body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic UI", Meiryo, sans-serif;
  background: var(--color-white);
  color: var(--color-black);
  line-height: 1.7;
  font-size: var(--font-base);
}

/* ========================================
   ヘッダー
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-lg) var(--space-lg);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

@media (min-width: 1301px) {
  .header {
    padding: var(--space-lg) var(--space-xl);
  }
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--color-black);
  text-decoration: none;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

@media (min-width: 1201px) {
  .logo {
    letter-spacing: 0.02em;
  }
}

@media (min-width: 1301px) {
  .logo {
    letter-spacing: 0.05em;
  }
}

.nav-links {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  flex-direction: column;
  padding: var(--space-lg);
  gap: var(--space-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  list-style: none;
}

.nav-links.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 951px) {
  .nav-links {
    display: flex;
    position: static;
    flex-direction: row;
    background: transparent;
    padding: 0;
    gap: var(--space-sm);
    box-shadow: none;
    opacity: 1;
    transform: none;
  }
}

.nav-links a {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  color: var(--color-black);
  text-decoration: none;
  font-size: 1rem; /* 16px */
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: opacity 0.3s ease;
}

@media (min-width: 1201px) {
  .nav-links a {
    letter-spacing: 0.05em;
  }
}

@media (min-width: 1301px) {
  .nav-links a {
    letter-spacing: 0.1em;
  }
}

.nav-links a:hover {
  opacity: 0.6;
}

/* メインコンテンツ */
.main {
  padding-top: 80px;
  position: relative;
  z-index: 2;
  transition: opacity 0.4s ease;
}

/* セクション共通 */
.section {
  padding: var(--space-lg) var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
}

@media (min-width: 481px) {
  .section {
    padding: var(--space-xl) var(--space-lg);
  }
}

@media (min-width: 951px) {
  .section {
    padding: var(--space-2xl) var(--space-xl);
  }
}

.section-large {
  padding: calc(var(--space-lg) * 2) var(--space-md);
}

@media (min-width: 481px) {
  .section-large {
    padding: calc(var(--space-xl) * 2) var(--space-lg);
  }
}

@media (min-width: 951px) {
  .section-large {
    padding: calc(var(--space-2xl) * 2) var(--space-xl);
  }
}

/* 固定背景動画 - プロフィールセクションまで */
.video-background-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  z-index: 0;
  overflow: hidden;
  transition: opacity 0.5s ease;
}

.hero-video-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.85);
  z-index: 1;
}

/* ヒーローセクション */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 900px;
  position: relative;
}

/* サウンド選択オーバーレイ */
.sound-selection-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: #000000;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 1.5s ease;
  overflow: hidden;
}

/* 回転する光のアニメーション */
.sound-selection-overlay::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(
    from 0deg,
    transparent 0%,
    rgba(250, 245, 220, 0.15) 10%,
    rgba(250, 245, 220, 0.25) 15%,
    transparent 20%,
    transparent 40%,
    rgba(250, 245, 220, 0.1) 50%,
    rgba(250, 245, 220, 0.2) 55%,
    transparent 60%,
    transparent 100%
  );
  animation: rotateLight 60s linear infinite;
  transform-origin: center;
  filter: blur(60px);
}

/* 2つ目の光レイヤー */
.sound-selection-overlay::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 150%;
  height: 150%;
  background: radial-gradient(
    ellipse at center,
    rgba(250, 245, 220, 0.12) 0%,
    rgba(250, 245, 220, 0.06) 30%,
    transparent 70%
  );
  animation: rotateLight 90s linear infinite reverse;
  transform-origin: center;
  filter: blur(40px);
}

@keyframes rotateLight {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

.sound-selection-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

/* サウンド選択中はスクロール無効 */
body.no-scroll {
  overflow: hidden;
  height: 100vh;
  height: 100dvh;
}

.sound-selection-content {
  text-align: center;
  color: var(--color-white);
  position: relative;
  z-index: 1;
}

.sound-selection-title {
  font-size: 1.1rem;
  font-weight: 300;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.05em;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.3s;
}

.sound-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  justify-content: center;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
}

.sound-option-btn {
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-white);
  background: transparent;
  color: var(--color-white);
  font-size: var(--font-xs);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-width: 140px;
  width: 100%;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards;
}

