/* ============================================================
   ゲームひとひら綴り — style.css
   構成：
     1. CSS変数
     2. リセット・ベース
     3. 背景・雪エフェクト
     4. 蔦の装飾
     5. ラッパー
     6. ヘッダー
     7. ナビゲーション
     8. カード共通
     9. サイドバー共通（プロフィール・更新・リンク・タグ）
    10. フッター
    11. アニメーション
    12. レスポンシブ共通
    ---- ページ固有 ----
    13. index.html — トップページ
    14. list.html  — 記事一覧
    15. article.html — 記事本文
   ============================================================ */


/* ============================================================
   1. CSS変数
   ============================================================ */
:root {
  --bg: #f7f9fc;
  --bg2: #eef4fb;
  --snow: #ddeeff;
  --navy: #1a2a4a;
  --navy-mid: #2d4270;
  --blue-light: #b8d4ee;
  --blue-pale: #e0eef8;
  --silver: #c8d8e8;
  --accent: #F5A8E0;
  --accent2: #fc89b9;
  --green-vine: #5a8a6a;
  --card-bg: rgba(255,255,255,0.82);
  --card-border: #c4d8ee;
  --shadow: 0 2px 18px rgba(30,60,120,0.08);
}


/* ============================================================
   2. リセット・ベース
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--navy);
  font-family: 'Zen Maru Gothic', 'Hiragino Kaku Gothic ProN', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}


/* ============================================================
   3. 背景・雪エフェクト
   ============================================================ */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, #CEEBF8 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 100% 100%, #d4eaff 0%, transparent 60%),
    linear-gradient(160deg, #f0f7ff 0%, #f7fafd 50%, #EEF5F6 100%);
}

.bg-snowflakes {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cg fill='%232d5a9e' fill-opacity='1'%3E%3Cpath d='M40 10v60M10 40h60M22 22l36 36M22 58l36-36'stroke='%232d5a9e' stroke-width='2' fill='none'/%3E%3Ccircle cx='40' cy='40' r='3'/%3E%3Ccircle cx='40' cy='10' r='2.5'/%3E%3Ccircle cx='40' cy='70' r='2.5'/%3E%3Ccircle cx='10' cy='40' r='2.5'/%3E%3Ccircle cx='70' cy='40' r='2.5'/%3E%3Ccircle cx='22' cy='22' r='2'/%3E%3Ccircle cx='58' cy='58' r='2'/%3E%3Ccircle cx='22' cy='58' r='2'/%3E%3Ccircle cx='58' cy='22' r='2'/%3E%3C/g%3E%3C/svg%3E");
}

.snow-container {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.snowflake {
  position: absolute;
  top: -30px;
  color: #aac8e8;
  font-size: 1.1em;
  opacity: 0;
  animation: fall linear infinite;
}

@keyframes fall {
  0%   { opacity: 0; transform: translateY(-20px) rotate(0deg); }
  10%  { opacity: 0.7; }
  90%  { opacity: 0.5; }
  100% { opacity: 0; transform: translateY(100vh) rotate(360deg); }
}


/* ============================================================
   4. 蔦の装飾
   ============================================================ */
.vine-left,
.vine-right {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 36px;
  z-index: 2;
  pointer-events: none;
  opacity: 0.18;
}

.vine-left  { left: 0; }
.vine-right { right: 0; transform: scaleX(-1); }


/* ============================================================
   5. ラッパー
   ============================================================ */
#wrapper {
  position: relative;
  z-index: 10;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 60px;
}


/* ============================================================
   6. ヘッダー
   ============================================================ */
header {
  text-align: center;
  padding: 36px 0 20px;
  position: relative;
}

.site-title-deco {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 6px;
}

.deco-line {
  flex: 1;
  max-width: 160px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-light), transparent);
}

.site-title {
  font-family: 'Klee One', 'Hiragino Mincho ProN', serif;
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  color: var(--navy-mid);
  letter-spacing: 0.18em;
  text-shadow: 0 1px 8px rgba(100,150,220,0.18);
  text-decoration: none;
}

.site-subtitle {
  font-family: 'Shippori Mincho', serif;
  font-size: 0.78rem;
  color: #7090b0;
  letter-spacing: 0.25em;
  margin-top: 4px;
}

.snowflake-deco {
  color: #7aabcc;
  font-size: 1.3em;
  display: inline-block;
  animation: spin-slow 12s linear infinite;
}

