/* =============================================
   めいといくのアトリエ — グローバルスタイル
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Zen+Maru+Gothic:wght@400;500;700&family=Cormorant+Garamond:wght@300;400&family=Noto+Sans+JP:wght@300;400&display=swap');

/* ── カラー変数（ライトモード） ── */
:root {
  --bg:           #FFFDF8;
  --bg-card:      #FFFFFF;
  --bg-overlay:   rgba(40, 28, 20, 0.88);
  --text:         #3A2E28;
  --text-muted:   #9A8880;
  --text-light:   #C8B8B0;
  --mei:          #E8836D;   /* めい：あたたかいオレンジ */
  --iku:          #6DA8D8;   /* いく：やわらかいブルー */
  --gold:         #D4A84B;
  --border:       #F0E4D8;
  --shadow:       rgba(58, 46, 40, 0.08);
  --shadow-hover: rgba(58, 46, 40, 0.18);
  --placeholder:  #FEF6EE;
  --cream:        #FDF4EA;
}

/* ── ダークモード ── */
[data-theme="dark"] {
  --bg:           #1A1410;
  --bg-card:      #251C18;
  --bg-overlay:   rgba(0, 0, 0, 0.92);
  --text:         #F0E8E0;
  --text-muted:   #988880;
  --text-light:   #665858;
  --border:       #352820;
  --shadow:       rgba(0,0,0,0.3);
  --shadow-hover: rgba(0,0,0,0.5);
  --placeholder:  #201810;
  --cream:        #201810;
}

/* ── リセット ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Zen Maru Gothic', 'Noto Sans JP', sans-serif;
  font-size: 15px;
  line-height: 1.8;
  transition: background 0.4s, color 0.4s;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; font-family: inherit; }

/* ── パーティクル背景 ── */
#particle-canvas {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0; opacity: 0.6;
}

/* ── ヘッダー ── */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 40px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255, 253, 248, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border);
  transition: background 0.4s, border-color 0.4s;
}
[data-theme="dark"] #site-header { background: rgba(26, 20, 16, 0.92); }

.site-logo {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
  cursor: pointer;
  transition: opacity 0.3s;
  display: flex; align-items: center; gap: 10px;
}
.site-logo:hover { opacity: 0.7; }
.site-logo-icon { font-size: 1.4rem; }
.site-logo span {
  display: block;
  font-size: 0.58rem;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  font-weight: 400;
  font-family: 'Cormorant Garamond', serif;
  margin-top: 2px;
}

.header-right { display: flex; align-items: center; gap: 12px; }

/* 子どもバッジ（ヘッダー右） */
.child-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 12px; border-radius: 20px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em;
  border: 1.5px solid;
}
.child-badge.mei { color: var(--mei); border-color: var(--mei); background: rgba(232,131,109,0.08); }
.child-badge.iku { color: var(--iku); border-color: var(--iku); background: rgba(109,168,216,0.08); }

/* ダークモードトグル */
#theme-toggle {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1.5px solid var(--border); color: var(--text-muted);
  font-size: 1rem; display: flex; align-items: center; justify-content: center;
  transition: border-color 0.3s, color 0.3s, transform 0.3s;
}
#theme-toggle:hover { border-color: var(--gold); color: var(--gold); transform: rotate(20deg); }

/* ── メイン ── */
#app { position: relative; z-index: 1; padding-top: 76px; min-height: 100vh; }

/* ── フェード ── */
.fade-enter { opacity: 0; transform: translateY(16px); }
.fade-active { opacity: 1; transform: translateY(0); transition: opacity 0.35s ease, transform 0.35s ease; }

/* =============================================
   TOP（ヒーロー）
   ============================================= */
#view-top {
  min-height: calc(100vh - 76px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 60px 24px;
}

.hero-decoration,
.hero-dots {
  display: flex; gap: 8px; justify-content: center; margin-bottom: 28px;
}
.hero-dot {
  width: 10px; height: 10px; border-radius: 50%;
  animation: dotBounce 1.8s ease-in-out infinite;
}
.hero-dot:nth-child(1) { background: var(--mei); animation-delay: 0s; }
.hero-dot:nth-child(2) { background: var(--gold); animation-delay: 0.2s; }
.hero-dot:nth-child(3) { background: var(--iku); animation-delay: 0.4s; }
.hero-dot:nth-child(4) { background: var(--mei); animation-delay: 0.6s; }
.hero-dot:nth-child(5) { background: var(--gold); animation-delay: 0.8s; }
@keyframes dotBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.72rem; letter-spacing: 0.5em; color: var(--gold); margin-bottom: 16px;
}

.hero-title,
.hero-title-ja {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: clamp(2rem, 7vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.3;
  margin-bottom: 8px;
}
.hero-title .mei-color { color: var(--mei); }
.hero-title .iku-color { color: var(--iku); }

.hero-divider {
  width: 48px; height: 3px;
  background: linear-gradient(90deg, var(--mei), var(--iku));
  margin: 16px auto 20px; border-radius: 2px;
}

