/* =========================== */
/* 🔍 検索＆並び替えエリア     */
/* =========================== */
#search-and-sort {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) auto;
}

#keyword-input,
#sort-select {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: 9999px;
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
  transition: all var(--transition-fast);
  max-width: 320px;
  text-align: center;
  appearance: none;
}

#keyword-input:hover,
#sort-select:hover,
#keyword-input:focus,
#sort-select:focus {
  background-color: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
  outline: none;
}


/* =========================== */
/* 🧭 カテゴリナビゲーション */
/* =========================== */
#category-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0 var(--spacing-lg);
  justify-content: center;
}

.category-link {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--btn-font-size);
  font-weight: 600;
  border-radius: 9999px;
  color: var(--color-accent);
  background-color: transparent;
  border: 2px solid var(--color-accent);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.category-link:hover,
.category-link:focus {
  background-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 10px var(--color-accent);
  outline: none;
}

.category-link.selected,
.category-link[aria-pressed="true"] {
  background-color: var(--color-accent);
  color: #fff;
  cursor: default;
  box-shadow: 0 0 8px var(--color-accent);
}


/* =========================== */
/* 🧭 カテゴリナビゲーション */
/* =========================== */
#category-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0 var(--spacing-lg);
  justify-content: center;
}

.category-link {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--btn-font-size);
  font-weight: 600;
  border-radius: 9999px;
  color: var(--color-accent);
  background-color: transparent;
  border: 2px solid var(--color-accent);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.category-link:hover,
.category-link:focus {
  background-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 10px var(--color-accent);
  outline: none;
}

.category-link.selected,
.category-link[aria-pressed="true"] {
  background-color: var(--color-accent);
  color: #fff;
  cursor: default;
  box-shadow: 0 0 8px var(--color-accent);
}

/* =========================== */
/* 🏷 タグフィルター          */
/* =========================== */
#tag-filter {
  margin: 0 auto var(--spacing-xl);
  padding: 0 var(--spacing-xs);
}

#tag-filter ul,
#tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  list-style: none;
  padding: 0;
  margin: 0;
  justify-content: center;
}

#tag-list a,
#tag-filter a {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: 9999px;
  border: 2px solid var(--color-accent);
  background-color: transparent;
  color: var(--color-accent);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

#tag-list a:hover,
#tag-filter a:hover,
#tag-list a:focus-visible,
#tag-filter a:focus-visible {
  background-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 8px var(--color-accent);
  outline: none;
}

#tag-list a.selected,
#tag-filter a.selected {
  background-color: var(--color-accent);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 0 8px var(--color-accent);
  cursor: default;
}

/* =========================== */
/* 📚 ページネーション       */
/* =========================== */
#pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

#pagination button {
  padding: var(--spacing-xs) var(--spacing-lg);
  font-size: var(--btn-font-size);
  font-weight: 600;
  border: 2px solid var(--color-accent);
  background-color: transparent;
  color: var(--color-accent);
  border-radius: 9999px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

#pagination button:hover:not([disabled]),
#pagination button:focus:not([disabled]) {
  background-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 10px var(--color-accent);
  outline: none;
}

#pagination button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  border-color: var(--color-disabled);
  color: var(--color-disabled);
}

/* ========================== */
/* 📚 ブログ記事リスト統一    */
/* ========================== */

#post-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
  padding: 0 var(--spacing-md);
}


/* ブログカードスタイル */
#post-list article {
  background-color: rgba(255, 255, 255, 0.015);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-glow-pink);
  transition: box-shadow var(--transition-fast);
  text-align: left;
}

#post-list article:hover {
  box-shadow: 0 0 25px var(--color-accent);
}

/* タイトル */
#post-list article h3 {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

/* 本文抜粋 */
#post-list article p {
  font-size: 0.95rem;
  color: var(--color-subtle);
  margin-bottom: var(--spacing-sm);
  text-align: left;
}

/* 日付などのメタ情報 */
#post-list article .post-meta {
  font-size: 0.8rem;
  color: var(--color-accent);
  display: block;
  margin-top: var(--spacing-sm);
}

/* 画像（必要ならスタイル継承） */
#post-list article img {
  width: 100%;
  height: auto;
  margin-bottom: var(--spacing-md);
  border-radius: var(--border-radius);
}

/* 記事リンク */
#post-list article a {
  text-decoration: none;
  color: inherit;
}

.post-thumbnail img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius, 8px);
  margin-bottom: var(--spacing-sm, 1rem);
}



