/* =============================================================
   botchitter — タイムライン・投稿カード・日付区切り (timeline.css)
============================================================= */

.view-timeline {
  display: flex;
  flex-direction: column;
}
.view-timeline.hidden {
  display: none;
}

.timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 0;
  contain: layout style;
}

.tweet-item {
  position: relative;
  padding: 16px 0 20px;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--line);
  content-visibility: auto;
  contain-intrinsic-size: auto 130px;
  contain: layout style;
  scroll-margin-top: calc(64px + env(safe-area-inset-top, 0px));
}
.tweet-item.enter {
  animation: fadeInTweet 0.25s var(--ease-out);
}
.tweet-item.is-target {
  border-radius: 6px;
  animation: targetFlash 1.6s ease-out;
}
@keyframes targetFlash {
  from { background-color: var(--tag-bg); box-shadow: 0 0 0 10px var(--tag-bg); }
  to { background-color: transparent; box-shadow: 0 0 0 10px transparent; }
}
.tweet-item.leaving {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.tweet-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 8px;
}

.tweet-date-link {
  color: var(--text-tertiary);
  text-decoration: none;
  cursor: pointer;
  transition: color 0.15s;
}
.tweet-date-link:hover {
  color: var(--text-primary);
}

.tweet-content {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-primary);
  margin-bottom: 8px;
  white-space: pre-wrap;
  word-break: break-word;
  cursor: pointer;
}

/* 引用リツイートカード */
.quoted-card {
  background: var(--quote-bg);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 6px 0 10px;
  border-left: 2px solid var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.quoted-card:hover {
  background: var(--quote-hover);
  transform: translateY(-1px);
}

.quoted-card-header {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.quoted-card-date {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.quoted-card-date svg {
  width: 11px;
  height: 11px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.quoted-card-comments-badge {
  font-size: 10px;
  background: var(--hover-overlay);
  padding: 2px 7px;
  border-radius: 999px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-variant-numeric: tabular-nums;
}
.quoted-card-comments-badge svg {
  width: 11px;
  height: 11px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}

.quoted-card-body {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
}

.tweet-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 14px;
  margin-top: 4px;
}

.action-btn {
  background: none;
  border: none;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--text-tertiary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 5px 6px;
  border-radius: 999px;
  transition: color 0.15s, background-color 0.15s;
  min-width: 28px;
  height: 28px;
  box-sizing: border-box;
}
.action-btn:hover {
  color: var(--text-primary);
  background: var(--hover-overlay);
}
.action-btn.delete-btn:hover {
  color: var(--danger);
}
.action-btn svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  stroke-width: 1.75;
  fill: none;
}

.action-count {
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
}
.action-count:empty {
  display: none;
}

/* スレッド／コメント（インライン） */
.replies-thread {
  margin-top: 10px;
  padding-left: 14px;
  border-left: 1.5px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reply-item {
  background: var(--reply-bg);
  border-radius: 6px;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  content-visibility: auto;
  contain-intrinsic-size: auto 54px;
  contain: layout style;
}
.reply-item.enter {
  animation: fadeInTweet 0.2s var(--ease-out);
}

.reply-meta {
  font-size: 10px;
  color: var(--text-tertiary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.reply-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.reply-action-btn {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px 4px;
  border-radius: 4px;
  transition: color 0.15s, background-color 0.15s;
}
.reply-action-btn:hover {
  color: var(--text-primary);
  background: var(--hover-overlay);
}
.reply-action-btn.delete-btn:hover {
  color: var(--danger);
}
.reply-action-btn svg {
  width: 12px;
  height: 12px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}

.reply-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

/* タグと絞り込みバー */
.tag {
  color: var(--tag);
  cursor: pointer;
}
.tag:hover {
  text-decoration: underline;
}

.tag-count {
  margin-left: 6px;
  font-size: 11px;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

.filter-bar {
  display: none;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.filter-bar.show {
  display: flex;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--quote-bg);
  border: none;
  border-radius: 999px;
  padding: 5px 10px 5px 12px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
}
.filter-chip.is-tag {
  color: var(--tag);
}
.filter-chip:hover {
  background: var(--quote-hover);
}
.filter-chip-x {
  font-size: 11px;
  color: var(--text-tertiary);
}

.tag-list {
  display: none;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 16px 14px;
  max-height: 160px;
  overflow-y: auto;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.tag-list::-webkit-scrollbar {
  width: 4px;
}
.tag-list::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 999px;
}
.tag-list.show {
  display: flex;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  background: var(--quote-bg);
  border: none;
  border-radius: 999px;
  padding: 5px 11px;
  font-family: inherit;
  font-size: 13px;
  color: var(--tag);
  cursor: pointer;
}
.tag-chip:hover {
  background: var(--quote-hover);
}

/* 検索結果 0 件の空状態 */
.timeline-empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-secondary);
}
.empty-state-text {
  font-size: 14px;
  margin-bottom: 16px;
  line-height: 1.6;
}
.btn-clear-empty {
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}
.btn-clear-empty:hover {
  background: var(--hover-overlay);
  border-color: var(--text-tertiary);
}

/* 日付境界線（デイ・ディバイダー） */
.timeline-day-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin: 28px 0 16px;
  user-select: none;
}
.timeline-day-divider:first-child {
  margin-top: 10px;
}
.timeline-day-divider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--line);
  z-index: 1;
}
.timeline-day-divider span {
  position: relative;
  z-index: 2;
  background: var(--bg);
  padding: 2px 12px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-tertiary);
  border-radius: 999px;
  border: 1px solid var(--line);
}

/* 日付ラインの直前にある投稿の下のラインを消す */
.tweet-item:has(+ .timeline-day-divider) {
  border-bottom: none;
}