.page-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.page-heading h1,
.card h2 {
  margin-top: 0;
}

.app-nav-list {
  display: grid;
  gap: 0.5rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.metric-card {
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  background: var(--deltaops-surface);
  border: 1px solid var(--deltaops-border);
  border-radius: var(--deltaops-radius);
}

.metric-card__value {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
}

.dashboard-grid,
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.dashboard-grid > :last-child,
.detail-attachments {
  grid-column: 1 / -1;
}

.distribution-list,
.attachment-list,
.activity-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.distribution-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--deltaops-border);
}

.filter-panel {
  margin-bottom: 1rem;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: end;
}

.filter-grid label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.filter-grid select,
.filter-grid input {
  width: 100%;
  min-height: 2.75rem;
}

.filter-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.ticket-table-wrap {
  overflow-x: auto;
  background: var(--deltaops-surface);
  border: 1px solid var(--deltaops-border);
  border-radius: var(--deltaops-radius);
}

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

.ticket-table th,
.ticket-table td {
  padding: 0.7rem;
  text-align: left;
  border-bottom: 1px solid var(--deltaops-border);
  vertical-align: top;
}

.ticket-card-list {
  display: none;
}

.ticket-card {
  padding: 1rem;
  background: var(--deltaops-surface);
  border: 1px solid var(--deltaops-border);
  border-radius: var(--deltaops-radius);
}

.ticket-card h2 {
  margin: 0.4rem 0;
  font-size: 1.05rem;
}

.ticket-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  color: var(--deltaops-muted);
}

.ticket-code {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.pagination,
.detail-tabs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pagination {
  margin-top: 1rem;
}

.detail-tabs a {
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--deltaops-border);
  border-radius: 0.4rem;
  text-decoration: none;
}

.detail-list {
  display: grid;
  gap: 0.65rem;
  margin: 0;
}

.detail-list > div {
  display: grid;
  grid-template-columns: minmax(7rem, 0.45fr) 1fr;
  gap: 0.75rem;
}

.detail-list dt {
  font-weight: 600;
  color: var(--deltaops-muted);
}

.detail-list dd {
  margin: 0;
}

.plain-text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.conversation-list,
.activity-list {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.conversation-item,
.activity-item {
  padding: 1rem;
  background: var(--deltaops-surface);
  border: 1px solid var(--deltaops-border);
  border-radius: var(--deltaops-radius);
}

.conversation-item__meta,
.activity-item__header {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.attachment-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.35rem 0.75rem;
  align-items: center;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--deltaops-border);
}

.attachment-list .muted {
  grid-column: 1;
}

.attachment-list .button {
  grid-column: 2;
  grid-row: 1 / span 2;
}

.attachment-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 600;
}

@media (max-width: 60rem) {
  .filter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 48rem) {
  .metric-grid,
  .dashboard-grid,
  .detail-grid,
  .filter-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-grid > :last-child,
  .detail-attachments {
    grid-column: auto;
  }

  .ticket-table-wrap {
    display: none;
  }

  .ticket-card-list {
    display: grid;
    gap: 0.75rem;
  }

  .page-heading {
    display: grid;
  }

  .detail-list > div {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .attachment-list li {
    grid-template-columns: minmax(0, 1fr);
  }

  .attachment-list .button,
  .attachment-list .muted {
    grid-column: 1;
    grid-row: auto;
  }
}