/* ============================================================
   DANCER PORTFOLIO - STYLESHEET
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600;700;900&family=Noto+Sans+JP:wght@300;400;700&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  --color-bg:         #0a0a0a;
  --color-bg-alt:     #111111;
  --color-bg-card:    #1a1a1a;
  --color-gold:       #c9a84c;
  --color-gold-light: #e8c97a;
  --color-white:      #ffffff;
  --color-gray:       #888888;
  --color-gray-light: #cccccc;
  --color-border:     #2a2a2a;
  --font-en:  'Montserrat', sans-serif;
  --font-ja:  'Noto Sans JP', sans-serif;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--color-bg);
  color: var(--color-white);
  font-family: var(--font-ja);
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-gold); border-radius: 2px; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  padding: 20px 40px;
  display: flex; align-items: center; justify-content: space-between;
  transition: background var(--transition), padding var(--transition);
}
.nav.scrolled {
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(12px);
  padding: 14px 40px;
  border-bottom: 1px solid var(--color-border);
}
.nav__logo {
  font-family: var(--font-en);
  font-weight: 900; font-size: 1.4rem; letter-spacing: 2px;
  color: var(--color-gold);
}
.nav__links { display: flex; gap: 36px; }
.nav__links a {
  font-family: var(--font-en);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase; color: var(--color-gray-light);
  transition: color var(--transition); position: relative;
}
.nav__links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1px; background: var(--color-gold);
  transition: width var(--transition);
}
.nav__links a:hover { color: var(--color-gold); }
.nav__links a:hover::after { width: 100%; }
.nav__hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px; background: none; border: none;
}
.nav__hamburger span { display: block; width: 26px; height: 2px; background: var(--color-white); transition: var(--transition); }
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav__mobile {
  display: none; position: fixed; inset: 0;
  background: rgba(10,10,10,0.98); z-index: 99;
  flex-direction: column; align-items: center; justify-content: center; gap: 40px;
}
.nav__mobile.open { display: flex; }
.nav__mobile a {
  font-family: var(--font-en); font-size: 1.5rem; font-weight: 700;
  letter-spacing: 6px; text-transform: uppercase;
  color: var(--color-gray-light); transition: color var(--transition);
}
.nav__mobile a:hover { color: var(--color-gold); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center top; background-repeat: no-repeat;
  transform: scale(1.05); transition: transform 8s ease-out;
}
.hero__bg.loaded { transform: scale(1); }
.hero__bg-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero__overlay {
  position: absolute; inset: 0;
  /* 写真が見えるよう中央を薄く、上下で暗くする */
  background:
    linear-gradient(
      to bottom,
      rgba(0,0,0,0.55) 0%,
      rgba(0,0,0,0.1)  30%,
      rgba(0,0,0,0.05) 55%,
      rgba(0,0,0,0.65) 85%,
      rgba(0,0,0,0.92) 100%
    );
}
.hero__content {
  position: relative; text-align: center; z-index: 2;
  /* 少し下寄りに配置して写真の顔と被りにくくする */
  margin-top: 8vh;
}
.hero__tagline {
  font-family: var(--font-en); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 10px; text-transform: uppercase; color: var(--color-gold);
  margin-bottom: 18px;
  text-shadow: 0 1px 12px rgba(0,0,0,0.8);
  opacity: 0; animation: fadeInUp 0.8s 0.3s forwards;
}
/* ★ TOPの名前 — lowercase のまま表示 */
.hero__name {
  font-family: var(--font-en);
  font-weight: 900;
  font-size: clamp(4.5rem, 13vw, 11rem);
  letter-spacing: -3px;
  line-height: 0.88;
  color: #ffffff;
  /* 名前を際立たせるテキストシャドウ */
  text-shadow:
    0 2px 40px rgba(0,0,0,0.7),
    0 0 80px rgba(201,168,76,0.15);
  opacity: 0; animation: fadeInUp 0.8s 0.6s forwards;
}
.hero__scroll {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  opacity: 0; animation: fadeIn 1s 1.5s forwards;
}
.hero__scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  animation: scrollLine 1.5s infinite;
}
.hero__scroll-text { font-family: var(--font-en); font-size: 0.6rem; letter-spacing: 4px; color: var(--color-gray); }
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 70px; }
.section-label {
  font-family: var(--font-en); font-size: 0.7rem; font-weight: 600;
  letter-spacing: 6px; text-transform: uppercase; color: var(--color-gold); margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-en); font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -1px; text-transform: uppercase; line-height: 1;
}
.section-divider { width: 50px; height: 2px; background: var(--color-gold); margin: 24px auto 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }

