/* Destination-scoped mail board adapted from the bundled workflow-board
   interface. Columns own vertical card scrolling; the board viewport owns
   horizontal scrolling so the document never overflows. */

.board-main,
.board-region {
  overflow: hidden;
}

.board-toolbar {
  min-height: 52px;
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: var(--wf-space-3);
  padding: var(--wf-space-2) var(--wf-space-4);
  border-bottom: 1px solid var(--wf-border);
  background: var(--wf-surface);
}

.board-search {
  position: relative;
  width: min(320px, 42vw);
}

.board-search > [data-wf-icon] .wf-icon {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: var(--wf-space-3);
  width: 15px;
  height: 15px;
  color: var(--wf-gray-500);
  transform: translateY(-50%);
  pointer-events: none;
}

.board-search .wf-input {
  min-height: 34px;
  padding-left: var(--wf-space-8);
  border-radius: 999px;
}

.board-toolbar__count,
.board-toolbar__hint {
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
  white-space: nowrap;
}

.board-toolbar__hint {
  margin-left: auto;
}

.board-viewport {
  flex: 1;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  background: var(--wf-gray-50);
}

.board-columns {
  min-width: max-content;
  height: 100%;
  display: flex;
  align-items: flex-start;
  gap: var(--wf-space-4);
  padding: var(--wf-space-4);
}

.board-column {
  width: 304px;
  max-height: 100%;
  display: flex;
  flex: 0 0 304px;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius-4);
  background: var(--wf-gray-100);
}

.board-column[data-board-drag-over="true"] {
  border-color: var(--wf-gray-600);
  box-shadow: inset 0 0 0 1px var(--wf-gray-600);
}

.board-column[data-board-dragging="true"] {
  opacity: .55;
}

.board-column__head {
  display: flex;
  flex: 0 0 auto;
  align-items: flex-start;
  gap: var(--wf-space-2);
  padding: var(--wf-space-3);
  border-bottom: 1px solid var(--wf-border);
  background: var(--wf-surface);
}

.board-column__identity {
  min-width: 0;
  flex: 1;
}

.board-column__title-row {
  display: flex;
  align-items: center;
  gap: var(--wf-space-2);
}

.board-column__title {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  font-size: var(--wf-text-sm);
  line-height: var(--wf-line-tight);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-column__count {
  display: inline-grid;
  min-width: 22px;
  height: 22px;
  place-items: center;
  padding: 0 var(--wf-space-1);
  border-radius: 999px;
  background: var(--wf-gray-200);
  color: var(--wf-gray-700);
  font-size: var(--wf-text-2xs);
  font-weight: 700;
}

.board-column__description {
  margin: var(--wf-space-1) 0 0;
  overflow: hidden;
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-column__fixed {
  flex: 0 0 auto;
  padding: 2px var(--wf-space-2);
  border: 1px solid var(--wf-border-strong);
  border-radius: 999px;
  color: var(--wf-gray-700);
  font-size: var(--wf-text-2xs);
  font-weight: 700;
}

.board-column__actions {
  display: flex;
  align-items: center;
  gap: var(--wf-space-1);
}

.board-column__actions .wf-button {
  width: 28px;
  min-height: 28px;
  height: 28px;
}

.board-column__actions .wf-icon {
  width: 15px;
  height: 15px;
}

.board-column__drag {
  cursor: grab;
}

.board-column__drag:active {
  cursor: grabbing;
}

.board-column__cards {
  min-height: 72px;
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--wf-space-2);
  overflow: auto;
  padding: var(--wf-space-2);
}

.board-column__empty {
  margin: auto 0;
  padding: var(--wf-space-5) var(--wf-space-3);
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
  text-align: center;
}

.board-card {
  position: relative;
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: var(--wf-space-2);
  padding: var(--wf-space-3);
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius-3);
  background: var(--wf-surface);
  color: var(--wf-text);
  text-align: left;
  cursor: pointer;
}

.board-card:hover {
  border-color: var(--wf-border-strong);
  box-shadow: var(--wf-shadow-1);
}

.board-card[aria-selected="true"] {
  border-color: var(--wf-gray-700);
  box-shadow: inset 0 0 0 1px var(--wf-gray-700);
}

.board-card[data-board-card-dragging="true"] {
  opacity: .45;
}

.board-card__top,
.board-card__meta {
  display: flex;
  align-items: center;
  gap: var(--wf-space-2);
}

.board-card__top {
  justify-content: space-between;
}

.board-card__sender {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  font-size: var(--wf-text-xs);
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-card__time {
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-2xs);
  white-space: nowrap;
}

