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

body {
  background-color: #0b0b0b;
  color: #d8d8d8;
  font-family: 'Cormorant Garamond', 'Noto Serif JP', 'YuMincho', serif;
  overflow-x: hidden;
  letter-spacing: 0.12em;
}

/* カスタムカーソル */
.custom-cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: transform 0.12s ease-out, opacity 0.2s;
  z-index: 9999;
}

/* ページ右端のバーティカルアクセント */
.side-accent {
  position: fixed;
  right: 25px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  pointer-events: none;
}

.side-accent span {
  writing-mode: vertical-rl;
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  color: rgba(255, 255, 255, 0.25);
  display: block;
}

/* ヘッダー & ロゴ */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 24px 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  background: linear-gradient(to bottom, rgba(11, 11, 11, 0.85), transparent);
}

.logo-link {
  display: inline-block;
  line-height: 0;
}

.site-logo {
  height: 38px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.1);
  transition: opacity 0.3s;
}

.site-logo:hover {
  opacity: 0.75;
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav a {
  color: #eee;
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  transition: color 0.3s;
}

.nav a:hover {
  color: #aaa;
}

/* ヒーローセクション（カクつきゼロ設計） */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: #0b0b0b;
}

.hero-slider {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 2.5s ease-in-out;
  pointer-events: none;
  z-index: 1;
}

.hero-slide.active {
  opacity: 1;
  z-index: 2;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.62);
  display: block;
  will-change: transform;
}

.hero-slide.zoom-1 img {
  animation: continuousZoom1 26s infinite alternate ease-in-out;
}

.hero-slide.zoom-2 img {
  animation: continuousZoom2 26s infinite alternate ease-in-out;
}

@keyframes continuousZoom1 {
  0% { transform: scale(1.0); }
  100% { transform: scale(1.12); }
}

@keyframes continuousZoom2 {
  0% { transform: scale(1.12); }
  100% { transform: scale(1.0); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 25%, rgba(11, 11, 11, 0.88) 100%);
  pointer-events: none;
  z-index: 3;
}

.hero-text {
  position: relative;
  text-align: center;
  z-index: 4;
}

.hero-text h1 {
  font-size: 4rem;
  font-weight: 300;
  letter-spacing: 0.35em;
  color: #f5f5f5;
  margin-left: 0.35em;
}

.hero-text .sub {
  font-size: 0.8rem;
  color: #888;
  letter-spacing: 0.45em;
  margin-bottom: 12px;
  margin-left: 0.45em;
}

@media (max-width: 640px) {
  .hero-text h1 {
    font-size: 2.6rem;
  }
}

/* ギャラリーセクション */
.gallery-section {
  padding: 120px 8vw 100px 6vw;
}

.gallery {
  column-count: 3;
  column-gap: 32px;
}

@media (max-width: 960px) {
  .gallery { column-count: 2; }
}

@media (max-width: 640px) {
  .gallery { column-count: 1; }
  .side-accent { display: none; }
  .header { padding: 20px 24px; }
}

.gallery-item {
  position: relative;
  display: block;
  margin-bottom: 32px;
  overflow: hidden;
  background: #141414;
}

.gallery-item img {
  width: 100%;
  display: block;
  filter: brightness(0.82) contrast(110%);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), filter 0.8s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
  filter: brightness(1.0) contrast(100%);
}

.gallery-item .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease;
}

.gallery-item:hover .overlay {
  opacity: 1;
}

.gallery-item .overlay span {
  border: 1px solid rgba(255, 255, 255, 0.8);
  padding: 9px 24px;
  font-size: 0.75rem;
  color: #fff;
  letter-spacing: 0.25em;
}

/* About & アーティストセクション */
.about-section {
  max-width: 860px;
  margin: 100px auto 140px;
  text-align: center;
  padding: 0 24px;
}

.about-section h2, .contact-section h2 {
  font-size: 1.8rem;
  letter-spacing: 0.3em;
  margin-bottom: 32px;
  font-weight: 300;
  color: #eee;
}

.en-quote {
  font-style: italic;
  font-size: 1.25rem;
  color: #aaa;
  margin-bottom: 24px;
}

.jp-text {
  font-size: 0.95rem;
  color: #777;
  line-height: 2.2;
}

/* アーティスト オンマウス展開ラッパー */
.artist-reveal-wrapper {
  position: relative;
  margin-top: 70px;
  background: rgba(18, 18, 18, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 45px 35px;
  cursor: pointer;
  transition: border-color 1.5s ease, background 1.5s ease;
}