@keyframes spin-slow {
  to { transform: rotate(360deg); }
}


/* ============================================================
   7. ナビゲーション
   ============================================================ */
nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px 2px;
  padding: 10px 0 18px;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 28px;
}

nav a {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 0.82rem;
  color: var(--navy-mid);
  text-decoration: none;
  padding: 5px 16px;
  border-radius: 20px;
  border: 1px solid transparent;
  letter-spacing: 0.1em;
  transition: all 0.2s ease;
  position: relative;
}

nav a::before {
  content: '❄';
  margin-right: 5px;
  font-size: 0.7em;
  opacity: 0.5;
}

nav a:hover,
nav a.active {
  background: var(--blue-pale);
  border-color: var(--blue-light);
  color: var(--navy);
}


/* ============================================================
   8. カード共通
   ============================================================ */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 26px 28px;
  box-shadow: 1px 1px 30px 2px #8bc2e5,inset 1px 1px 20px 3px #c8e6f9;
border-radius: 10px;
border-radius: 10px;
  backdrop-filter: blur(6px);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-light), var(--silver), var(--blue-light));
}

.card-title {
  font-family: 'Klee One', serif;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: #7090b8;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--blue-light), transparent);
}


/* ============================================================
   9. サイドバー共通
   ============================================================ */

/* プロフィール */
.avatar-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--card-border);
  margin-bottom: 16px;
}

.avatar-frame {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 2px solid var(--blue-light);
  background: linear-gradient(135deg, #d8eeff, #eef6ff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.2rem;
  box-shadow: 0 2px 12px rgba(80,140,210,0.15);
  position: relative;
  overflow: hidden;
}

.avatar-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 6px solid rgba(255,255,255,0.5);
}

.profile-name {
  font-family: 'Klee One', serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--navy-mid);
  letter-spacing: 0.12em;
  text-align: center;
}

.profile-bio {
  font-size: 0.78rem;
  color: #6080a0;
  text-align: center;
  line-height: 1.7;
  letter-spacing: 0.05em;
}

/* 最近の更新 */
.recent-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;  /* index.html用（list/articleでは上書きなし・同じ挙動） */
}

.recent-item a {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 0.8rem;
  color: var(--navy-mid);
  text-decoration: none;
  line-height: 1.5;
  padding: 6px 8px;
  border-radius: 6px;
  transition: background 0.15s;
}

.recent-item a:hover {
  background: var(--blue-pale);
}

.recent-item a:hover .recent-title {
  color: var(--accent);
}

.recent-snow1 {
  color: #4ab7ff;
  font-size: 0.8em;
  flex-shrink: 0;
  margin-top: 2px;
}

.recent-snow2 {
  color: #69d8c2;
  font-size: 0.8em;
  flex-shrink: 0;
  margin-top: 2px;
}

.recent-legend{
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  line-height:1.6;
}

.recent-legend-text{
  font-size: 0.72rem;
  color: #1c2d4f;
  line-height:1.6;
}

.recent-title {
  transition: color 0.15s;
}

.recent-date {
  font-size: 0.72rem;
  color: #90a8c0;
  display: block;
}

/* ソーシャルリンク */
.social-links {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 4px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 12px;
  border: 1px solid var(--card-border);
  border-radius: 7px;
  text-decoration: none;
  font-size: 0.78rem;
  color: var(--navy-mid);
  transition: all 0.2s;
}

.social-link:hover {
  background: var(--blue-pale);
  border-color: var(--blue-light);
}

.social-icon {
  font-size: 1em;
  width: 18px;
  text-align: center;
  opacity: 0.75;
}

/* タグクラウド */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-item {
  font-size: 0.72rem;
  padding: 3px 10px;
  border: 1px solid var(--card-border);
  background: var(--blue-pale);
  border-radius: 20px;
  color: var(--navy-mid);
  text-decoration: none;
  transition: all 0.15s;
}

.tag-item2 {
  font-size: 0.72rem;
  padding: 3px 10px;
  border: 1px solid var(--card-border);
  background: #ffffff;
  border-radius: 20px;
  color: var(--navy-mid);
  text-decoration: none;
  transition: all 0.15s;
}

.tag-item:hover {
  background: var(--blue-light);
  color: var(--navy);
}


/* ============================================================
   10. フッター
   ============================================================ */
footer {
  text-align: center;
  padding: 20px 0 10px;
  margin-top: 30px;
  border-top: 1px solid var(--card-border);
}

.footer-deco {
  font-size: 0.9rem;
  color: #a0b8d0;
  letter-spacing: 0.3em;
  margin-bottom: 6px;
}

