/* ============================================
   Alter-I Official Site — Design System v3
   碧と紅が交差する、エモーショナルな物語性
   --------------------------------------------
   アクセシビリティ上の約束（v2 から継承）
   - 文字に opacity / text-shadow / グラデーション文字を使わない
     （TalkBack が背景色や書式の変化を読み上げる問題の回避）
   - 文字色は不透明の単色で、背景との対比 4.5:1 以上
   - ヒーローの文字は不透明な単色の面の上に置く
   ============================================ */

:root {
  /* Brand — KIRI = AZURE, REN = CRIMSON（装飾用） */
  --azure:          #007FFF;
  --crimson:        #DC143C;
  /* 文字用（暗い背景で 4.5:1 以上になる明度） */
  --azure-text:     #5AAEFF;
  --crimson-text:   #FF6B81;
  --gold-text:      #F2D29B;

  --azure-glow:     rgba(0, 127, 255, 0.35);
  --crimson-glow:   rgba(220, 20, 60, 0.35);

  /* Backgrounds */
  --bg-primary:     #06060C;
  --bg-secondary:   #0B0B16;
  --bg-card:        #11111F;
  --bg-card-hover:  #1A1A2E;
  --bg-solid-panel: #06060C;

  /* Text（すべて不透明） */
  --text-primary:   #F2F2F8;
  --text-secondary: #B4B4CC;
  --text-muted:     #9494B0;

  --border-subtle:  #22223A;
  --border-strong:  #3A3A58;
  --focus-ring:     #FFFFFF;

  --radius-sm:      8px;
  --radius-md:      14px;
  --radius-lg:      22px;
  --ease:           cubic-bezier(0.22, 1, 0.36, 1);
  --transition:     0.3s var(--ease);

  --font-display:   'Outfit', 'Noto Sans JP', sans-serif;
  --font-body:      'Noto Sans JP', sans-serif;

  --header-h:       64px;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.8;
  overflow-x: hidden;
  word-break: auto-phrase; /* 日本語を文節で改行（対応ブラウザのみ） */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.is-locked {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 12px 24px;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.skip-link:focus {
  top: 16px;
}

/* ---------- Headings ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.25;
}

/* ---------- Links ---------- */
a {
  color: var(--azure-text);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--crimson-text);
}

/* ---------- Focus（白い太枠＋外側の濃い縁で、どの背景でも見える） ---------- */
:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--bg-primary);
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
}

section {
  padding: clamp(4.5rem, 10vw, 8.5rem) 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.75em;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.section-label::before {
  content: "";
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--crimson), var(--azure));
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  letter-spacing: 0.01em;
  margin-bottom: 0.6em;
}

.section-desc {
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  min-height: 48px;
  padding: 0.75em 1.8em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.04em;
  border-radius: 100px;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.btn--primary {
  color: #fff;
  background: linear-gradient(120deg, #B0102F 0%, #8A1B6E 50%, #0060C8 100%);
  border: 1px solid transparent;
}

.btn--primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -8px var(--crimson-glow), 0 10px 30px -8px var(--azure-glow);
}

.btn--ghost {
  color: var(--text-primary);
  background: var(--bg-solid-panel);
  border: 1px solid var(--border-strong);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

.btn--small {
  min-height: 44px;
  padding: 0.55em 1.4em;
  font-size: 0.9rem;
}

/* ============================================
   Header / Navigation
   ============================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(6, 6, 12, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
}

.site-header__logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  padding: 6px 0;
}

.site-header__logo:hover {
  color: var(--text-primary);
}

.site-nav__list {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 0.9rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-radius: 100px;
}

.site-nav__link:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--text-primary);
  cursor: pointer;
  position: relative;
}

.nav-toggle__bar,
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  background: currentColor;
  transform: translateX(-50%);
  transition: transform var(--transition), top var(--transition);
}

.nav-toggle__bar { top: 50%; }
.nav-toggle__bar::before { content: ""; top: -6px; }
.nav-toggle__bar::after  { content: ""; top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { top: 0; transform: translateX(-50%) rotate(45deg); background: var(--text-primary); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after  { top: 0; transform: translateX(-50%) rotate(-45deg); background: var(--text-primary); }