/* ============================================================
   2. PROFILE (About)
   ============================================================ */
.about { background: var(--color-bg-alt); }
.about__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about__photo-wrap { position: relative; }
.about__photo-wrap::before {
  content: ''; position: absolute;
  top: -15px; left: -15px; right: 15px; bottom: 15px;
  border: 1px solid var(--color-gold); opacity: 0.3;
}
.about__photo { width: 100%; aspect-ratio: 3/4; object-fit: cover; object-position: top; }
.about__photo-placeholder {
  width: 100%; aspect-ratio: 3/4; background: var(--color-bg-card);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: var(--color-gray);
}
.about__photo-placeholder svg { width: 60px; height: 60px; opacity: 0.4; }
.about__text-name { font-family: var(--font-en); font-weight: 900; font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -1px; line-height: 1; margin-bottom: 6px; }
.about__text-name-ja { font-size: 1rem; color: var(--color-gray); letter-spacing: 4px; margin-bottom: 8px; }
.about__text-role { font-family: var(--font-en); font-size: 0.75rem; letter-spacing: 6px; color: var(--color-gold); text-transform: uppercase; margin-bottom: 36px; }
.about__text-bio { color: var(--color-gray-light); font-size: 0.95rem; line-height: 2; margin-bottom: 36px; }
.about__bio-specs { display: block; margin-bottom: 1.5em; }
.about__bio-text  { display: block; }


/* ============================================================
   3. WORKS（アコーディオン・カテゴリ別）
   ============================================================ */
.works { background: var(--color-bg); }

.works__list { display: flex; flex-direction: column; gap: 3px; }

.work-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--transition);
}
.work-item:hover { border-color: rgba(201,168,76,0.4); }
.work-item.open { border-color: rgba(201,168,76,0.6); }

/* ヘッダー：カテゴリ名 + 矢印 — 全体がクリック領域 */
.work-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 32px;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
}
.work-item__header:hover { background: rgba(255,255,255,0.025); }

.work-item__category {
  font-family: var(--font-en);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-white);
  transition: color var(--transition);
}
.work-item.open .work-item__category { color: var(--color-gold); }

.work-item__chevron {
  width: 20px; height: 20px; fill: none;
  stroke: var(--color-gray); stroke-width: 2;
  transition: transform var(--transition), stroke var(--transition);
  flex-shrink: 0;
}
.work-item.open .work-item__chevron { transform: rotate(180deg); stroke: var(--color-gold); }

/* 展開パネル */
.work-item__detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.work-item.open .work-item__detail { max-height: 600px; }

.work-item__detail-inner {
  padding: 4px 32px 28px 32px;
  border-top: 1px solid var(--color-border);
}

/* 箇条書きリスト */
.work-item__list {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.work-item__list li {
  color: var(--color-gray-light);
  font-size: 0.92rem;
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}
.work-item__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 1px;
  background: var(--color-gold);
}

/* ============================================================
   4. GALLERY
   ============================================================ */
.gallery { background: var(--color-bg-alt); }

/* タブボタン */
.gallery__tabs {
  display: flex; gap: 4px; margin-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
}
.gallery__tab {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 28px;
  background: none; border: none;
  font-family: var(--font-en); font-size: 0.72rem; font-weight: 600; letter-spacing: 3px; text-transform: uppercase;
  color: var(--color-gray); cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition), border-color var(--transition);
}
.gallery__tab svg { width: 14px; height: 14px; }
.gallery__tab:hover { color: var(--color-gray-light); }
.gallery__tab.active { color: var(--color-gold); border-bottom-color: var(--color-gold); }

