/**
 * archive-directory.css — 归档页年份 / 月份时间目录
 * 桌面端保持正文居中，目录占用左侧留白；窄屏折叠为顶部浮层。
 */

.log-page {
  max-width: 1160px;
}

.log-page > .press-page-title,
.log-page > .press-page-sub,
.log-page > .log-filters {
  width: min(100%, 680px);
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
}

.archive-layout {
  display: grid;
  grid-template-columns: 190px minmax(0, 680px) 190px;
  justify-content: center;
  align-items: start;
  gap: 30px;
}

.archive-layout::after {
  grid-column: 3;
  content: '';
}

.archive-directory {
  position: sticky;
  top: 28px;
  grid-column: 1;
  min-width: 0;
  z-index: 24;
}

.archive-timeline-column {
  grid-column: 2;
  min-width: 0;
}

.archive-directory-toggle {
  display: none;
}

.archive-directory-panel {
  overflow: hidden;
  border: 1px solid var(--press-hairline);
  border-top: 2px solid var(--press-ink);
  background: var(--color-surface);
}

.archive-directory-title {
  margin: 0;
  padding: 14px 15px 11px;
  border-bottom: 1px solid var(--press-hairline);
  color: var(--color-heading);
  font-family: var(--press-sans);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.archive-directory-list {
  max-height: calc(100vh - 124px);
  overflow: auto;
  overscroll-behavior: contain;
  padding: 4px 15px 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--press-rule-light) transparent;
}

.archive-directory-year + .archive-directory-year {
  border-top: 1px solid var(--press-hairline);
}

.archive-directory-year-toggle {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 12px 0 10px;
  border: 0;
  background: transparent;
  color: var(--color-heading);
  cursor: pointer;
  font-family: var(--press-serif);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1;
  text-align: left;
}

.archive-directory-year-toggle:hover,
.archive-directory-year-toggle:focus-visible {
  color: var(--archive-accent);
}

.archive-directory-year-toggle:focus-visible,
.archive-directory-month:focus-visible,
.archive-directory-toggle:focus-visible {
  outline: 1px solid var(--archive-accent);
  outline-offset: 3px;
}

.archive-directory-year-mark {
  position: relative;
  flex: 0 0 12px;
  width: 12px;
  height: 12px;
}

.archive-directory-year-mark::before,
.archive-directory-year-mark::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 1px;
  background: currentColor;
  content: '';
  transform: translate(-50%, -50%);
  transition: transform 160ms ease;
}

.archive-directory-year-mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.archive-directory-year-toggle[aria-expanded="true"] .archive-directory-year-mark::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.archive-directory-months {
  position: relative;
  margin: 0 0 10px;
  padding: 0 0 0 12px;
}

.archive-directory-months[hidden] {
  display: none;
}

.archive-directory-months::before {
  position: absolute;
  top: 2px;
  bottom: 2px;
  left: 0;
  width: 1px;
  background: var(--press-hairline);
  content: '';
}

.archive-directory-month {
  position: relative;
  display: grid;
  grid-template-columns: 25px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 7px;
  min-width: 0;
  padding: 6px 0;
  color: var(--press-muted);
  font-family: var(--press-sans);
  font-size: 0.73rem;
  line-height: 1.3;
  text-decoration: none;
}

.archive-directory-month::before {
  position: absolute;
  top: 50%;
  left: -12px;
  width: 1px;
  height: 0;
  background: var(--archive-accent);
  content: '';
  transform: translateY(-50%);
  transition: height 160ms ease;
}

.archive-directory-month:hover,
.archive-directory-month.is-active {
  color: var(--color-heading);
}

.archive-directory-month.is-active::before {
  height: 100%;
  width: 2px;
}

.archive-directory-month-index,
.archive-directory-month-count {
  font-variant-numeric: tabular-nums;
}

.archive-directory-month-index {
  color: var(--archive-accent);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.archive-directory-month-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.archive-directory-month-count {
  color: var(--press-muted);
  font-size: 0.62rem;
}

.log-month {
  scroll-margin-top: 24px;
}

@media (max-width: 1160px) {
  .archive-layout {
    grid-template-columns: 190px minmax(0, 680px);
    gap: 32px;
  }

  .archive-layout::after {
    display: none;
  }
}

@media (max-width: 920px) {
  .log-page {
    max-width: 720px;
  }

  .archive-layout {
    display: block;
  }

  .archive-directory {
    top: 8px;
    margin: 14px 0 20px;
  }

  .archive-directory-toggle {
    display: flex;
    width: 100%;
    min-height: 60px;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 14px 11px;
    border: 1px solid var(--press-hairline);
    border-top: 2px solid var(--press-ink);
    background: var(--press-paper);
    color: var(--color-heading);
    cursor: pointer;
    font-family: var(--press-sans);
    text-align: left;
  }

  .archive-directory-toggle-copy {
    display: grid;
    gap: 3px;
    min-width: 0;
  }

  .archive-directory-toggle-title {
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
  }

  .archive-directory-toggle-hint {
    color: var(--press-muted);
    font-size: 0.66rem;
    font-weight: 400;
    letter-spacing: 0.02em;
  }

  .archive-directory-toggle-action {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 9px;
    color: var(--archive-accent);
  }

  .archive-directory-toggle-state {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.04em;
  }

  .archive-directory-toggle-mark {
    position: relative;
    width: 12px;
    height: 12px;
  }

  .archive-directory-toggle-mark::before {
    position: absolute;
    top: 1px;
    left: 1px;
    width: 7px;
    height: 7px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    content: '';
    transform: rotate(45deg);
    transition: transform 160ms ease;
  }

  .archive-directory.is-open .archive-directory-toggle-mark::before {
    transform: translateY(4px) rotate(225deg);
  }

  .archive-directory-panel {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    display: none;
    width: 100%;
    max-height: min(64vh, 520px);
    box-sizing: border-box;
    box-shadow: 0 16px 34px var(--press-hairline-strong);
  }

  .archive-directory.is-open .archive-directory-panel {
    display: block;
  }

  .archive-directory-list {
    max-height: min(54vh, 430px);
  }

  .log-month {
    scroll-margin-top: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .archive-directory-year-mark::before,
  .archive-directory-year-mark::after,
  .archive-directory-month::before,
  .archive-directory-toggle-mark::before {
    transition: none;
  }
}