@charset "UTF-8";
/* ========================================
   事例集ページ専用スタイル
======================================== */
/* ページヒーロー */
/* ページヒーローのスタイルはstyle.cssで統一管理 */
/* フィルターセクション */
.cases-filter {
  padding: 3rem 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-light-gray);
}

/* 事例一覧 */
.cases-list {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(to bottom, #FFF 0%, #F8FAFC 100%);
}

/* フィルターボタン */
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  max-width: 1200px;
  margin-right: auto;
  margin-bottom: 3rem;
  margin-left: auto;
}

.filter-btn {
  position: relative;
  flex-shrink: 0;
  padding: 0.625rem 1.5rem;
  overflow: hidden;
  font-family: var(--font-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-dark);
  white-space: nowrap;
  cursor: pointer;
  background: var(--color-white);
  border: 2px solid var(--color-light-gray);
  border-radius: 50px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.filter-btn::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  content: "";
  background: rgba(139, 139, 139, 0.1);
  border-radius: 50%;
  transition: width 0.5s, height 0.5s;
  transform: translate(-50%, -50%);
}

.filter-btn:hover::before {
  width: 200px;
  height: 200px;
}

.filter-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(139, 139, 139, 0.2);
  transform: translateY(-3px) scale(1.05);
}

.filter-btn.active {
  color: var(--color-white);
  background: var(--gradient-primary);
  border-color: var(--color-primary);
  box-shadow: 0 6px 20px rgba(139, 139, 139, 0.4), 0 0 15px rgba(139, 139, 139, 0.2);
  transform: scale(1.05);
}

/* 各フィルターボタン個別カラー */
.filter-btn[data-category=all].active {
  background: var(--gradient-all);
  border-color: var(--color-border-all);
}

.filter-btn[data-category=full-fill].active {
  background: var(--gradient-full-fill);
  border-color: var(--color-border-full-fill);
}

.filter-btn[data-category=funs].active {
  background: var(--gradient-funs);
  border-color: var(--color-border-funs);
}

.filter-btn[data-category=hypeapp].active {
  background: var(--gradient-hypeapp);
  border-color: var(--color-border-hypeapp);
}

.filter-btn[data-category=dux].active {
  background: var(--gradient-dux);
  border-color: var(--color-border-dux);
}

.filter-btn[data-category=aim].active {
  background: var(--gradient-aim);
  border-color: var(--color-border-aim);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 2rem;
}

/* 事例アイテム */
.case-item {
  overflow: hidden;
  color: #fff;
  background: var(--color-white);
  border: 1px solid rgba(139, 139, 139, 0.08);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
}

.case-item.hidden {
  display: none;
}

.case-item-header {
  position: relative;
}

.case-item-image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 230px;
  overflow: hidden;
  background: var(--gradient-primary);
}

.case-item-image::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  content: "";
  background-image: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.1) 0%, transparent 50%), radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.case-item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(139, 164, 190, 0.5) 0%, rgba(168, 191, 206, 0.3) 100%);
}

.case-item:nth-child(2n) .case-item-overlay {
  background: linear-gradient(135deg, rgba(123, 168, 155, 0.5) 0%, rgba(152, 191, 175, 0.3) 100%);
}

.case-item:nth-child(3n) .case-item-overlay {
  background: linear-gradient(135deg, rgba(245, 230, 211, 0.5) 0%, rgba(255, 244, 224, 0.3) 100%);
}

.case-item:nth-child(4n) .case-item-overlay {
  background: linear-gradient(135deg, rgba(123, 175, 190, 0.5) 0%, rgba(147, 196, 208, 0.3) 100%);
}

.case-item:nth-child(5n) .case-item-overlay {
  background: linear-gradient(135deg, rgba(184, 157, 201, 0.5) 0%, rgba(201, 179, 217, 0.3) 100%);
}

.case-item-number {
  position: relative;
  z-index: 1;
  font-family: var(--font-secondary);
  font-size: 5rem;
  font-weight: 900;
  line-height: 1;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 40px rgba(255, 255, 255, 0.5);
  letter-spacing: -0.05em;
}

.case-item-meta {
  position: absolute;
  right: 2rem;
  bottom: 1.5rem;
  left: 2rem;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.case-item-company,
.case-item-industry {
  display: inline-block;
  padding: 0.625rem 1.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 50px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.case-item-industry {
  color: var(--color-white);
  background: rgba(10, 14, 39, 0.9);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

/* 各社カラー */
.case-item[data-category=full-fill] .case-item-company {
  background: var(--gradient-full-fill);
  border: 2px solid var(--color-border-full-fill);
}

.case-item[data-category=funs] .case-item-company {
  background: var(--gradient-funs);
  border: 2px solid var(--color-border-funs);
}

.case-item[data-category=hypeapp] .case-item-company {
  background: var(--gradient-hypeapp);
  border: 2px solid var(--color-border-hypeapp);
}

.case-item[data-category=dux] .case-item-company {
  background: var(--gradient-dux);
  border: 2px solid var(--color-border-dux);
}

.case-item[data-category=aim] .case-item-company {
  background: var(--gradient-aim);
  border: 2px solid var(--color-border-aim);
}