/* ========== 📱 モバイル対応（〜768px） ========== */
@media screen and (max-width: 768px) {


  

  /* 📚 ページネーション */
  #pagination {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-sm);
  }

  #pagination button {
    font-size: 0.95rem;
    padding: var(--spacing-xs) var(--spacing-md);
  }

  /* 📚 ブログ記事リスト */
  #post-list {
    grid-template-columns: 1fr;
    padding: 0 var(--spacing-sm);
  }

  #post-list article h3 {
    font-size: 1.1rem;
  }

  #post-list article p {
    font-size: 0.9rem;
  }

  #post-list article .post-meta {
    font-size: 0.75rem;
  }
}


/* ========== 📱 スマートフォン対応（〜480px） ========== */
@media screen and (max-width: 480px) {
   #post-list {
    grid-template-columns: 1fr; /* 1カラムに落とす */
    padding: 0 var(--spacing-sm);
  }


  #pagination {
    gap: var(--spacing-xs);
  }

  #pagination button {
    font-size: 0.85rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  #post-list article h3 {
    font-size: 1rem;
  }

  #post-list article p {
    font-size: 0.85rem;
  }
}


/* =========================== */
/* 🧱 区切り線                */
/* =========================== */
.section-divider {
  height: 2px;
  background-color: var(--color-line);
  opacity: 0.4;
  border-radius: 1px;
  margin: var(--spacing-xl) 0;
}




.hero-section {
  background: radial-gradient(circle at center, #1a1b23 0%, #0f1015 100%);
  color: var(--color-text);
  padding: var(--spacing-xl) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  isolation: isolate;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -40%;
  width: 180%;
  height: 180%;
  background: conic-gradient(
    from 180deg at 50% 50%,
    var(--color-primary),
    transparent,
    var(--color-accent),
    transparent,
    var(--color-primary)
  );
  animation: spinGlow 30s linear infinite;
  opacity: 0.045;
  z-index: 0;
}

.hero-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.015), transparent 70%);
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: 0;
}

.hero-section .particle {
  position: absolute;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent-light);
  border-radius: 50%;
  opacity: 0.4;
  animation: floatParticle 12s infinite ease-in-out;
  z-index: 0;
  filter: blur(1.2px);
}
.hero-section .particle:nth-child(2) { top: 20%; left: 18%; animation-delay: 0s; }
.hero-section .particle:nth-child(3) { top: 42%; left: 72%; animation-delay: 2s; }
.hero-section .particle:nth-child(4) { top: 67%; left: 40%; animation-delay: 4s; }
.hero-section .particle:nth-child(5) { top: 88%; left: 58%; animation-delay: 6s; }
.hero-section .particle:nth-child(6) { top: 12%; left: 88%; animation-delay: 8s; }
.hero-section .particle:nth-child(7) { top: 50%; left: 8%; animation-delay: 10s; }

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  animation: fadeLiftIn 1.2s ease-out both;
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.01em;
  animation: fadeLiftIn 1.2s ease-out both;
}

.hero-title .highlight {
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: pulseGlow 3s ease-in-out infinite alternate;
}

.hero-sub,
.hero-message {
  font-size: 1.1rem;
  color: var(--color-subtle);
  margin-bottom: var(--spacing-md);
  line-height: 1.9;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  letter-spacing: 0.01em;
}

.hero-message strong {
  color: var(--color-accent);
  font-weight: 600;
}

.hero-cta {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.hero-cta a {
  font-size: 1rem;
  padding: 0.75em 1.6em;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: all 0.3s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-hot {
  background-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 12px var(--color-primary);
  transition: all 0.3s ease;
}

.btn-hot:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 20px var(--color-primary);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: #000;
}

.btn-secondary:hover {
  background-color: #ffebf3;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.text-fadein {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s ease, transform 1s ease;
  display: inline-block;
}

.text-fadein.active {
  opacity: 1;
  transform: translateY(0);
}

.hero-lead {
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.8;
  max-width: 60ch;
  margin: 1.5rem auto 0;
  color: var(--color-subtle);
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeLiftIn 1.5s ease-out 0.4s forwards;
  letter-spacing: 0.03em;
  font-family: var(--font-sans);
}

/* Animations */
@keyframes spinGlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes floatParticle {
  0% {
    transform: translateY(0) scale(1);
    opacity: 0.4;
  }
  50% {
    transform: translateY(-18px) scale(1.2);
    opacity: 0.8;
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 0.4;
  }
}