/* タブペイン */
.gallery__pane { display: none; }
.gallery__pane.active { display: block; }

/* --- 1. YouTube Links グリッド --- */
.gallery__yt-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.yt-link-card {
  position: relative; overflow: hidden; display: block;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), transform var(--transition);
  text-decoration: none;
}
.yt-link-card:hover { border-color: var(--color-gold); transform: translateY(-3px); }
.yt-link-card__thumb {
  position: relative; padding-bottom: 56.25%; background: var(--color-bg-card);
}
.yt-link-card__thumb img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
/* YT play icon overlay */
.yt-link-card__play {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.4);
  transition: background var(--transition);
}
.yt-link-card__play svg {
  width: 56px; height: 56px;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.7));
  transition: transform var(--transition);
}
.yt-link-card:hover .yt-link-card__play { background: rgba(0,0,0,0.2); }
.yt-link-card:hover .yt-link-card__play svg { transform: scale(1.1); }
.yt-link-card__title {
  padding: 12px 16px;
  font-family: var(--font-en); font-size: 0.8rem; letter-spacing: 1px;
  color: var(--color-gray-light);
}
.yt-link-card__label {
  font-size: 0.65rem; letter-spacing: 2px; color: var(--color-gold);
  text-transform: uppercase;
  display: flex; align-items: center; gap: 4px;
  padding: 0 16px 12px;
}
.yt-link-card__label::before { content: '→'; }

/* --- 2. 埋め込み動画グリッド --- */
.gallery__videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.gallery-video-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.gallery-video-card:hover { border-color: rgba(201,168,76,0.5); transform: translateY(-3px); }

/* クリック前はサムネイル表示、クリック後にiframe表示 */
.gallery-video-card__thumb {
  position: relative; padding-bottom: 56.25%; cursor: pointer; overflow: hidden;
}
.gallery-video-card__thumb img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery-video-card:hover .gallery-video-card__thumb img { transform: scale(1.03); }
.gallery-video-card__thumb-play {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.35);
  transition: background var(--transition);
}
.gallery-video-card__thumb-play svg { width: 64px; height: 64px; filter: drop-shadow(0 2px 12px rgba(0,0,0,0.8)); }
.gallery-video-card:hover .gallery-video-card__thumb-play { background: rgba(0,0,0,0.15); }

.gallery-video-card__iframe-wrap {
  display: none; position: relative; padding-bottom: 56.25%;
}
.gallery-video-card.playing .gallery-video-card__thumb { display: none; }
.gallery-video-card.playing .gallery-video-card__iframe-wrap { display: block; }
.gallery-video-card__iframe-wrap iframe {
  position: absolute; inset: 0; width: 100%; height: 100%; border: none;
}

.gallery-video-card__title {
  padding: 14px 18px;
  font-family: var(--font-en); font-size: 0.8rem; letter-spacing: 2px;
  color: var(--color-gray-light);
}

/* --- 3. 写真グリッド --- */
.gallery__photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}
.gallery__photo-item {
  position: relative; overflow: hidden; cursor: pointer; aspect-ratio: 1;
}
.gallery__photo-item:nth-child(1) { grid-column: span 2; grid-row: span 2; aspect-ratio: auto; }
.gallery__photo-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1); }
.gallery__photo-item-overlay {
  position: absolute; inset: 0; background: rgba(10,10,10,0.7);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--transition);
}
.gallery__photo-item-overlay svg { width: 36px; height: 36px; fill: none; stroke: white; stroke-width: 2; }
.gallery__photo-item:hover img { transform: scale(1.06); }
.gallery__photo-item:hover .gallery__photo-item-overlay { opacity: 1; }
.gallery__photo-placeholder {
  background: var(--color-bg-card);
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%; min-height: 200px;
  color: var(--color-gray); font-size: 0.8rem; letter-spacing: 2px;
}

