/*
  Theme is a semantic body, not a palette switch.
  Components consume roles; each medium decides how the same message appears.
*/
:root,
:root[data-theme="morning"] {
  --body: #e9e0d1;
  --body-deep: #d9ccb9;
  --surface: #f4eee4;
  --surface-raised: #faf7f1;
  --surface-glass: rgba(250, 247, 241, 0.78);
  --ink: #29251f;
  --ink-soft: #6f675c;
  --ink-quiet: #958a7a;
  --line: rgba(54, 47, 38, 0.16);
  --message-arrival: #365244;
  --message-endurance: #80654f;
  --message-presence: #b75b49;
  --hero-veil: linear-gradient(90deg, rgba(38, 31, 24, .76) 0%, rgba(38, 31, 24, .40) 35%, rgba(38, 31, 24, 0) 68%);
  --player-body: #263b32;
  --player-ink: #f4eee4;
  --shadow: 0 24px 80px rgba(58, 42, 25, .14);
  --theme-duration: 560ms;
}

:root[data-theme="night"] {
  --body: #101817;
  --body-deep: #0b1110;
  --surface: #17211f;
  --surface-raised: #1c2926;
  --surface-glass: rgba(20, 31, 29, 0.82);
  --ink: #eee7db;
  --ink-soft: #b9b0a2;
  --ink-quiet: #847e73;
  --line: rgba(226, 216, 199, 0.14);
  --message-arrival: #b7c8b5;
  --message-endurance: #d3b89e;
  --message-presence: #df7b67;
  --hero-veil: linear-gradient(90deg, rgba(7, 14, 13, .9) 0%, rgba(7, 14, 13, .66) 42%, rgba(7, 14, 13, .15) 76%);
  --player-body: #dcd0be;
  --player-ink: #18211f;
  --shadow: 0 28px 90px rgba(0, 0, 0, .36);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--body); }
body { margin: 0; background: var(--body); color: var(--ink); font-family: "Pretendard", "Noto Sans KR", system-ui, sans-serif; transition: background var(--theme-duration), color var(--theme-duration); }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { background: var(--message-presence); color: #fff; }

.section-shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.site-header { position: fixed; z-index: 80; top: 0; left: 0; width: 100%; min-height: 84px; padding: 18px clamp(24px, 4vw, 64px); display: flex; align-items: center; justify-content: space-between; color: #f8f3e9; background: linear-gradient(180deg, rgba(12, 17, 15, .48), transparent); }
.wordmark { display: flex; flex-direction: column; line-height: 1; gap: 5px; }
.wordmark span { font: 600 12px/1 system-ui; letter-spacing: .23em; }
.wordmark i { font: normal 15px/1.2 Georgia, "Times New Roman", serif; }
.site-header nav { display: flex; gap: clamp(20px, 3vw, 44px); font-size: 12px; letter-spacing: .12em; }
.site-header nav a { opacity: .76; transition: opacity .2s; }
.site-header nav a:hover { opacity: 1; }
.theme-switch { border: 1px solid rgba(255,255,255,.35); border-radius: 999px; background: rgba(12,18,16,.18); color: #fff; padding: 9px 14px; display: flex; gap: 9px; align-items: center; cursor: pointer; font-size: 11px; letter-spacing: .08em; backdrop-filter: blur(12px); }
.theme-switch span { font-size: 16px; }
.menu-button, .menu-layer { display: none; }