@keyframes fadeLiftIn {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes pulseGlow {
  0% {
    text-shadow: 0 0 4px var(--color-primary);
  }
  100% {
    text-shadow: 0 0 10px var(--color-secondary);
  }
}

/* ダークモード強調 */
@media (prefers-color-scheme: dark) {
  .hero-lead {
    color: var(--color-text);
  }
}

/* モバイル調整 */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2.1rem;
    line-height: 1.4;
  }

  .hero-lead {
    font-size: 1.05rem;
    padding: 0 1rem;
  }

  .hero-cta a {
    font-size: 0.9rem;
    padding: 0.6em 1.2em;
  }
}


/* ========================== */
/* 🌌 メインコンテンツ全体  */
/* ========================== */
#main-content {
  margin: 0 auto;
  max-width: 900px;
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
}
/* ============================
   🌈 セクションタイトル（強化）
   ============================ */

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  text-align: center;
  position: relative;
  opacity: 0;
  transform: translateY(40px) scale(0.97);
  transition: opacity 1s ease, transform 1s ease;
  background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,0.15));
}

.title-fadein.active {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 64%;
  height: 4px;
  background: linear-gradient(to right, var(--color-highlight), var(--color-accent-dark));
  border-radius: 100px;
  box-shadow: 0 0 24px rgba(255, 245, 200, 0.3);
  opacity: 0;
  transition: opacity 1.2s ease 0.4s;
}

.title-fadein.active::after {
  opacity: 1;
}

/* ============================
   📝 テキストフェードイン
   ============================ */

.text-fadein {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s ease, transform 0.9s ease;
  display: block;
  max-width: 720px;
  margin: 0 auto;
  padding-top: var(--spacing-md);
}

.text-fadein.active {
  opacity: 1;
  transform: translateY(0);
}

.text-fadein p {
  margin-bottom: var(--spacing-md);
  text-align: left;
  font-size: 1.08rem;
  line-height: 2;
  color: var(--color-text);
  font-weight: 400;
  opacity: 0.92;
}

.text-fadein strong {
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ============================
   🧊 セクションの背景リズム
   ============================ */

.section {
  padding: var(--spacing-xl) var(--spacing-lg);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.9;
  font-size: 1.08rem;
  letter-spacing: 0.01em;
  transition: background-color 0.6s ease;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.section:nth-child(even) {
  background-color: #101115;
}

/* ============================
   💫 CTAボタン（洗練と意図）
   ============================ */

/* ============================
   🎯 CTAボタン（再利用版）
   ============================ */

.cta-group {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
}

.cta-group a {
  font-size: 1rem;
  padding: 0.75em 1.6em;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: all 0.3s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

/* 再利用：ボタンバリエーション */

.btn-hot {
  background-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 12px var(--color-primary);
  transition: all 0.3s ease;
}

.btn-hot:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 20px var(--color-primary);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: #000;
}

.btn-secondary:hover {
  background-color: #ffebf3;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

/* ============================ */
/* 📜 カスタムULリストスタイル */
/* ============================ */
ul.custom-list {
  list-style: none;
  padding-left: 0;
  margin: var(--spacing-lg) auto;
  max-width: 720px;
  text-align: left;
}

ul.custom-list li {
  position: relative;
  padding-left: 1.8em;
  margin-bottom: var(--spacing-sm);
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-text);
  opacity: 0.92;
  transition: color 0.3s ease;
}

/* カスタムバレット */
ul.custom-list li::before {
  content: '✦';
  position: absolute;
  left: 0;
  top: 0.1em;
  color: var(--color-accent);
  font-size: 1rem;
  line-height: 1;
  opacity: 0.8;
  transform: scale(1);
  transition: transform 0.3s ease;
}

/* ホバーで微反応（感覚を触発） */
ul.custom-list li:hover {
  color: var(--color-accent);
}

ul.custom-list li:hover::before {
  transform: scale(1.2);
  opacity: 1;
}

/* ============================
   📱 モバイル最適化（微調整）
   ============================ */

@media (max-width: 600px) {
  .section {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .section-title {
    font-size: 1.6rem;
    line-height: 1.4;
  }

  .text-fadein p {
    font-size: 1rem;
    line-height: 1.8;
  }

  .cta-group .btn {
    font-size: 0.95rem;
    padding: 0.6em 1.4em;
  }
}