/* ==========================================================================
   通天路 · 发现页（/discover）2026-09-17 — 页面级样式
   仅 discover.html {% block extra_head %} 引用（home-redesign.css 之后）。
   复用 home-redesign.css 的 hero token / .home-tabs / .home-chips / .home-rail
   语言；本文件只写发现页增量：
     1) hero 文案变体          2) 工具条（tabs + 内容形式切换）
     3) 列表视图（SSR class）  4) 卡片统计行（♡ / 💬 / ⭐）
     5) 右栏增量（查看更多 / 每日一句 / 可能感兴趣的人）
   约束：颜色全走主题变量（--brand-* / --card / --border / --muted / --ring）；
   零外链图片 / 字体 / CDN；动效 150–200ms；尊重 prefers-reduced-motion。
   参考：docs/qa/discover-circles-20260917/README.md
   ========================================================================== */

/* ---- 1. Hero 文案变体 ---------------------------------------------------- */
.discover-hero__desc {
  margin: 0.5rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  font-weight: 400;
  color: color-mix(in srgb, var(--hero-ink) 78%, transparent);
  overflow-wrap: anywhere;
}

@media (min-width: 768px) {
  .discover-hero__desc {
    font-size: 0.875rem;
  }
}

/* ---- 2. 工具条：tabs + 内容形式 ----------------------------------------- */
.discover-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  min-width: 0;
  padding: 0.5rem 0.625rem;
  border-radius: 1rem;
  border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
  background: var(--card);
}

@media (min-width: 640px) {
  .discover-toolbar {
    padding: 0.5rem 0.75rem;
  }
}

/* 参考图：白色工具条压在 hero 下缘（≥768 才叠，移动端不叠避免拥挤） */
@media (min-width: 768px) {
  .discover-toolbar {
    position: relative;
    z-index: 2;
    margin-top: -2.5rem;
    box-shadow: 0 12px 32px -24px rgb(42 33 24 / 0.5);
  }
}

.discover-view {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  flex: none;
}

.discover-view__label {
  margin-right: 0.125rem;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--muted-foreground);
}

.discover-view__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  color: var(--muted-foreground);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.discover-view__btn:hover {
  color: var(--foreground);
  background: color-mix(in srgb, var(--muted) 50%, transparent);
}

.discover-view__btn.is-active {
  color: var(--primary-foreground);
  background: var(--primary);
}

.discover-view__btn:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* ---- 3. 列表视图（SSR class：.discover-feed--list；无 JS 参与） ----------
   JS 瀑布引擎仍会写 inline position/height —— 用 !important 覆盖回文档流，
   列表视图 = 单列；≥640 有封面卡改右图左文紧凑行。 */
.discover-feed--list {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) !important;
  gap: 0.75rem;
  min-height: 0;
  height: auto !important;
}

.discover-feed--list .home-waterfall-card {
  position: static !important;
  left: auto !important;
  top: auto !important;
  width: 100% !important;
  height: auto !important;
  opacity: 1;
}

/* 摘要行数锁回默认（pack() 的填洞拉伸在列表视图不适用） */
.discover-feed--list .home-waterfall-card .topic-slip-excerpt {
  -webkit-line-clamp: 2 !important;
}

.discover-feed--list .home-waterfall-card:not([data-has-cover="1"]) .topic-slip-excerpt {
  -webkit-line-clamp: 3 !important;
}

@media (min-width: 640px) {
  .discover-feed--list .home-waterfall-card[data-has-cover="1"] {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 9.5rem;
    gap: 0 1rem;
    align-items: start;
  }

  .discover-feed--list .home-waterfall-card[data-has-cover="1"] .hw-cover {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    width: auto;
    margin: 0.7rem 0.8rem 0.7rem 0;
    border-radius: 0.5rem;
  }

  .discover-feed--list .home-waterfall-card[data-has-cover="1"] .hw-cover-inner {
    aspect-ratio: 4 / 3 !important;
    max-height: 7rem;
    border-radius: 0.5rem;
    overflow: hidden;
  }

  .discover-feed--list .home-waterfall-card[data-has-cover="1"] .hw-cover-img {
    border-radius: 0.5rem;
  }

  .discover-feed--list .home-waterfall-card[data-has-cover="1"] .hw-body {
    grid-column: 1;
    grid-row: 1;
  }
}

/* ---- 4. 卡片统计行（topic_slip_card show_stats / JS cardHtml 同构） ------
   ♡ likes_count · 💬 replies_count · ⭐ bookmarks_count（仅发现/圈子启用；
   首页 Read 白名单不渲染）。⭐ 真鼠标可点：层叠修复见下方 2026-09-18 starfix。 */
.topic-slip-stats {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-top: 0.5rem;
  min-width: 0;
  font-size: 0.75rem;
  line-height: 1;
  color: var(--muted-foreground);
}

.topic-slip-stat {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-width: 0;
  font-variant-numeric: tabular-nums;
}