/* --- ローカル動画（HTML5 video） --- */
.gallery-local-video-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.gallery-local-video-card:hover { border-color: rgba(201,168,76,0.5); transform: translateY(-3px); }

.gallery-local-video-card video {
  width: 100%;
  display: block;
  background: #000;
  max-height: 360px;
  object-fit: contain;
}
.gallery-local-video-card__title {
  padding: 14px 18px;
  font-family: var(--font-en); font-size: 0.8rem; letter-spacing: 2px;
  color: var(--color-gray-light);
}

/* Lightbox */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.95); align-items: center; justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox__img { max-width: 90vw; max-height: 90vh; object-fit: contain; }
.lightbox__close {
  position: absolute; top: 20px; right: 24px;
  font-size: 2rem; color: var(--color-white); cursor: pointer;
  background: none; border: none; line-height: 1; transition: color var(--transition);
}
.lightbox__close:hover { color: var(--color-gold); }
.lightbox__prev, .lightbox__next {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: none; border: 1px solid var(--color-border);
  color: var(--color-white); padding: 16px 20px;
  cursor: pointer; font-size: 1.2rem; transition: all var(--transition);
}
.lightbox__prev { left: 20px; }
.lightbox__next { right: 20px; }
.lightbox__prev:hover, .lightbox__next:hover { border-color: var(--color-gold); color: var(--color-gold); }

/* ============================================================
   5. CONTACT
   ============================================================ */
.contact { background: var(--color-bg); }
.contact__inner { max-width: 600px; margin: 0 auto; text-align: center; }
.contact__text { color: var(--color-gray-light); font-size: 0.95rem; line-height: 2; margin-bottom: 50px; }
.contact__email-link {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  width: fit-content; margin: 0 auto 50px;
  padding: 18px 44px; border: 1px solid var(--color-gold);
  font-family: var(--font-en); font-size: 0.8rem; letter-spacing: 4px; text-transform: uppercase;
  color: var(--color-gold); transition: all var(--transition);
}
.contact__email-link:hover { background: var(--color-gold); color: var(--color-bg); }
.contact__social-links { display: flex; justify-content: center; gap: 20px; }
.contact__social-link {
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border: 1px solid var(--color-border);
  transition: all var(--transition); color: var(--color-gray-light);
}
.contact__social-link:hover { border-color: var(--color-gold); color: var(--color-gold); }
.contact__social-link svg { width: 20px; height: 20px; fill: currentColor; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #060606; padding: 30px 40px;
  display: flex; align-items: center; justify-content: space-between;
  border-top: 1px solid var(--color-border);
}
.footer__logo { font-family: var(--font-en); font-weight: 900; font-size: 1.1rem; letter-spacing: 2px; color: var(--color-gold); }
.footer__copy { font-size: 0.75rem; color: var(--color-gray); letter-spacing: 1px; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .container { padding: 0 24px; }
  .about__inner { grid-template-columns: 1fr; gap: 48px; }
  .gallery__photo-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery__photo-item:nth-child(1) { grid-column: span 2; grid-row: span 1; aspect-ratio: 16/9; }
  .gallery__videos-grid { grid-template-columns: 1fr; }
  .footer { flex-direction: column; gap: 12px; text-align: center; }

  .work-item__header { padding: 18px 20px; }
  .work-item__detail-inner { padding: 4px 20px 24px; }
}

@media (max-width: 600px) {
  section { padding: 70px 0; }
  .nav { padding: 16px 24px; }
  .nav.scrolled { padding: 12px 24px; }
  .gallery__photo-grid { grid-template-columns: 1fr; }
  .gallery__photo-item:nth-child(1) { grid-column: span 1; aspect-ratio: 4/3; }
  .gallery__tabs { overflow-x: auto; }
  .gallery__tab { padding: 12px 16px; white-space: nowrap; }
  .gallery__yt-links { grid-template-columns: 1fr; }
  .lightbox__prev { left: 8px; }
  .lightbox__next { right: 8px; }
  .contact__email-link { padding: 16px 24px; font-size: 0.72rem; letter-spacing: 2px; }
}