.nav-close-item {
  display: none;
}

.nav-close-btn {
  min-height: 48px;
  min-width: 160px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  border-radius: 100px;
  cursor: pointer;
}

.nav-close-btn:hover {
  background: var(--bg-card-hover);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav__list {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    padding: 1rem clamp(1rem, 4vw, 3rem) 2rem;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .site-nav__list.is-open {
    display: flex;
  }

  .site-nav__link {
    display: flex;
    min-height: 52px;
    font-size: 1.05rem;
    padding: 0 0.5rem;
    border-radius: var(--radius-sm);
  }

  .nav-close-item {
    display: block;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
  }
}

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 100vh;
  min-height: 100svh;
  padding: calc(var(--header-h) + 2rem) 0 clamp(3rem, 8vh, 6rem);
  overflow: hidden;
  background: var(--bg-primary);
  isolation: isolate;
}

.hero__bg,
.hero__bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
}

.hero__bg img {
  object-fit: cover;
  object-position: 70% 50%;
}

/* 画像の上に敷く装飾の陰影（文字の背景ではない） */
.hero__shade {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(6,6,12,0.85) 0%, rgba(6,6,12,0.35) 45%, rgba(6,6,12,0) 70%),
    linear-gradient(0deg, rgba(6,6,12,1) 0%, rgba(6,6,12,0) 35%);
  pointer-events: none;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* 文字を載せる面は不透明の単色（TalkBack の背景色読み上げ対策） */
.hero__content {
  position: relative;
  width: min(560px, calc(100% - 2rem));
  margin-left: clamp(1rem, 6vw, 6rem);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  background: var(--bg-solid-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 80px -20px #000;
}

.hero__content::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 24px;
  right: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--crimson), #FFFFFF 50%, var(--azure));
  border-radius: 2px;
}

.hero__eyebrow {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.hero__eyebrow span {
  color: var(--gold-text);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 10vw, 6rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1;
  margin-bottom: 0.35em;
  color: var(--text-primary);
}

.hero__tagline {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.motion-toggle {
  position: absolute;
  right: clamp(1rem, 4vw, 3rem);
  bottom: clamp(1rem, 3vh, 2rem);
  min-height: 44px;
  padding: 0 1.1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-primary);
  background: var(--bg-solid-panel);
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  cursor: pointer;
}

.motion-toggle:hover {
  border-color: var(--text-secondary);
}

@media (max-width: 768px) {
  .hero {
    align-items: flex-end;
    padding-bottom: 5.5rem;
  }

  .hero__bg img {
    object-position: 50% 20%;
  }

  .hero__shade {
    background: linear-gradient(0deg, rgba(6,6,12,1) 0%, rgba(6,6,12,0.6) 35%, rgba(6,6,12,0) 60%);
  }

  .hero__content {
    margin: 0 auto;
  }

  .hero__actions .btn {
    flex: 1 1 auto;
  }

  .motion-toggle {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
  }
}

/* ============================================
   Latest Release
   ============================================ */
.latest {
  background: var(--bg-primary);
}

.latest__inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.latest__art {
  isolation: isolate;
  position: relative;
  order: -1; /* 見た目は左（上）、読み上げは見出しが先 */
}

.latest__art::after {
  content: "";
  position: absolute;
  inset: 10% -6% -6% 10%;
  z-index: -1;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 30% 30%, var(--crimson-glow), transparent 60%),
              radial-gradient(circle at 70% 70%, var(--azure-glow), transparent 60%);
  filter: blur(30px);
}

.latest__art img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 80px -30px #000;
}

.latest__title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin-bottom: 0.2em;
}

.latest__meta {
  font-family: var(--font-display);
  color: var(--gold-text);
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.latest__text {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 34em;
}

.latest__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (max-width: 768px) {
  .latest__inner {
    grid-template-columns: 1fr;
  }

  .latest__art {
    max-width: 420px;
  }
}

/* ============================================
   About
   ============================================ */
.about {
  background: var(--bg-secondary);
}