.sound-option-btn:nth-child(1) {
  animation-delay: 0.8s;
}

.sound-option-btn:nth-child(2) {
  animation-delay: 1s;
}

.sound-option-btn:hover {
  background: var(--color-white);
  color: var(--color-black);
  transform: translateY(-3px);
}

.sound-option-btn:hover svg {
  fill: var(--color-black);
}

.sound-option-btn:focus {
  outline: 2px solid var(--color-white);
  outline-offset: 4px;
}

.sound-option-btn svg {
  width: 20px;
  height: 20px;
  fill: var(--color-white);
  transition: fill 0.3s ease;
}

/* タブレット・デスクトップ：ボタンを横並びに */
@media (min-width: 768px) {
  .sound-selection-title {
    font-size: 1.75rem;
  }

  .sound-options {
    flex-direction: row;
    max-width: none;
    gap: var(--space-xl);
  }

  .sound-option-btn {
    width: auto;
    min-width: 200px;
    padding: var(--space-lg) var(--space-xl);
    font-size: var(--font-base);
  }
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* サウンドコントロールボタン - オーディオレベルメーター風 */
.sound-control-btn {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.15);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  opacity: 0;
  pointer-events: none;
  padding: 0;
}

@media (min-width: 481px) {
  .sound-control-btn {
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 70px;
    height: 70px;
  }
}

.sound-control-btn.visible {
  opacity: 1;
  pointer-events: all;
}

.sound-control-btn:hover {
  background: var(--color-dark-gray);
  border-color: var(--color-dark-gray);
  transform: scale(1.05);
}

.sound-control-btn:hover .audio-bar {
  background: var(--color-white);
}

/* オーディオバー */
.audio-bars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  height: 20px;
}

@media (min-width: 481px) {
  .audio-bars {
    height: 24px;
  }
}

.audio-bar {
  width: 2px;
  background: var(--color-dark-gray);
  border-radius: 2px;
  transition: all 0.3s ease;
}

@media (min-width: 481px) {
  .audio-bar {
    width: 3px;
  }
}

.audio-bar:nth-child(1) {
  height: 6px;
}

@media (min-width: 481px) {
  .audio-bar:nth-child(1) {
    height: 8px;
  }
}

.audio-bar:nth-child(2) {
  height: 12px;
}

@media (min-width: 481px) {
  .audio-bar:nth-child(2) {
    height: 16px;
  }
}

.audio-bar:nth-child(3) {
  height: 20px;
}

@media (min-width: 481px) {
  .audio-bar:nth-child(3) {
    height: 24px;
  }
}

.audio-bar:nth-child(4) {
  height: 12px;
}

@media (min-width: 481px) {
  .audio-bar:nth-child(4) {
    height: 16px;
  }
}

.audio-bar:nth-child(5) {
  height: 6px;
}

@media (min-width: 481px) {
  .audio-bar:nth-child(5) {
    height: 8px;
  }
}

/* 再生中のアニメーション */
.sound-control-btn.playing .audio-bar {
  animation: audioWave 0.8s ease-in-out infinite;
}

.sound-control-btn.playing .audio-bar:nth-child(1) {
  animation-delay: 0s;
}

.sound-control-btn.playing .audio-bar:nth-child(2) {
  animation-delay: 0.1s;
}

.sound-control-btn.playing .audio-bar:nth-child(3) {
  animation-delay: 0.2s;
}

.sound-control-btn.playing .audio-bar:nth-child(4) {
  animation-delay: 0.3s;
}

.sound-control-btn.playing .audio-bar:nth-child(5) {
  animation-delay: 0.4s;
}

@keyframes audioWave {
  0%,
  100% {
    transform: scaleY(1);
  }
  50% {
    transform: scaleY(0.4);
  }
}

/* ミュート時のスタイル */
.sound-control-btn.muted .audio-bar {
  height: 2px !important;
  animation: none;
}

.hero-title {
  font-size: var(--font-lg);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

@media (min-width: 481px) {
  .hero-title {
    font-size: var(--font-xl);
  }
}

@media (min-width: 951px) {
  .hero-title {
    font-size: var(--font-3xl);
  }
}

