/* ===========================
    RESET & BASE
=========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --black:        #080808;
  --white:        #f0ede8;
  --accent:       #c8a96e;
  --accent-dim:   rgba(200,169,110,0.3);
  --accent-glow:  rgba(200,169,110,0.08);
  --red-dim:      rgba(139,26,26,0.12);
  --dim:          #141414;
  --mid:          #1e1e1e;
  --text-muted:   #888;
  --border:       rgba(200,169,110,0.2);
  --border-faint: rgba(200,169,110,0.1);
}
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===========================
    NAVIGATION
=========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 4rem;
  transition: background 0.4s, padding 0.4s;
}
.nav.scrolled {
  background: rgba(8,8,8,0.97);
  padding: 0.9rem 4rem;
  border-bottom: 0.5px solid var(--border-faint);
}
.nav-logo {
  font-family: 'Cinzel', serif;
  font-size: 1.25rem;
  letter-spacing: 0.35em;
  color: var(--white);
  font-weight: 600;
  line-height: 1;
}
.nav-logo small {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.6rem;
  color: var(--text-muted);
  display: block;
  letter-spacing: 0.25em;
  margin-top: 0.3rem;
  font-weight: 300;
}
.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  color: var(--white);
  transition: color 0.3s;
  font-weight: 400;
}
.nav-links a:hover { color: var(--accent); }
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--white);
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(8,8,8,0.98);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}
.nav-drawer.open { display: flex; }
.nav-drawer a {
  font-size: 1rem;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  transition: color 0.3s;
  font-weight: 300;
}
.nav-drawer a:hover { color: var(--accent); }

/* ===========================
    HERO
=========================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 28% 55%, var(--red-dim) 0%, transparent 55%),
    radial-gradient(ellipse at 72% 28%, rgba(200,169,110,0.06) 0%, transparent 50%),
    linear-gradient(160deg, #0e0e0e 0%, #080808 50%, #0b0505 100%);
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg,
      transparent, transparent 79px,
      rgba(200,169,110,0.025) 79px, rgba(200,169,110,0.025) 80px
    ),
    repeating-linear-gradient(90deg,
      transparent, transparent 79px,
      rgba(200,169,110,0.015) 79px, rgba(200,169,110,0.015) 80px
    );
}
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}
/* カバー画像 */
.hero-cover-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}
.hero-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  animation: heroFadeUp 1.4s cubic-bezier(0.22,1,0.36,1) both;
}
.hero-cover-sp { display: none; }
.hero-cover-fade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom,
      rgba(8,8,8,0.6)  0%,
      rgba(8,8,8,0)    18%,
      rgba(8,8,8,0)    60%,
      rgba(8,8,8,0.9)  88%,
      rgba(8,8,8,1)    100%
    );
}
.hero-eyebrow-fixed {
  position: absolute;
  left: 50%;
  bottom: 15%;
  transform: translateX(-50%);
  z-index: 3;
  font-size: 0.62rem;
  letter-spacing: 0.55em;
  color: rgba(200,169,110,0.75);
  font-weight: 400;
  font-family: 'Montserrat', sans-serif;
  white-space: nowrap;
}
.hero-scroll {
  position: absolute;
  bottom: 2.8rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  z-index: 3;
}
.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2.2s ease infinite;
}
@keyframes scrollPulse {
  0%,100% { opacity: 0.3; transform: scaleY(1); }
  50%      { opacity: 0.9; transform: scaleY(1.1); }
}
.hero-scroll-label {
  font-size: 0.55rem;
  letter-spacing: 0.4em;
  color: var(--text-muted);
  animation: scrollPulse 2.2s ease infinite;
}

/* ===========================
    SECTION COMMON
=========================== */
.section {
  padding: 8rem 4rem;
  max-width: 1160px;
  margin: 0 auto;
}
.section-label {
  font-size: 0.58rem;
  letter-spacing: 0.55em;
  color: var(--accent);
  margin-bottom: 0.8rem;
  font-weight: 400;
}
.section-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--white);
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.section-rule {
  width: 36px;
  height: 1px;
  background: var(--accent);
  opacity: 0.55;
  margin-bottom: 3.5rem;
}

