/**
 * news-instagram.css
 *
 * フロントサイト専用：ニュース × Instagram 統合スタイルシート
 *
 * 設計思想:
 *   - BEM記法（Block__Element--Modifier）準拠
 *   - CSS カスタムプロパティ（変数）による一元管理
 *   - モバイルファースト設計
 *   - Cocoonのグローバルスタイルと競合しない名前空間（ni-）
 *   - WCAG 2.1 AA 準拠のコントラスト比確保
 *   - パフォーマンス優先
 *
 * カラーパレット:
 *   Navy   #1B2A4A — 信頼・品格・安定感（基調色）
 *   Gold   #C8962A — 高級感・視線誘導（アクセント）
 *   Olive  #8FA67A — 温かさ・地域性・自然感（サブカラー）
 *
 * @package    EisoChildTheme
 * @since      1.0.0
 */

/* ════════════════════════════════════════════════
   CSS カスタムプロパティ（デザイントークン）
   ════════════════════════════════════════════════ */
:root {
  /* ── ブランドカラー ── */
  --ni-navy:         #1B2A4A;
  --ni-navy-light:   #243564;
  --ni-navy-dark:    #111C32;
  --ni-gold:         #C8962A;
  --ni-gold-light:   #E0AE48;
  --ni-gold-pale:    #F5E9C8;
  --ni-olive:        #8FA67A;
  --ni-olive-light:  #B0C49A;
  --ni-olive-pale:   #EFF4EB;

  /* ── ニュートラル ── */
  --ni-white:        #FFFFFF;
  --ni-off-white:    #FAFAF8;
  --ni-gray-100:     #F4F4F2;
  --ni-gray-200:     #E8E8E4;
  --ni-gray-400:     #AEAAA2;
  --ni-gray-700:     #4A4744;
  --ni-black:        #1A1816;

  /* ── タイポグラフィ ── */
  --ni-font-base:    'Noto Serif JP', 'Georgia', serif;
  --ni-font-label:   'Cormorant Garamond', 'Playfair Display', 'Georgia', serif;
  --ni-font-ui:      'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;

  --ni-size-xs:      0.75rem;
  --ni-size-sm:      0.875rem;
  --ni-size-base:    1rem;
  --ni-size-lg:      1.125rem;
  --ni-size-xl:      1.375rem;
  --ni-size-2xl:     1.75rem;
  --ni-size-3xl:     2.25rem;
  --ni-size-label:   5rem;

  /* ── スペーシング ── */
  --ni-space-xs:     0.5rem;
  --ni-space-sm:     1rem;
  --ni-space-md:     1.5rem;
  --ni-space-lg:     2.5rem;
  --ni-space-xl:     4rem;
  --ni-space-2xl:    6rem;

  /* ── ボーダー・シャドウ ── */
  --ni-radius-sm:    4px;
  --ni-radius-md:    8px;
  --ni-radius-lg:    16px;
  --ni-shadow-sm:    0 2px 8px rgba(27, 42, 74, 0.08);
  --ni-shadow-md:    0 4px 20px rgba(27, 42, 74, 0.12);
  --ni-shadow-lg:    0 8px 40px rgba(27, 42, 74, 0.16);

  /* ── トランジション ── */
  --ni-ease-out:     cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ni-ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --ni-duration-sm:  160ms;
  --ni-duration-md:  280ms;
  --ni-duration-lg:  480ms;
}

/* ════════════════════════════════════════════════
   セクション全体ラッパー
   ════════════════════════════════════════════════ */
.ni-section {
  width: 100%;
  background-color: var(--ni-off-white);
  overflow: hidden;
}

/* ════════════════════════════════════════════════
   共通ボタン
   ════════════════════════════════════════════════ */
.ni-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--ni-space-xs);
  padding: 0.75rem 1.75rem;
  font-family: var(--ni-font-ui);
  font-size: var(--ni-size-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--ni-radius-sm);
  cursor: pointer;
  transition:
    background-color var(--ni-duration-md) var(--ni-ease-out),
    color           var(--ni-duration-md) var(--ni-ease-out),
    border-color    var(--ni-duration-md) var(--ni-ease-out),
    transform       var(--ni-duration-sm) var(--ni-ease-spring),
    box-shadow      var(--ni-duration-md) var(--ni-ease-out);
  -webkit-tap-highlight-color: transparent;
}

.ni-btn:hover,
.ni-btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--ni-shadow-md);
  outline: none;
}

.ni-btn:focus-visible {
  outline: 3px solid var(--ni-gold);
  outline-offset: 3px;
}

.ni-btn:active {
  transform: translateY(0);
}

.ni-btn--outline {
  background-color: transparent;
  color: var(--ni-navy);
  border-color: var(--ni-navy);
}

