/* =============================================
   北村家 写真ギャラリー — スタイル
   ============================================= */

:root {
  --bg:         #FAFAF8;
  --bg-card:    #FFFFFF;
  --bg-header:  rgba(250, 250, 248, 0.92);
  --text:       #2C2C2C;
  --text-sub:   #888880;
  --text-light: #BBBBAA;
  --accent:     #4A7FA5;
  --accent2:    #7BAF8A;
  --gold:       #C8963A;
  --border:     #EBEBЕ8;
  --shadow:     rgba(0, 0, 0, 0.07);
  --shadow-lg:  rgba(0, 0, 0, 0.18);
  --overlay:    rgba(10, 10, 10, 0.9);
}
[data-theme="dark"] {
  --bg:         #161616;
  --bg-card:    #222220;
  --bg-header:  rgba(22, 22, 22, 0.94);
  --text:       #EEEEE8;
  --text-sub:   #888880;
  --text-light: #444440;
  --border:     #2E2E2C;
  --shadow:     rgba(0, 0, 0, 0.35);
  --shadow-lg:  rgba(0, 0, 0, 0.6);
  --overlay:    rgba(0, 0, 0, 0.94);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  font-size: 14px;
  line-height: 1.7;
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
button { cursor: pointer; background: none; border: none; font-family: inherit; }

/* ── パーティクル ── */
#particle-canvas {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
  opacity: 0.4;
}

/* ── ヘッダー ── */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 32px;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-header);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
}

.site-logo {
  display: flex; align-items: baseline; gap: 10px;
  cursor: pointer; transition: opacity 0.3s;
}
.site-logo:hover { opacity: 0.7; }
.site-logo-main {
  font-size: 1rem; font-weight: 700; letter-spacing: 0.06em; color: var(--text);
}
.site-logo-sub {
  font-size: 0.65rem; letter-spacing: 0.25em; color: var(--text-sub);
}

.header-right { display: flex; align-items: center; gap: 10px; }
.header-stat {
  font-size: 0.7rem; color: var(--text-sub); letter-spacing: 0.08em;
}

#theme-toggle {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--border); color: var(--text-sub);
  font-size: 0.9rem; 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(--accent); color: var(--accent); transform: rotate(20deg); }

/* ── メイン ── */
#app { position: relative; z-index: 1; padding-top: 60px; min-height: 100vh; }

/* ── フェード ── */
.fade-enter { opacity: 0; transform: translateY(12px); }
.fade-active { opacity: 1; transform: translateY(0); transition: opacity 0.3s ease, transform 0.3s ease; }

/* =============================================
   TOP
   ============================================= */
#view-top {
  min-height: calc(100vh - 60px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 60px 24px;
}
.hero-label {
  font-size: 0.68rem; letter-spacing: 0.5em; color: var(--text-sub); margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700; letter-spacing: 0.12em;
  color: var(--text); margin-bottom: 10px; line-height: 1.3;
}
.hero-title span { color: var(--accent); }
.hero-sub {
  font-size: 0.78rem; letter-spacing: 0.35em; color: var(--text-sub); margin-bottom: 32px;
}
.hero-divider {
  width: 40px; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  margin: 0 auto 32px; border-radius: 1px;
}
.hero-stats {
  display: flex; gap: 32px; justify-content: center; margin-bottom: 40px; flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat-num {
  font-size: 1.8rem; font-weight: 700; color: var(--accent); letter-spacing: 0.05em;
}
.hero-stat-label {
  font-size: 0.68rem; color: var(--text-sub); letter-spacing: 0.15em; margin-top: 2px;
}
.btn-enter {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 36px; border-radius: 30px;
  background: var(--accent); color: #fff;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.18em;
  transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
  box-shadow: 0 4px 18px rgba(74, 127, 165, 0.35);
}
.btn-enter:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(74, 127, 165, 0.45); background: #3a6f95; }

/* =============================================
   ギャラリー
   ============================================= */
#view-gallery { max-width: 1200px; margin: 0 auto; padding: 40px 24px 100px; }

/* 年月ナビゲーション */
.gallery-nav {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px;
}
.nav-year-btn {
  padding: 6px 18px; border-radius: 20px;
  border: 1.5px solid var(--border);
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em;
  color: var(--text-sub); transition: all 0.22s;
}
.nav-year-btn:hover { border-color: var(--accent); color: var(--accent); }
.nav-year-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.gallery-month-nav {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 28px;
}
.nav-month-btn {
  padding: 4px 14px; border-radius: 16px;
  border: 1px solid var(--border);
  font-size: 0.72rem; letter-spacing: 0.08em;
  color: var(--text-sub); transition: all 0.22s;
}
.nav-month-btn:hover { border-color: var(--accent2); color: var(--accent2); }
.nav-month-btn.active { background: var(--accent2); border-color: var(--accent2); color: #fff; }
.nav-month-btn.month-all { border-style: dashed; }