/* ===========================
    NEWS
=========================== */
.news-list {
  border-top: 0.5px solid var(--border-faint);
}
.news-item {
  display: grid;
  grid-template-columns: 110px 90px 1fr;
  align-items: center;
  gap: 1.8rem;
  padding: 1.6rem 1rem;
  border-bottom: 0.5px solid var(--border-faint);
  cursor: pointer;
  transition: background 0.25s, padding-left 0.25s;
}
.news-item:hover {
  background: var(--accent-glow);
  padding-left: 1.8rem;
}
.news-date {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  font-family: 'Montserrat', sans-serif;
  font-weight: 300;
}
.news-tag {
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  padding: 0.28rem 0.75rem;
  border: 0.5px solid var(--border);
  color: var(--accent);
  font-weight: 400;
  text-align: center;
}
.news-tag.tag-release { border-color: rgba(200,169,110,0.45); color: var(--accent); }
.news-tag.tag-live    { border-color: rgba(139,180,200,0.4);  color: #7eb8d4; }
.news-tag.tag-info    { border-color: rgba(180,180,180,0.3);  color: #aaa; }
.news-text {
  font-size: 0.82rem;
  color: var(--white);
  letter-spacing: 0.06em;
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
  line-height: 1.6;
}

/* ===========================
    DISCOGRAPHY
=========================== */
.disc-tabs {
  display: flex;
  margin-bottom: 3rem;
  border-bottom: 0.5px solid var(--border-faint);
}
.disc-tab {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--text-muted);
  padding: 0.8rem 1.8rem;
  border-bottom: 1px solid transparent;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s;
  font-weight: 400;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.disc-tab.active,
.disc-tab:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.disc-panel { display: none; }
.disc-panel.active { display: block; }
.disc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1.5rem;
}
.disc-card {
  border: 0.5px solid var(--border-faint);
  background: var(--dim);
  overflow: hidden;
  transition: border-color 0.35s, transform 0.35s;
  cursor: pointer;
}
.disc-card:hover {
  border-color: var(--border);
  transform: translateY(-5px);
}
.disc-info { padding: 1.2rem 1.4rem 1.5rem; }
.disc-type {
  font-size: 0.58rem;
  letter-spacing: 0.35em;
  color: var(--accent);
  margin-bottom: 0.5rem;
  font-weight: 400;
}
.disc-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.92rem;
  color: var(--white);
  font-weight: 400;
  margin-bottom: 0.35rem;
  letter-spacing: 0.06em;
  line-height: 1.4;
}
.disc-date {
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}
.disc-tracks {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 0.6rem;
  letter-spacing: 0.04em;
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
  line-height: 1.8;
}
.sound-box {
  margin-top: 4rem;
  border: 0.5px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
  background: rgba(200,169,110,0.025);
}
.sound-title {
  font-family: 'Cinzel', serif;
  font-size: 0.85rem;
  letter-spacing: 0.45em;
  color: var(--accent);
  margin-bottom: 0.8rem;
  font-weight: 600;
}
.sound-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
  margin-bottom: 2rem;
}
/* PC：横並び　SP：縦並び */
.sound-btn-group {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
@media (max-width: 600px) {
  .sound-btn-group {
    flex-direction: column;
    gap: 1rem;
  }
}

