/* ==========================================================
   Animal X Orchestra — Design System
   Light-first, warm-neutral palette with a single coral accent.
   Dark mode via [data-theme="dark"] (auto-detected + toggle).
   ========================================================== */

:root {
  --bg: #faf9f5;
  --surface: #ffffff;
  --surface-2: #f3f1ea;
  --ink: #1f1e1b;
  --ink-soft: #4a4741;
  --muted: #75715f;
  --border: #e6e3d8;
  --accent: #d97757;
  --accent-strong: #c05f3f;
  --accent-soft: #f6e5dd;
  --shadow: 0 1px 2px rgba(31, 30, 27, 0.04), 0 8px 24px rgba(31, 30, 27, 0.06);
  --shadow-lift: 0 2px 4px rgba(31, 30, 27, 0.06), 0 16px 40px rgba(31, 30, 27, 0.10);
  --radius: 14px;
  --radius-sm: 10px;
  --font-serif: "Newsreader", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
}

[data-theme="dark"] {
  --bg: #1c1b19;
  --surface: #262523;
  --surface-2: #2e2d2a;
  --ink: #f0eee6;
  --ink-soft: #cfccc0;
  --muted: #a09b8a;
  --border: #3b3934;
  --accent: #e08b6d;
  --accent-strong: #eb9d81;
  --accent-soft: #3a2c26;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.25), 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.3), 0 16px 40px rgba(0, 0, 0, 0.35);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
}

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

a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}
.logo:hover { text-decoration: none; opacity: 0.75; }
.logo .hat { margin-right: 6px; }

.main-nav ul {
  display: flex;
  gap: 4px;
  list-style: none;
}

.main-nav a {
  display: block;
  padding: 7px 14px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  transition: background 0.15s ease, color 0.15s ease;
}
.main-nav a:hover { background: var(--surface-2); color: var(--ink); text-decoration: none; }
.main-nav a.active { background: var(--surface-2); color: var(--ink); font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 8px; }

.theme-toggle, .mobile-nav-toggle {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}
.theme-toggle:hover, .mobile-nav-toggle:hover { background: var(--surface-2); }
.theme-toggle svg, .mobile-nav-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.mobile-nav-toggle { display: none; }

@media (max-width: 800px) {
  .mobile-nav-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    display: none;
    padding: 12px 24px 20px;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 2px; }
  .main-nav a { padding: 12px 14px; border-radius: var(--radius-sm); font-size: 1rem; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  margin-bottom: 20px;
}

.hero .lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin-bottom: 32px;
}

.hero-visual img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
}

@media (max-width: 800px) {
  .hero { padding: 48px 0 24px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
}

.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-strong); color: #fff; }
[data-theme="dark"] .btn-primary { color: #1c1b19; }

.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--border); }
.btn-secondary:hover { background: var(--surface-2); }

/* ---------- Sections ---------- */
.section { padding: 64px 0; }

.section-header { max-width: 720px; margin-bottom: 40px; }
.section-header.center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 10px;
}

.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 14px;
}

.section-header p { color: var(--muted); }

.page-title {
  padding: 64px 0 8px;
}
.page-title h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 14px;
}
.page-title p { color: var(--muted); max-width: 640px; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 800px) { .features-grid { grid-template-columns: 1fr; } }

.feature-card { padding: 28px; }

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.feature-icon svg { width: 22px; height: 22px; }

.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature-card p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Audio player ---------- */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 800px) { .tracks-grid { grid-template-columns: 1fr; } }

.track-card { padding: 20px; display: flex; flex-direction: column; gap: 14px; }

.track-head { display: flex; gap: 14px; align-items: center; }

.track-art {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}

.track-title h3 { font-size: 1.05rem; line-height: 1.4; }
.track-title p { font-size: 0.82rem; color: var(--muted); }

.spectrum-wrap {
  height: 88px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.spectrum-wrap canvas { width: 100%; height: 100%; display: block; }

.player { display: flex; align-items: center; gap: 12px; }

.play-btn {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s ease, transform 0.1s ease;
}
.play-btn:hover { background: var(--accent-strong); transform: scale(1.05); }
[data-theme="dark"] .play-btn { color: #1c1b19; }
.play-btn svg { width: 18px; height: 18px; }
.play-btn .icon-pause { display: none; }
.play-btn.playing .icon-pause { display: block; }
.play-btn.playing .icon-play { display: none; }

.progress {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: var(--accent);
  border-radius: 999px;
}

.time { font-size: 0.78rem; color: var(--muted); font-variant-numeric: tabular-nums; min-width: 40px; text-align: right; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  padding: 18px 22px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--muted);
  transition: transform 0.2s ease;
  line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-answer { padding: 0 22px 20px; color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Story ---------- */
.story-body {
  max-width: 680px;
  margin: 0 auto;
  padding-bottom: 24px;
}
.story-body h2 {
  font-size: 1.5rem;
  margin: 48px 0 20px;
}
.story-body p { margin-bottom: 1.4em; color: var(--ink-soft); }

