/* ============================================
   成功案例页专用样式 - cases.html
   ============================================ */

/* ---------- 筛选标签 ---------- */
.cases-filter-section {
  padding: var(--space-xl) 0;
  background: var(--color-white);
}

.cases-filter {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.cases-filter__btn {
  padding: 10px 24px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  background: transparent;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.cases-filter__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
}

.cases-filter__btn.active {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-white);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

/* ---------- 案例网格 ---------- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

/* 案例卡片 */
.case-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-normal);
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

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

/* 卡片图片 */
.case-card__image {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.case-card__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.case-card__image-placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.15;
}

/* 不同案例的图片背景色 */
.case-card__image-placeholder--1 { background: linear-gradient(135deg, #1e3a5f, #0f2744); }
.case-card__image-placeholder--2 { background: linear-gradient(135deg, #1a365d, #0d1b3e); }
.case-card__image-placeholder--3 { background: linear-gradient(135deg, #7c3aed, #4c1d95); }
.case-card__image-placeholder--4 { background: linear-gradient(135deg, #0369a1, #075985); }
.case-card__image-placeholder--5 { background: linear-gradient(135deg, #b45309, #92400e); }
.case-card__image-placeholder--6 { background: linear-gradient(135deg, #be123c, #881337); }

/* 标签 */
.case-card__tag {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 5px 14px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-white);
  background: rgba(10, 22, 40, 0.75);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

/* 卡片内容 */
.case-card__body {
  padding: var(--space-xl);
}

.case-card__body h3 {
  font-size: var(--text-lg);
  line-height: 1.45;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-card__body p {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 元信息 */
.case-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-gray-100);
}

.case-card__industry,
.case-card__result {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-gray-500);
}

.case-card__result {
  color: var(--color-accent-dark);
}

/* 空状态 */
.cases-empty {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
  grid-column: span 2;
}

.cases-empty p {
  margin-top: var(--space-md);
  font-size: var(--text-lg);
  color: var(--color-gray-400);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cases-grid {
    grid-template-columns: 1fr;
  }

  .cases-empty {
    grid-column: span 1;
  }
}

@media (max-width: 480px) {
  .cases-filter {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--space-sm);
    -webkit-overflow-scrolling: touch;
  }

  .cases-filter__btn {
    white-space: nowrap;
    flex-shrink: 0;
  }

  .case-card__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }
}