

  .now-playing__footer a {
    margin-top: 0.7rem;
  }

  .track-index {
    margin-top: 4.5rem;
  }

  .track-row {
    grid-template-columns: minmax(0, 1fr) 2.75rem;
  }

  .track-row > button {
    grid-template-columns: 2rem minmax(0, 1fr) 2.5rem;
    gap: 0.55rem;
    min-height: 4.9rem;
    padding-inline: 0.65rem;
  }

  .track-row.is-selected > button {
    padding-left: 0.95rem;
  }

  .track-row small {
    display: none;
  }

  .track-row > a {
    font-size: 0.52rem;
  }
}

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

  .music-archive-page *,
  .music-archive-page *::before,
  .music-archive-page *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}