/* ============================================
   子页面通用样式 — Apple 极简
   ============================================ */

/* ── 页头 ── */
.page-header {
  min-height: 40vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-inline: var(--space-6);
  padding-top: var(--nav-height);
  position: relative;
}

.page-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 1px;
  background: rgba(255,255,255,0.1);
}

.page-header__label { margin-bottom: var(--space-3); }

.page-header h1 {
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.page-header__desc { max-width: 400px; }


/* ── 画廊网格 (作品页) ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  padding-inline: var(--space-6);
  max-width: 1200px;
  margin-inline: auto;
}

.gallery-grid__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: pointer;
}

.gallery-grid__item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  transition: transform var(--duration-slow) var(--ease-apple);
}

.gallery-grid__item:hover img { transform: scale(1.05); }

.gallery-grid__overlay {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 45%);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-apple);
  display: flex;
  align-items: flex-end;
  padding: var(--space-5);
}

.gallery-grid__item:hover .gallery-grid__overlay { opacity: 1; }

.gallery-grid__title {
  font-size: var(--text-small);
  font-weight: 500;
}

.gallery-grid__detail {
  font-size: var(--text-caption);
  color: var(--color-text-tertiary);
  margin-top: 2px;
  letter-spacing: var(--tracking-wide);
}

.gallery-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-10) 0;
  font-size: var(--text-small);
}

/* ── 分类筛选栏 ── */
.filter-bar-wrapper {
  padding-inline: var(--space-6);
  padding-bottom: var(--space-7);
  max-width: 1200px;
  margin-inline: auto;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.filter-btn {
  padding: 6px 18px;
  border-radius: 100px;
  font-size: var(--text-caption);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-apple),
              background var(--duration-fast) var(--ease-apple),
              border-color var(--duration-fast) var(--ease-apple);
}

.filter-btn:hover {
  color: var(--color-text);
  background: var(--color-glass);
}

.filter-btn--active {
  color: var(--color-text);
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.12);
}


/* ── 专题网格 (专题页) ── */
.collections-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  padding-inline: var(--space-6);
  max-width: 1200px;
  margin-inline: auto;
}

.collections-grid__item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  cursor: pointer;
}

.collections-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  transition: transform var(--duration-slow) var(--ease-apple);
}

.collections-grid__item:hover img { transform: scale(1.06); }

.collections-grid__info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-7) var(--space-6);
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.collections-grid__title {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  margin-bottom: 4px;
}

.collections-grid__count {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}


/* ── About 页 ── */
.about-page {
  padding-inline: var(--space-6);
  padding-top: calc(var(--nav-height) + var(--space-8));
}

.about-page__hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: center;
  max-width: 1100px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.about-page__image {
  aspect-ratio: 3/4;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.about-page__intro h2 {
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.about-page__intro p {
  margin-bottom: var(--space-4);
  max-width: 440px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.about-page__section {
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-9);
}

.about-page__section h3 {
  font-weight: 600;
  margin-bottom: var(--space-5);
}

/* 设备 */
.gear-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.gear-item {
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--duration-fast) var(--ease-apple);
}

.gear-item:hover { border-color: var(--color-border-hover); }

.gear-item__name {
  font-weight: 600;
  font-size: var(--text-small);
  margin-bottom: 2px;
}

.gear-item__desc {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
}


/* ── Social 页 ── */
.social-page {
  padding-inline: var(--space-6);
  padding-top: calc(var(--nav-height) + var(--space-8));
}

.social-page__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  max-width: 900px;
  margin-inline: auto;
}

.social-page-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-glass);
  transition: transform var(--duration-base) var(--ease-spring),
              border-color var(--duration-base) var(--ease-apple),
              background var(--duration-base) var(--ease-apple),
              box-shadow var(--duration-base) var(--ease-apple);
}

.social-page-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-hover);
  background: var(--color-glass-hover);
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.5);
}

.social-page-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
}

.social-page-card__platform { margin-bottom: var(--space-2); }

.social-page-card__name {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-2);
}

.social-page-card__desc {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
  line-height: 1.5;
}

.social-page-card__qrcode {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-sm);
  object-fit: contain;
  background: #fff;
  padding: 6px;
}

/* ── 专题详情弹窗 ── */
.collection-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  overflow-y: auto;
  padding: var(--space-9) var(--space-6) var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-apple);
}

.collection-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.collection-overlay__close {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: 1000;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast) var(--ease-apple);
}

.collection-overlay__close:hover {
  background: rgba(255,255,255,0.18);
}

.collection-overlay__header {
  text-align: center;
  margin-bottom: var(--space-7);
}

.collection-overlay__header h2 {
  margin: var(--space-2) 0;
}

.collection-overlay__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  max-width: 1200px;
  margin-inline: auto;
}

.overlay-photo {
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.overlay-photo img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-md);
  display: block;
}

.overlay-photo__title {
  font-size: var(--text-small);
  font-weight: 500;
  margin-top: var(--space-2);
}

.overlay-photo__meta {
  margin-top: 2px;
}

@media (max-width: 1023px) {
  .collection-overlay__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── AI 页面 ── */
.ai-section {
  padding-inline: var(--space-6);
}

.ai-section h3 {
  max-width: 1000px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
  font-weight: 600;
}

.ai-section h3 .text-caption {
  display: inline;
  font-size: var(--text-caption);
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  max-width: 1000px;
  margin-inline: auto;
}

.ai-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--duration-fast) var(--ease-apple);
}

.ai-card:hover {
  border-color: var(--color-border-hover);
}

.ai-card__image {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--color-surface);
}

.ai-card__video {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--color-surface);
}

.ai-card__title {
  padding: var(--space-4) var(--space-4) var(--space-1);
  font-size: var(--text-small);
}

.ai-card__desc {
  padding: 0 var(--space-4) var(--space-4);
}

.ai-card--placeholder .ai-card__image,
.ai-card--placeholder .ai-card__video {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-card--placeholder .ai-card__image::after,
.ai-card--placeholder .ai-card__video::after {
  content: '✦';
  font-size: 1.5rem;
  color: var(--color-text-tertiary);
  opacity: 0.3;
}

/* 音频列表 */
.ai-playlist {
  max-width: 700px;
  margin-inline: auto;
}

.ai-track {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--duration-fast) var(--ease-apple);
}

.ai-track:hover {
  border-color: var(--color-border-hover);
}

.ai-track__num {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  min-width: 40px;
}

.ai-track__info p:first-child {
  font-size: var(--text-small);
}

@media (max-width: 1023px) {
  .ai-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .ai-grid {
    grid-template-columns: 1fr;
  }
}

/* ── 大图查看器 ── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1100;
  background: rgba(0,0,0,0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-apple);
}

.lightbox.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.lightbox__close {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: 1101;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast) var(--ease-apple);
}

.lightbox__close:hover {
  background: rgba(255,255,255,0.18);
}

.lightbox__caption {
  margin-top: var(--space-4);
  text-align: center;
  max-width: 600px;
}

@media (max-width: 767px) {
  .collection-overlay__grid {
    grid-template-columns: 1fr;
  }
  .collection-overlay {
    padding: var(--space-7) var(--space-4) var(--space-6);
  }
  .lightbox {
    padding: var(--space-5);
  }
  .lightbox img {
    max-width: 96vw;
    max-height: 70vh;
  }
}