.board-card__subject {
  margin: 0;
  font-size: var(--wf-text-sm);
  line-height: var(--wf-line-tight);
}

.board-card[data-unread="true"] .board-card__subject::before {
  width: 7px;
  height: 7px;
  display: inline-block;
  margin-right: var(--wf-space-2);
  border-radius: 999px;
  background: #238636;
  content: "";
}

.board-card__preview {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
  line-height: var(--wf-line);
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.board-card__meta {
  min-height: 18px;
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-2xs);
}

.board-card__meta .wf-icon {
  width: 14px;
  height: 14px;
}

.board-card__meta-spacer {
  flex: 1;
}

.board-card__sla {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-1);
  padding-top: var(--wf-space-1);
}

.board-card__sla-label {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--wf-space-2);
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-2xs);
}

.board-card__sla-label strong {
  color: var(--wf-gray-700);
  white-space: nowrap;
}

.board-card__sla-track {
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--wf-gray-200);
}

.board-card__sla-track span {
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--wf-gray-500);
}

.board-card__sla[data-sla-state="approaching"] .board-card__sla-track span {
  background: var(--wf-gray-700);
}

.board-card__sla[data-sla-state="expired"] .board-card__sla-track span {
  background: var(--wf-gray-900);
}

.board-add-column {
  width: 304px;
  min-height: 112px;
  display: flex;
  flex: 0 0 304px;
  align-items: center;
  justify-content: center;
  gap: var(--wf-space-2);
  border: 1px dashed var(--wf-border-strong);
  border-radius: var(--wf-radius-4);
  background: transparent;
  color: var(--wf-gray-700);
  font: inherit;
  font-size: var(--wf-text-sm);
  font-weight: 700;
  cursor: pointer;
}

.board-add-column:hover {
  background: var(--wf-gray-100);
}

.board-add-column .wf-icon {
  width: 17px;
  height: 17px;
}

.board-status {
  position: absolute;
  z-index: 45;
  right: var(--wf-space-4);
  bottom: var(--wf-space-4);
  max-width: min(440px, calc(100% - var(--wf-space-8)));
  margin: 0;
  background: var(--wf-surface);
  box-shadow: var(--wf-shadow-2);
}

/* Card detail panel */

.board-detail {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-4);
}

.board-detail__actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: var(--wf-space-1);
}

.board-detail__title {
  margin: 0;
  font-size: var(--wf-text-xl);
  line-height: var(--wf-line-tight);
}

.board-detail__body {
  display: flex;
  flex-direction: column;
  overflow: auto;
}

.board-detail__empty {
  margin: 0;
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-sm);
}

.board-detail__message {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-3);
  padding-bottom: var(--wf-space-4);
  border-bottom: 1px solid var(--wf-border);
}

.board-detail__from {
  margin: 0;
  font-size: var(--wf-text-sm);
  line-height: var(--wf-line);
}

.board-detail__add-contact {
  align-self: flex-start;
}

.board-detail__recipient {
  margin: 0;
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
}

.board-detail__disclosure {
  border-bottom: 1px solid var(--wf-border);
}

.board-detail__disclosure > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--wf-space-3);
  padding: var(--wf-space-4) 0;
  font-size: var(--wf-text-sm);
  font-weight: 700;
  list-style: none;
  cursor: pointer;
}

.board-detail__disclosure > summary::-webkit-details-marker {
  display: none;
}

.board-detail__summary-end {
  display: inline-flex;
  align-items: center;
  gap: var(--wf-space-2);
  color: var(--wf-text-subtle);
  font-weight: 400;
}

.board-detail__summary-end .wf-icon {
  width: 15px;
  height: 15px;
  transition: transform var(--wf-motion-fast) var(--wf-motion-ease);
}

.board-detail__disclosure[open] .board-detail__summary-end .wf-icon {
  transform: rotate(180deg);
}

.board-detail__summary-meta {
  font-size: var(--wf-text-xs);
}

.board-detail__summary-count {
  min-width: 22px;
  justify-content: center;
  padding-inline: 6px;
}

.board-detail__disclosure-body {
  padding-bottom: var(--wf-space-4);
}

.board-detail__checklist,
.board-detail__activity {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.board-detail__checklist label {
  display: flex;
  align-items: flex-start;
  gap: var(--wf-space-2);
  font-size: var(--wf-text-sm);
}

.board-detail__activity li {
  padding-left: var(--wf-space-3);
  border-left: 2px solid var(--wf-gray-300);
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
}