.hero { position: relative; height: max(720px, 100svh); min-height: 680px; overflow: hidden; color: #f7f1e6; }
.hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-shade { position: absolute; inset: 0; background: var(--hero-veil); transition: background var(--theme-duration); }
:root[data-theme="night"] .hero > img { filter: brightness(.55) saturate(.7) contrast(1.06); transition: filter var(--theme-duration); }
.hero-copy { position: relative; z-index: 2; padding: clamp(170px, 22vh, 250px) clamp(24px, 8vw, 124px) 80px; width: min(900px, 72%); }
.kicker, .section-number { margin: 0 0 22px; font-size: 11px; letter-spacing: .22em; font-weight: 650; text-transform: uppercase; }
.hero h1 { margin: 0; font-family: Georgia, "Noto Serif KR", serif; font-weight: 400; font-size: clamp(72px, 8vw, 128px); line-height: .98; letter-spacing: -.07em; white-space: nowrap; }
.english-title { margin: 24px 0 42px; font: 500 12px/1 system-ui; letter-spacing: .32em; opacity: .7; }
.lede { font-family: Georgia, "Noto Serif KR", serif; font-size: clamp(19px, 1.65vw, 26px); line-height: 1.85; letter-spacing: -.025em; }
.hero-actions { margin-top: 44px; display: flex; align-items: center; gap: 32px; }
.primary-play { border: 0; border-radius: 999px; background: #f4eee4; color: #27352f; padding: 13px 24px 13px 14px; display: flex; align-items: center; gap: 13px; cursor: pointer; box-shadow: 0 12px 30px rgba(0,0,0,.16); }
.primary-play > span:last-child { font-size: 13px; font-weight: 650; }
.text-link { font-size: 12px; letter-spacing: .08em; border-bottom: 1px solid rgba(255,255,255,.45); padding-bottom: 5px; }
.play-icon { width: 36px; height: 36px; border-radius: 50%; display: inline-grid; place-items: center; background: var(--message-presence); position: relative; flex: none; }
.play-icon::after { content: ""; border-left: 8px solid #fff; border-block: 5px solid transparent; margin-left: 3px; }
.pause-icon { width: 36px; height: 36px; border-radius: 50%; background: var(--message-presence); display: inline-flex; justify-content: center; align-items: center; gap: 4px; flex: none; }
.pause-icon i { width: 3px; height: 11px; border-radius: 2px; background: #fff; }
.scroll-note { position: absolute; z-index: 2; right: 40px; bottom: 80px; margin: 0; writing-mode: vertical-rl; text-transform: uppercase; font-size: 9px; letter-spacing: .25em; opacity: .65; }
.scroll-note span { display: inline-block; height: 48px; border-left: 1px solid currentColor; margin-top: 12px; }

.story { padding-block: clamp(110px, 15vw, 210px); display: grid; grid-template-columns: .8fr 1.3fr; gap: clamp(52px, 9vw, 140px); align-items: center; }
.story-copy h2, .section-heading h2, .album-note h2 { margin: 0 0 36px; font: 400 clamp(42px, 5vw, 74px)/1.22 Georgia, "Noto Serif KR", serif; letter-spacing: -.055em; }
.story-copy > p:not(.section-number), .section-heading > p:not(.section-number), .note-body > p { color: var(--ink-soft); font-size: 16px; line-height: 2; max-width: 520px; word-break: keep-all; }
.story-image { margin: 0; position: relative; }
.story-image img { width: 100%; aspect-ratio: 4/3; object-fit: cover; box-shadow: var(--shadow); }
.story-image figcaption { margin-top: 14px; color: var(--ink-quiet); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; }

.voices { background: var(--surface); padding-block: clamp(100px, 13vw, 180px); transition: background var(--theme-duration); }
.section-heading { display: grid; grid-template-columns: .45fr 1fr .7fr; column-gap: 40px; align-items: end; }
.section-heading .section-number { align-self: start; }
.section-heading h2 { margin: 0; }
.track-grid { margin-top: 72px; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.track-card { min-height: 190px; border: 0; border-bottom: 1px solid var(--line); background: transparent; text-align: left; padding: 28px 26px; display: grid; grid-template-columns: 48px 1fr 52px; gap: 18px; align-items: center; cursor: pointer; transition: background .3s, color .3s, transform .3s; }
.track-card:nth-child(odd) { border-right: 1px solid var(--line); }
.track-card:hover, .track-card.is-active { background: var(--surface-raised); }
.track-card:hover { transform: translateY(-3px); }
.track-index { color: var(--ink-quiet); font: 500 10px/1 system-ui; letter-spacing: .14em; }
.track-meta { display: flex; flex-direction: column; }
.track-meta i { color: var(--message-arrival); font: 650 10px/1 system-ui; letter-spacing: .19em; text-transform: uppercase; }
.track-meta strong { margin-top: 10px; font: 400 25px/1.3 Georgia, "Noto Serif KR", serif; }
.track-meta small { margin-top: 12px; color: var(--ink-soft); font-size: 12px; }
.track-action .play-icon, .track-action .pause-icon { width: 44px; height: 44px; }

