/* ===================================================
   ギャラリーページ 完全版スタイル
=================================================== */

/* ================= 全体レイアウト ================= */

#gallery-container {
  max-width: 1100px;
  margin: 40px auto 60px;
  padding: 0 24px;
}

/* ================= ページタイトル ================= */

#head-text {
  text-align: center;
  margin: 40px 0 30px;
}

#head-text h1 {
  font-size: 2.4rem;
  font-weight: 700;
  color: #003366;
  letter-spacing: 2px;
}

/* ================= セクション ================= */

.gallery-section {
  margin-bottom: 70px;
}

.gallery-section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #003366;
  padding-bottom: 12px;
  margin-bottom: 30px;
  border-bottom: 2px solid #e5ecf3;
  letter-spacing: 1px;
}

/* ================= グリッド ================= */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

/* ================= 画像カード ================= */

.gallery-item {
  display: block;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.gallery-item img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
}

/* ================= 戻るボタン ================= */

.back-link {
  text-align: center;
  margin: 120px 0 80px;
}

.back-link a {
  display: inline-block;
  padding: 14px 34px;
  background: #003366;
  color: #fff;
  border-radius: 28px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.back-link a:hover {
  background: #0055a0;
  transform: translateY(-2px);
}

/* ================= レスポンシブ ================= */

@media (max-width: 768px) {

  #gallery-container {
    margin: 100px auto 80px;
  }

  #head-text h1 {
    font-size: 2rem;
  }

  .gallery-section h2 {
    font-size: 1.5rem;
  }

  .gallery-item img {
    height: 200px;
  }
}