aside.sidebar {
  margin: 0 auto;
  padding: 24px;
  width: 100%;
}

aside.sidebar h3 {
  text-align: center;
}

aside.sidebar .search-area {
  border: 2px solid var(--border-color);
  border-radius: 5px;
  display: flex;
  flex-wrap: wrap;
}

/* Search form styles */
aside.sidebar form[role="search"] {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
}

aside.sidebar form[role="search"] input[type="search"] {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-size: 14px;
}

aside.sidebar form[role="search"] button[type="submit"] {
  padding: 8px 16px;
  background-color: var(--btn-color);
  color: #333;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: bold;
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

aside.sidebar form[role="search"] button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}


aside.sidebar .profile {
  margin-top: 24px;
  padding: 12px;
  border: 2px solid var(--border-color);
  border-radius: 5px;
}

.profile img {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
  aspect-ratio: 1/1;
  border-radius: 50%;
  border: 2px solid #000;
}

h4.profile-name, h4.popular-title, h4.tags-title {
  margin-top: 0;
  text-align: center;
  position: relative;
}

.profile-description {
  background-image: linear-gradient(to bottom, transparent calc(2.5em - 1px), #ccc calc(2.5em - 1px), #ccc 2.5em, transparent 2.5em);
  background-size: 100% 2.5em;
  line-height: 2.5em;
  padding-bottom: 1px;
  font-size: 12px;
}

div.side-nav {
  margin-top: 24px;
  padding: 12px;
  border: 2px solid var(--border-color);
  border-radius: 5px;
}

div.side-nav ul {
  margin-top: 12px;
}

h4.side-category-title, h4.popular-title, h4.tags-title::after{
  margin-top: 0;
  text-align: center;
  display: inline-block;
  position: relative;
  width: 100%;
}

h4.side-category-title::after,
h4.popular-title::after, 
h4.tags-title::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 6em;
  height: 2px;
  background-color: var(--border-color);
}

.side-nav ul {
  padding:0;
  list-style: none;
}

.side-nav ul li {
  width: 100%;
}

.side-nav a {
  text-decoration: none;
  transition: font-size 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-color);
}

.side-nav a:hover {
  font-size: 1.1em;
}

.nav-category-name-spiritual:hover {
  color: var(--category-spiritual);
}

.nav-category-name-positive:hover {
  color: var(--category-positive);
}

.nav-category-name-health:hover {
  color: var(--category-health);
}

.side-nav img {
  width: 20px;
  height: 20px;
  margin: 0;
}


/* カテゴリー別の色設定 */
.side-nav img.card-category-spiritual {
  border-color: var(--category-spiritual);
  background-color: var(--category-spiritual);
}

.side-nav img.card-category-positive {
  border-color: var(--category-positive);
  background-color: var(--category-positive);
}

.side-nav img.card-category-health {
  border-color: var(--category-health);
  background-color: var(--category-health);
}

.profile a {
  text-decoration: none;
}

.see-profile {
  display: block;
  margin: 0 auto;
  text-align: center;
  background-color: var(--btn-color);
  color: #333;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: bold;
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.see-profile:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

p.no-popular {
  margin: 12px 0;
}

aside.sidebar .popular-article, aside.sidebar .tags {
  margin-top: 24px;
  padding: 12px;
  border: 2px solid var(--border-color);
  border-radius: 5px;
}

/* 人気記事リストのスタイル */
.popular-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0 0;
}

.popular-item {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e5e5e5;
}

.popular-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

.popular-link {
  display: flex;
  gap: 12px;
  text-decoration: none;
  color: var(--text-color);
  transition: opacity 0.3s ease;
}

.popular-link:hover {
  opacity: 0.8;
}

.popular-thumbnail {
  flex-shrink: 0;
  width: 80px;
  height: 60px;
  overflow: hidden;
  border-radius: 5px;
}

.popular-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.popular-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.popular-post-title {
  margin: 0;
  font-size: 12px;
  /* line-height: 1.4; */
  /* font-weight: normal; */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* タグリストのスタイル */
aside.sidebar .tags ul {
  padding: 0;
  margin: 20px 0 12px 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

aside.sidebar .side-tag-items {
  list-style: none;
  margin: 0;
  padding: 0;
}

aside.sidebar .side-tag {
  display: inline-block;
  padding: 3px 6px;
  background-color: var(--btn-color);
  border-radius: 5px;
  text-decoration: none;
  color: var(--text-color);
  font-size: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

aside.sidebar .side-tag:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}


/* タブレット */
@media (max-width: 1023px) {
  .profile img {
    width: 30%;
  }

  aside.sidebar {
    padding: 0;
  }
}

/* タブレット */
@media (max-width: 767px) {
  .profile img {
    width: 50%;
  }

  aside.sidebar {
    padding: 0;
  }
}