.about__intro {
  color: var(--text-secondary);
  max-width: 40em;
  margin-bottom: 3.5rem;
  line-height: 2.1;
  font-size: 1.05rem;
}

.about__members {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}

.member {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.member:hover {
  transform: translateY(-4px);
}

.member--kiri:hover { border-color: var(--azure); }
.member--ren:hover  { border-color: var(--crimson); }

.member__visual {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.member__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
  transition: transform 1.2s var(--ease);
}

.member:hover .member__visual img {
  transform: scale(1.04);
}

.member__visual::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 40%;
  background: linear-gradient(0deg, var(--bg-card), transparent);
}

.member__body {
  position: relative;
  padding: 0 clamp(1.5rem, 3vw, 2.25rem) 2.25rem;
  background: var(--bg-card);
}

.member__name {
  font-size: clamp(2.2rem, 4vw, 2.8rem);
  letter-spacing: 0.08em;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.member--kiri .member__name { color: var(--azure-text); }
.member--ren  .member__name { color: var(--crimson-text); }

.member__role {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

.member__desc {
  color: var(--text-secondary);
  line-height: 1.95;
}

.member__lyric {
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border-subtle);
}

.member__lyric-text {
  display: block;
  color: var(--text-primary);
  line-height: 1.8;
}

.member__lyric-source {
  display: block;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

/* ============================================
   Discography
   ============================================ */
.discography {
  background: var(--bg-primary);
}

.album {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2.5rem;
}

.album::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
}

.album--1st::before { background: linear-gradient(90deg, var(--crimson), var(--azure)); }
.album--2nd::before { background: linear-gradient(90deg, #E8E2D6, #9CC8F0); }
.album--3rd::before { background: linear-gradient(90deg, #F2B35A, #F7E3B5); }

.album__header {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
}

.album__artwork {
  width: 240px;
  height: 240px;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: var(--bg-secondary);
  flex-shrink: 0;
  box-shadow: 0 24px 50px -24px #000;
}

.album__info {
  flex: 1;
  min-width: 220px;
}

.album__number {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-text);
  margin-bottom: 0.3rem;
}

.album__title {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin-bottom: 0.5rem;
}

.album__concept {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

/* Track list：li の中に本物の button を置く（リストの項目数を保ったまま押せる） */
.album__tracks {
  list-style: none;
  border-top: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 960px) {
  .album__tracks {
    grid-template-columns: 1fr 1fr;
    column-gap: 1px;
    background: var(--border-subtle);
  }
}

.album__tracks li {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-subtle);
}

.track {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  min-height: 60px;
  padding: 0.75rem clamp(1.25rem, 3vw, 2rem);
  font: inherit;
  color: var(--text-primary);
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: background var(--transition);
}

.track:hover {
  background: var(--bg-card-hover);
}

.track:focus-visible {
  outline-offset: -4px;
  box-shadow: none;
  background: var(--bg-card-hover);
}

.track__number {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-muted);
  min-width: 2em;
}

.track__title {
  flex: 1;
  font-weight: 500;
}

.track__theme {
  display: none;
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (min-width: 640px) and (max-width: 959px) {
  .track__theme {
    display: block;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

.track__vocal {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.15em 0.75em;
  border-radius: 100px;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.track__vocal--kiri { color: var(--azure-text); }
.track__vocal--ren  { color: var(--crimson-text); }
.track__vocal--both { color: var(--gold-text); }

.track__go {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.track:hover .track__go {
  color: var(--text-primary);
}

@media (max-width: 480px) {
  .track__go {
    display: none;
  }
}

/* ============================================
   Lyrics Dialog
   ============================================ */
.lyrics-modal {
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  margin: 0;
  padding: clamp(0.75rem, 3vw, 2rem);
  border: 0;
  background: transparent;
  color: var(--text-primary);
  overflow-y: auto;
}

.lyrics-modal::backdrop {
  background: rgba(4, 4, 10, 0.92);
}

.lyrics-modal__content {
  width: 100%;
  max-width: 680px;
  margin: clamp(1rem, 6vh, 4rem) auto;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 3rem);
  position: relative;
  animation: modalIn 0.35s var(--ease);
}