.footer-copy {
  font-size: 0.7rem;
  color: #b0c4d8;
  letter-spacing: 0.15em;
}


/* ============================================================
   11. アニメーション
   ============================================================ */
.fade-in {
  animation: fadeIn 0.8s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in-delay-1 { animation-delay: 0.15s; }
.fade-in-delay-2 { animation-delay: 0.3s; }
.fade-in-delay-3 { animation-delay: 0.45s; }


/* ============================================================
   12. レスポンシブ共通
   ============================================================ */
@media (max-width: 700px) {
  #wrapper {
    padding: 0 14px 48px;
  }
  .main-grid {
    grid-template-columns: 1fr;
  }
  .vine-left,
  .vine-right {
    display: none;
  }
  nav a {
    font-size: 0.78rem;
    padding: 5px 12px;
  }
  .site-title {
    font-size: 1.4rem;
  }
}


/* ============================================================
   13. index.html — トップページ固有
   ============================================================ */

/* 2カラム */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  align-items: start;
}

/* 挨拶カード */
.greeting-card .greeting-text {
  font-family: 'Klee One', serif;
  font-size: 0.95rem;
  line-height: 2.1;
  color: var(--navy);
}

.greeting-card .greeting-text p + p {
  margin-top: 10px;
}

.greeting-em {
  color: var(--accent);
  font-weight: 600;
}

/* セクションリンク */
.section-links {
  margin-top: 22px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.sec-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--blue-pale);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--navy-mid);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  transition: all 0.2s;
}

.sec-link:hover {
  background: #d6eaf8;
  border-color: var(--blue-light);
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(50,100,180,0.1);
}

.sec-link-icon {
  font-size: 1.1em;
  opacity: 0.7;
}

/* プロフィールカード */
.profile-card {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* index.html レスポンシブ追加 */
@media (max-width: 700px) {
  .profile-card   { order: -1; }
  .section-links  { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  .section-links  { grid-template-columns: 1fr; }
}


/* ============================================================
   14. list.html — 記事一覧固有
   ============================================================ */

/* --- ゆうちゃん専用：タイトルのリンク色設定 --- */
.article-title a {
    color: var(--navy-mid) !important; /* 変な青を消して、サイトの基本色にするよ */
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-title a:hover {
    color: var(--accent) !important;   /* マウスを乗せた時はアクセントカラー（ピンク）に！ */
    text-decoration: underline;
}

/* 続きを読むボタンの色 */
.read-more {
    color: var(--accent2) !important;
    font-weight: 500;
    text-decoration: none;
    font-size: 0.85rem;
}

.read-more:hover {
    text-decoration: underline;
}

/* パンくず・ページ見出し */
.list-heading {
  margin-bottom: 20px;
}

.breadcrumb {
  font-size: 0.73rem;
  color: #90a8c0;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.breadcrumb a {
  color: var(--accent2);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb span {
  margin: 0 5px;
  opacity: 0.5;
}

.list-page-title {
  font-family: 'Klee One', serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--navy-mid);
  letter-spacing: 0.12em;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 5px;
}

/* 文字全体にフォントを適用 */
.list-page-title {
  font-family: 'Klee One', serif;
  font-size: 1.8rem;
}

/* 雪の結晶だけの色とアニメーション設定 */
.title-snow1 {
  color: #65baff;
  animation: spin-slow 12s linear infinite;
  display: inline-block;
}

.title-snow2 {
  color: #54fac8;
  animation: spin-slow 12s linear infinite;
  display: inline-block;
}

.list-details {
  font-size: 0.72rem;
  color: #90a8c0;
  letter-spacing: 0.05em;
}

/* タグフィルター */
.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 14px 0 4px;
}

.tag-filter a {
  font-size: 0.75rem;
  padding: 4px 13px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  border-radius: 20px;
  color: var(--navy-mid);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: all 0.15s;
}

.tag-filter a:hover {
  background: var(--blue-pale);
  border-color: var(--blue-light);
}

.tag-filter a.active {
  background: var(--blue-light);
  border-color: var(--blue-light);
  font-weight: 500;
}

/* 記事カード一覧 */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.article-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 22px 26px;
  box-shadow: 1px 1px 30px 2px #8bc2e5,inset 1px 1px 20px 3px #c8e6f9;
  backdrop-filter: blur(6px);
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.22s ease, transform 0.22s ease, border-color 0.22s ease;
}

.article-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-light), var(--silver), var(--blue-light));
}

