/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  line-height: 1.8;
  color: #e8eaf0;
  background: #0a0e1a;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Variables ---------- */
:root {
  --bg: #0a0e1a;
  --bg-elevated: #11162a;
  --text: #e8eaf0;
  --text-muted: #9aa3b9;
  --text-faint: #6a7388;
  --border: rgba(255,255,255,0.08);
  --aurora: #f4a99e;
  --kiri: #c8d4e0;
  --brave: #e85a4f;
  --link: #80a8d4;
  --max: 1100px;
}

/* ---------- Top nav ---------- */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: 32px;
  padding: 14px 20px;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.topnav a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.topnav a:hover { color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px 60px;
  background:
    radial-gradient(ellipse at top, rgba(244, 169, 158, 0.06), transparent 60%),
    radial-gradient(ellipse at bottom, rgba(128, 168, 212, 0.05), transparent 60%),
    var(--bg);
}
.hero-inner { max-width: 720px; }
.hero-logo {
  display: block;
  margin: 0 auto 56px;
  width: clamp(320px, 70vw, 660px);
  height: auto;
  filter: drop-shadow(0 12px 40px rgba(232, 90, 79, 0.18));
}
.hero-jp {
  margin: 0 0 16px;
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 300;
  font-size: clamp(22px, 4vw, 32px);
  letter-spacing: 0.06em;
  line-height: 1.6;
}
.hero-en {
  margin: 0;
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  font-size: clamp(13px, 2vw, 16px);
  letter-spacing: 0.18em;
  color: var(--text-muted);
}
.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 20px;
  color: var(--text-faint);
  animation: bob 2s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ---------- Section base ---------- */
.section {
  padding: 100px 20px;
  border-top: 1px solid var(--border);
}
.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}
.section-heading {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: clamp(28px, 5vw, 42px);
  letter-spacing: 0.04em;
  margin: 0 0 12px;
}
.artist-sub, .policy-sub {
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  margin: 0 0 40px;
  text-transform: uppercase;
}

/* ---------- About ---------- */
.about-body {
  max-width: 680px;
  margin: 32px auto 0;
  font-size: 16px;
}
.about-body p { margin: 0 0 1.2em; }
.about-note {
  margin-top: 2em;
  color: var(--text-muted);
  font-size: 14px;
}
.about-note a { color: var(--link); }

/* ---------- Artist sections ---------- */
.artist .catch {
  margin: 0 0 40px;
  padding: 0;
  border: none;
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 300;
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.8;
  letter-spacing: 0.05em;
  text-align: center;
}
.aurora-section .catch { color: var(--aurora); }
.kiri-section .catch { color: var(--kiri); }
.brave-section .catch { color: var(--brave); }

.artist-body {
  max-width: 720px;
  margin: 0 auto 56px;
  font-size: 15px;
}
.artist-body p { margin: 0 0 1.2em; }

/* aurora arc */
.arc {
  margin: 48px 0;
  padding: 32px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.arc-heading {
  margin: 0 0 24px;
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--aurora);
  text-transform: uppercase;
  font-weight: 500;
}
.arc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.arc-block h4 {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}
.arc-block p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}
.arc-note {
  margin-top: 4px !important;
  font-size: 12px !important;
  color: var(--text-faint) !important;
  font-style: italic;
}

/* release */
.release-heading {
  margin: 56px 0 24px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.release-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}
.release-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s;
}
.release-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.18);
}
.release-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}
.release-card h4 {
  margin: 16px 16px 4px;
  font-size: 16px;
  font-weight: 500;
}
.release-card .release-date {
  margin: 0 16px 8px;
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.05em;
}
.release-card .release-desc {
  margin: 0 16px 16px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.release-link {
  display: block;
  margin: 0 16px 16px;
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text);
  background: rgba(255,255,255,0.06);
  text-decoration: none;
  text-align: center;
  border-radius: 6px;
  letter-spacing: 0.06em;
  transition: background 0.2s;
}
.release-link:hover { background: rgba(255,255,255,0.12); }

/* jacket grid (BRAVE NOTE 全曲クリック) */
.jacket-grid {
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 20px 18px;
}
.jacket-grid a {
  display: block;
  text-decoration: none;
  color: var(--text);
  border-radius: 10px;
  transition: transform 0.2s;
}
.jacket-grid a:hover { transform: translateY(-4px); }
.jacket-grid img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.jacket-grid a:hover img {
  border-color: rgba(232, 90, 79, 0.55);
  box-shadow: 0 10px 28px rgba(232, 90, 79, 0.18);
}
.jacket-caption {
  display: flex;
  gap: 8px;
  align-items: baseline;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
}
.track-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  color: var(--brave);
  letter-spacing: 0.05em;
  min-width: 28px;
  flex-shrink: 0;
}
.brave-note {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
}

/* rights statement */
.rights-statement {
  margin-top: 64px;
  padding: 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.rights-statement h3 {
  margin: 0 0 20px;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.rights-statement h4 {
  margin: 28px 0 12px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--aurora);
}
.rights-statement p,
.rights-statement li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}
.rights-statement ul {
  padding-left: 1.2em;
  margin: 0 0 16px;
}
.rights-statement ul li { margin-bottom: 6px; }
.rights-statement table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 13px;
}
.rights-statement th,
.rights-statement td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.rights-statement th {
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.06em;
  font-size: 12px;
  text-transform: uppercase;
}
.rights-jp {
  margin-top: 24px !important;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 13px !important;
  color: var(--text-muted) !important;
}

/* ---------- Policy section ---------- */
.policy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.policy-item {
  padding: 28px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.policy-item h3 {
  margin: 0 0 12px;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--link);
  font-weight: 500;
}
.policy-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
}

/* ---------- Footer ---------- */
.footer {
  padding: 80px 20px 60px;
  background: #06091a;
  text-align: center;
}
.footer-inner { max-width: 600px; margin: 0 auto; }
.footer-logo {
  width: 64px;
  height: auto;
  margin-bottom: 16px;
}
.footer-name {
  margin: 0 0 32px;
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--text);
}
.sns-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.sns-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: color 0.2s, border-color 0.2s;
}
.sns-links a:hover {
  color: var(--text);
  border-color: rgba(255,255,255,0.2);
}
.copy {
  margin: 0;
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}

/* ---------- Mobile adjustments ---------- */
@media (max-width: 640px) {
  .topnav {
    gap: 18px;
    padding: 12px 16px;
    font-size: 12px;
  }
  .section { padding: 70px 18px; }
  .hero { padding: 100px 18px 50px; }
  .hero-logo { width: 86%; margin-bottom: 36px; }
  .jacket-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 16px 12px;
  }
  .jacket-caption { font-size: 12px; }
  .arc { padding: 24px; }
  .rights-statement { padding: 24px; }
  .policy-item { padding: 22px; }
}