.lyric-field { position: relative; min-height: min(880px, 78vw); color: #f5ede0; overflow: hidden; }
.lyric-field > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(.68); }
:root[data-theme="night"] .lyric-field > img { filter: brightness(.38) saturate(.7); }
.lyric-copy { position: relative; z-index: 2; width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding-top: clamp(110px, 13vw, 190px); display: grid; grid-template-columns: 1fr 1fr; }
.lyric-copy > p, .lyric-copy > strong { margin: 0; font: 400 clamp(33px, 4.4vw, 68px)/1.35 Georgia, "Noto Serif KR", serif; letter-spacing: -.05em; }
.lyric-copy > strong { font-weight: 400; }
.lyric-lines { grid-column: 2; margin-top: 64px; display: flex; flex-direction: column; gap: 14px; font: 400 14px/1.4 Georgia, "Noto Serif KR", serif; letter-spacing: .08em; opacity: .8; }

.album-note { padding-block: clamp(110px, 15vw, 220px); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px, 10vw, 160px); }
.note-body blockquote { margin: 72px 0 0; padding: 28px 0 0 34px; border-top: 1px solid var(--line); border-left: 3px solid var(--message-presence); font: 400 clamp(26px, 2.5vw, 38px)/1.5 Georgia, "Noto Serif KR", serif; color: var(--message-endurance); }

footer { background: var(--body-deep); padding: 90px clamp(24px, 6vw, 90px) 140px; display: flex; align-items: end; justify-content: space-between; border-top: 1px solid var(--line); }
.footer-title { display: flex; flex-direction: column; }
.footer-title span { font: 400 clamp(46px, 6vw, 88px)/1 Georgia, "Noto Serif KR", serif; letter-spacing: -.06em; }
.footer-title strong { margin-top: 16px; font: 600 11px/1 system-ui; letter-spacing: .36em; }
footer p { color: var(--ink-soft); font: 11px/1.6 system-ui; letter-spacing: .08em; }
footer button { border: 0; background: none; cursor: pointer; color: var(--ink-soft); font-size: 12px; }

.now-playing { position: fixed; z-index: 60; left: 50%; bottom: 20px; transform: translate(-50%, calc(100% + 42px)); width: min(760px, calc(100% - 32px)); height: 76px; padding: 10px 16px 10px 10px; border-radius: 22px; background: var(--player-body); color: var(--player-ink); box-shadow: 0 18px 60px rgba(0,0,0,.28); display: grid; grid-template-columns: 48px 150px 1fr 100px; gap: 16px; align-items: center; transition: transform .45s cubic-bezier(.22,1,.36,1), background var(--theme-duration), color var(--theme-duration); }
.now-playing.is-open { transform: translate(-50%, 0); }
.now-playing.status-loading .sound-wave i { animation-duration: .42s; opacity: .72; }
.now-playing.status-paused .sound-wave i, .now-playing.status-error .sound-wave i { animation-play-state: paused; opacity: .28; }
.dock-play { border: 0; background: transparent; padding: 0; cursor: pointer; }
.dock-play .play-icon, .dock-play .pause-icon { width: 42px; height: 42px; }
.dock-title { display: flex; flex-direction: column; gap: 3px; overflow: hidden; }
.dock-title small { opacity: .62; font: 9px/1 system-ui; letter-spacing: .16em; text-transform: uppercase; }
.dock-title strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font: 400 15px/1.3 Georgia, "Noto Serif KR", serif; }
.dock-progress { display: flex; align-items: center; gap: 12px; }
.dock-progress input { width: 100%; appearance: none; height: 2px; background: linear-gradient(90deg, var(--message-presence) var(--progress), color-mix(in srgb, var(--player-ink) 18%, transparent) var(--progress)); cursor: pointer; }
.dock-progress input::-webkit-slider-thumb { appearance: none; width: 11px; height: 11px; border-radius: 50%; background: var(--player-ink); }
.dock-progress span { min-width: 74px; font: 9px/1 system-ui; opacity: .65; }
.sound-wave { height: 26px; display: flex; align-items: center; gap: 2px; }
.sound-wave i { width: 2px; height: var(--bar); min-height: 3px; background: currentColor; opacity: .42; animation: pulse-wave .8s ease-in-out infinite alternate; animation-delay: calc(var(--bar) * -0.01); }
.source-link { justify-self: end; font: 650 10px/1 system-ui; letter-spacing: .06em; padding: 10px 12px; color: inherit; background: transparent; border: 1px solid color-mix(in srgb, currentColor 28%, transparent); border-radius: 999px; cursor: pointer; }
@keyframes pulse-wave { to { height: calc(var(--bar) * .42); opacity: .72; } }