.hero-title-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(0.75rem, 2vw, 0.95rem);
  letter-spacing: 0.45em;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.hero-copy {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 2;
  letter-spacing: 0.1em;
  margin-bottom: 48px;
}

.hero-children,
.hero-child-cards {
  display: flex; gap: 20px; justify-content: center; margin-bottom: 48px; align-items: center; flex-wrap: wrap;
}
.hero-child-card {
  padding: 16px 32px; border-radius: 16px;
  border: 2px solid; text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
}
.hero-child-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px var(--shadow-hover); }
.hero-child-card.mei { border-color: var(--mei); background: rgba(232,131,109,0.06); }
.hero-child-card.iku { border-color: var(--iku); background: rgba(109,168,216,0.06); }
.hero-child-icon { font-size: 2rem; margin-bottom: 8px; }
.hero-child-name {
  font-size: 1.3rem; font-weight: 700; letter-spacing: 0.1em; margin-bottom: 4px;
}
.hero-child-card.mei .hero-child-name { color: var(--mei); }
.hero-child-card.iku .hero-child-name { color: var(--iku); }
.hero-child-label,
.hero-child-sub { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.2em; }

.btn-enter {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 40px; border-radius: 40px;
  background: linear-gradient(135deg, var(--mei), var(--iku));
  color: #fff; font-size: 0.85rem; font-weight: 700; letter-spacing: 0.2em;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 20px rgba(232,131,109,0.3);
}
.btn-enter:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(232,131,109,0.4); }

/* =============================================
   ギャラリー
   ============================================= */
#view-gallery { max-width: 1100px; margin: 0 auto; padding: 56px 24px 100px; }

.page-heading { text-align: center; margin-bottom: 48px; }
.page-heading-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.72rem; letter-spacing: 0.5em; color: var(--gold); margin-bottom: 12px;
}
.page-heading-title {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 700;
  color: var(--text); letter-spacing: 0.1em; margin-bottom: 20px;
}
.page-heading-divider {
  width: 48px; height: 3px;
  background: linear-gradient(90deg, var(--mei), var(--iku));
  margin: 0 auto; border-radius: 2px;
}

/* タブ */
.gallery-tabs {
  display: flex; justify-content: center; gap: 8px; margin-bottom: 40px; flex-wrap: wrap;
}
.tab-btn {
  padding: 8px 24px; border-radius: 20px;
  border: 2px solid var(--border);
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em;
  color: var(--text-muted); transition: all 0.25s; background: transparent;
  font-family: 'Zen Maru Gothic', sans-serif;
}
.tab-btn:hover { border-color: var(--gold); color: var(--gold); }
.tab-btn.active,
.tab-btn.active-all  { background: linear-gradient(135deg, var(--mei), var(--iku)); border-color: transparent; color: #fff; }
.tab-btn.active-mei  { background: var(--mei); border-color: var(--mei); color: #fff; }
.tab-btn.active-iku  { background: var(--iku); border-color: var(--iku); color: #fff; }

/* カードグリッド */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

/* カード */
.artwork-card {
  background: var(--bg-card); border: 2px solid var(--border); border-radius: 16px;
  overflow: hidden; cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s;
  opacity: 0; transform: translateY(20px);
}
.artwork-card.visible { opacity: 1; transform: translateY(0); transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease; }
.artwork-card:hover { transform: translateY(-6px); box-shadow: 0 16px 48px var(--shadow-hover); }
.artwork-card.card-mei:hover { border-color: rgba(232,131,109,0.5); }
.artwork-card.card-iku:hover { border-color: rgba(109,168,216,0.5); }

/* カードサムネイル：白背景の原画が映えるよう bg=white 固定 */
.card-thumb {
  position: relative; width: 100%; padding-top: 100%;
  overflow: hidden; background: #FFFFFF;
}
.card-thumb img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: contain; /* coverではなくcontainで作品全体を表示 */
  padding: 8px;        /* 余白で作品が窮屈に見えないよう */
  transition: transform 0.5s ease;
  /* multiply blend: 白い背景を透明に見せる視覚効果 */
  mix-blend-mode: multiply;
}
[data-theme="dark"] .card-thumb img { mix-blend-mode: normal; }
.artwork-card:hover .card-thumb img { transform: scale(1.05); }

.card-placeholder {
  position: absolute; inset: 0; display: flex;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; background: var(--placeholder);
}
.card-placeholder-icon { font-size: 2.5rem; opacity: 0.4; }
.card-placeholder-text { font-size: 0.78rem; color: var(--text-light); letter-spacing: 0.3em; }

/* 子どもラベル（カード上部ライン） */
.card-child-bar { height: 4px; }
.card-child-bar.mei { background: var(--mei); }
.card-child-bar.iku { background: var(--iku); }

.card-info { padding: 16px 18px 18px; }
.card-child-name,
.card-child-badge {
  display: inline-block; padding: 2px 10px; border-radius: 10px;
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.15em;
  margin-bottom: 6px; color: #fff;
}
.card-child-name.mei { background: rgba(232,131,109,0.12); color: var(--mei); }
.card-child-name.iku { background: rgba(109,168,216,0.12); color: var(--iku); }