.article-card:hover {
  box-shadow: 0 6px 28px rgba(30,60,120,0.13);
  transform: translateY(-2px);
  border-color: var(--blue-light);
  box-shadow: 1px 1px 30px 2px #8bc2e5,inset 1px 1px 20px 3px #c8e6f9;
}

.card-top {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 7px 12px;
  margin-bottom: 9px;
}

.card-category {
  font-size: 0.7rem;
  color: #7090b8;
  letter-spacing: 0.12em;
  background: var(--blue-pale);
  padding: 2px 10px;
  border-radius: 20px;
  border: 1px solid var(--card-border);
  font-family: 'Klee One', serif;
}

.card-date {
  font-size: 0.72rem;
  color: #90a8c0;
  font-family: 'Shippori Mincho', serif;
  letter-spacing: 0.1em;
}

.card-article-title {
  font-family: 'Klee One', serif;
  font-size: 1.0rem;
  font-weight: 600;
  color: var(--navy-mid);
  letter-spacing: 0.06em;
  line-height: 1.5;
  margin-bottom: 9px;
  transition: color 0.15s;
}

.article-card:hover .card-article-title {
  color: var(--accent);
}

.card-excerpt {
  font-size: 0.83rem;
  color: #4a6080;
  line-height: 1.9;
  letter-spacing: 0.03em;
  margin-bottom: 11px;
  font-family: 'Klee One', serif;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.card-tag {
  font-size: 0.68rem;
  padding: 2px 9px;
  border: 1px solid var(--silver);
  background: rgba(255,255,255,0.6);
  border-radius: 20px;
  color: #6080a0;
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: all 0.15s;
}

.card-tag:hover {
  background: var(--blue-pale);
  border-color: var(--blue-light);
  color: var(--navy-mid);
}

/* ページネーション */
.pagination {
  display: flex;
  justify-content: center;
  gap: 7px;
  margin-top: 26px;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--navy-mid);
  text-decoration: none;
  font-size: 0.82rem;
  transition: all 0.15s;
  backdrop-filter: blur(4px);
}

.page-btn:hover {
  background: var(--blue-pale);
  border-color: var(--blue-light);
}

.page-btn.current {
  background: var(--blue-light);
  border-color: var(--blue-light);
  color: var(--navy);
  font-weight: 500;
}

/* list.html レスポンシブ追加 */
@media (max-width: 700px) {
  .sidebar-col { display: none; }
}


/* ============================================================
   15. article.html — 記事本文固有
   ============================================================ */

/* パンくず（article用はmargin-bottomが異なる） */
.breadcrumb--article {
  margin-bottom: 14px;
}

/* 記事ヘッダー */
.article-header {
  margin-bottom: 20px;
}

.article-meta-top {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px 12px;
  margin-bottom: 12px;
}

.article-category {
  font-size: 0.7rem;
  color: #7090b8;
  letter-spacing: 0.12em;
  background: var(--blue-pale);
  padding: 3px 12px;
  border-radius: 20px;
  border: 1px solid var(--card-border);
  font-family: 'Klee One', serif;
}

.article-date {
  font-size: 0.75rem;
  color: #90a8c0;
  font-family: 'Shippori Mincho', serif;
  letter-spacing: 0.1em;
}

.article-title {
  font-family: 'Klee One', serif;
  font-weight: 600;
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  color: var(--navy-mid);
  letter-spacing: 0.08em;
  line-height: 1.5;
  margin-bottom: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--card-border);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.article-tag {
  font-size: 0.72rem;
  padding: 3px 11px;
  border: 1px solid var(--silver);
  background: rgba(255,255,255,0.65);
  border-radius: 20px;
  color: #6080a0;
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: all 0.15s;
}

.article-tag:hover {
  background: var(--blue-pale);
  border-color: var(--blue-light);
  color: var(--navy-mid);
}

/* 本文カード */
.article-body {
    white-space: pre-wrap; /* これを入れると、連続した改行もそのまま表示されます */
    word-wrap: break-word; /* 長い英単語があっても枠からはみ出しません */
}

.article-body-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 32px 34px;
  box-shadow: 1px 1px 30px 2px #8bc2e5,inset 1px 1px 20px 3px #c8e6f9;
  backdrop-filter: blur(6px);
  position: relative;
  overflow: hidden;
}

.article-body-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-light), var(--silver), var(--blue-light));
}

/* 本文テキスト */
.article-body {
  font-family: 'Klee One', serif;
  font-size: 0.95rem;
  line-height: 2.15;
  color: var(--navy);
  letter-spacing: 0.04em;
}

