/* リンク色を本文と同じグレーに */
a, a:visited {
  color: #888;
  text-decoration: none;
}
a:hover, a:active {
  color: #444;
}
body {
  margin: 0;
  font-family: 'Segoe UI', 'Meiryo', sans-serif;
  background: #fff;
  color: #888;
  display: flex;
  font-size: 14px;
}

.sidebar {
  width: 220px;
  min-height: 100vh;
  background: #f8f8f8;
  padding: 2rem 1rem;
  box-sizing: border-box;
  position: fixed;
  left: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  z-index: 100;
  border-right: 1px solid #eee;
}
.logo {
  font-weight: bold;
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #222;
}
.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.main-nav a {
  text-decoration: none;
  color: #222;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.main-nav a:hover {
  color: #0078d7;
}

.main-content {
  margin-left: 220px;
  padding: 2rem 2rem 2rem 2rem;
  flex: 1;
  box-sizing: border-box;
}
.news-list {
  padding-left: 0;
}
.news-list li {
  margin-bottom: 0.5rem;
}
.date {
  color: #888;
  margin-right: 1em;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 100px);
  gap: 8px;
  margin-top: 1rem;
}
.gallery-grid a {
  display: block;
  width: 100px;
  height: 100px;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform 0.2s;
  margin: 0 auto;
}
.gallery-grid a:hover {
  transform: scale(1.04);
}
.gallery-grid img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  display: block;
  border-radius: 8px;
}
@media (max-width: 900px) {
  .sidebar {
    width: 160px;
    padding: 1rem 0.5rem;
  }
  .main-content {
    margin-left: 160px;
    padding: 1rem;
  }
  .logo {
    font-size: 1rem;
    margin-bottom: 1rem;
  }
  .main-nav a {
    font-size: 0.85rem;
  }
}

@media (max-width: 350px) {
  body {
    flex-direction: column;
  }
  .sidebar {
    position: static;
    width: 100%;
    min-height: unset;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    border-right: none;
    border-bottom: 1px solid #eee;
    padding: 0.5rem 1rem;
  }
  .main-nav ul {
    flex-direction: row;
    gap: 1rem;
  }
  .main-content {
    margin-left: 0;
    padding: 1rem;
  }
}