@media (max-width: 820px) {
  .section-shell { width: min(100% - 36px, 620px); }
  .site-header { min-height: 70px; padding: 14px 18px; }
  .site-header nav { display: none; }
  .theme-switch { display: none; }
  .menu-button { width: 44px; height: 44px; padding: 0; border: 1px solid rgba(255,255,255,.34); border-radius: 50%; background: rgba(12,18,16,.18); display: grid; place-content: center; gap: 6px; cursor: pointer; backdrop-filter: blur(12px); position: relative; z-index: 82; }
  .menu-button span { display: block; width: 17px; height: 1px; background: #fff; transform-origin: center; transition: transform .68s cubic-bezier(.22,1,.36,1), margin .68s, opacity .36s; }
  .menu-button.is-open span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-button.is-open span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .menu-layer { display: block; position: fixed; z-index: 70; inset: 0; pointer-events: none; visibility: hidden; transition: visibility 0s linear .68s; }
  .menu-layer.is-open { pointer-events: auto; visibility: visible; transition-delay: 0s; }
  .menu-scrim { position: absolute; inset: 0; width: 100%; border: 0; background: rgba(9,14,12,.46); opacity: 0; backdrop-filter: blur(0); transition: opacity .64s ease, backdrop-filter .72s ease; }
  .menu-layer.is-open .menu-scrim { opacity: 1; backdrop-filter: blur(6px); transition-duration: .82s, .9s; }
  .mobile-menu { position: relative; width: 100%; max-height: calc(100svh - 22px); padding: 104px 24px 28px; border-radius: 0 0 28px 28px; color: var(--ink); background: var(--surface-glass); box-shadow: var(--shadow); backdrop-filter: blur(24px) saturate(1.15); transform: translateY(calc(-100% - 30px)); transition: transform .66s cubic-bezier(.4,0,.6,1), background var(--theme-duration), color var(--theme-duration); overflow-y: auto; }
  .menu-layer.is-open .mobile-menu { transform: translateY(0); transition-duration: .94s, var(--theme-duration), var(--theme-duration); transition-timing-function: cubic-bezier(.16,.78,.18,1), ease, ease; }
  .menu-eyebrow { margin: 0 0 18px; color: var(--message-arrival); font: 650 9px/1 system-ui; letter-spacing: .24em; text-transform: uppercase; opacity: 0; transform: translateY(-8px); filter: blur(3px); transition: opacity .35s ease, transform .52s cubic-bezier(.22,1,.36,1), filter .48s ease; }
  .menu-layer.is-open .menu-eyebrow { opacity: 1; transform: translateY(0); filter: blur(0); transition-delay: .34s; }
  .mobile-menu nav { border-top: 1px solid var(--line); }
  .mobile-menu nav a { min-height: 88px; display: grid; grid-template-columns: 32px 1fr 12px; align-items: center; gap: 10px; border-bottom: 1px solid var(--line); outline-offset: -2px; opacity: 0; transform: translateY(-13px); filter: blur(4px); transition: opacity .4s ease, transform .62s cubic-bezier(.22,1,.36,1), filter .52s ease; }
  .menu-layer.is-open .mobile-menu nav a { opacity: 1; transform: translateY(0); filter: blur(0); }
  .menu-layer.is-open .mobile-menu nav a:nth-child(1) { transition-delay: .42s; }