.artist-reveal-wrapper:hover {
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(22, 22, 22, 0.95);
}

/* 通常時（文字のみ） */
.artist-summary {
  text-align: center;
  transition: opacity 1.2s ease;
}

.artist-summary .label {
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: #888;
  display: block;
  margin-bottom: 8px;
}

.artist-summary h3 {
  font-size: 2.2rem;
  letter-spacing: 0.3em;
  color: #fff;
  font-weight: 300;
  margin-bottom: 16px;
  margin-left: 0.3em;
}

.artist-summary .summary-lead {
  font-size: 0.95rem;
  color: #bbb;
  letter-spacing: 0.15em;
  line-height: 2;
  max-width: 650px;
  margin: 0 auto;
}

.hover-hint {
  display: inline-block;
  margin-top: 25px;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: #555;
  border-bottom: 1px dotted #444;
  padding-bottom: 3px;
}

/* ★★★ ① 外枠：4.0秒かけて優雅に浮かび上がる ★★★ */
.artist-full-bio {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.97);
  width: 95%;
  max-height: 90vh;
  overflow-y: auto;
  background: rgba(18, 18, 18, 0.98);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.95);
  padding: 35px;
  display: flex;
  align-items: center;
  gap: 32px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  
  /* 外枠は 4.0秒 で静かに登場 */
  transition: opacity 4.0s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 4.0s cubic-bezier(0.16, 1, 0.3, 1), 
              visibility 4.0s;
  z-index: 150;
  text-align: left;
  backdrop-filter: blur(12px);
}

.artist-reveal-wrapper:hover .artist-full-bio {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

/* ★★★ ② 写真：10.0秒かけてじっくり姿を現す ★★★ */
.bio-photo-box {
  flex-shrink: 0;
  width: 220px;
  height: 280px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.15);
  opacity: 0;
  transform: translateY(12px);
  /* 写真は 10.0秒（0.5秒遅れてゆったり始動） */
  transition: opacity 10.0s cubic-bezier(0.16, 1, 0.3, 1) 0.5s, 
              transform 10.0s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
}

.artist-reveal-wrapper:hover .bio-photo-box {
  opacity: 1;
  transform: translateY(0);
}

.bio-photo-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(0.95);
}

/* ★★★ ③ 中の文字：16.0秒かけて極上の静寂の中で満ちていく ★★★ */
.bio-text-content {
  flex: 1;
  opacity: 0;
  transform: translateY(12px);
  /* 文字は 16.0秒（1.0秒遅れてじっくり始動） */
  transition: opacity 16.0s cubic-bezier(0.16, 1, 0.3, 1) 1.0s, 
              transform 16.0s cubic-bezier(0.16, 1, 0.3, 1) 1.0s;
}

.artist-reveal-wrapper:hover .bio-text-content {
  opacity: 1;
  transform: translateY(0);
}

.bio-text-content h4 {
  font-size: 1.35rem;
  letter-spacing: 0.2em;
  color: #fff;
  margin-bottom: 14px;
  font-weight: 400;
}

.bio-text-content .bio-line {
  font-size: 0.78rem;
  line-height: 1.85;
  color: #aaa;
  margin-bottom: 8px;
  letter-spacing: 0.08em;
}

.bio-text-content .bio-line:last-child {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .artist-full-bio {
    flex-direction: column;
    padding: 24px;
    gap: 18px;
  }
  .bio-photo-box {
    width: 150px;
    height: 180px;
  }
}

/* Contact */
.contact-section {
  max-width: 600px;
  margin: 0 auto 120px;
  text-align: center;
  padding: 0 24px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact-form input, .contact-form textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid #2c2c2c;
  padding: 16px 6px;
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s;
}

.contact-form input:focus, .contact-form textarea:focus {
  border-bottom-color: #eee;
}

.contact-form button {
  margin-top: 24px;
  background: transparent;
  color: #eee;
  border: 1px solid #444;
  padding: 15px 44px;
  font-family: inherit;
  letter-spacing: 0.25em;
  cursor: pointer;
  align-self: center;
  transition: all 0.3s;
}

.contact-form button:hover {
  background: #eee;
  color: #0b0b0b;
  border-color: #eee;
}

.footer {
  text-align: center;
  padding: 40px;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: #444;
}