.ni-btn--outline:hover,
.ni-btn--outline:focus-visible {
  background-color: var(--ni-navy);
  color: var(--ni-white);
}

.ni-btn--primary {
  background: linear-gradient(135deg, var(--ni-navy-light), var(--ni-navy));
  color: var(--ni-white);
  border-color: transparent;
}

.ni-btn--primary:hover,
.ni-btn--primary:focus-visible {
  background: linear-gradient(135deg, var(--ni-navy), var(--ni-navy-dark));
  box-shadow: var(--ni-shadow-lg);
}

.ni-btn--follow {
  background: linear-gradient(135deg, var(--ni-gold), #A87820);
  color: var(--ni-white);
  border-color: transparent;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 0.625rem 1.5rem;
}

.ni-btn--follow:hover,
.ni-btn--follow:focus-visible {
  background: linear-gradient(135deg, var(--ni-gold-light), var(--ni-gold));
}

.ni-btn__handle {
  font-size: var(--ni-size-xs);
  opacity: 0.85;
  letter-spacing: 0.04em;
}

/* ════════════════════════════════════════════════
   ニュースブロック
   ════════════════════════════════════════════════ */
.ni-news {
  padding: var(--ni-space-xl) var(--ni-space-sm);
  background-color: var(--ni-white);
  border-bottom: 1px solid var(--ni-gray-200);
}

/* ── ヘッダー ── */
.ni-news__header {
  position: relative;
  text-align: center;
  margin-bottom: var(--ni-space-lg);
  padding-bottom: var(--ni-space-md);
}

.ni-news__label {
  font-family: var(--ni-font-label);
  font-size: var(--ni-size-label);
  font-weight: 300;
  letter-spacing: 0.2em;
  line-height: 1;
  color: var(--ni-gray-200);
  position: absolute;
  top: -1.25rem;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  pointer-events: none;
  z-index: 0;
  user-select: none;
}

.ni-news__title {
  position: relative;
  font-family: var(--ni-font-base);
  font-size: var(--ni-size-2xl);
  font-weight: 400;
  color: var(--ni-navy);
  margin: 0 0 var(--ni-space-xs) !important;
  letter-spacing: 0.12em;
  z-index: 1;
  border: none !important;
  background: transparent !important;
  padding: 0 !important;
}

.ni-news__subtitle {
  position: relative;
  font-family: var(--ni-font-ui);
  font-size: var(--ni-size-sm);
  color: var(--ni-gray-700);
  margin: 0;
  letter-spacing: 0.04em;
  line-height: 1.8;
  z-index: 1;
}

.ni-news__accent {
  width: 40px;
  height: 2px;
  background: linear-gradient(to right, var(--ni-gold), var(--ni-gold-light));
  margin: var(--ni-space-md) auto 0;
  border-radius: 2px;
}

/* ── お知らせメッセージ（2週間投稿なし） ── */
.ni-news__notice {
  display: flex;
  align-items: flex-start;
  gap: var(--ni-space-sm);
  background: linear-gradient(135deg, var(--ni-gold-pale), rgba(245, 233, 200, 0.4));
  border: 1px solid rgba(200, 150, 42, 0.3);
  border-left: 4px solid var(--ni-gold);
  border-radius: var(--ni-radius-md);
  padding: var(--ni-space-md);
  margin-bottom: var(--ni-space-md);
}

.ni-news__notice-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.1em;
}

.ni-news__notice-text {
  font-family: var(--ni-font-ui);
  font-size: var(--ni-size-sm);
  color: var(--ni-navy);
  margin: 0;
  line-height: 1.8;
  letter-spacing: 0.02em;
}

/* ── ニュース一覧 ── */
.ni-news__list {
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
  border-top: 1px solid var(--ni-gray-200) !important;
  background: transparent !important;
}

.ni-news__item {
  border-bottom: 1px solid var(--ni-gray-200) !important;
  margin: 0 !important;
  padding: 0 !important;
  background: transparent !important;
  list-style: none !important;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity var(--ni-duration-lg) var(--ni-ease-out) var(--ni-delay, 0ms),
    transform var(--ni-duration-lg) var(--ni-ease-out) var(--ni-delay, 0ms);
}

.ni-news__item::before {
  display: none !important;
}

.ni-news__item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.ni-news__link {
  display: flex;
  align-items: center;
  gap: var(--ni-space-sm);
  padding: 1.125rem var(--ni-space-xs);
  text-decoration: none !important;
  color: inherit;
  transition:
    background-color var(--ni-duration-sm) var(--ni-ease-out),
    padding-left var(--ni-duration-md) var(--ni-ease-out);
  border-radius: var(--ni-radius-sm);
  -webkit-tap-highlight-color: transparent;
}

