/* ============================================
   心空艺术 · 子页共享样式
   继承主站禅意风格，适配多页导航
   ============================================ */

/* 复用主站 CSS 变量 */
@import url('styles.css');

/* ==================== 子页顶部横幅 ==================== */
.page-banner {
  position: relative;
  z-index: 1;
  min-height: 45vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 80px;
  background: linear-gradient(
    180deg,
    rgba(15, 21, 32, 0.6) 0%,
    rgba(26, 35, 50, 0.8) 50%,
    rgba(15, 21, 32, 0.9) 100%
  );
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at 50% 30%,
    rgba(123, 104, 238, 0.08) 0%,
    transparent 60%
  );
  pointer-events: none;
}

.banner-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  display: block;
  animation: floatIcon 3s ease-in-out infinite;
}

@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.page-banner h1 {
  font-size: 2.5rem;
  font-weight: 200;
  letter-spacing: 8px;
  color: var(--starlight-silver);
  margin-bottom: 12px;
  text-shadow: 0 0 30px rgba(232, 244, 255, 0.12);
}

.page-banner .banner-subtitle {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 3px;
  color: var(--cloud-gray);
}

.breadcrumb {
  position: absolute;
  top: calc(var(--nav-height) + 16px);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--cloud-gray-dark);
  letter-spacing: 1px;
  z-index: 10;
}

.breadcrumb a {
  color: var(--cloud-gray);
  text-decoration: none;
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: var(--heartlight-gold);
}

.breadcrumb .separator {
  color: var(--cloud-gray-dark);
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--starlight-silver);
}

/* ==================== 子页内容区 ==================== */

/* 页面 3D 翻转入场动画 */
@keyframes page-flip-in {
  0% {
    opacity: 0;
    transform: perspective(1000px) rotateX(-8deg) translateY(30px);
  }
  100% {
    opacity: 1;
    transform: perspective(1000px) rotateX(0deg) translateY(0);
  }
}

.page-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px 40px;
  animation: page-flip-in 0.8s ease-out;
}

/* 文章卡片 */
.article-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(232, 244, 255, 0.08);
  border-radius: var(--border-radius);
  padding: 40px 36px;
  margin-bottom: 32px;
  transition: all 0.3s ease;
}

.article-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 215, 0, 0.12);
}

.article-card h2 {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 4px;
  color: var(--heartlight-gold);
  margin-bottom: 16px;
}

.article-card h3 {
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--starlight-silver);
  margin-top: 28px;
  margin-bottom: 12px;
}

.article-card p {
  font-size: 0.95rem;
  color: var(--cloud-gray-light);
  font-weight: 300;
  line-height: 1.9;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.article-card blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 2px solid var(--heartlight-gold-dark);
  background: rgba(255, 215, 0, 0.04);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  font-style: italic;
  color: var(--heartlight-gold-soft);
  letter-spacing: 1px;
  line-height: 1.8;
}

.article-card ul, .article-card ol {
  padding-left: 20px;
  margin-bottom: 16px;
}

.article-card li {
  font-size: 0.95rem;
  color: var(--cloud-gray-light);
  font-weight: 300;
  line-height: 1.8;
  margin-bottom: 8px;
}

/* 图片占位 */
.article-image {
  width: 100%;
  border-radius: var(--border-radius);
  margin: 24px 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(232, 244, 255, 0.06);
}

.article-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  filter: brightness(0.9) saturate(0.85);
}

.article-image .image-caption {
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--cloud-gray-dark);
  text-align: center;
  letter-spacing: 1px;
  font-style: italic;
}

/* 网格卡片组 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.card-grid .card-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(232, 244, 255, 0.06);
  border-radius: var(--border-radius);
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.1s ease, box-shadow 0.4s ease, border-color 0.4s ease;
  cursor: pointer;
  text-decoration: none;
  display: block;
  transform-style: preserve-3d;
  will-change: transform;
}

.card-grid .card-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(123, 104, 238, 0.25);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(123, 104, 238, 0.08);
}

.card-item .card-item-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.card-item h4 {
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--starlight-silver);
  margin-bottom: 8px;
}

.card-item p {
  font-size: 0.85rem;
  color: var(--cloud-gray);
  font-weight: 300;
  letter-spacing: 0.5px;
}

/* ==================== 3D 旋转画作展台 ==================== */
.carousel-3d-container {
  position: relative;
  width: 100%;
  max-width: 700px;
  margin: 220px auto 30px;
  perspective: 1200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  touch-action: pan-y;
}