.hero-title strong {
  font-weight: 700;
}

.hero-subtitle {
  font-size: var(--font-lg);
  color: var(--color-medium-gray);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.hero-cta {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: var(--color-dark-gray);
  color: var(--color-white);
  text-decoration: none;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.3s ease;
}

@media (min-width: 481px) {
  .hero-cta {
    padding: 1rem 3rem;
    font-size: var(--font-xs);
  }
}

.hero-cta:hover {
  background: var(--color-black);
  transform: translateY(-2px);
}

/* セクションヘッダー */
.section-header {
  margin-bottom: var(--space-2xl);
}

.section-label {
  font-size: var(--font-xs);
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: var(--font-lg);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: var(--space-lg);
}

@media (min-width: 951px) {
  .section-title {
    font-size: var(--font-xl);
  }
}

.section-description {
  font-size: var(--font-base);
  color: var(--color-medium-gray);
  line-height: 1.8;
  max-width: 700px;
}

/* プロフィールセクション - 背景透過 */
.profile-section {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 951px) {
  .profile-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

.profile-image {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.profile-content {
  background: #f9f9f9;
  backdrop-filter: blur(20px);
  padding: var(--space-2xl);
  border-radius: 4px;
}

.profile-content hgroup {
  position: relative;
  padding-bottom: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.profile-content hgroup::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  content: "";
  background-color: rgba(0, 0, 0, 0.1);
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  transform: scaleX(0);
  transform-origin: left;
}

.profile-content-wrapper.visible .profile-content hgroup::after {
  transform: scaleX(1);
  transition-delay: 0.8s;
}

.profile-content hgroup span {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.profile-content h3 {
  font-size: var(--font-lg);
  font-weight: 600;
  margin: 0;
}

.profile-content p {
  color: var(--color-medium-gray);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.profile-content p:last-of-type {
  margin-bottom: 0;
}

/* 動画背景を非表示にする境界 */
.video-background-end {
  position: relative;
  z-index: 2;
  background: var(--color-white);
}

/* 横スクロールセクション - スクロール変換型 + パララックス背景 */
.horizontal-scroll-section {
  position: relative;
  background: var(--color-white);
}

/* セクション全体の背景画像（パララックス効果用） */
.horizontal-scroll-bg {
  position: absolute;
  top: -80px;
  left: -80px;
  width: calc(100% + 160px);
  height: calc(100% + 160px);
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.horizontal-scroll-bg img {
  position: absolute;
  top: 0;
  left: 0;
  width: calc(140% + 160px);
  height: calc(100% + 160px);
  object-fit: cover;
  object-position: center 30%;
  will-change: transform, filter;
  filter: blur(5px);
  transition: opacity 0.5s ease;
}

/* 今後の出演予定セクションの背景：透明にしてクロスフェードを可能にする */
#upcoming {
  background: transparent !important;
}

/* 今後の出演予定セクションの背景画像：初期状態で非表示 */
#upcoming .horizontal-scroll-bg {
  opacity: 0;
  transition: opacity 0.3s ease;
}

#upcoming .horizontal-scroll-bg img {
  opacity: 1;
}

.horizontal-scroll-container {
  position: sticky;
  top: 80px;
  height: calc(100vh - 80px);
  height: calc(100dvh - 80px);
  overflow: hidden;
  z-index: 10;
}

/* 横スクロールセクションのヘッダー共通スタイル */
.horizontal-section-header,
.links-section-header,
.gallery-section-header {
  position: absolute;
  top: var(--space-lg);
  left: var(--space-lg);
  z-index: 30;
  max-width: 280px;
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: 4px;
  color: var(--color-black);
}

@media (min-width: 951px) {
  .horizontal-section-header,
  .links-section-header,
  .gallery-section-header {
    top: var(--space-2xl);
    left: var(--space-xl);
    max-width: 400px;
  }
}

.horizontal-section-header .section-label,
.links-section-header .section-label,
.gallery-section-header .section-label {
  color: var(--color-accent);
  font-size: var(--font-xs);
}

.horizontal-section-header .section-title,
.links-section-header .section-title,
.gallery-section-header .section-title {
  color: var(--color-black);
  font-size: var(--font-lg);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}

@media (min-width: 951px) {
  .horizontal-section-header .section-title,
  .links-section-header .section-title,
  .gallery-section-header .section-title {
    font-size: var(--font-xl);
  }
}

