/* ===================================
   B案: エモーショナル
   - ダークグレー基調＋暖色アクセント
   - 大きめタイポグラフィ
   - アーティスト感強め
   - 参考：Aimer、米津玄師
=================================== */

:root {
  /* Colors */
  --color-bg: #0D0D0D;
  --color-bg-alt: #1A1A1A;
  --color-bg-card: #242424;
  --color-text: #FFFFFF;
  --color-text-muted: #999999;
  --color-accent: #E07B39;
  --color-accent-hover: #F08C4A;
  --color-accent-glow: rgba(224, 123, 57, 0.3);
  --color-border: #333333;

  /* Typography */
  --font-primary: 'Noto Sans JP', sans-serif;
  --font-display: 'Playfair Display', serif;

  /* Spacing */
  --section-padding: 120px 0;
  --container-width: 1200px;
  --container-padding: 0 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.3s ease;
}

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

ul, ol {
  list-style: none;
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 16px 36px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  border-radius: 0;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  text-transform: uppercase;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 0 30px var(--color-accent-glow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-text {
  color: var(--color-accent);
  padding: 0;
  font-weight: 500;
  letter-spacing: 0.15em;
}

.btn-text:hover {
  color: var(--color-accent-hover);
}

/* Section Title */
.section-title {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  margin-bottom: 60px;
  text-align: center;
  position: relative;
}

.section-title span {
  position: relative;
  display: inline-block;
}

.section-title span::before,
.section-title span::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border));
}

.section-title span::before {
  right: calc(100% + 20px);
}

.section-title span::after {
  left: calc(100% + 20px);
  background: linear-gradient(90deg, var(--color-border), transparent);
}

.section {
  padding: var(--section-padding);
}

/* ===================================
   Header
=================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.2em;
}

.nav-list {
  display: flex;
  gap: 48px;
}

.nav-list a {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.nav-list a:hover {
  color: var(--color-accent);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background-color: var(--color-text);
}

/* ===================================
   Hero
=================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 30% 20%, var(--color-accent-glow) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(224, 123, 57, 0.1) 0%, transparent 40%);
  z-index: 0;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-subtitle {
  font-size: 13px;
  letter-spacing: 0.5em;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(56px, 10vw, 100px);
  font-weight: 400;
  letter-spacing: 0.2em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: 48px;
  letter-spacing: 0.1em;
}

.hero-cta {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  margin: 12px auto 0;
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.5; transform: scaleY(0.7); }
}

/* ===================================
   News
=================================== */
.news {
  background-color: var(--color-bg-alt);
}

.news-list {
  max-width: 900px;
  margin: 0 auto 48px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  transition: all 0.3s ease;
}

.news-item:hover {
  padding-left: 16px;
  border-color: var(--color-accent);
}

.news-date {
  font-size: 12px;
  color: var(--color-text-muted);
  min-width: 100px;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
}

.news-tag {
  font-size: 10px;
  padding: 5px 14px;
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.news-link {
  flex: 1;
  font-size: 15px;
}

.news-link:hover {
  color: var(--color-accent);
}

/* ===================================
   Music
=================================== */
.album-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  margin-bottom: 100px;
}

.album-cover {
  position: relative;
}

.album-cover img {
  position: relative;
  z-index: 1;
}

.album-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  filter: blur(60px);
  z-index: 0;
}

.album-label {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  text-transform: uppercase;
}

.album-title {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 400;
  margin: 12px 0 32px;
  letter-spacing: 0.1em;
}

.album-description {
  color: var(--color-text-muted);
  margin-bottom: 40px;
  line-height: 2;
}

.track-list {
  counter-reset: track;
  margin-bottom: 40px;
}

.track-list li {
  counter-increment: track;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text-muted);
  transition: all 0.3s ease;
}

.track-list li:hover {
  color: var(--color-text);
  padding-left: 8px;
}

.track-list li::before {
  content: counter(track, decimal-leading-zero) ".";
  margin-right: 20px;
  color: var(--color-accent);
  font-family: var(--font-display);
}

.streaming-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.streaming-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.streaming-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.streaming-btn.spotify:hover { border-color: #1DB954; color: #1DB954; }
.streaming-btn.apple:hover { border-color: #FC3C44; color: #FC3C44; }
.streaming-btn.amazon:hover { border-color: #00A8E1; color: #00A8E1; }

.subsection-title {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  text-transform: uppercase;
}

.singles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.single-card {
  background-color: var(--color-bg-card);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.single-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background-color: var(--color-accent);
  transition: height 0.3s ease;
}

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

.single-card:hover::before {
  height: 100%;
}

.single-date {
  font-size: 11px;
  color: var(--color-text-muted);
  font-family: var(--font-display);
}

.single-title {
  font-size: 16px;
  font-weight: 400;
  margin-top: 12px;
}

/* ===================================
   Biography
=================================== */
.biography {
  background-color: var(--color-bg-alt);
}

.bio-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
  align-items: start;
}

.bio-image {
  position: relative;
}

.bio-image img {
  filter: grayscale(20%);
  transition: filter 0.5s ease;
}

.bio-image:hover img {
  filter: grayscale(0%);
}

.bio-name {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 400;
  margin-bottom: 8px;
  letter-spacing: 0.1em;
}

.bio-reading {
  display: block;
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  margin-top: 12px;
}

.bio-role {
  font-size: 12px;
  color: var(--color-accent);
  margin-bottom: 40px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.bio-description p {
  margin-bottom: 20px;
  color: var(--color-text-muted);
  font-size: 15px;
}

.bio-quote {
  margin-top: 40px;
  padding: 32px;
  background-color: var(--color-bg-card);
  position: relative;
}