  .menu-layer.is-open .mobile-menu nav a:nth-child(2) { transition-delay: .50s; }
  .menu-layer.is-open .mobile-menu nav a:nth-child(3) { transition-delay: .58s; }
  .menu-number { color: var(--ink-quiet); font: 600 9px/1 system-ui; letter-spacing: .12em; }
  .menu-label { display: flex; flex-direction: column; gap: 5px; }
  .menu-label strong { font: 400 25px/1.15 Georgia, "Noto Serif KR", serif; }
  .menu-label small { color: var(--ink-soft); font-size: 11px; }
  .mobile-menu nav a > i { width: 6px; height: 6px; border-radius: 50%; background: var(--message-presence); opacity: 0; transform: scale(.25); transition: opacity .38s ease, transform .52s cubic-bezier(.2,1.5,.4,1); }
  .menu-layer.is-open .mobile-menu nav a.is-current > i { opacity: 1; transform: scale(1); transition-delay: .76s; }
  .menu-footer { padding-top: 20px; display: flex; align-items: end; justify-content: space-between; gap: 18px; opacity: 0; transform: translateY(-7px); transition: opacity .42s ease, transform .58s cubic-bezier(.22,1,.36,1); }
  .menu-layer.is-open .menu-footer { opacity: 1; transform: translateY(0); transition-delay: .68s; }
  .menu-footer > button { border: 1px solid var(--line); border-radius: 999px; background: var(--surface-raised); padding: 10px 13px; display: flex; align-items: center; gap: 8px; font-size: 10px; cursor: pointer; }
  .menu-footer > button span { font-size: 15px; }
  .menu-footer p { margin: 0; min-width: 0; display: flex; flex-direction: column; text-align: right; gap: 4px; }
  .menu-footer p span { color: var(--ink-quiet); font: 600 8px/1 system-ui; letter-spacing: .16em; text-transform: uppercase; }
  .menu-footer p strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font: 400 12px/1.4 Georgia, "Noto Serif KR", serif; }
  .hero { min-height: 720px; }
  .hero > img { object-position: 63% center; }
  .hero-copy { padding: 160px 24px 70px; width: 100%; }
  .hero h1 { font-size: clamp(54px, 16vw, 82px); }
  .english-title { letter-spacing: .18em; font-size: 9px; }
  .lede { font-size: 18px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 22px; }
  .scroll-note { display: none; }
  .story, .album-note { grid-template-columns: 1fr; }
  .story { gap: 48px; }
  .story-copy h2, .section-heading h2, .album-note h2 { font-size: 43px; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .track-grid { grid-template-columns: 1fr; margin-top: 50px; }
  .track-card:nth-child(odd) { border-right: 0; }
  .track-card { min-height: 150px; padding-inline: 12px; grid-template-columns: 34px 1fr 46px; }
  .lyric-field { min-height: 720px; }
  .lyric-field > img { object-position: 36% center; }
  .lyric-copy { width: calc(100% - 36px); grid-template-columns: 1fr; gap: 24px; }
  .lyric-copy > p, .lyric-copy > strong { font-size: 38px; }
  .lyric-lines { grid-column: 1; margin-top: 28px; }
  footer { padding-bottom: 130px; flex-direction: column; align-items: flex-start; gap: 34px; }
  .now-playing { height: 68px; border-radius: 18px; grid-template-columns: 44px 1fr 80px; gap: 10px; }
  .dock-progress { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}