.horizontal-section-header .section-description,
.links-section-header .section-description,
.gallery-section-header .section-description {
  color: var(--color-medium-gray);
  font-size: var(--font-xs);
  line-height: 1.6;
}

.horizontal-section-content {
  height: 100%;
  display: flex;
  align-items: center;
  will-change: transform;
  transition: transform 0.1s ease-out;
  position: relative;
  z-index: 20;
}

.horizontal-scroll-wrapper {
  display: flex;
  gap: var(--space-2xl);
  padding: 0 20vw 0 var(--space-lg);
  position: relative;
  z-index: 20;
}

@media (min-width: 951px) {
  .horizontal-scroll-wrapper {
    padding: 0 50vw 0 calc(100vw - 450px - var(--space-xl));
  }
}

/* 今後の予定セクション - 統一されたカードサイズ */
.event-card {
  min-width: 300px;
  max-width: 300px;
  padding: var(--space-lg);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 4px;
  transition: all 0.3s ease;
  flex-shrink: 0;
  scroll-snap-align: center;
  background: var(--color-white);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 25;
}

@media (min-width: 951px) {
  .event-card {
    min-width: 450px;
    max-width: 450px;
    padding: var(--space-2xl);
  }
}

.event-card:hover {
  border-color: var(--color-black);
  transform: scale(1.02);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.event-date {
  font-size: var(--font-xs);
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.event-title {
  font-size: var(--font-base);
  font-weight: 600;
  margin-bottom: var(--space-md);
  line-height: 1.4;
  color: var(--color-black);
}

@media (min-width: 951px) {
  .event-title {
    font-size: var(--font-lg);
  }
}

.event-venue {
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
  margin-bottom: var(--space-sm);
}

.event-description {
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
  line-height: 1.6;
}

/* リンクセクション - 縦→横スクロール変換 */
.links-horizontal-section {
  position: relative;
  z-index: 1;
  background: transparent;
}

.links-horizontal-container {
  position: sticky;
  top: 80px;
  height: calc(100vh - 80px);
  height: calc(100dvh - 80px);
  overflow: hidden;
  z-index: 1;
}

.links-section-header .scroll-indicator {
  color: var(--color-medium-gray);
}

.links-horizontal-content {
  height: 100%;
  display: flex;
  align-items: center;
  will-change: transform;
  transition: transform 0.1s ease-out;
}

.links-scroll {
  display: flex;
  gap: var(--space-2xl);
  padding: 0 20vw 0 var(--space-lg);
}

@media (min-width: 951px) {
  .links-scroll {
    padding: 0 50vw 0 calc(100vw - 350px - var(--space-xl));
  }
}

.link-card {
  min-width: 280px;
  max-width: 280px;
  padding: var(--space-lg);
  text-align: center;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 4px;
  transition: all 0.3s ease;
  text-decoration: none;
  color: var(--color-black);
  display: block;
  flex-shrink: 0;
  scroll-snap-align: center;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
}

@media (min-width: 951px) {
  .link-card {
    min-width: 350px;
    max-width: 350px;
    padding: var(--space-xl);
  }
}

.link-card:hover {
  border-color: var(--color-black);
  transform: scale(1.02);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.link-description {
  color: var(--color-medium-gray);
}

/* ギャラリーセクション - 自動再生横スクロール */
.gallery-section {
  height: 100vh;
  height: 100dvh;
  position: relative;
  overflow: hidden;
  background: var(--color-light-gray);
  z-index: 50;
}

.gallery-autoplay-container {
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.gallery-autoplay-scroll {
  display: flex;
  gap: var(--space-xl);
  animation: auto-scroll 40s linear infinite;
  will-change: transform;
}

@keyframes auto-scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.gallery-item {
  min-width: 350px;
  max-width: 350px;
  height: 450px;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}

@media (min-width: 951px) {
  .gallery-item {
    min-width: 500px;
    max-width: 500px;
    height: 600px;
  }
}

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

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: var(--color-white);
  font-size: var(--font-xs);
  letter-spacing: 0.05em;
}

.link-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
  display: block;
}

.link-title {
  font-size: var(--font-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.link-description {
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
}

/* コンタクトセクション */
.contact {
  position: relative;
  z-index: 1;
  background: transparent;
  text-align: center;
}