.article-body p {
  margin-bottom: 1.4em;
}

.article-body p:last-child {
  margin-bottom: 0;
}

.article-body h2 {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--navy-mid);
  margin: 1.8em 0 0.8em;
  padding-left: 12px;
  border-left: 3px solid var(--blue-light);
  letter-spacing: 0.08em;
}

/* スクリーンショット */
.article-screenshots {
  margin: 22px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.screenshot-item {
  display: block;
}

.screenshot-item img {
  width: 100%;
  max-width: 580px;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  box-shadow: 0 3px 16px rgba(30,60,120,0.1);
  display: block;
}

.screenshot-placeholder {
  width: 100%;
  max-width: 580px;
  aspect-ratio: 16/9;
  border-radius: 8px;
  border: 1px dashed var(--blue-light);
  background: var(--blue-pale);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #90b0cc;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.screenshot-placeholder .ph-icon {
  font-size: 2rem;
  opacity: 0.45;
}

.screenshot-caption {
  font-size: 0.74rem;
  color: #90a8c0;
  margin-top: 6px;
  font-style: italic;
  letter-spacing: 0.05em;
}

/* 記事末尾の一言 */
.article-footer-note {
  margin-top: 28px;
  padding: 13px 18px;
  background: linear-gradient(135deg, rgba(224,238,248,0.7), rgba(240,248,255,0.8));
  border: 1px solid var(--card-border);
  border-radius: 8px;
  font-size: 0.8rem;
  color: #5a7898;
  letter-spacing: 0.06em;
  line-height: 1.8;
  text-align: center;
  font-family: 'Klee One', serif;
}

.article-footer-note a {
  color: var(--accent2);
  text-decoration: none;
}

.article-footer-note a:hover {
  text-decoration: underline;
}

/* 前後記事ナビ */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 20px;

}

.article-nav-btn {
  display: block;
  padding: 13px 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  text-decoration: none;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
box-shadow: 1px 1px 30px 2px #8bc2e5,inset 1px 1px 20px 3px #c8e6f9;
}

.article-nav-btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-light), var(--silver), var(--blue-light));
}

.article-nav-btn:hover {
  background: var(--blue-pale);
  border-color: var(--blue-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(30,60,120,0.1);
  box-shadow: 1px 1px 30px 2px #8bc2e5,inset 1px 1px 20px 3px #c8e6f9;
}

.article-nav-btn.prev { text-align: left;margin:10px }
.article-nav-btn.next { text-align: right;margin:10px }

.nav-direction {
  font-size: 0.68rem;
  color: #90a8c0;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 5px;
}

.nav-title {
  font-family: 'Klee One', serif;
  font-size: 0.85rem;
  color: var(--navy-mid);
  line-height: 1.4;
  letter-spacing: 0.05em;
  transition: color 0.15s;
}

.article-nav-btn:hover .nav-title {
  color: var(--accent);
}

/* 同タグ記事 */
.related-section {
  margin-top: 20px;
}

.related-heading {
  font-family: 'Klee One', serif;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: #7090b8;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.related-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--blue-light), transparent);
}

.related-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-item a {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 9px 14px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--navy-mid);
  font-size: 0.82rem;
  box-shadow: 1px 1px 30px 2px #8bc2e5,inset 1px 1px 20px 3px #c8e6f9;
  backdrop-filter: blur(6px);
  transition: all 0.18s;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
  margin: 10px;
}

.related-item a::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-light), var(--silver), var(--blue-light));
}

.related-item a:hover {
  background: var(--blue-pale);
  border-color: var(--blue-light);
  transform: translateX(3px);
}

.related-item a:hover .rel-title {
  color: var(--accent);
}

.rel-snow {
  color: #7aabcc;
  flex-shrink: 0;
  font-size: 0.8em;
  margin-top: 2px;
}

.rel-title {
  transition: color 0.15s;
}

.rel-date {
  font-size: 0.7rem;
  color: #90a8c0;
  display: block;
}

/* article.html レスポンシブ追加 */
@media (max-width: 700px) {
  .sidebar-col       { display: none; }
  .article-body-card { padding: 22px 20px; }
  .article-nav       { grid-template-columns: 1fr; }
}


/* --- 記事の下に出る「一覧へ戻る」ボタンのデザイン --- */
#related-tag-link {
    margin-top: 40px; /* 上とのすきま */
}

/* 「❄ 同じタグの記事」という見出し */
.related-heading {
    font-family: 'Klee One', serif;
    font-size: 0.8rem;
    color: #90a8c0;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 見出しの横の線 */
.related-heading::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, #c4d8ee, transparent);
}