.case-item-content {
  padding: 2rem;
}

.case-item-title {
  margin-bottom: 1.5rem;
  font-size: 1.625rem;
  font-weight: 800;
  line-height: 1.4;
  color: #2D2D2D;
  letter-spacing: -0.01em;
}

.case-item-description {
  margin-bottom: 1.5rem;
  font-size: 1rem;
  line-height: 1.9;
  color: #4D4D4D;
}

.case-item-description strong {
  font-size: 1.05rem;
  font-weight: 700;
  color: #2D2D2D;
}

.case-item-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-bottom: 2rem;
}

.case-item-tags .tag {
  display: inline-block;
  padding: 0.5rem 1.125rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #5D7A9B;
  background: rgba(139, 164, 190, 0.12);
  border: 1px solid rgba(139, 164, 190, 0.2);
  border-radius: 50px;
  transition: none;
}

.case-item-tags .tag:nth-child(2) {
  color: var(--color-accent-secondary-dark);
  background: rgba(123, 168, 155, 0.12);
  border-color: rgba(123, 168, 155, 0.2);
}

.case-item-tags .tag:nth-child(3) {
  color: #8B6F9B;
  background: rgba(184, 157, 201, 0.12);
  border-color: rgba(184, 157, 201, 0.2);
}

/* 結果表示 */
.case-item-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 2px solid var(--color-light-gray);
}

.result-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  overflow: hidden;
  text-align: center;
  background: linear-gradient(135deg, rgba(139, 164, 190, 0.08) 0%, rgba(168, 191, 206, 0.05) 100%);
  border-radius: 16px;
}

.result-item::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, var(--color-accent-primary) 0%, var(--color-accent-primary-light) 100%);
}

.case-item:nth-child(2n) .result-item {
  background: linear-gradient(135deg, rgba(123, 168, 155, 0.08) 0%, rgba(152, 191, 175, 0.05) 100%);
}

.case-item:nth-child(2n) .result-item::before {
  background: linear-gradient(90deg, var(--color-accent-secondary) 0%, #8FB89C 100%);
}

.case-item:nth-child(3n) .result-item {
  background: linear-gradient(135deg, rgba(245, 230, 211, 0.12) 0%, rgba(255, 244, 224, 0.08) 100%);
}

.case-item:nth-child(3n) .result-item::before {
  background: linear-gradient(90deg, var(--color-accent-tertiary) 0%, var(--color-accent-tertiary-light) 100%);
}

.case-item:nth-child(4n) .result-item {
  background: linear-gradient(135deg, rgba(123, 175, 190, 0.08) 0%, rgba(147, 196, 208, 0.05) 100%);
}

.case-item:nth-child(4n) .result-item::before {
  background: linear-gradient(90deg, #7BAFBE 0%, #93C4D0 100%);
}

.case-item:nth-child(5n) .result-item {
  background: linear-gradient(135deg, rgba(184, 157, 201, 0.08) 0%, rgba(201, 179, 217, 0.05) 100%);
}

.case-item:nth-child(5n) .result-item::before {
  background: linear-gradient(90deg, #B89DC9 0%, #C9B3D9 100%);
}

.result-value {
  margin-bottom: 0.75rem;
  font-family: var(--font-secondary);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, #5D7A9B 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}

.result-label {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-dark);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 期間表示 */
.case-item-period {
  padding-top: 1rem;
  margin-top: 1rem;
  font-size: 0.875rem;
  font-style: italic;
  font-weight: 500;
  color: var(--color-dark-gray);
  border-top: 1px solid #F1F5F9;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  /* ページヒーロー */
  .page-hero {
    padding: 8rem 0 4rem;
  }
  .page-hero-description br {
    display: none;
  }
  /* ケースグリッド */
  .cases-grid {
    grid-template-columns: 1fr;
  }
  /* フィルターボタン */
  .filter-buttons {
    gap: 0.75rem;
  }
  .filter-btn {
    padding: 0.6rem 1.25rem;
    font-size: 0.8125rem;
    white-space: nowrap;
  }
  /* ケース詳細 */
  .case-description br {
    display: none;
  }
  .case-item-image {
    height: 260px;
  }
  .case-item-number {
    font-size: 3rem;
  }
  .case-item-meta {
    right: 1.5rem;
    bottom: 1rem;
    left: 1.5rem;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }
  .case-item-content {
    padding: 2rem 1.5rem;
  }
  .case-item-title {
    font-size: 1.25rem;
  }
  .result-value {
    font-size: 2rem;
  }
  .case-item-results {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 480px) {
  .filter-buttons {
    gap: 0.5rem;
  }
  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
  }
}
@media (max-width: 480px) {
  .case-item-number {
    font-size: 3rem;
  }
  .case-item-company,
  .case-item-industry {
    padding: 0.4rem 1rem;
    font-size: 0.7rem;
  }
  /* テキストの改行を最適化 */
  .case-item-title {
    line-height: 1.5;
    word-break: keep-all;
    overflow-wrap: break-word;
  }
  .case-item-description {
    line-height: 1.8;
    word-break: normal;
    overflow-wrap: break-word;
  }
  /* ページヒーローの説明文のbr要素を無効化 */
  .page-hero-description br {
    display: none;
  }
}
/* アニメーション */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.case-item {
  animation: fadeIn 0.6s ease-out;
}