.carousel-3d {
  position: relative;
  width: 190px;
  height: 280px;
  margin: 0 auto;
  transform-style: preserve-3d;
  transition: transform 0.5s ease-out;
  touch-action: pan-y;
}

.carousel-3d-item {
  position: absolute;
  width: 170px;
  height: 220px;
  border-radius: var(--border-radius);
  overflow: hidden;
  text-decoration: none;
  transition: filter 0.4s ease, box-shadow 0.4s ease;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(232, 244, 255, 0.08);
  cursor: pointer;
  touch-action: pan-y;
}

.carousel-3d-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.9) saturate(0.9);
  transition: filter 0.4s ease, transform 0.4s ease;
}

.carousel-3d-item:hover img {
  filter: brightness(1.1) saturate(1.1);
  transform: scale(1.05);
}

.carousel-item-title {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 18px 12px 10px;
  background: linear-gradient(to top, rgba(15, 21, 32, 0.92) 0%, transparent 100%);
  color: var(--heartlight-gold);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 2px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.carousel-3d-item:hover .carousel-item-title {
  opacity: 1;
}

/* 控制按钮 */
.carousel-controls {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  margin-bottom: 16px;
  align-items: center;
  justify-content: center;
}

.carousel-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(232, 244, 255, 0.15);
  background: rgba(26, 35, 50, 0.8);
  color: var(--starlight-silver);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}

.carousel-btn:hover {
  background: rgba(123, 104, 238, 0.3);
  border-color: var(--violet-dream-soft);
  color: var(--violet-dream-soft);
  transform: scale(1.1);
}

.carousel-btn.carousel-pause {
  width: 40px;
  height: 40px;
  font-size: 1rem;
}

@media (max-width: 768px) {
  .carousel-3d-container {
    margin: 200px auto 20px;
  }
  .carousel-3d {
    width: 140px;
    height: 190px;
  }
  .carousel-3d-item {
    width: 120px;
    height: 155px;
  }
  .carousel-btn {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  .carousel-controls {
    margin-top: 40px;
  }
}

/* 导航回首页按钮 */
.back-nav {
  display: flex;
  justify-content: center;
  margin-top: 48px;
  gap: 16px;
}

/* 时间线样式 */
.timeline {
  position: relative;
  padding-left: 32px;
  margin: 24px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    180deg,
    var(--heartlight-gold-dark) 0%,
    rgba(123, 104, 238, 0.3) 50%,
    transparent 100%
  );
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--heartlight-gold);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.3);
}

.timeline-item h4 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--heartlight-gold);
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 0.9rem;
  color: var(--cloud-gray-light);
  font-weight: 300;
  line-height: 1.7;
}

/* FAQ 样式 */
.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(232, 244, 255, 0.06);
  border-radius: var(--border-radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.04);
}

.faq-question h4 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--starlight-silver);
}

.faq-question .faq-toggle {
  font-size: 1.2rem;
  color: var(--heartlight-gold);
  transition: transform 0.3s ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer.open {
  max-height: 500px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--cloud-gray-light);
  font-weight: 300;
  line-height: 1.8;
}

/* ==================== 推荐导航 ==================== */
.related-nav {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(232, 244, 255, 0.06);
}

.related-nav h3 {
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 3px;
  color: var(--cloud-gray);
  margin-bottom: 16px;
  text-align: center;
}

.related-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-link {
  display: inline-block;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(232, 244, 255, 0.06);
  border-radius: var(--border-radius);
  color: var(--cloud-gray);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.related-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 215, 0, 0.15);
  transform: translateY(-2px);
  color: var(--starlight-silver);
}

/* ==================== 推荐导航 ==================== */
.related-nav {
  margin-top: 40px;
  padding: 32px 0 0;
  border-top: 1px solid rgba(232, 244, 255, 0.06);
}

.related-nav h3 {
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 3px;
  color: var(--cloud-gray);
  margin-bottom: 20px;
  text-align: center;
}

.related-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(232, 244, 255, 0.06);
  border-radius: var(--border-radius);
  color: var(--cloud-gray);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.related-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 215, 0, 0.15);
  transform: translateY(-2px);
  color: var(--starlight-silver);
}

/* 响应式 */
@media (max-width: 768px) {
  .page-banner h1 {
    font-size: 1.8rem;
    letter-spacing: 4px;
  }

  .page-banner {
    min-height: 35vh;
    padding: 120px 20px 60px;
  }

  .page-content {
    padding: 60px 20px 80px;
  }

  .article-card {
    padding: 28px 20px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .breadcrumb {
    font-size: 0.75rem;
    top: calc(var(--nav-height) + 10px);
  }
}