@keyframes modalIn {
  from { transform: translateY(16px); }
  to   { transform: translateY(0); }
}

.lyrics-modal__close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--text-primary);
  cursor: pointer;
}

.lyrics-modal__close:hover {
  background: var(--bg-card-hover);
}

.lyrics-modal__album {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-text);
  margin-bottom: 0.3rem;
  padding-right: 56px;
}

.lyrics-modal__title {
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  margin-bottom: 0.4rem;
  padding-right: 56px;
}

.lyrics-modal__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.lyrics-modal__player {
  margin-bottom: 2rem;
}

.lyrics-modal__video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: #000;
}

.lyrics-modal__youtube-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 0.5rem;
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.lyrics-modal__youtube-link:hover {
  color: var(--azure-text);
}

.lyrics-modal__lyrics {
  line-height: 2.2;
  color: var(--text-primary);
  white-space: pre-line;
  font-size: 1.02rem;
}

.lyrics-modal__lyrics p {
  margin-bottom: 1.6em;
}

.lyrics-modal__footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.lyrics-modal__close-bottom {
  min-height: 48px;
  padding: 0 2.2rem;
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 1rem;
  cursor: pointer;
}

.lyrics-modal__close-bottom:hover {
  border-color: var(--text-secondary);
}

/* ============================================
   Lyrics Showcase
   ============================================ */
.showcase {
  background: var(--bg-secondary);
  overflow: hidden;
}

.showcase__list {
  display: flex;
  flex-direction: column;
  gap: clamp(3.5rem, 9vw, 7rem);
  margin-top: 1rem;
}

.showcase__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 4.5rem);
  align-items: center;
}

/* 偶数番目は画像と文字の左右を入れ替える（DOM 順は変えない） */
.showcase__item:nth-child(even) .showcase__visual {
  order: 2;
}

.showcase__visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 40px 80px -40px #000;
}

.showcase__img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}

.showcase__item:hover .showcase__img {
  transform: scale(1.03);
}

.showcase__text {
  position: relative;
  padding-left: 1.5rem;
  border-left: 2px solid var(--border-strong);
}

.showcase__quote {
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 500;
  line-height: 2;
  color: var(--text-primary);
  max-width: 24em;
}

.showcase__source {
  color: var(--text-muted);
  margin-top: 1.25rem;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .showcase__item {
    grid-template-columns: 1fr;
  }

  .showcase__item:nth-child(even) .showcase__visual {
    order: 0;
  }

  .showcase__visual {
    max-width: 440px;
  }
}

/* ============================================
   Listen
   ============================================ */
.listen {
  position: relative;
  background:
    radial-gradient(ellipse 50% 60% at 15% 100%, rgba(220, 20, 60, 0.18), transparent 70%),
    radial-gradient(ellipse 50% 60% at 85% 0%, rgba(0, 127, 255, 0.18), transparent 70%),
    var(--bg-primary);
}

.stream-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  list-style: none;
}

.stream-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 72px;
  padding: 1rem 1.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.stream-link:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.stream-link svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.stream-link__name {
  flex: 1;
}

.stream-link::after {
  content: "↗";
  color: var(--text-muted);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 0;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.site-footer__logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}

.site-footer__copy {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ============================================
   Scroll reveal
   - opacity は使わない（TalkBack 対策）。位置だけ動かす
   - JS が html に .js-reveal を付けたときだけ有効（JS なしでも全部見える）
   ============================================ */
.js-reveal .reveal {
  transform: translateY(28px);
  transition: transform 0.9s var(--ease);
}

.js-reveal .reveal.is-visible {
  transform: none;
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html {
    scroll-behavior: auto;
  }

  .js-reveal .reveal {
    transform: none;
  }
}

/* ============================================
   Forced colors (Windows ハイコントラスト)
   ============================================ */
@media (forced-colors: active) {
  .hero__content,
  .album,
  .member,
  .stream-link,
  .lyrics-modal__content {
    border: 1px solid CanvasText;
  }

  .track__vocal {
    border-color: CanvasText;
  }
}