/* 人物フィルター */
.person-filter {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px;
  padding: 16px; background: var(--bg-card); border-radius: 12px;
  border: 1px solid var(--border);
}
.person-filter-label {
  font-size: 0.68rem; color: var(--text-sub); letter-spacing: 0.15em;
  align-self: center; margin-right: 4px;
}
.person-btn {
  padding: 5px 16px; border-radius: 16px;
  border: 1.5px solid var(--border);
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  color: var(--text-sub); transition: all 0.22s;
}
.person-btn:hover { border-color: var(--gold); color: var(--gold); }
.person-btn.active { background: var(--gold); border-color: var(--gold); color: #fff; }
.person-btn.coming-soon { opacity: 0.4; cursor: default; }

/* ギャラリー情報 */
.gallery-info {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px; flex-wrap: wrap; gap: 10px;
}
.gallery-count {
  font-size: 0.72rem; color: var(--text-sub); letter-spacing: 0.1em;
}
.sort-btn {
  font-size: 0.72rem; color: var(--text-sub);
  padding: 4px 12px; border: 1px solid var(--border); border-radius: 12px;
  transition: all 0.2s;
}
.sort-btn:hover { border-color: var(--accent); color: var(--accent); }

/* フォトグリッド */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.photo-card {
  position: relative; border-radius: 10px; overflow: hidden;
  background: var(--bg-card); cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  opacity: 0; transform: translateY(16px);
  aspect-ratio: 1 / 1;
}
.photo-card.visible { opacity: 1; transform: translateY(0); transition: opacity 0.4s ease, transform 0.4s ease, box-shadow 0.25s ease; }
.photo-card:hover { transform: translateY(-4px) scale(1.02); box-shadow: 0 12px 36px var(--shadow-lg); }

.photo-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-card:hover img { transform: scale(1.06); }

.photo-card-overlay {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 24px 12px 12px;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 100%);
  opacity: 0; transition: opacity 0.3s;
}
.photo-card:hover .photo-card-overlay { opacity: 1; }
.photo-card-date {
  font-size: 0.68rem; color: rgba(255,255,255,0.9); letter-spacing: 0.08em;
}
.photo-card-persons {
  font-size: 0.65rem; color: rgba(255,255,255,0.75); margin-top: 2px;
}

.photo-fav {
  position: absolute; top: 8px; right: 8px;
  font-size: 1rem; opacity: 0; transition: opacity 0.3s;
}
.photo-card:hover .photo-fav { opacity: 1; }
.photo-card.is-fav .photo-fav { opacity: 1; }

/* ロード中 */
#gallery-loading {
  text-align: center; padding: 60px; color: var(--text-sub);
  font-size: 0.8rem; letter-spacing: 0.2em;
}

/* =============================================
   モーダル（全画面表示）
   ============================================= */
#modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--overlay);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
#modal-overlay.open { opacity: 1; visibility: visible; }

#modal-img-wrap {
  position: relative; max-width: 90vw; max-height: 90vh;
  display: flex; align-items: center; justify-content: center;
}
#modal-img {
  max-width: 90vw; max-height: 85vh;
  object-fit: contain; border-radius: 4px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
}

#modal-info {
  position: absolute; bottom: -36px; left: 0; right: 0;
  text-align: center;
  font-size: 0.72rem; color: rgba(255,255,255,0.65); letter-spacing: 0.1em;
}

#modal-close {
  position: fixed; top: 16px; right: 20px;
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.15); color: #fff; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, transform 0.2s; z-index: 1001;
}
#modal-close:hover { background: rgba(255,255,255,0.3); transform: rotate(90deg); }

#modal-prev, #modal-next {
  position: fixed; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(255,255,255,0.12); color: #fff; font-size: 1.4rem;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s; z-index: 1001;
}
#modal-prev { left: 16px; }
#modal-next { right: 16px; }
#modal-prev:hover, #modal-next:hover { background: rgba(255,255,255,0.25); }

/* =============================================
   フッター
   ============================================= */
footer {
  position: relative; z-index: 1; text-align: center;
  padding: 32px 24px; border-top: 1px solid var(--border);
}
.footer-text { font-size: 0.65rem; color: var(--text-light); letter-spacing: 0.15em; }

/* =============================================
   レスポンシブ
   ============================================= */
@media (max-width: 768px) {
  #site-header { padding: 0 16px; }
  .header-stat { display: none; }
  .photo-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; }
  #view-gallery { padding: 28px 14px 80px; }
  #modal-prev { left: 8px; }
  #modal-next { right: 8px; }
}
@media (max-width: 480px) {
  .photo-grid { grid-template-columns: repeat(3, 1fr); gap: 4px; }
  .photo-card { border-radius: 6px; }
  .hero-stats { gap: 20px; }
}