.ni-news__link:hover,
.ni-news__link:focus-visible {
  background-color: var(--ni-gray-100);
  padding-left: var(--ni-space-sm);
  outline: none;
}

.ni-news__link:focus-visible {
  outline: 2px solid var(--ni-gold);
  outline-offset: -2px;
}

.ni-news__meta {
  display: flex;
  align-items: center;
  gap: var(--ni-space-xs);
  flex-shrink: 0;
}

.ni-news__date {
  font-family: var(--ni-font-label);
  font-size: var(--ni-size-sm);
  color: var(--ni-gray-400);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.ni-news__cat {
  display: inline-block;
  font-family: var(--ni-font-ui);
  font-size: var(--ni-size-xs);
  color: var(--ni-navy);
  background-color: var(--ni-olive-pale);
  border: 1px solid var(--ni-olive-light);
  padding: 0.125rem 0.5rem;
  border-radius: 2px;
  white-space: nowrap;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.ni-news__item-title {
  flex: 1;
  font-family: var(--ni-font-ui);
  font-size: var(--ni-size-base);
  color: var(--ni-navy-dark);
  line-height: 1.6;
  letter-spacing: 0.02em;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.ni-news__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--ni-gold);
  opacity: 0;
  transform: translateX(-6px);
  transition:
    opacity var(--ni-duration-md) var(--ni-ease-out),
    transform var(--ni-duration-md) var(--ni-ease-out);
}

.ni-news__link:hover .ni-news__arrow,
.ni-news__link:focus-visible .ni-news__arrow {
  opacity: 1;
  transform: translateX(0);
}

.ni-news__empty {
  font-family: var(--ni-font-ui);
  font-size: var(--ni-size-sm);
  color: var(--ni-gray-400);
  text-align: center;
  padding: var(--ni-space-lg) 0;
  margin: 0;
}

.ni-news__footer {
  margin-top: var(--ni-space-md);
  text-align: right;
}

/* ════════════════════════════════════════════════
   Instagramブロック
   ════════════════════════════════════════════════ */
.ni-instagram {
  padding: var(--ni-space-xl) var(--ni-space-sm);
  background: linear-gradient(170deg, var(--ni-navy-dark) 0%, var(--ni-navy) 60%, var(--ni-navy-light) 100%);
  position: relative;
  overflow: hidden;
}

.ni-instagram::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(143, 166, 122, 0.12) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

.ni-instagram::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(200, 150, 42, 0.1) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

.ni-instagram__header {
  position: relative;
  text-align: center;
  margin-bottom: var(--ni-space-lg);
  z-index: 1;
}

.ni-instagram__label {
  font-family: var(--ni-font-label);
  font-size: var(--ni-size-label);
  font-weight: 300;
  letter-spacing: 0.25em;
  line-height: 1;
  color: rgba(255, 255, 255, 0.06);
  position: absolute;
  top: -1.5rem;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

.ni-instagram__logo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: var(--ni-space-sm);
}

.ni-instagram__logo {
  color: var(--ni-gold-light);
}

.ni-instagram__title {
  font-family: var(--ni-font-base);
  font-size: var(--ni-size-2xl);
  font-weight: 400;
  color: var(--ni-white);
  margin: 0 0 var(--ni-space-xs) !important;
  letter-spacing: 0.12em;
  position: relative;
  z-index: 1;
  border: none !important;
  background: transparent !important;
  padding: 0 !important;
}

.ni-instagram__subtitle {
  font-family: var(--ni-font-ui);
  font-size: var(--ni-size-sm);
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  letter-spacing: 0.04em;
  line-height: 2;
  position: relative;
  z-index: 1;
}

.ni-instagram__accent {
  width: 40px;
  height: 2px;
  background: linear-gradient(to right, var(--ni-gold), var(--ni-gold-light));
  margin: var(--ni-space-md) auto 0;
  border-radius: 2px;
}

.ni-instagram__feed-wrap {
  position: relative;
  z-index: 1;
  margin-bottom: var(--ni-space-lg);
}

.ni-instagram__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--ni-radius-md);
  overflow: hidden;
  box-shadow: var(--ni-shadow-lg);
}

.ni-instagram__item {
  opacity: 0;
  transform: scale(0.96);
  transition:
    opacity var(--ni-duration-lg) var(--ni-ease-out) var(--ni-delay, 0ms),
    transform var(--ni-duration-lg) var(--ni-ease-out) var(--ni-delay, 0ms);
}

