:root {
  --brand-pink: #ED93B1;
  --brand-pink-strong: #D4537E;
  --brand-purple: #CECBF6;
  --brand-purple-strong: #AFA9EC;
  --accent-grad: linear-gradient(135deg, #ED93B1 0%, #AFA9EC 100%);

  --bg: #FFF5F9;
  --surface: #FFFFFF;
  --text: #4A3340;
  --text-strong: #72243E;
  --muted: #B58AA0;

  --line: rgba(212, 83, 126, 0.16);
  --line-soft: rgba(212, 83, 126, 0.10);

  --shadow-soft: 0 8px 24px rgba(212, 83, 126, 0.12);
  --shadow-hover: 0 16px 38px rgba(212, 83, 126, 0.22);

  --card-radius: 18px;
  --pill-radius: 999px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(1100px 560px at 50% -8%, #FCE7F1 0%, rgba(252,231,241,0) 60%),
    radial-gradient(900px 500px at 100% 0%, #EEEAFD 0%, rgba(238,234,253,0) 55%),
    var(--bg);
  background-attachment: fixed;
  min-height: 100vh;
}

/* ---------- Header ---------- */
.site-header {
  text-align: center;
  padding: 56px 20px 40px;
  background: linear-gradient(135deg, #FFF0F6 0%, #F4EEFF 100%);
  border-bottom: 1px solid var(--line-soft);
}
.site-header h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-strong);
}
.site-header p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.5px;
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
  padding: 12px 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.cats {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  flex: 1 1 auto;
  scrollbar-width: none;
}
.cats::-webkit-scrollbar { display: none; }
.cat-pill {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--brand-pink-strong);
  padding: 7px 16px;
  border-radius: var(--pill-radius);
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.cat-pill:hover { border-color: var(--brand-pink); }
.cat-pill.active {
  background: var(--accent-grad);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(212, 83, 126, 0.25);
}
.search-wrap { flex: 0 0 auto; }
.search-wrap input {
  width: 180px;
  max-width: 46vw;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill-radius);
  font-size: 14px;
  outline: none;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.search-wrap input::placeholder { color: var(--muted); }
.search-wrap input:focus {
  border-color: var(--brand-pink);
  box-shadow: 0 0 0 3px rgba(237, 147, 177, 0.18);
}

/* ---------- Tag bar ---------- */
.tagbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 16px 20px 4px;
  max-width: 1200px;
  margin: 0 auto;
}
.tag-chip {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  padding: 4px 14px;
  border-radius: var(--pill-radius);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.tag-chip:hover { color: var(--text); border-color: var(--brand-pink); }
.tag-chip.active {
  background: var(--brand-pink);
  color: #fff;
  border-color: transparent;
}

/* ---------- Album grid ---------- */
.albums {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(172px, 1fr));
  gap: 20px;
  padding: 22px 20px 8px;
  max-width: 1200px;
  margin: 0 auto;
}
.album {
  background: var(--surface);
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
  display: flex;
  flex-direction: column;
}
.album:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.album .cover {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background: linear-gradient(135deg, #FBEAF0 0%, #EEEAFD 100%);
  overflow: hidden;
}
.album .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}
.album:hover .cover img { transform: scale(1.06); }
.album .cover .count {
  position: absolute;
  right: 10px;
  bottom: 10px;
  background: rgba(74, 51, 64, 0.55);
  color: #fff;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: var(--pill-radius);
  backdrop-filter: blur(4px);
}
.album .info { padding: 13px 15px 15px; }
.album .info strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-strong);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.album .info .cat {
  display: inline-block;
  margin-top: 7px;
  font-size: 12px;
  color: var(--brand-pink-strong);
  background: rgba(237, 147, 177, 0.16);
  padding: 2px 10px;
  border-radius: 8px;
}

/* ---------- Empty / loading ---------- */
.empty {
  text-align: center;
  color: var(--muted);
  padding: 60px 20px;
  font-size: 15px;
}

/* ---------- Album detail overlay ---------- */
.album-detail {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 50;
  overflow-y: auto;
  animation: fade-in 0.2s ease;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.detail-head {
  position: sticky;
  top: 0;
  z-index: 2;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
  padding: 16px 20px;
}
.detail-head .back {
  border: none;
  background: transparent;
  color: var(--brand-pink-strong);
  font-size: 15px;
  cursor: pointer;
  padding: 4px 0;
}
.detail-meta { margin-top: 6px; }
.detail-meta h2 { font-size: 20px; font-weight: 700; color: var(--text-strong); }
.detail-cat {
  display: inline-block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--brand-pink-strong);
  background: rgba(237, 147, 177, 0.16);
  padding: 2px 10px;
  border-radius: 8px;
}
.detail-tags { margin-top: 10px; display: flex; gap: 6px; flex-wrap: wrap; }
.detail-tags .tag-chip { font-size: 12px; }
.detail-desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 720px;
}

.detail-grid {
  columns: 2 220px;
  column-gap: 14px;
  padding: 18px 20px 44px;
  max-width: 1100px;
  margin: 0 auto;
}
.detail-grid img {
  width: 100%;
  margin: 0 0 14px;
  border-radius: 14px;
  display: block;
  background: linear-gradient(135deg, #FBEAF0 0%, #EEEAFD 100%);
  cursor: zoom-in;
  break-inside: avoid;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease;
}
.detail-grid img:hover { transform: scale(1.015); }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(38, 28, 34, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
  overscroll-behavior: contain; /* 阻止滚动橡皮筋连锁到页面 */
  touch-action: none;            /* 横向滑动交给 JS，不被浏览器"返回"手势劫持 */
}
.lightbox.hidden { display: none; }

/* 灯箱打开时锁住背景滚动，避免移动端滑动穿透 */
body.lb-open { overflow: hidden; }
.lightbox img {
  max-width: 92vw;
  max-height: 86vh;
  border-radius: 12px;
  box-shadow: 0 12px 50px rgba(0, 0, 0, 0.5);
}
.lightbox .close {
  position: absolute;
  top: 20px;
  right: 28px;
  font-size: 36px;
  color: #fff;
  cursor: pointer;
  line-height: 1;
  opacity: 0.85;
  z-index: 2;
}
.lightbox .close:hover { opacity: 1; }

/* 左右切换按钮 */
.lightbox .lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 44px;
  color: #fff;
  cursor: pointer;
  line-height: 1;
  padding: 12px 18px;
  user-select: none;
  opacity: 0.8;
  transition: opacity 0.18s ease, background 0.18s ease;
  border-radius: 14px;
  z-index: 2;
}
.lightbox .lb-nav:hover { opacity: 1; background: rgba(255, 255, 255, 0.14); }
.lightbox .lb-prev { left: 12px; }
.lightbox .lb-next { right: 12px; }
.lightbox .lb-nav.disabled { opacity: 0.25; pointer-events: none; }

/* 计数 */
.lightbox .lb-counter {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 14px;
  letter-spacing: 1px;
  background: rgba(0, 0, 0, 0.4);
  padding: 4px 14px;
  border-radius: var(--pill-radius);
  z-index: 2;
}

.site-footer {
  text-align: center;
  padding: 30px 20px 44px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 20px;
}

.hidden { display: none !important; }