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

ul, ol {
  list-style: none;
}

body {
  background: #333333;
  color: #fff;
  font-size: 100%;
}

img {
  display: block;
  border: none;
}

#wrapper {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 15px;
}

/* ロゴ */
#logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

#site-title {
  font-family: 'Meiryo', 'メイリオ', sans-serif;
  font-size: 14px;
  font-weight: bold;
  color: #cccccc;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* ヘッダー */
#site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 32px 10px;
}

/* ナビゲーション */
#navigation ul {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

#navigation a {
  display: inline-block;
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
}

#navigation a::before {
  content: '▶ ';
  font-size: 7px;
  vertical-align: middle;
  margin-right: 1px;
}

#navigation a:hover {
  color: #aaaaaa;
}

/* フォトグリッド — デスクトップ: 4列 */
#photoList {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0 0 8px;
}

#photoList li {
}

#photoList li a {
  display: block;
}

#photoList li a img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 4px solid #ffffff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#photoList li a:hover img {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
}

/* GLightbox 拡大写真の白枠・ホバーアニメーション */
@keyframes float {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-8px); }
  100% { transform: translateY(0); }
}

.gslide-image img {
  border: 4px solid #ffffff !important;
  transition: transform 0.3s ease;
}

.gslide-image img:hover {
  animation: float 2s ease-in-out infinite;
}

/* コピーライト */
#copyright {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 40px 0;
}

#copyright img {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

#copyright span {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: #aaaaaa;
  text-transform: uppercase;
}

/* タブレット: 3列 */
@media (max-width: 640px) {
  #site-header {
    padding: 24px 10px;
  }

  #photoList {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }
}

/* スマートフォン: 2列 */
@media (max-width: 420px) {
  #photoList {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  #copyright {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  #copyright img {
    margin: 0 auto;
  }
}