.topic-slip-stat__icon {
  width: 0.875rem;
  height: 0.875rem;
  flex: none;
}

.topic-slip-stat__num {
  font-size: 0.75rem;
}

/* 2026-09-18 starfix：⭐ 真鼠标可点（修复被整卡链接拦截）。
   根因：统计行在 .hw-body 内，而 .hw-body 于 home-waterfall.css 是
   position:relative; z-index:1 → 自成层叠上下文，按钮自身 z-index:3 被困其中，
   卡片直接子级 .hw-card-hit（z-index:2，整卡透明链接）永远盖在上面 →
   真实鼠标点击命中链接跳主题页且无 POST（键盘/程序化 click 不受影响）。
   修法：把 .hw-body 抬到 hit 层之上（z-index:3），非交互内容穿透
   （pointer-events:none）；仅收藏按钮恢复命中。整卡其它区域点击仍落到 hit 层。 */
.discover-feed .hw-body {
  position: relative;
  z-index: 3;
  pointer-events: none;
}

.discover-feed .topic-slip-stat--bookmark {
  pointer-events: auto;
}

.topic-slip-stat--bookmark {
  position: relative;
  z-index: 3; /* 统计行内最上层；跨 hit 层由上方 .discover-feed .hw-body 提升承接 */
  margin: -0.25rem -0.4rem;
  padding: 0.25rem 0.4rem;
  border: 0;
  border-radius: 9999px;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: color 160ms ease, background-color 160ms ease;
}

/* 44px 触达：伪元素扩大命中区，不改变统计行布局 */
.topic-slip-stat--bookmark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
}

.topic-slip-stat--bookmark:hover {
  color: var(--foreground);
  background: color-mix(in srgb, var(--muted) 55%, transparent);
}

.topic-slip-stat--bookmark:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.topic-slip-stat--bookmark.is-bookmarked {
  color: var(--brand-gold-strong);
}

.topic-slip-stat--bookmark.is-bookmarked svg {
  fill: currentColor;
}

/* ---- 5. 右栏增量 --------------------------------------------------------- */
.discover-more {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  min-height: 2.75rem;
  margin-top: 0.5rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  color: var(--foreground);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.discover-more:hover {
  background: color-mix(in srgb, var(--muted) 50%, transparent);
  border-color: var(--border);
}

.discover-more:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* 每日一句：纸面 + 山影（复用 hero ridge token；无外链） */
.discover-quote {
  position: relative;
  overflow: hidden;
  background: var(--card);
}

.discover-quote__text {
  position: relative;
  z-index: 1;
  margin: 0;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--foreground);
  overflow-wrap: anywhere;
}

.discover-quote__source {
  position: relative;
  z-index: 1;
  margin: 0.4rem 0 0;
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

.discover-quote__art {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 3rem;
  opacity: 0.22;
  pointer-events: none;
}

/* 加入圈子 CTA：发现页移动端/平板右栏也露出（home 原为 ≥1024 才显示） */
@media (max-width: 1023.98px) {
  .discover-rail .home-join-card {
    display: block;
  }
}

/* 你可能感兴趣的人 */
.discover-people__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  min-width: 0;
}

.discover-person {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  min-width: 0;
}

.discover-person__body {
  flex: 1 1 auto;
  min-width: 0;
}

.discover-person__name {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--foreground);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.discover-person__name:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.discover-person__name:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

.discover-person__bio {
  margin: 0.125rem 0 0;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--muted-foreground);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.discover-person__action {
  flex: none;
  margin: 0;
}

.discover-person__follow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  padding-inline: 0.9rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--foreground);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.discover-person__follow:hover {
  background: var(--muted);
  border-color: var(--border);
}

.discover-person__follow.is-following {
  border-color: var(--border);
  background: transparent;
  color: var(--muted-foreground);
}

.discover-person__follow:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* ---- 6. 右栏增量：热门话题标签 + 热门圈子（2026-09-18 圈子广场波） ------
   热门话题 = 仅标签 chips（无 meta / 无查看更多）；热门圈子 = 名称 + meta + 可选小封面。 */
.discover-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.discover-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  min-height: 2.25rem;
  padding-inline: 0.75rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--foreground);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.discover-tag:hover {
  background: var(--muted);
  border-color: var(--border);
}

.discover-tag:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.discover-tag__icon {
  flex: none;
  color: var(--brand-gold-strong);
}

.discover-circle-list {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.discover-circle-list li + li {
  border-top: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
}

.discover-circle-list a {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  min-height: 2.75rem;
  padding: 0.375rem;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: background-color 160ms ease;
}

.discover-circle-list a:hover {
  background: color-mix(in srgb, var(--muted) 40%, transparent);
}

.discover-circle-list a:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.discover-circle-list__cover {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--muted);
  color: var(--brand-gold-strong);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
}

.discover-circle-list__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.discover-circle-list__copy {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-width: 0;
}

.discover-circle-list__name {
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--foreground);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.discover-circle-list__meta {
  font-size: 0.6875rem;
  line-height: 1.5;
  color: var(--muted-foreground);
  font-variant-numeric: tabular-nums;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.discover-circle-list__check {
  flex: none;
  color: var(--brand-gold-strong);
}

/* ---- 7. 动效 · prefers-reduced-motion ------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  .discover-view__btn,
  .discover-more,
  .discover-person__follow,
  .topic-slip-stat--bookmark,
  .discover-tag,
  .discover-circle-list a {
    transition: none !important;
    transform: none !important;
    animation: none !important;
  }
}