.card-meta { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; flex-wrap: wrap; }
.card-category { font-size: 0.68rem; color: var(--text-muted); letter-spacing: 0.12em; }
.card-title { font-size: 0.95rem; font-weight: 700; letter-spacing: 0.05em; color: var(--text); margin-bottom: 4px; }
.card-date { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.1em; }

/* =============================================
   作品詳細
   ============================================= */
#view-detail { max-width: 900px; margin: 0 auto; padding: 40px 24px 100px; }

.btn-back {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; letter-spacing: 0.15em; color: var(--text-muted);
  margin-bottom: 40px; transition: color 0.3s, gap 0.3s;
}
.btn-back:hover { color: var(--text); gap: 12px; }

.detail-child-bar { height: 5px; border-radius: 3px; margin-bottom: 32px; }
.detail-child-bar.mei { background: linear-gradient(90deg, var(--mei), #f0a898); }
.detail-child-bar.iku { background: linear-gradient(90deg, var(--iku), #98c8e8); }

.detail-header { margin-bottom: 36px; }
.detail-child-label,
.detail-child-badge {
  display: inline-block; padding: 3px 14px; border-radius: 12px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.15em; margin-bottom: 12px;
  color: #fff;
}
.detail-child-label.mei,
.detail-child-badge[style*="--mei"] { background: var(--mei); }
.detail-child-label.iku,
.detail-child-badge[style*="--iku"] { background: var(--iku); }

.detail-category { font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.3em; margin-bottom: 8px; }
.detail-date { font-size: 0.78rem; color: var(--text-muted); letter-spacing: 0.15em; margin-top: 6px; }

.detail-text-section { }
.detail-section-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.68rem; letter-spacing: 0.45em; color: var(--gold);
  margin-bottom: 16px;
}

.detail-title {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.2rem); font-weight: 700;
  color: var(--text); letter-spacing: 0.08em; margin-bottom: 8px; line-height: 1.4;
}
.detail-meta { font-size: 0.78rem; color: var(--text-muted); letter-spacing: 0.15em; }

/* 作品メイン画像：白背景で大きく原画を表示 */
.detail-img-wrap {
  background: #FFFFFF; border: 2px solid var(--border); border-radius: 12px;
  padding: 20px; margin-bottom: 48px; cursor: zoom-in;
  transition: box-shadow 0.3s;
}
.detail-img-wrap:hover { box-shadow: 0 8px 40px var(--shadow-hover); }
.detail-img-wrap img {
  width: 100%; height: auto; max-height: 70vh;
  object-fit: contain;
  mix-blend-mode: multiply;
}
[data-theme="dark"] .detail-img-wrap { background: #2A2018; }
[data-theme="dark"] .detail-img-wrap img { mix-blend-mode: normal; }
.detail-zoom-hint {
  text-align: center; margin-top: 10px;
  font-size: 0.68rem; color: var(--text-light); letter-spacing: 0.2em;
}

.detail-divider { width: 100%; height: 1px; background: var(--border); margin-bottom: 36px; }

.detail-description {
  font-size: 0.9rem; line-height: 2.2; color: var(--text);
  letter-spacing: 0.06em; margin-bottom: 20px;
}
.detail-memo {
  font-size: 0.8rem; line-height: 2; color: var(--text-muted);
  border-left: 3px solid var(--border); padding-left: 16px;
}

/* =============================================
   モーダル
   ============================================= */
#modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--bg-overlay);
  display: flex; align-items: center; justify-content: center; padding: 24px;
  opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s;
}
#modal-overlay.open { opacity: 1; visibility: visible; }
#modal-img {
  max-width: 90vw; max-height: 88vh; object-fit: contain;
  border-radius: 8px;
}
#modal-close {
  position: fixed; top: 20px; right: 24px;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,0.2); color: #fff; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, transform 0.2s; z-index: 1001;
}
#modal-close:hover { background: rgba(255,255,255,0.35); transform: rotate(90deg); }

/* =============================================
   フッター
   ============================================= */
footer {
  position: relative; z-index: 1; text-align: center;
  padding: 40px 24px; border-top: 2px solid var(--border);
  transition: border-color 0.4s;
}
.footer-logo { font-family: 'Zen Maru Gothic', sans-serif; font-weight: 700; font-size: 1rem; color: var(--text-muted); margin-bottom: 6px; }
.footer-copy { font-size: 0.68rem; color: var(--text-light); letter-spacing: 0.15em; }

/* =============================================
   レスポンシブ
   ============================================= */
@media (max-width: 900px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 640px) {
  #site-header { padding: 14px 16px; }
  .site-logo { font-size: 1rem; }
  .child-badge { display: none; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  #view-gallery { padding: 40px 14px 80px; }
  #view-detail { padding: 32px 16px 80px; }
  .hero-children { flex-direction: column; align-items: center; gap: 14px; }
  .hero-child-card { width: 200px; }
  .btn-enter { padding: 12px 28px; font-size: 0.8rem; }
}
@media (max-width: 400px) {
  .gallery-grid { grid-template-columns: 1fr; }
}