.bio-quote::before {
  content: '"';
  font-family: var(--font-display);
  font-size: 80px;
  color: var(--color-accent);
  opacity: 0.3;
  position: absolute;
  top: 0;
  left: 20px;
  line-height: 1;
}

.bio-quote blockquote {
  font-size: 16px;
  font-style: italic;
  color: var(--color-text);
  position: relative;
  z-index: 1;
}

/* ===================================
   Share Buttons
=================================== */
.share-buttons {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all 0.3s ease;
}

.share-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.share-btn.share-x:hover {
  background-color: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-bg);
}

.share-btn.share-fb:hover {
  background-color: #1877F2;
  border-color: #1877F2;
  color: white;
}

.share-btn.share-line:hover {
  background-color: #00B900;
  border-color: #00B900;
  color: white;
}

/* ===================================
   SNS Section
=================================== */
.sns {
  background-color: var(--color-bg);
}

.sns-description {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 60px;
  letter-spacing: 0.1em;
}

.sns-feed {
  background-color: var(--color-bg-alt);
  padding: 48px;
  margin-bottom: 24px;
  text-align: center;
}

.sns-feed-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  color: var(--color-text);
  font-size: 14px;
  letter-spacing: 0.1em;
}

.instagram-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-bottom: 40px;
}

.instagram-post {
  aspect-ratio: 1;
  overflow: hidden;
}

.instagram-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 11px;
  border: 1px solid var(--color-border);
}

.instagram-placeholder p {
  font-weight: 500;
  margin-bottom: 4px;
}

.instagram-placeholder span {
  font-size: 9px;
  opacity: 0.7;
}

.twitter-feed {
  margin-top: 24px;
}

.twitter-timeline-placeholder {
  background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg) 100%);
  padding: 60px;
  margin-bottom: 40px;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.twitter-timeline-placeholder p {
  font-weight: 500;
  margin-bottom: 8px;
  font-size: 14px;
}

.twitter-timeline-placeholder span {
  font-size: 11px;
  opacity: 0.7;
}

.twitter-timeline-container {
  margin-bottom: 40px;
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-bg-card);
}

.sns-profile-link {
  text-align: center;
  padding: 40px 20px;
  background: var(--color-bg-card);
  border-radius: 12px;
}

.sns-profile-link p {
  margin-bottom: 20px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===================================
   Live
=================================== */
.live-list {
  max-width: 900px;
  margin: 0 auto;
}

.live-item {
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 40px;
  background-color: var(--color-bg-alt);
  margin-bottom: 16px;
  border-left: 3px solid transparent;
  transition: all 0.3s ease;
}

.live-item:hover {
  border-left-color: var(--color-accent);
  background-color: var(--color-bg-card);
}

.live-date {
  text-align: center;
  min-width: 80px;
}

.live-month {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
}

.live-day {
  display: block;
  font-family: var(--font-display);
  font-size: 48px;
  line-height: 1.1;
}

.live-year {
  display: block;
  font-size: 11px;
  color: var(--color-text-muted);
}

.live-info {
  flex: 1;
}

.live-title {
  font-size: 20px;
  font-weight: 400;
  margin-bottom: 8px;
}

.live-venue {
  font-size: 14px;
  color: var(--color-text-muted);
}

/* ===================================
   Shop
=================================== */
.shop {
  background-color: var(--color-bg-alt);
}

.shop-description {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 60px;
  letter-spacing: 0.05em;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.product-card {
  background-color: var(--color-bg-card);
  overflow: hidden;
  transition: all 0.3s ease;
  position: relative;
}

.product-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-image {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background-color: var(--color-bg);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg) 100%);
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.product-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background-color: var(--color-accent);
  color: var(--color-bg);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.product-info {
  padding: 24px;
}

.product-name {
  font-size: 16px;
  font-weight: 400;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.product-description {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.product-price {
  font-size: 24px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 20px;
  font-family: var(--font-display);
}

.product-tax {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-text-muted);
  font-family: var(--font-primary);
}

.product-btn {
  width: 100%;
  text-align: center;
  padding: 14px 24px;
}

.shop-note {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* ===================================
   Contact
=================================== */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
}

.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.contact-list dt {
  font-size: 11px;
  color: var(--color-accent);
  margin-bottom: 8px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.contact-list dd {
  font-size: 18px;
  margin-bottom: 32px;
}

.contact-form {
  background-color: var(--color-bg-alt);
  padding: 48px;
}

.form-group {
  margin-bottom: 28px;
}

.form-group label {
  display: block;
  font-size: 11px;
  margin-bottom: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 16px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: inherit;
  font-size: 15px;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group select {
  cursor: pointer;
}

/* ===================================
   Footer
=================================== */
.footer {
  padding: 80px 24px;
  text-align: center;
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-social a {
  color: var(--color-text-muted);
  transition: all 0.3s ease;
}

.footer-social a:hover {
  color: var(--color-accent);
}

.footer-copyright {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

/* ===================================
   Responsive
=================================== */
@media (max-width: 1024px) {
  .album-featured {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .album-cover {
    max-width: 500px;
    margin: 0 auto;
  }

  .album-title {
    font-size: 48px;
  }

  .singles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bio-content {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .bio-image {
    max-width: 400px;
    margin: 0 auto;
  }

  .instagram-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
  }

  .nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 48px;
    letter-spacing: 0.1em;
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .singles-grid {
    grid-template-columns: 1fr;
  }

  .live-item {
    flex-direction: column;
    text-align: center;
    gap: 32px;
    padding: 32px;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 32px;
  }

  .section-title span::before,
  .section-title span::after {
    width: 30px;
  }

  .share-buttons {
    width: 100%;
    justify-content: flex-start;
    margin-left: 0;
    margin-top: 12px;
  }

  .instagram-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sns-feed {
    padding: 32px;
  }

  .product-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto 48px;
  }
}