.ni-instagram__item.is-visible {
  opacity: 1;
  transform: scale(1);
}

.ni-instagram__item-link {
  display: block;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.ni-instagram__img-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background-color: var(--ni-navy-dark);
}

.ni-instagram__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--ni-duration-lg) var(--ni-ease-out);
}

.ni-instagram__overlay {
  position: absolute;
  inset: 0;
  background: rgba(27, 42, 74, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--ni-duration-md) var(--ni-ease-out);
  color: var(--ni-white);
}

.ni-instagram__item-link:hover .ni-instagram__img {
  transform: scale(1.06);
}

.ni-instagram__item-link:hover .ni-instagram__overlay,
.ni-instagram__item-link:focus-visible .ni-instagram__overlay {
  opacity: 1;
}

.ni-instagram__item-link:focus-visible {
  outline: 3px solid var(--ni-gold);
  outline-offset: -3px;
}

.ni-instagram__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--ni-space-sm);
  position: relative;
  z-index: 1;
}

/* ════════════════════════════════════════════════
   Smash Balloon プラグイン統合
   ════════════════════════════════════════════════ */
.ni-instagram__feed-wrap .sbi {
  border: none !important;
  background: transparent !important;
  padding: 0 !important;
}

.ni-instagram__feed-wrap .sbi_header {
  display: none !important;
}

/* ════════════════════════════════════════════════
   レスポンシブ：タブレット（768px〜）
   ════════════════════════════════════════════════ */
@media screen and (min-width: 768px) {
  .ni-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .ni-news {
    padding: var(--ni-space-xl) var(--ni-space-lg);
    border-bottom: none;
    border-right: 1px solid var(--ni-gray-200);
  }

  .ni-news__label { font-size: 6rem; }
  .ni-news__title { font-size: var(--ni-size-3xl); }

  .ni-instagram { padding: var(--ni-space-xl) var(--ni-space-lg); }
  .ni-instagram__label { font-size: 6rem; }
  .ni-instagram__title { font-size: var(--ni-size-3xl); }
  .ni-instagram__grid { gap: 4px; }
}

/* ════════════════════════════════════════════════
   レスポンシブ：デスクトップ（1024px〜）
   ════════════════════════════════════════════════ */
@media screen and (min-width: 1024px) {
  .ni-section {
    grid-template-columns: 5fr 7fr;
    max-width: 1280px;
    margin: 0 auto;
  }

  .ni-news { padding: var(--ni-space-2xl) var(--ni-space-xl); }
  .ni-instagram { padding: var(--ni-space-2xl) var(--ni-space-xl); }

  .ni-news__label,
  .ni-instagram__label { font-size: 7rem; }

  .ni-news__item-title { font-size: var(--ni-size-lg); }
  .ni-instagram__grid { gap: 6px; }
}

/* ════════════════════════════════════════════════
   モーション低減（アクセシビリティ）
   ════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  .ni-news__item,
  .ni-instagram__item,
  .ni-instagram__img,
  .ni-instagram__overlay,
  .ni-news__link,
  .ni-btn {
    transition: none !important;
    animation: none !important;
  }

  .ni-news__item,
  .ni-instagram__item {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* SP改行補助 */
.ni-br-sp { display: block; }

@media screen and (min-width: 768px) {
  .ni-br-sp { display: none; }
}

/* ── Instagram プレースホルダー（Smash Balloon 未使用時）── */
.ni-instagram__img-placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: var(--ni-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ni-navy);
}

/* ============================================================
   Smash Balloon 出力スタイル上書き
   ============================================================ */

/* ラッパー */
.ni-instagram__sb-wrap {
  width: 100%;
}

/* Smash Balloon のグリッドをサイトデザインに合わせる */
.ni-instagram__sb-wrap .sb-instagram-feed,
.ni-instagram__sb-wrap #sb_instagram {
  padding: 0 !important;
  background: transparent !important;
}

/* 画像グリッド：3列固定 */
.ni-instagram__sb-wrap #sb_instagram .sbi_photo_wrap {
  border-radius: 8px;
  overflow: hidden;
}

/* ホバーエフェクトをサイトデザインと統一 */
.ni-instagram__sb-wrap #sb_instagram .sbi_photo_wrap:hover img {
  transform: scale(1.04);
  transition: transform .35s ease;
}

/* Smash Balloon のブランディング表示を非表示 */
.ni-instagram__sb-wrap .sbi_load_btn_wrapper,
.ni-instagram__sb-wrap #sbi_load,
.ni-instagram__sb-wrap .sbi-powered-by {
  display: none !important;
}

/* モバイル：2列に変更（768px未満） */
@media (max-width: 767px) {
  .ni-instagram__sb-wrap #sb_instagram .sbi_photo {
    width: 50% !important;
  }
}