/* =========================================================
   诗馆 · THE LIBRARY
   页头 / sticky 工具条 / 筛选 / 卡片（网格与列表）/ 分页 / 移动抽屉
   只用 tokens.css 的变量与 base.css 的组件类
   ========================================================= */

.page--catalog { padding-bottom: var(--sp-4); }

/* ---------------- 页头 ---------------- */
.catalog-hero {
  padding-block: clamp(40px, 6vw, 88px) clamp(28px, 4vw, 52px);
}
.catalog-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(32px, 5vw, 88px);
  align-items: end;
}
.catalog-hero__title {
  margin-top: var(--sp-4);
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(40px, 5.6vw, 72px);
  line-height: 1.12;
  letter-spacing: .05em;
  color: var(--ink);
}
.catalog-hero__lede { margin-top: var(--sp-5); max-width: 68ch; }
.catalog-hero__actions {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: var(--sp-3); margin-top: var(--sp-7);
}
.catalog-hero__aside {
  display: flex; flex-direction: column; align-items: flex-end;
  gap: var(--sp-4);
}
.catalog-stats {
  display: flex; align-items: flex-start;
  border-top: 1px solid var(--line);
  padding-top: var(--sp-4);
}
.catalog-stats > div {
  display: flex; flex-direction: column; gap: 6px;
  padding-inline: clamp(14px, 1.6vw, 24px);
  border-left: 1px solid var(--line);
}
.catalog-stats > div:first-child { padding-left: 0; border-left: 0; }
.catalog-stats > div:last-child { padding-right: 0; }
.catalog-stats dt {
  font-size: 10.5px; letter-spacing: .24em; text-transform: uppercase;
  color: var(--ink-3); white-space: nowrap;
}
.catalog-stats dd { margin: 0; display: flex; align-items: baseline; gap: 5px; }
.catalog-stats dd b {
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(26px, 2.6vw, 36px); line-height: 1; letter-spacing: .02em;
}
.catalog-stats dd span { font-size: var(--fs-xs); color: var(--ink-3); }
.catalog-hero__note {
  font-size: var(--fs-xs); line-height: 1.95; letter-spacing: .04em;
  color: var(--ink-3); text-align: right;
}

/* ---------------- sticky 工具条 ---------------- */
.catalog-tools {
  position: sticky;
  top: var(--nav-h);
  z-index: 30;
  padding-block: var(--sp-4) var(--sp-3);
  scroll-margin-top: calc(var(--nav-h) + 20px);
}
/* 背景单独用伪元素：避免 backdrop-filter 给 fixed 定位的筛选抽屉制造 containing block */
.catalog-tools::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  pointer-events: none;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(20px) saturate(140%);
  transition: background var(--dur-mid) var(--ease), box-shadow var(--dur-mid) var(--ease);
}
.catalog-tools.is-stuck::before {
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  box-shadow: 0 18px 40px -34px rgba(0, 0, 0, .6);
}
.catalog-tools__inner { display: flex; flex-direction: column; gap: var(--sp-4); }
.catalog-tools__top { display: flex; align-items: center; gap: var(--sp-3); }
.catalog-tools__actions { display: flex; align-items: center; gap: var(--sp-2); flex: none; }

/* 搜索框 */
.catalog-search {
  position: relative;
  display: flex; align-items: center; gap: var(--sp-3);
  flex: 1; min-width: 0; height: 54px;
  padding: 0 var(--sp-3) 0 var(--sp-5);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  background: color-mix(in srgb, var(--surface-2) 68%, transparent);
  transition: border-color var(--dur-mic) var(--ease), box-shadow var(--dur-mic) var(--ease),
              background var(--dur-mic) var(--ease);
}
.catalog-search:hover { border-color: var(--line-2); }
.catalog-search:focus-within {
  border-color: var(--accent);
  background: var(--surface-2);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent);
}
.catalog-search__icon { display: grid; place-items: center; color: var(--ink-3); flex: none; }
.catalog-search__icon svg { width: 18px; height: 18px; }
.catalog-search__input {
  flex: 1; min-width: 0; height: 100%;
  padding: 0; border: 0; outline: none; background: none;
  color: var(--ink); font-size: var(--fs-sm); letter-spacing: .03em;
}
.catalog-search__input::placeholder { color: var(--ink-3); opacity: .85; }
.catalog-search__input:not(:placeholder-shown) ~ .catalog-search__kbd { display: none; }
.catalog-search__input::-webkit-search-cancel-button,
.catalog-search__input::-webkit-search-decoration { -webkit-appearance: none; appearance: none; }
.catalog-search__kbd { flex: none; }
.catalog-search__clear {
  width: 34px; height: 34px; min-height: 34px; flex: none;
  border-radius: 50%; color: var(--ink-3);
}
.catalog-search__clear svg { width: 15px; height: 15px; }
.catalog-search__clear:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 8%, transparent); }