.board-detail__thread {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-3);
}

.board-thread-message {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-3);
  padding: var(--wf-space-3);
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius-3);
  background: var(--wf-white);
}

.board-thread-message[data-own="true"] {
  border-color: var(--wf-border-strong);
  background: var(--wf-gray-50);
}

.board-thread-message__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--wf-space-3);
  font-size: var(--wf-text-xs);
}

.board-thread-message__head div,
.board-thread-message__body,
.board-thread-message__attachments {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-1);
}

.board-thread-message__head span,
.board-thread-message__head time {
  color: var(--wf-text-subtle);
}

.board-thread-message__body p,
.board-thread-message__body ul,
.board-thread-message__html h4 {
  margin: 0;
}

.board-thread-message__body {
  font-size: var(--wf-text-sm);
  line-height: var(--wf-line);
}

.board-thread-message__html {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-2);
  padding: var(--wf-space-3);
  border-radius: var(--wf-radius-2);
  background: var(--wf-gray-100);
}

.board-thread-message__html h4 {
  font-size: var(--wf-text-sm);
}

.board-thread-message__html ul {
  padding-left: var(--wf-space-5);
}

.board-thread-attachment {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--wf-space-2);
  padding: var(--wf-space-2) var(--wf-space-3);
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius-2);
  background: var(--wf-surface);
  color: var(--wf-text);
  font: inherit;
  font-size: var(--wf-text-xs);
  text-align: left;
  cursor: pointer;
}

.board-thread-attachment:hover {
  background: var(--wf-gray-100);
}

.board-thread-attachment .wf-icon {
  width: 15px;
  height: 15px;
}

/* The narrow panel keeps reply intentionally compact. Expanded card detail
   exposes the addressing and attachment fields without changing the draft. */
.board-reply {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: var(--wf-space-3);
  padding: var(--wf-space-4) 0;
  border-bottom: 1px solid var(--wf-border);
}

.board-reply__heading,
.board-reply__footer,
.board-reply__attachment-row {
  display: flex;
  align-items: center;
  gap: var(--wf-space-2);
}

.board-reply__heading,
.board-reply__footer {
  justify-content: space-between;
}

.board-reply__heading h3,
.board-reply__heading p {
  margin: 0;
}

.board-reply__heading h3 {
  font-size: var(--wf-text-sm);
}

.board-reply__heading p,
.board-reply__account {
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
}

.board-reply__account {
  font-weight: 600;
}

.board-reply__body {
  resize: vertical;
}

.board-reply--compact .board-reply__body {
  min-height: 84px;
}

.board-reply--compact .board-reply__footer {
  align-items: flex-end;
}

.board-detail__thread + .board-reply--compact {
  margin-top: var(--wf-space-4);
  padding: var(--wf-space-4) 0 0;
  border-top: 1px solid var(--wf-border);
  border-bottom: 0;
}

.board-reply--full {
  margin-top: var(--wf-space-4);
  padding: var(--wf-space-5);
  border: 1px solid var(--wf-border-strong);
  border-radius: var(--wf-radius-4);
  background: var(--wf-gray-50);
}

.board-reply__fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--wf-space-3);
}

.board-reply__field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--wf-space-2);
}

.board-reply__recipient-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--wf-space-1);
}

.board-reply__recipient-actions .wf-button {
  min-height: auto;
  padding: 0;
  font-size: var(--wf-text-xs);
}

.board-reply__optional-recipient {
  grid-column: span 1;
}

.board-reply__subject {
  grid-column: 1 / -1;
}

.board-reply__attachment-row {
  min-width: 0;
}

.board-reply__attachment {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--wf-space-2);
  overflow: hidden;
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board-reply__attachment .wf-icon {
  width: 15px;
  height: 15px;
}

.board-card-dialog {
  width: min(760px, calc(100vw - var(--wf-space-6)));
}

.board-card-dialog .wf-dialog__header h2 {
  margin: 0;
  font-size: var(--wf-text-xl);
}

.board-card-dialog__body {
  max-height: min(74vh, 760px);
  display: flex;
  flex-direction: column;
  overflow: auto;
}

.board-contact-dialog {
  width: min(480px, calc(100vw - var(--wf-space-6)));
}

.board-contact-dialog__body {
  display: grid;
  gap: var(--wf-space-4);
}

/* Column settings */

.board-column-dialog {
  width: min(680px, calc(100vw - var(--wf-space-6)));
}

.board-column-dialog[data-dialog-view="automation"] {
  width: min(1100px, calc(100vw - var(--wf-space-6)));
}

