/* ============================================
   案例展示页 — cases.css
   与主站 style.css 主题变量共享
   ============================================ */

/* === Hero Banner === */
.cases-hero {
  padding: 80px 0 60px;
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  position: relative;
  overflow: hidden;
}
.cases-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(82,196,26,0.06) 0%, transparent 60%);
  animation: heroGlow 8s ease-in-out infinite;
}
@keyframes heroGlow {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}
.cases-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.cases-hero p {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.cases-hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}
.cases-hero-stat {
  text-align: center;
}
.cases-hero-stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}
.cases-hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

/* === 筛选栏 === */
.cases-filter-bar {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}
.cases-filter-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.cases-filter-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-right: 4px;
}
.cases-filter-btn {
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s;
}
.cases-filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.cases-filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* === 案例网格 === */
.cases-section {
  padding-bottom: 80px;
}
.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* 案例卡片（升级版） */
.cases-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}
.cases-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated);
  border-color: var(--color-accent);
}
.cases-card-image {
  height: 220px;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
  overflow: hidden;
}
.cases-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.cases-card:hover .cases-card-image img {
  transform: scale(1.05);
}
.cases-card-image .img-fallback {
  font-size: 3.5rem;
  opacity: 0.3;
}
.cases-card-image .cases-card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
}
.cases-card-body {
  padding: 20px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.cases-card-body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-main);
  line-height: 1.4;
}
.cases-card-body > p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}
.cases-card-stats {
  display: flex;
  gap: 24px;
  margin-bottom: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.cases-card-stat {
  text-align: center;
}
.cases-card-stat-val {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
}
.cases-card-stat-lbl {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 2px;
}
.cases-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

/* === 详情弹窗（全屏） === */
.cases-detail-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(12px);
  z-index: 2000;
  padding: 40px 20px;
  overflow-y: auto;
  align-items: flex-start;
  justify-content: center;
}
.cases-detail-overlay.open {
  display: flex;
}
.cases-detail-modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  overflow: hidden;
  animation: modalIn 0.3s ease;
  position: relative;
}
@keyframes modalIn {
  from { transform: translateY(40px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.cases-detail-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  border: none;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s;
  z-index: 10;
  backdrop-filter: blur(8px);
}
.cases-detail-close:hover {
  background: rgba(255,77,79,0.8);
}
.cases-detail-image {
  height: 320px;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
}
.cases-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cases-detail-image .img-fallback {
  font-size: 5rem;
  opacity: 0.3;
}
.cases-detail-image .cases-detail-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 6px 14px;
  border-radius: 14px;
  font-size: 0.8rem;
  backdrop-filter: blur(8px);
}
.cases-detail-body {
  padding: 32px;
}
.cases-detail-body h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.cases-detail-body .detail-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}
.cases-detail-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
}
.cases-detail-stat {
  text-align: center;
}
.cases-detail-stat-val {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent);
}
.cases-detail-stat-lbl {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 4px;
}
.cases-detail-body .detail-cta {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

/* === 设计方案说明（Markdown 渲染） === */
.cases-detail-section {
  margin: 24px 0;
  padding: 20px;
  background: var(--bg-elevated, rgba(255,255,255,0.03));
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}
.section-title-inline {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 8px;
}
.design-plan-content {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-secondary);
}
.design-plan-content .md-h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 18px 0 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.design-plan-content .md-h3:first-child {
  margin-top: 0;
}
.design-plan-content .md-p {
  margin: 6px 0;
}
.design-plan-content .md-ul {
  margin: 8px 0;
  padding-left: 20px;
  list-style: none;
}
.design-plan-content .md-li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 4px;
  line-height: 1.7;
}
.design-plan-content .md-li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}
.design-plan-content md-li-num {
  padding-left: 4px;
  margin-bottom: 4px;
  list-style: decimal;
}
.design-plan-content strong {
  color: var(--text-main);
}
.body.light-mode .design-plan-content .md-h3 {
  border-bottom-color: #e8e8e8;
}