.catalog-clear { flex: none; }

/* 移动端筛选按钮（桌面隐藏） */
.catalog-filter-toggle {
  display: none; align-items: center; gap: 8px; flex: none;
  min-height: 42px; padding: 0 16px;
}
.catalog-filter-toggle svg { width: 16px; height: 16px; }
.catalog-filter-toggle__count {
  display: inline-grid; place-items: center;
  min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: var(--r-full);
  background: var(--ink); color: var(--bg);
  font-size: 10.5px; font-style: normal; line-height: 1;
}

/* ---------------- 筛选面板 ---------------- */
.catalog-filters { display: flex; flex-direction: column; gap: var(--sp-3); }
.catalog-filters__row { display: flex; align-items: center; gap: var(--sp-4); flex-wrap: wrap; }
.catalog-filters__label {
  flex: none;
  font-size: 10.5px; letter-spacing: .24em; text-transform: uppercase; color: var(--ink-3);
}
.catalog-filters__chips { flex: 1; min-width: 0; gap: 6px; }
.catalog-filters__chips .chip { min-height: 32px; padding: 0 13px; font-size: 11.5px; letter-spacing: .12em; }
.catalog-filters__chips .chip__count { font-size: 10px; }
.catalog-filters__row--controls { gap: var(--sp-5); }
.catalog-control { display: flex; align-items: center; gap: var(--sp-2); min-width: 0; }
.catalog-control__label {
  flex: none;
  font-size: 10.5px; letter-spacing: .2em; color: var(--ink-3);
}
.catalog-control__select {
  width: auto; min-width: 134px; min-height: 36px; height: 36px;
  padding: 0 34px 0 14px;
  border-radius: var(--r-full);
  font-size: 12px; letter-spacing: .05em;
  background-color: color-mix(in srgb, var(--surface-2) 52%, transparent);
}
.catalog-control--view { margin-left: auto; }
.catalog-view .segmented__item { display: inline-grid; place-items: center; min-height: 32px; padding: 0 10px; }
.catalog-view svg { width: 16px; height: 16px; }
.segmented__item[disabled] { opacity: .36; cursor: not-allowed; }
.segmented__item[disabled]:hover { color: var(--ink-3); }
.catalog-filters__reset,
.catalog-filters__done { display: none; }

/* ---------------- 结果状态行 ---------------- */
.catalog-results { scroll-margin-top: calc(var(--nav-h) + 160px); }
.catalog-status {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: var(--sp-4); flex-wrap: wrap;
  padding: clamp(26px, 3.2vw, 38px) 0 var(--sp-4);
  border-bottom: 1px solid var(--line);
}
.catalog-status__text {
  font-size: var(--fs-xs); letter-spacing: .1em; color: var(--ink-3);
}
.catalog-status__text b {
  font-family: var(--font-display); font-size: 18px; font-weight: 500;
  letter-spacing: .02em; color: var(--ink); margin: 0 3px;
}
.catalog-status__filters { color: var(--ink-2); }
.catalog-status__hint {
  font-family: var(--font-display); font-style: italic;
  font-size: 12.5px; letter-spacing: .12em; color: var(--ink-3);
}