.board-column-dialog > .wf-dialog__header {
  min-height: 56px;
  padding: var(--wf-space-3) var(--wf-space-5);
}

.board-column-dialog > .wf-dialog__header h2 {
  margin: 0;
  font-size: var(--wf-text-xl);
  line-height: var(--wf-line-tight);
}

.board-column-dialog__title-group {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--wf-space-2);
}

.board-column-dialog__title-group h2 {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

[data-board-column-form][hidden],
.board-automation-dialog[hidden] {
  display: none;
}

.board-column-dialog__body {
  max-height: min(68vh, 660px);
  overflow: auto;
}

.board-automation-dialog__body {
  max-height: min(78vh, 780px);
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-5);
  overflow: auto;
  padding: var(--wf-space-5);
}

.automation-dialog-form .automation-preview {
  top: 0;
}

.board-settings-section {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-3);
  margin: 0;
  padding: var(--wf-space-4) 0 0;
  border: 0;
  border-top: 1px solid var(--wf-border);
}

.board-sla__fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(160px, .65fr);
  gap: var(--wf-space-3);
  margin-bottom: var(--wf-space-2);
}

.board-sla__fields[hidden] {
  display: none;
}

.board-settings-section__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--wf-space-3);
}

.board-settings-section h3,
.board-settings-section legend,
.board-settings-section__head p {
  margin: 0;
}

.board-settings-section h3,
.board-settings-section legend {
  font-size: var(--wf-text-sm);
  font-weight: 700;
}

.board-settings-section__head p {
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
}

.board-task-template {
  display: flex;
  flex-direction: column;
  gap: var(--wf-space-2);
}

.board-task-template__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--wf-space-2);
}

.board-settings-empty {
  margin: 0;
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
}

.board-automations {
  gap: var(--wf-space-2);
  margin-top: var(--wf-space-3);
  padding-top: var(--wf-space-5);
}

.board-automation-list {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius-3);
}

.board-automation-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: var(--wf-space-3);
  padding: var(--wf-space-3);
  background: var(--wf-gray-50);
}

.board-automation-row + .board-automation-row {
  border-top: 1px solid var(--wf-border);
}

.board-automation-row > div,
.board-automation-row strong,
.board-automation-row small {
  display: block;
}

.board-automation-row strong {
  font-size: var(--wf-text-xs);
}

.board-automation-row small {
  margin-top: var(--wf-space-1);
  color: var(--wf-text-subtle);
  font-size: var(--wf-text-xs);
  line-height: var(--wf-line);
}

.board-automations [aria-disabled="true"] {
  opacity: .5;
  pointer-events: none;
}

.board-column-dialog__footer,
.board-column-dialog__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--wf-space-2);
}

.board-column-dialog__actions {
  margin-left: auto;
}

.board-remove-dialog {
  width: min(520px, calc(100vw - var(--wf-space-6)));
}

@media (max-width: 759.98px) {
  [data-board-detail-expand],
  [data-board-reply-expand] {
    display: none;
  }

  .board-reply--compact .board-reply__footer {
    justify-content: flex-end;
  }

  .board-toolbar {
    gap: var(--wf-space-2);
    padding-inline: var(--wf-space-3);
  }

  .board-search {
    width: min(230px, 66vw);
  }

  .board-toolbar__hint {
    display: none;
  }

  .board-columns {
    padding: var(--wf-space-3);
  }

  .board-column,
  .board-add-column {
    width: 280px;
    flex-basis: 280px;
  }

  .board-column-dialog__footer {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .board-column-dialog__actions,
  .board-column-dialog__actions .wf-button,
  .board-column-dialog__footer > .wf-button {
    width: 100%;
  }

  .board-reply__fields {
    grid-template-columns: 1fr;
  }

  .board-reply__optional-recipient,
  .board-sla__fields {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .board-automation-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .board-automation-row > .wf-button {
    grid-column: 1 / -1;
    justify-self: flex-start;
  }

  .board-reply__subject {
    grid-column: auto;
  }

  .board-column-dialog > .wf-dialog__header {
    padding-inline: var(--wf-space-4);
  }

  .board-automation-dialog__body {
    padding: var(--wf-space-4);
  }

  .board-reply--full {
    padding: var(--wf-space-4);
  }

  .board-reply--full .board-reply__footer {
    align-items: stretch;
    flex-direction: column;
  }

  .board-reply--full .board-reply__footer > .wf-button {
    width: 100%;
  }
}