.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-6);
  padding-bottom: var(--spacing-3);
  border-bottom: var(--border-width) solid var(--color-border);

  & h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0;
  }
}

.new-topics-banner {
  background: linear-gradient(to right, var(--color-primary-50), var(--color-primary-100));
  border: var(--border-width) solid var(--color-primary-300);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  text-align: center;
}

.new-topics-link {
  color: var(--color-primary-700);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  display: block;

  &:hover {
    color: var(--color-primary-900);
    text-decoration: underline;
  }
}

.stats {
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
}

.topics-table {
  & table {
    width: 100%;
    border-collapse: collapse;
  }

  & th {
    background: var(--color-bg-table-header);
    padding: var(--spacing-4);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
  }

  & th.activity-header {
    text-align: center;
  }

  & th.participants-header {
    text-align: right;
  }

  & th.topic-title {
    border-left: var(--color-bg-table-header) 8px solid;
  }

  & td {
    padding: var(--spacing-2);
    border-bottom: 1px #000 solid;
    vertical-align: top;
  }

  & .topic-replies {
    width: 100px;
  }
  & .topic-activity {
    width: 140px;
  }
  & .topic-participants {
    width: 250px;
    text-align: right;

    .topic-icon {
      margin: 0 4px;
      vertical-align: top;
    }

    .participants {
      display: inline-block;
    }
  }
}

.topic-icon {
  display: inline-block;
  background: var(--color-bg-icon);
  border-radius: var(--border-radius-sm);
  padding: 3px;
  margin: 0px;
  margin-right: 10px;
  position: relative;
}

.topic-icon-badge {
  position: absolute;
  bottom: -6px;
  right: -6px;
  min-width: 18px;
  height: 18px;
  padding: 2px 4px;
  border-radius: 999px;
  background: var(--color-bg-icon);
  color: #000;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.status-border {
  border-left: 8px solid transparent;
}

.status-border.status-new {
  border-left-color: var(--color-border-new);
}

.status-border.status-aware {
  border-left-color: var(--color-border-aware);
}

.status-border.status-reading {
  border-left-color: var(--color-border-reading);
}

.status-border.status-read {
  border-left-color: var(--color-border-read);
}

.activity-core_team {
  background-color: var(--color-bg-committer);
}

.activity-committer {
  background-color: var(--color-bg-committer);
}

.activity-note {
  background-color: var(--color-bg-activity-team);
  .topic-icon-badge {
    background-color: var(--color-bg-activity-team);
  }
}

.activity-team {
  background-color: var(--color-bg-activity-team);
  
  .topic-icon-badge {
    background-color: var(--color-bg-activity-team);
  }
}

.activity-team.is-mine {
  background-color: var(--color-bg-activity-user);
}

.activity-team-read {
  background-color: var(--color-bg-activity-team);
  .topic-icon-badge {
    background-color: var(--color-bg-activity-team);
  }
}

.topic-row {
  &:hover {
    background: var(--color-bg-hover);
  }
}

.topic-row.topic-read {
	color: #444;
}

.topic-icon-hover {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 20;
  background: var(--color-bg-hoverbox);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-3);
  box-shadow: var(--shadow-lg);
  min-width: 260px;
}

.topic-participants .topic-icon-hover {
  left: auto;
  right: 0;
}

.topic-icon.is-open .topic-icon-hover {
  display: block;
}

.topic-icon-hover .participant-row {
  margin-bottom: var(--spacing-2);
}

.topic-icon-hover .participant-row:last-child {
  margin-bottom: 0;
}

.topic-meta {
  & span {
    padding-right: var(--spacing-2);
  }
}

.topic-link {
  color: var(--color-text-link);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);

  &:hover {
    color: var(--color-text-link-hover);
    text-decoration: underline;
  }
}

.activity-info {
  display: flex;
  flex-direction: column;
  gap: 0;
  text-align: center;
  font-size: var(--font-size-sm);
}

.activity-replies {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.activity-time {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.activity-author {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.attachment-icon {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  color: var(--color-text-secondary);
}

.status-shape {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: #f3f4f6;
  border: 2px solid transparent;
  color: inherit;
}

.is-new .status-shape {
  border-color: #ef4444;
  background: #fee2e2;
}

.is-aware .status-shape {
  border-color: #f59e0b;
  background: #fef3c7;
  border-radius: 999px;
}

.is-reading .status-shape {
  border-color: #38bdf8;
  background: #e0f2fe;
  border-radius: 4px;
}

.is-read .status-shape {
  border-color: #1d4ed8;
  background: #e0e7ff;
  border-radius: 4px;
}

.team-reader-avatars {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--spacing-2);
}

.team-reader-avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid transparent;
}

.team-reader-avatar.is-read {
  border-color: #1d4ed8;
}

.team-reader-avatar.is-reading {
  border-color: #38bdf8;
}

.note-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: var(--spacing-2);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.note-icon {
  font-size: var(--font-size-base);
}

.note-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  padding: 2px 6px;
  border-radius: 10px;
  background: #fef3c7;
  color: #b45309;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topics-actions {
  display: flex;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  align-items: center;
  border-bottom: var(--border-width) solid var(--color-border);
}

.mark-aware-button {
  padding: var(--spacing-2) var(--spacing-4);
  border: var(--border-width) solid var(--color-border);
  background: white;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-weight: var(--font-weight-medium);

  &.secondary {
    background: var(--color-gray-50);
  }
}

.global-warning {
  background: #fff4e5;
  color: #9a4d00;
  padding: var(--spacing-2) var(--spacing-4);
  text-align: center;
  font-weight: var(--font-weight-semibold);
}

.status-progress {
  margin-top: 6px;
  width: 120px;
  height: 6px;
  background: var(--color-gray-100);
  border-radius: 999px;
  overflow: hidden;
}

.status-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #a5b4fc, #6366f1);
}

.tag-filter-banner {
  margin: var(--spacing-3) 0;
  padding: var(--spacing-3);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: var(--color-gray-50);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.clear-tag-filter {
  color: var(--color-text-link);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

.view-toggle-bar {
  display: flex;
  gap: var(--spacing-3);
  margin: var(--spacing-3) 0;
  flex-wrap: wrap;
}

.view-toggle-group {
  display: flex;
  gap: var(--spacing-2);
}

.toggle-btn {
  padding: 6px 12px;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  background: white;
}

.toggle-btn.active {
  background: var(--color-primary-50);
  border-color: var(--color-primary-200);
}