.story-figure { margin: 36px 0; }
.story-figure img { border-radius: var(--radius); box-shadow: var(--shadow-lift); }
.story-figure figcaption { text-align: center; font-size: 0.85rem; color: var(--muted); margin-top: 12px; }

.story-quote {
  margin: 36px 0;
  padding: 28px 32px;
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.7;
}

.member-roll {
  margin: 36px 0;
  padding: 26px 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.member-roll li {
  list-style: none;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  color: var(--ink-soft);
}
.member-roll li:last-child { border-bottom: none; }
.member-roll strong { color: var(--ink); margin-right: 8px; }

.next-chapter {
  max-width: 680px;
  margin: 24px auto 0;
  padding: 32px;
  text-align: center;
  background: var(--surface-2);
  border-radius: var(--radius);
}
.next-chapter h3 { font-size: 1.25rem; margin-bottom: 12px; }
.next-chapter p { color: var(--ink-soft); }

/* ---------- Songs ---------- */
.songs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 960px) { .songs-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .songs-grid { grid-template-columns: 1fr; } }

.song-card { overflow: hidden; display: flex; flex-direction: column; }
.song-card > img { aspect-ratio: 1; object-fit: cover; width: 100%; }
.song-card .song-body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.song-card h3 { font-size: 1.15rem; }
.song-concept { font-size: 0.82rem; font-weight: 700; color: var(--accent-strong); letter-spacing: 0.02em; }
.song-artist { font-size: 0.82rem; color: var(--muted); }
.song-card .song-body > p:last-of-type { font-size: 0.92rem; color: var(--ink-soft); }
.song-card .player { margin-top: auto; padding-top: 14px; }

.albums-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 960px) { .albums-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .albums-grid { grid-template-columns: 1fr; } }

.album-card { overflow: hidden; }
.album-card > img { aspect-ratio: 1; object-fit: cover; width: 100%; }
.album-cover-placeholder {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 1.2rem;
}
.album-card .album-body { padding: 20px 22px 24px; }
.album-card h3 { font-size: 1.15rem; margin-bottom: 4px; }
.album-year { font-size: 0.82rem; color: var(--muted); margin-bottom: 10px; }
.album-card .album-body > p:last-child { font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- Members ---------- */
.leader-card {
  display: grid;
  grid-template-columns: 300px 1fr;
  overflow: hidden;
  margin-bottom: 20px;
}
.leader-card img { width: 100%; height: 100%; object-fit: cover; }
.leader-card .member-body { padding: 32px 36px; align-self: center; }
@media (max-width: 700px) {
  .leader-card { grid-template-columns: 1fr; }
  .leader-card img { aspect-ratio: 16/10; }
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 960px) { .members-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .members-grid { grid-template-columns: 1fr; } }

.member-card { overflow: hidden; }
.member-card > img { aspect-ratio: 1; object-fit: cover; width: 100%; }
.member-card .member-body { padding: 20px 22px 24px; }

.member-body h3 { font-size: 1.2rem; margin-bottom: 2px; }
.member-role { font-size: 0.82rem; font-weight: 700; color: var(--accent-strong); letter-spacing: 0.04em; margin-bottom: 10px; }
.member-body > p:last-child { font-size: 0.92rem; color: var(--ink-soft); }

.members-table-wrap { overflow-x: auto; }
.members-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 0.92rem;
}
.members-table th, .members-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.members-table td:last-child { white-space: normal; min-width: 220px; }
.members-table th { background: var(--surface-2); font-size: 0.8rem; letter-spacing: 0.05em; color: var(--muted); }
.members-table tr:last-child td { border-bottom: none; }

/* ---------- Request form ---------- */
.request-wrap { max-width: 640px; margin: 0 auto; }

.request-intro { margin-bottom: 32px; color: var(--ink-soft); }

.request-form {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 0.88rem; font-weight: 600; }

.form-group input,
.form-group select,
.form-group textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-group textarea { resize: vertical; }

.form-status { font-size: 0.92rem; display: none; padding: 14px 18px; border-radius: var(--radius-sm); }
.form-status.ok { display: block; background: var(--accent-soft); color: var(--ink); }
.form-status.err { display: block; background: var(--surface-2); color: var(--accent-strong); }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
}
.cta-band h2 { font-size: 1.5rem; margin-bottom: 10px; }
.cta-band p { color: var(--muted); margin-bottom: 24px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
  padding: 40px 0;
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-logo {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--ink);
}
.footer-logo:hover { text-decoration: none; opacity: 0.75; }
.copyright { font-size: 0.82rem; color: var(--muted); }

/* ---------- Reveal animation ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.visible { opacity: 1; transform: none; }
}