.single-column {
  padding: 0rem 1rem;
}

.post-container {
  max-width: 800px; /* 本文は少し狭め */
  margin: 150px auto 60px;
}

.post-title {
  font-size: 2rem;
  margin-bottom: 1rem;
      text-align: left;
}

.post-date {
  text-align: right;
  font-size: 0.9rem;
  color: #888;
  margin-bottom: 2rem;
}

.post-thumbnail {
  margin-bottom: 2rem;
}

.post-thumbnail img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.post-content {
  line-height: 1.8;
  font-size: 1rem;
  color: #333;
}

.post-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: 4rem;
  padding-top: 4rem;
  border-top: 1px solid #eee;
    gap: 1rem;
        flex-wrap: nowrap;
    flex-direction: row;
}

.post-navigation .prev,
.post-navigation .next {
  font-size: 0.95rem;
}

@media screen and (max-width: 900px) {
  .post-container {
        width: 88%;
    max-width: 100%;
  }

  .post-title {
    font-size: 1.5rem;
  }

  .post-content {
    font-size: 0.95rem;
    line-height: 1.7;
  }

  .post-navigation {
    gap: 1rem;
    align-items: flex-start;
  }
}

@media screen and (max-width: 500px) {
  .post-container {
            width: 95%;
  }

}

/** -----------------------------------
   ブロックエディタ用
-------------------------------------**/

.post-content h1 {
  font-size: 2rem;
  margin: 2rem 0 1rem;
}
.post-content h2 {
  font-size: 1.6rem;
  margin: 3rem 0 2rem;
    border-left: 3px solid #9ac57b9e;
    padding-left: 1.5rem;
}

.post-content h3 {
  font-size: 1.3rem;
  margin: 1.5rem 0 0.75rem;
}

.post-content h4 {
  font-size: 1.1rem;
  margin: 1rem 0 0.5rem;
}

.post-content h5,
.post-content h6 {
  font-size: 1rem;
  margin: 1rem 0 0.5rem;
  font-weight: normal;
  color: #666;
}

.wp-block-separator {
    border: none;
    border-top: 1px solid #eee;
}

@media screen and (max-width: 768px) {
  .post-content h1 { font-size: 1.6rem; }
  .post-content h2 { font-size: 1.4rem; }
  .post-content h3 { font-size: 1.2rem; }
  .post-content h4 { font-size: 1rem; }
}
.post-content p {
  font-size: 16px;
}



/** -----------------------------------
   投稿ナビゲーション
-------------------------------------**/



.post-navigation .prev a,
.post-navigation .next a {
  display: inline-block;
  padding: 1rem 2rem;
    padding: 1rem 2rem;
background-color: #ddc890;;
  color: #fff;
  text-decoration: none;
  font-size: 1rem;
  font-weight: bold;
  text-align: center;
  transition: background-color 0.3s ease;
}

.post-navigation .prev a:hover,
.post-navigation .next a:hover {
  background-color: #333;
}