/* ===========================
    PROFILE / MEMBER
=========================== */
.profile-section { background: var(--dim); }
.profile-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 8rem 4rem;
}
.member-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-top: 3.5rem;
}
.member-card {
  display: flex;
  gap: 2rem;
  border: 0.5px solid var(--border-faint);
  padding: 2.2rem;
  background: rgba(0,0,0,0.35);
  transition: border-color 0.35s;
}
.member-card:hover { border-color: var(--border); }
.member-photo-wrap { flex-shrink: 0; }
.member-photo-placeholder {
  width: 130px;
  height: 170px;
  background: linear-gradient(170deg, #1c1c1c, #0e0e0e);
  border: 0.5px solid var(--border-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Cinzel', serif;
  font-size: 3rem;
  color: rgba(200,169,110,0.25);
  font-weight: 700;
  letter-spacing: 0.1em;
}
.member-photo-placeholder img {
  width: 130px;
  height: 170px;
  object-fit: cover;
  display: block;
}
.member-info { flex: 1; padding-top: 0.2rem; }
.member-part {
  font-size: 0.58rem;
  letter-spacing: 0.45em;
  color: var(--accent);
  margin-bottom: 0.6rem;
  font-weight: 400;
}
.member-name {
  font-family: 'Cinzel', serif;
  font-size: 1.7rem;
  letter-spacing: 0.12em;
  color: var(--white);
  font-weight: 600;
  line-height: 1;
  margin-bottom: 0.35rem;
}
.member-name-ja {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
  letter-spacing: 0.15em;
  font-weight: 300;
}
.member-table { width: 100%; border-collapse: collapse; }
.member-table tr td {
  padding: 0.5rem 0;
  font-size: 0.73rem;
  letter-spacing: 0.05em;
  vertical-align: top;
  border-bottom: 0.5px solid rgba(200,169,110,0.07);
  line-height: 1.5;
}
.member-table tr:last-child td { border-bottom: none; }
.member-table .td-key {
  color: var(--text-muted);
  width: 80px;
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  font-weight: 400;
  padding-right: 1rem;
}
.member-table .td-val {
  color: var(--white);
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
}

/* ===========================
    BIOGRAPHY
=========================== */
.bio-text {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 2;
  color: rgba(240,237,232,0.75);
  letter-spacing: 0.06em;
  max-width: 680px;
}
.bio-history {
  margin-top: 4rem;
  border-top: 0.5px solid rgba(200,169,110,0.15);
  padding-top: 3rem;
}
.bio-year-block {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0 3rem;
  margin-bottom: 3rem;
}
.bio-year {
  font-family: 'Cinzel', serif;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  padding-top: 0.2rem;
  grid-row: 1 / span 99;
  border-right: 0.5px solid rgba(200,169,110,0.2);
  padding-right: 2rem;
}

/* ===========================
    BIOGRAPHY ACCORDION
    最初の5件を表示、残りはスライドで展開
=========================== */

/* 6件目以降のliを隠す */
.bio-lives li.bio-hidden {
  display: none;
}

/* スライドコンテナ（JSがmax-heightを制御） */
.bio-slide-wrap {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

/* フェードオーバーレイ */
.bio-fade-overlay {
  height: 80px;
  margin-top: -80px;
  background: linear-gradient(to bottom, transparent, var(--black));
  pointer-events: none;
  transition: opacity 0.35s;
}
.bio-expand-wrap.open .bio-fade-overlay {
  opacity: 0;
  height: 0;
  margin-top: 0;
}

/* ===========================
    ボタン統一スタイル
    クリッカブル → 角丸ピル型
    装飾枠・ラベル → スクエア維持
=========================== */
.sound-btn,
.contact-btn,
.bio-expand-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  color: var(--accent);
  background: none;
  border: 0.5px solid var(--border);
  padding: 1rem 2.8rem;
  border-radius: 2rem;
  cursor: pointer;
  transition: background 0.35s, border-color 0.35s, letter-spacing 0.35s;
  white-space: nowrap;
  text-decoration: none;
}
.sound-btn:hover,
.contact-btn:hover,
.bio-expand-btn:hover {
  background: var(--accent-glow);
  border-color: rgba(200,169,110,0.6);
  letter-spacing: 0.45em;
}

/* bio-expand-btn：テキストにフィットした幅・中央揃え */
.bio-expand-btn {
  display: flex;
  width: auto;
  margin: 0.8rem auto 0;
}
.bio-expand-wrap.open .bio-expand-btn {
  margin-top: 2rem;
}
/* 矢印は常に非表示 */
.btn-arrow { display: none !important; }

