/* Lumi — 公开端样式
 * 设计: 深色 + 米白 + 居中卡片, 移动端友好
 */

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

:root {
  --bg:        #0e1218;
  --bg-soft:   #161b24;
  --bg-card:   #1d242f;
  --text:      #e6ebf2;
  --text-soft: #8d99ab;
  --border:    #2a3340;
  --accent:    #d4b58a;  /* 古铜金, 跟展览馆风格统一 */
  --accent-2:  #c9a26b;
  --danger:    #e07a6a;
  --radius:    10px;
  --shadow:    0 6px 24px rgba(0, 0, 0, .4);
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---------------- 顶栏 ---------------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(14, 18, 24, .92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar .brand {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent);
}
.topbar .meta {
  font-size: 13px;
  color: var(--text-soft);
  display: flex;
  gap: 16px;
  align-items: center;
}
.topbar .meta a {
  color: var(--text-soft);
  border-bottom: 1px dashed transparent;
  padding-bottom: 1px;
}
.topbar .meta a:hover { color: var(--text); border-bottom-color: var(--text-soft); }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px;
}

/* ---------------- 密码门 ---------------- */
.gate {
  max-width: 420px;
  margin: 100px auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  box-shadow: var(--shadow);
  text-align: center;
}
.gate h1 {
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.gate p {
  color: var(--text-soft);
  font-size: 13px;
  margin-bottom: 24px;
}
.gate input[type=password] {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.gate input[type=password]:focus { border-color: var(--accent); }
.gate button {
  width: 100%;
  margin-top: 16px;
  padding: 12px 14px;
  background: var(--accent);
  color: #1a1410;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s;
}
.gate button:hover { background: var(--accent-2); }
.gate .err {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  min-height: 18px;
}

/* ---------------- 相册墙 ---------------- */
.albums {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.album-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.album-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.album-card .cover {
  aspect-ratio: 4/3;
  width: 100%;
  background: #0a0d12 center/cover no-repeat;
  position: relative;
}
.album-card .cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,.5));
}
.album-card .body {
  padding: 16px;
}
.album-card .name {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 4px;
}
.album-card .desc {
  color: var(--text-soft);
  font-size: 13px;
  min-height: 18px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.album-card .stats {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-soft);
}

.empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-soft);
}
.empty h2 { font-size: 18px; margin-bottom: 8px; color: var(--text); }

/* ---------------- 相册详情 / 媒体瀑布流 ---------------- */
.album-head {
  margin-bottom: 24px;
}
.album-head h1 {
  font-size: 28px;
  font-weight: 500;
  margin-bottom: 6px;
}
.album-head .desc {
  color: var(--text-soft);
  font-size: 14px;
}
.album-head .stats {
  color: var(--text-soft);
  font-size: 12px;
  margin-top: 8px;
}
.album-head .back {
  display: inline-block;
  font-size: 13px;
  color: var(--text-soft);
  margin-bottom: 16px;
  border-bottom: 1px dashed var(--text-soft);
}
.album-head .back:hover { color: var(--text); }

.masonry {
  column-count: 4;
  column-gap: 14px;
}
@media (max-width: 1100px) { .masonry { column-count: 3; } }
@media (max-width:  760px) { .masonry { column-count: 2; } }
@media (max-width:  460px) { .masonry { column-count: 1; } }

.m-item {
  break-inside: avoid;
  margin-bottom: 14px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  position: relative;
  cursor: zoom-in;
  transition: transform .15s, border-color .15s;
}
.m-item:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.m-item img, .m-item video {
  width: 100%;
  display: block;
  background: #0a0d12;
}
.m-item .badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0, 0, 0, .65);
  color: #fff;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.m-item .badge.video::before { content: '▶'; }
.m-item .badge.duration::after { content: ''; }

/* ---------------- Lightbox ---------------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .92);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.lightbox.show { display: flex; }
.lightbox .stage {
  max-width: 95vw;
  max-height: 95vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox img, .lightbox video {
  max-width: 95vw;
  max-height: 95vh;
  object-fit: contain;
  background: #000;
  border-radius: 6px;
  box-shadow: 0 10px 60px rgba(0, 0, 0, .8);
}
.lightbox .close, .lightbox .prev, .lightbox .next {
  position: absolute;
  background: rgba(0, 0, 0, .5);
  color: #fff;
  border: none;
  font-size: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox .close { top: 24px; right: 24px; }
.lightbox .prev  { left: 24px;  top: 50%; transform: translateY(-50%); }
.lightbox .next  { right: 24px; top: 50%; transform: translateY(-50%); }
.lightbox .info {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: #ccc;
  font-size: 12px;
  background: rgba(0, 0, 0, .5);
  padding: 6px 14px;
  border-radius: 20px;
}

.loading {
  text-align: center;
  color: var(--text-soft);
  padding: 40px 0;
  font-size: 13px;
}

/* ---------------- 主页工具栏 (搜索 + 统计) ---------------- */
.home-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}
.home-toolbar #home-search {
  flex: 1;
  max-width: 360px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.home-toolbar #home-search:focus { border-color: var(--accent); }
.albums-stats {
  color: var(--text-soft);
  font-size: 12px;
}

/* ---------------- 分类筛选 ---------------- */
.cat-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.cat-chip {
  background: var(--bg-card);
  color: var(--text-soft);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
}
.cat-chip:hover {
  color: var(--text);
  border-color: var(--border-2);
}
.cat-chip.active {
  background: var(--accent);
  color: #1a1410;
  border-color: var(--accent);
  font-weight: 500;
}

/* ---------------- 加载更多 ---------------- */
.load-more {
  text-align: center;
  margin: 24px 0;
}
.load-more .btn-ghost {
  background: transparent;
  color: var(--text-soft);
  border: 1px solid var(--border-2);
  padding: 10px 28px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all .15s;
}
.load-more .btn-ghost:hover {
  background: var(--bg-soft);
  color: var(--text);
  border-color: var(--accent);
}
.load-more .btn-ghost:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.media-stats {
  color: var(--text-soft);
  font-size: 12px;
  margin-bottom: 12px;
}