/* ---------------- 卡片网格 ---------------- */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--sp-4);
  padding-top: var(--sp-5);
}
.catalog-card {
  position: relative;
  display: flex; flex-direction: column; gap: var(--sp-3);
  min-width: 0;
  padding: clamp(20px, 2.1vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease),
              box-shadow var(--dur-mid) var(--ease), background var(--dur-mid) var(--ease);
}
.catalog-card::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit; pointer-events: none;
  background: linear-gradient(158deg, color-mix(in srgb, var(--glow) 44%, transparent), transparent 48%);
  opacity: 0;
  transition: opacity var(--dur-mid) var(--ease);
}
.catalog-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-2);
  box-shadow: var(--shadow-md);
}
.catalog-card:hover::after { opacity: 1; }
.catalog-card__top {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3);
}
.catalog-card__no {
  font-family: var(--font-display);
  font-size: 11.5px; letter-spacing: .18em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums lining-nums;
}
.catalog-card__fav {
  position: relative; z-index: 2;
  display: grid; place-items: center;
  width: 34px; height: 34px; flex: none;
  border-radius: 50%;
  border: 1px solid transparent;
  color: var(--ink-3);
  transition: color var(--dur-mic) var(--ease), background var(--dur-mic) var(--ease),
              border-color var(--dur-mic) var(--ease);
}
.catalog-card__fav svg { width: 16px; height: 16px; }
.catalog-card__fav:hover { color: var(--ink); background: var(--accent-soft); border-color: var(--line); }
.catalog-card__fav.is-on {
  color: var(--accent-2);
  border-color: color-mix(in srgb, var(--accent-2) 40%, transparent);
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
}
.catalog-card__body {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; gap: var(--sp-2);
  min-width: 0;
}
.catalog-card__heading { margin: 0; font-weight: 400; }
.catalog-card__title {
  display: inline;
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(18px, 1.55vw, 22px); line-height: 1.45; letter-spacing: .05em;
  color: var(--ink);
  transition: color var(--dur-mic) var(--ease);
}
.catalog-card__title:hover { color: var(--accent); }
.catalog-card__meta {
  font-size: var(--fs-xs); letter-spacing: .07em; color: var(--ink-3);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.catalog-card__excerpt {
  font-family: var(--font-serif);
  font-size: var(--fs-sm); line-height: 1.95; letter-spacing: .03em;
  color: var(--ink-2);
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3;
  overflow: hidden;
}
.catalog-card__verse {
  font-family: var(--font-serif);
  font-size: 15px; line-height: 2.02; letter-spacing: .05em;
  color: var(--ink);
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 6;
  overflow: hidden;
}
.catalog-card--trio .catalog-card__title {
  font-size: clamp(15px, 1.28vw, 17px);
  letter-spacing: .08em; color: var(--ink-2);
}
.catalog-card--trio .catalog-card__title:hover { color: var(--accent); }
.catalog-card__tags {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: auto; padding-top: var(--sp-3);
}
.catalog-card__glyph {
  position: absolute; right: 16px; bottom: 2px;
  font-family: var(--font-display);
  font-size: 76px; line-height: 1;
  color: var(--line);
  pointer-events: none; user-select: none;
}
.catalog-card mark,
.catalog-empty mark {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-radius: 2px;
  padding: 0 1px;
  color: var(--accent);
  font-weight: 500;
}

/* ---------------- 列表视图 ---------------- */
.catalog-grid.is-list {
  display: flex; flex-direction: column; gap: 0;
  padding-top: 0;
  border-top: 1px solid var(--line);
}
.catalog-grid.is-list .catalog-card {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) auto;
  grid-template-areas:
    "no body fav"
    "no tags tags";
  column-gap: var(--sp-5); row-gap: var(--sp-3);
  align-items: start;
  padding: var(--sp-5) 0;
  border: 0; border-bottom: 1px solid var(--line);
  border-radius: 0; background: transparent; box-shadow: none;
  overflow: visible;
}
.catalog-grid.is-list .catalog-card::after { display: none; }
.catalog-grid.is-list .catalog-card:hover {
  transform: none; box-shadow: none;
  border-bottom-color: var(--line-2);
}
.catalog-grid.is-list .catalog-card__top { display: contents; }
.catalog-grid.is-list .catalog-card__no { grid-area: no; padding-top: 3px; }
.catalog-grid.is-list .catalog-card__fav { grid-area: fav; justify-self: end; }
.catalog-grid.is-list .catalog-card__body { grid-area: body; gap: 6px; }
.catalog-grid.is-list .catalog-card__title { font-size: clamp(19px, 1.7vw, 24px); }
.catalog-grid.is-list .catalog-card__excerpt { -webkit-line-clamp: 2; max-width: 76ch; }
.catalog-grid.is-list .catalog-card__verse { -webkit-line-clamp: 2; max-width: 76ch; }
.catalog-grid.is-list .catalog-card__tags { grid-area: tags; margin-top: 0; padding-top: 0; }
.catalog-grid.is-list .catalog-card__glyph { display: none; }
.catalog-grid.is-list .catalog-card:hover .catalog-card__title { color: var(--accent); }

/* ---------------- 空状态 ---------------- */
.catalog-empty {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: var(--sp-4);
  padding: clamp(46px, 7vw, 92px) var(--sp-6);
  margin-top: var(--sp-6);
  border: 1px dashed var(--line);
  border-radius: var(--r-lg);
}
.catalog-empty__title { font-size: var(--fs-h2); }
.catalog-empty__text {
  font-size: var(--fs-sm); line-height: 1.95; color: var(--ink-3);
  max-width: 42ch;
}
.catalog-empty__chips { justify-content: center; }
.catalog-empty__actions {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: var(--sp-3); margin-top: var(--sp-2);
}

/* ---------------- 加载更多 / 尾声 ---------------- */
.catalog-more {
  display: flex; flex-direction: column; align-items: center;
  padding-top: clamp(30px, 4vw, 52px);
}
.catalog-more__btn { min-width: 248px; }
.catalog-more__count {
  font-style: normal; margin-left: 6px;
  font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .04em;
}
.catalog-more__sentinel { width: 100%; height: 1px; }
.catalog-end {
  padding-top: clamp(30px, 4vw, 54px);
  text-align: center;
  font-family: var(--font-serif);
  font-size: var(--fs-sm); letter-spacing: .16em; color: var(--ink-3);
}