/* === 多图轮播（原画廊改轮播） === */
.cases-detail-gallery {
  margin: 24px 0;
  padding: 0;
}
.gallery-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 轮播容器 */
.gallery-carousel {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-elevated, rgba(255,255,255,0.03));
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.carousel-track {
  flex: 1;
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  min-height: 180px;
}

.carousel-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.carousel-slide.active {
  opacity: 1;
  pointer-events: auto;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
  display: block;
}

.carousel-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  width: 100%;
  height: 100%;
  color: var(--text-dim);
  background: var(--bg-elevated, rgba(255,255,255,0.03));
}

/* 左右箭头按钮 */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, background 0.2s;
}

.gallery-carousel:hover .carousel-btn {
  opacity: 1;
  pointer-events: auto;
}

.carousel-btn:hover {
  background: rgba(0,0,0,0.75);
}

.carousel-prev { left: 8px; }
.carousel-next { right: 8px; }

/* 圆点指示器 */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 10px 0 4px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: all 0.25s;
}

.carousel-dot.active {
  background: var(--color-accent);
  width: 22px;
  border-radius: 5px;
}

.carousel-dot:hover {
  background: var(--text-dim);
}

/* === Lightbox 大图查看（支持左右导航） === */
.cases-lightbox {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.92);
  z-index: 5000;
  align-items: center;
  justify-content: center;
  padding: 40px;
  cursor: zoom-out;
}
.cases-lightbox.open {
  display: flex;
  animation: lbFadeIn 0.3s ease;
}
@keyframes lbFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.cases-lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s;
  backdrop-filter: blur(8px);
  z-index: 10;
}
.cases-lightbox-close:hover {
  background: rgba(255,77,79,0.7);
}

/* Lightbox 导航按钮 */
.cases-lightbox .lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.cases-lightbox .lb-nav:hover { background: rgba(255,255,255,0.25); }
.cases-lightbox .lb-prev { left: 20px; }
.cases-lightbox .lb-next { right: 20px; }

.cases-lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.cases-lightbox-content img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}

/* Lightbox 计数器 */
.lb-counter {
  margin-top: 12px;
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

/* === 联系表单弹窗（复用主站样式） === */
.cases-contact-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--overlay);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.cases-contact-overlay.open { display: flex; }
.cases-contact-modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  padding: 32px;
  position: relative;
  animation: modalIn 0.3s ease;
}
.cases-contact-modal .modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.5rem;
  cursor: pointer;
}
.cases-contact-modal h3 {
  margin-bottom: 20px;
  font-size: 1.2rem;
}

/* === 空状态 === */
.cases-empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-dim);
}
.cases-empty .empty-icon { font-size: 4rem; margin-bottom: 16px; opacity: 0.4; }

/* === 响应式 === */
@media (min-width: 640px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .cases-grid { grid-template-columns: repeat(3, 1fr); }
  .cases-card-image { height: 200px; }
}
@media (min-width: 1200px) {
  .cases-hero { padding: 100px 0 70px; }
  .cases-card-image { height: 220px; }
}
@media (max-width: 768px) {
  .cases-detail-modal { border-radius: var(--radius-md); }
  .cases-detail-image { height: 200px; }
  .cases-detail-body { padding: 20px; }
  .cases-hero-stats { gap: 24px; }
  .cases-hero-stat-value { font-size: 1.5rem; }
  .cases-card-stats { gap: 16px; }
  .carousel-track { min-height: 140px; }
  .carousel-btn { width: 30px; height: 30px; font-size: 1.2rem; }
  .cases-lightbox { padding: 20px; }
  .cases-lightbox .lb-nav { width: 36px; height: 36px; font-size: 1.6rem; }
  .cases-lightbox .lb-prev { left: 8px; }
  .cases-lightbox .lb-next { right: 8px; }
}