.contact .section-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  padding: var(--space-xl);
  border-radius: 4px;
  display: inline-block;
  margin-bottom: var(--space-2xl);
}

.contact .section-label {
  color: var(--color-accent);
}

.contact .section-title {
  color: var(--color-black);
}

.contact .section-description {
  color: var(--color-medium-gray);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  padding: var(--space-2xl);
  border-radius: 4px;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-xs);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-black);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  font-size: var(--font-base);
  font-family: inherit;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  color: var(--color-black);
  transition: border-color 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-medium-gray);
}

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

.form-group select option {
  background: var(--color-white);
  color: var(--color-black);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.submit-btn {
  width: 100%;
  padding: var(--space-lg);
  background: var(--color-dark-gray);
  color: var(--color-white);
  border: none;
  border-radius: 9999px;
  font-size: var(--font-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit-btn:hover {
  background: var(--color-black);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* フッター */
.footer {
  position: relative;
  z-index: 2;
  padding: var(--space-lg) var(--space-md);
  background: var(--color-dark-gray);
  color: var(--color-white);
  text-align: center;
}

@media (min-width: 481px) {
  .footer {
    padding: var(--space-xl) var(--space-lg);
  }
}

@media (min-width: 951px) {
  .footer {
    padding: var(--space-2xl) var(--space-xl);
  }
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  list-style: none;
}

.footer-links a {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  color: var(--color-white);
  text-decoration: none;
  font-size: 1rem; /* 16px */
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.footer-links a:hover {
  opacity: 1;
}

.copyright {
  font-size: var(--font-xs);
  opacity: 0.6;
}

/* モバイルメニュー */
.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-black);
}

@media (min-width: 951px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* スクロールインジケーター */
.scroll-indicator {
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
  margin-top: var(--space-md);
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.scroll-arrow {
  font-size: 1.2rem;
  animation: scroll-hint 2s ease-in-out infinite;
}

@keyframes scroll-hint {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(8px);
  }
}

/* レスポンシブ - 中間サイズ調整（アクセシビリティ維持） */

/* レスポンシブ - モバイルメニュー */


/* シンプルなフェードインアニメーション */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* セクションヘッダーのアニメーション */
.section-header.fade-in .section-label,
.section-header.fade-in .section-title {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.section-header.fade-in.visible .section-label {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0s;
}

.section-header.fade-in.visible .section-title {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.15s;
}

/* プロフィールセクションのアニメーション - クリップパスで左から右に表示 */
.profile-image-wrapper {
  position: relative;
}

.profile-image-wrapper .profile-image {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.profile-image-wrapper.visible .profile-image {
  clip-path: inset(0 0% 0 0);
}

.profile-content-wrapper {
  position: relative;
}

.profile-content-wrapper .profile-content {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.4s cubic-bezier(0.22, 1, 0.36, 1) 0.2s;
}

.profile-content-wrapper.visible .profile-content {
  clip-path: inset(0 0% 0 0);
}

/* 文字ブロック内の各要素のアニメーション - 下から上に */
.profile-content hgroup span,
.profile-content h3,
.profile-content p {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.profile-content-wrapper.visible .profile-content hgroup span {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.6s;
}

.profile-content-wrapper.visible .profile-content h3 {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.7s;
}

.profile-content-wrapper.visible .profile-content p:nth-of-type(1) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 1.2s;
}

.profile-content-wrapper.visible .profile-content p:nth-of-type(2) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 1.3s;
}

.profile-content-wrapper.visible .profile-content p:nth-of-type(3) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 1.4s;
}

/* ========================================
   ページ切り替えトランジション
   ======================================== */

.main-content {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
}

.page-section {
  opacity: 1;
  transition: opacity 0.4s ease;
}

.page-section.is-hidden {
  display: none;
  opacity: 0;
}

.page-section.is-fading-out {
  opacity: 0;
}

/* ========================================
   Shop専用スタイル
   ======================================== */

/* CD商品グリッド */
.cd-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .cd-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .cd-grid {
    gap: var(--space-xl);
  }
}

/* CD商品カード */
.cd-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.cd-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  border-color: var(--color-black);
}

.cd-card__cover {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  position: relative;
  background: var(--color-light-gray);
}

.cd-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.cd-card:hover .cd-card__cover img {
  transform: scale(1.05);
}