/* SoundCloud アイコンサイズ */
.sound-icon { width: 16px; height: 16px; fill: var(--accent); flex-shrink: 0; }
.bio-month-block {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 0 1.5rem;
  margin-bottom: 1.5rem;
  align-items: start;
}
.bio-month {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding-top: 0.15rem;
  text-align: right;
}
.bio-lives { list-style: none; margin: 0; padding: 0; }
.bio-lives li {
  display: grid;
  grid-template-columns: 90px 160px 1fr;
  gap: 0 1rem;
  padding: 0.45rem 0;
  border-bottom: 0.5px solid rgba(200,169,110,0.08);
  align-items: baseline;
}
.bio-lives li:last-child { border-bottom: none; }
.bio-date {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  font-weight: 300;
  white-space: nowrap;
}
.bio-venue {
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
}
.bio-event {
  font-size: 0.78rem;
  color: rgba(240,237,232,0.75);
  letter-spacing: 0.04em;
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
  line-height: 1.5;
}

/* ===========================
    CONTACT
=========================== */
.contact-section { text-align: center; padding: 8rem 2rem; }
.contact-inner { max-width: 560px; margin: 0 auto; }
.contact-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-family: 'Noto Serif JP', serif;
  font-weight: 300;
  margin-bottom: 3rem;
  line-height: 2;
}
/* ===========================
    FOOTER
=========================== */
footer {
  border-top: 0.5px solid var(--border-faint);
  padding: 3rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: #050505;
  flex-wrap: wrap;
}
.footer-logo {
  font-family: 'Cinzel', serif;
  font-size: 1.05rem;
  letter-spacing: 0.4em;
  color: var(--white);
  font-weight: 600;
}
.footer-nav { display: flex; gap: 2rem; list-style: none; }
.footer-nav a {
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--text-muted);
  transition: color 0.3s;
  font-weight: 400;
}
.footer-nav a:hover { color: var(--accent); }
.footer-copy {
  font-size: 0.58rem;
  color: rgba(136,136,136,0.45);
  letter-spacing: 0.12em;
}

/* ===========================
    FADE-IN ON SCROLL
=========================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===========================
    RESPONSIVE — 900px
=========================== */
@media (max-width: 900px) {
  .nav { padding: 1.2rem 2rem; }
  .nav.scrolled { padding: 0.8rem 2rem; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .section { padding: 5rem 2rem; }
  .profile-inner { padding: 5rem 2rem; }
  .member-grid { grid-template-columns: 1fr; }
  .disc-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  footer {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
    padding: 2.5rem 1.5rem;
  }
  .footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 1.8rem;
  }
  .bio-year-block {
    grid-template-columns: 48px 1fr;
    gap: 0 1.2rem;
  }
  .bio-year { font-size: 0.95rem; padding-right: 0.8rem; }
  .bio-lives li { grid-template-columns: 1fr; gap: 0.2rem; padding: 0.6rem 0; }
  .bio-venue { font-size: 0.68rem; }
}

/* ===========================
    RESPONSIVE — 600px
=========================== */
@media (max-width: 600px) {
  /* Hero：SP用画像に切り替え */
  .hero-cover    { display: none; }
  .hero-cover-sp {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
  }
  .hero-eyebrow-fixed { top: 48%; }
  /* NEWS：タグをドットに変換 */
  .news-item {
    grid-template-columns: 90px 10px 1fr;
    gap: 0 0.8rem;
    align-items: center;
    padding: 1.2rem 0.8rem;
  }
  .news-tag {
    font-size: 0;
    padding: 0;
    border: none;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
  }
  .news-tag.tag-release { background: var(--accent); }
  .news-tag.tag-live    { background: #7eb8d4; }
  .news-tag.tag-info    { background: #888; }
  /* Discography タブ：均等幅 */
  .disc-tab {
    flex: 1;
    text-align: center;
    padding: 0.9rem 0;
    font-size: 0.6rem;
    letter-spacing: 0.2em;
  }
  /* Profile：縦積み */
  .member-card { flex-direction: column; }
  .member-photo-placeholder {
    width: 100%;
    height: auto;
  }
  .member-photo-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
  }
}