/* ---------------- 移动筛选抽屉 ---------------- */
.catalog-backdrop {
  position: fixed; inset: 0; z-index: 54;
  background: color-mix(in srgb, var(--bg) 16%, rgba(4, 10, 18, .52));
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--dur-mid) var(--ease);
}
.catalog-backdrop.is-open { opacity: 1; }
.catalog-drawer {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 55;
  display: flex; flex-direction: column;
  max-height: 86vh;
  background: var(--surface-solid);
  border-top: 1px solid var(--line-2);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  box-shadow: var(--shadow-lg);
  transform: translateY(104%);
  transition: transform .42s var(--ease-out);
  padding-bottom: env(safe-area-inset-bottom);
}
.catalog-drawer.is-open { transform: none; }
.catalog-drawer__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--pad-x) var(--sp-3);
  border-bottom: 1px solid var(--line);
}
.catalog-drawer__body { padding: var(--sp-5) var(--pad-x) var(--sp-8); overflow-y: auto; }
.catalog-drawer .catalog-filters { gap: var(--sp-5); }
.catalog-drawer .catalog-filters__row {
  flex-direction: column; align-items: stretch; gap: var(--sp-3);
}
.catalog-drawer .catalog-filters__label { display: block; }
.catalog-drawer .catalog-filters__chips { gap: 8px; }
.catalog-drawer .catalog-filters__chips .chip { min-height: 36px; }
.catalog-drawer .catalog-filters__row--controls { gap: var(--sp-4); }
.catalog-drawer .catalog-control { justify-content: space-between; gap: var(--sp-3); }
.catalog-drawer .catalog-control__select { flex: 1; min-width: 0; height: 44px; min-height: 44px; font-size: var(--fs-sm); }
.catalog-drawer .catalog-control--view { margin-left: 0; }
.catalog-drawer .catalog-view .segmented__item { min-height: 40px; padding: 0 18px; }
.catalog-drawer .catalog-filters__reset { display: inline-flex; }
.catalog-drawer .catalog-filters__done { display: inline-flex; width: 100%; margin-top: var(--sp-1); min-height: 46px; }

@media (min-width: 981px) {
  .catalog-drawer,
  .catalog-backdrop { display: none !important; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1100px) {
  .catalog-hero__grid { gap: clamp(28px, 4vw, 56px); }
  .catalog-control--view { margin-left: 0; }
}

@media (max-width: 980px) {
  .catalog-hero { padding-block: clamp(30px, 6vw, 56px) var(--sp-6); }
  .catalog-hero__grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  .catalog-hero__aside { align-items: flex-start; }
  .catalog-stats { border-top: 0; padding-top: 0; }
  .catalog-stats > div { padding-inline: 0 clamp(20px, 5vw, 36px); border-left: 0; }
  .catalog-hero__note { text-align: left; }
  .catalog-filter-toggle { display: inline-flex; }
  .catalog-clear { display: none; }
  .catalog-search { height: 48px; padding-left: var(--sp-4); }
  .catalog-search__kbd { display: none; }
  .catalog-tools { padding-block: var(--sp-3) var(--sp-2); }
  .catalog-tools__inner { gap: var(--sp-3); }
  .catalog-control--view { display: none; }
  .catalog-results { scroll-margin-top: calc(var(--nav-h) + 100px); }
  .catalog-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

@media (max-width: 700px) {
  .catalog-hero__actions .btn { flex: 1; min-width: 150px; }
  .catalog-stats dd b { font-size: 30px; }
  .catalog-stats > div { padding-right: var(--sp-6); }
  .catalog-grid { grid-template-columns: 1fr; gap: var(--sp-3); }
  .catalog-grid.is-list .catalog-card {
    grid-template-columns: 44px minmax(0, 1fr) auto;
    column-gap: var(--sp-3);
    padding: var(--sp-5) 0;
  }
  .catalog-grid.is-list .catalog-card__title { font-size: 19px; }
  .catalog-card { padding: 22px 20px; }
  .catalog-empty { padding: clamp(38px, 9vw, 64px) var(--sp-4); }
}

@media (max-width: 420px) {
  .catalog-hero__title { font-size: 36px; }
  .catalog-search__clear { width: 30px; height: 30px; min-height: 30px; }
  .catalog-filter-toggle { padding: 0 13px; }
  .catalog-status__hint { display: none; }
}

/* 触屏 / 低动效环境 */
@media (hover: none) {
  .catalog-card:hover { transform: none; box-shadow: var(--shadow-sm); }
  .catalog-card:hover::after { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .catalog-tools::before { transition: none; }
  .catalog-drawer { transition: none; }
  .catalog-backdrop { transition: none; }
}