.cd-card__badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: #ff4757;
  color: white;
  padding: var(--space-xs) var(--space-md);
  border-radius: 15px;
  font-size: var(--font-xs);
  font-weight: 600;
  z-index: 2;
}

.cd-card__content {
  padding: var(--space-xl);
}

.cd-card__title {
  font-size: var(--font-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-black);
  line-height: 1.4;
}

.cd-card__artist {
  color: var(--color-medium-gray);
  font-size: var(--font-base);
  margin-bottom: var(--space-md);
}

.cd-card__description {
  color: var(--color-medium-gray);
  font-size: var(--font-xs);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

/* オーディオプレイヤー */
.audio-player {
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: 4px;
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
}

.audio-player__title {
  font-size: var(--font-base);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
  text-align: center;
}

.audio-player__tracks {
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: var(--space-md);
}

.audio-player__tracks::-webkit-scrollbar {
  width: 4px;
}

.audio-player__tracks::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 2px;
}

.audio-player__tracks::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 2px;
}

.track-item {
  display: flex;
  align-items: center;
  padding: var(--space-sm);
  margin-bottom: var(--space-xs);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 4px;
  transition: all 0.3s ease;
  cursor: pointer;
  min-height: 44px;
}

.track-item:hover {
  background: rgba(212, 175, 55, 0.1);
}

.track-item.is-playing {
  background: rgba(212, 175, 55, 0.2);
  border: 1px solid var(--color-accent);
}

.track-item__number {
  width: 30px;
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
}

.track-item__name {
  flex: 1;
  font-size: var(--font-xs);
  color: var(--color-black);
}

.track-item__duration {
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
}

.play-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  background: var(--color-accent);
  color: var(--color-black);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-xs);
  margin-right: var(--space-sm);
}

.play-btn:hover {
  transform: scale(1.1);
}

/* 現在再生中プレイヤー */
.audio-player__current {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.5);
  border-radius: 4px;
  margin-top: var(--space-md);
}

.current-track {
  text-align: center;
  flex: 1;
}

.current-track__title {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--color-black);
}

.current-track__artist {
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
}

.audio-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.control-btn {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.8);
  color: var(--color-black);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-xs);
}

.control-btn:hover {
  background: var(--color-accent);
  color: var(--color-black);
}

/* プログレスバー */
.progress {
  width: 100%;
  flex: 1;
  margin: var(--space-md) 0;
}

.progress__bar {
  width: 100%;
  height: 4px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.progress__bar::before {
  content: "";
  position: absolute;
  top: -20px;
  left: 0;
  right: 0;
  bottom: -20px;
  z-index: 1;
}

.progress__fill {
  height: 100%;
  background: var(--color-accent);
  width: 0%;
  transition: width 0.1s ease;
  border-radius: 2px;
  position: relative;
  z-index: 2;
}

.progress__time {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-xs);
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
}

/* 価格・購入オプション */
.cd-card__price-info {
  margin: var(--space-lg) 0;
}

.cd-card__price {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.price__current {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--color-accent);
}

.price__note {
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
}

.purchase-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  background: rgba(212, 175, 55, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 4px;
  padding: var(--space-md);
  margin-top: var(--space-md);
}

.btn-purchase {
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  position: relative;
  overflow: hidden;
  min-height: 44px;
  font-size: var(--font-base);
}

.btn-purchase::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s;
}

.btn-purchase:hover::before {
  left: 100%;
}

.btn-purchase--cd {
  background: var(--color-accent);
  color: var(--color-black);
}

.btn-purchase--cd:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(212, 175, 55, 0.4);
}

.btn-purchase--kazze {
  background: linear-gradient(135deg, #ff6b6b, #ffa500, #ff1493);
  color: white;
}

.btn-purchase--kazze:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.btn-purchase--digital {
  background: rgba(0, 0, 0, 0.05);
  border: 2px solid rgba(0, 0, 0, 0.1);
  color: var(--color-medium-gray);
  opacity: 0.6;
  cursor: not-allowed;
}

.purchase-options__notice {
  text-align: center;
  margin-top: var(--space-md);
  font-size: var(--font-xs);
  color: var(--color-medium-gray);
}

.purchase-options__notice p {
  margin-bottom: var(--space-xs);
}