#board-app {
  --board-list-width: 280px;
  --board-label-urgent: var(--color-error);
  --board-label-urgent-bg: #fee2e2;
  --board-label-important: var(--color-primary);
  --board-label-important-bg: var(--color-primary-light);
  --board-label-waiting: #b45309;
  --board-label-waiting-bg: #fef3c7;
  --board-label-reference: #6d28d9;
  --board-label-reference-bg: #ede9fe;
  --board-label-done: var(--color-success);
  --board-label-done-bg: #d1fae5;
  position: relative;
  min-width: 0;
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.5;
}

#board-app h2,
#board-app h3,
#board-app p,
#board-app ul {
  margin: 0;
}

#board-app ul {
  padding: 0;
  list-style: none;
}

#board-app button,
#board-app input,
#board-app select,
#board-app textarea {
  font-family: inherit;
}

#board-app [hidden] {
  display: none !important;
}

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

.board-app {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

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

.board-toolbar__row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-2);
}

.board-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
}

.board-heading h2 {
  margin: 0;
  font-size: var(--text-2xl);
  line-height: 1.3;
  word-break: break-word;
}

.board-field,
.board-search {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
  font-size: var(--text-sm);
  font-weight: 600;
}

.board-search {
  flex: 1 1 14rem;
}

.board-field select,
.board-input,
.board-search input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 400;
  line-height: 1.5;
}

.board-field select:focus,
.board-input:focus,
.board-search input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.board-textarea {
  min-height: 7rem;
  resize: vertical;
}

.board-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.board-filter,
.board-label {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  line-height: 1.2;
}

.board-filter {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
}

.board-label {
  padding: 0.15rem 0.5rem;
}

.board-filter--urgent,
.board-label--urgent {
  color: var(--board-label-urgent);
  background: var(--board-label-urgent-bg);
  border-color: transparent;
}

.board-filter--important,
.board-label--important {
  color: var(--board-label-important);
  background: var(--board-label-important-bg);
  border-color: transparent;
}

.board-filter--waiting,
.board-label--waiting {
  color: var(--board-label-waiting);
  background: var(--board-label-waiting-bg);
  border-color: transparent;
}

.board-filter--reference,
.board-label--reference {
  color: var(--board-label-reference);
  background: var(--board-label-reference-bg);
  border-color: transparent;
}

.board-filter--done,
.board-label--done {
  color: var(--board-label-done);
  background: var(--board-label-done-bg);
  border-color: transparent;
}

.board-filter[aria-pressed="true"] {
  color: #fff;
}

.board-filter--urgent[aria-pressed="true"] {
  background: var(--board-label-urgent);
}

.board-filter--important[aria-pressed="true"] {
  background: var(--board-label-important);
}

.board-filter--waiting[aria-pressed="true"] {
  background: var(--board-label-waiting);
}

.board-filter--reference[aria-pressed="true"] {
  background: var(--board-label-reference);
}

.board-filter--done[aria-pressed="true"] {
  background: var(--board-label-done);
}

.board-status,
.board-muted {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.board-notice {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
}

.board-notice p {
  font-size: var(--text-sm);
}

.board-canvas {
  min-width: 0;
  overflow-x: auto;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-alt);
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.board-lists {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  width: max-content;
  min-width: 100%;
  min-height: 12rem;
}

.board-list,
.board-list-add {
  flex: 0 0 var(--board-list-width);
  width: var(--board-list-width);
  min-width: var(--board-list-width);
}

.board-list {
  display: flex;
  flex-direction: column;
  max-height: max(20rem, calc(100vh - 14rem));
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.board-list__header {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border-light);
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.board-list__title-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.board-list__title-row h3 {
  flex: 1;
  min-width: 0;
  font-size: var(--text-base);
  line-height: 1.4;
  word-break: break-word;
}

.board-list__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.board-list__cards {
  flex: 1 1 auto;
  min-height: 2.5rem;
  overflow-y: auto;
  padding: var(--space-2);
  overscroll-behavior: contain;
}

.board-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.board-card:hover {
  border-color: var(--color-primary);
}

.board-card--overdue {
  border-color: #fecaca;
  box-shadow: inset 3px 0 0 var(--color-error);
}

.board-card__top,
.board-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}

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

.board-card__labels {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  gap: var(--space-1);
  min-width: 0;
}

.board-card__title {
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.4;
}

.board-card__open {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  font-weight: 700;
  text-align: left;
  word-break: break-word;
  cursor: pointer;
}

.board-card__due {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.board-card__due--today {
  color: var(--color-warning);
  font-weight: 700;
}

.board-card__due--overdue {
  color: var(--color-error);
  font-weight: 700;
}

.board-card__due-flag {
  margin-left: var(--space-1);
}

.board-progress {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
}

.board-progress--complete {
  color: var(--color-success);
}

.board-progress__track {
  display: inline-block;
  width: 2.5rem;
  height: 0.3rem;
  overflow: hidden;
  border-radius: var(--radius-full);
  background: var(--color-bg-subtle);
}

.board-progress__bar {
  display: block;
  height: 100%;
  background: var(--color-secondary);
}

.board-progress--complete .board-progress__bar {
  background: var(--color-success);
}

.board-empty {
  padding: var(--space-3) var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.board-composer {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
}

.board-list-add {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.55);
}

.board-list-add h3 {
  margin: 0;
  font-size: var(--text-base);
}

.board-mini {
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
}

.board-mini:hover {
  background: var(--color-bg-subtle);
}

.board-mini:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.board-mini--danger {
  color: var(--color-error);
  border-color: #fecaca;
}

.board-btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-3);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--color-error);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
  cursor: pointer;
}

.board-btn-danger:hover {
  background: #b91c1c;
}

.board-dialog {
  width: min(36rem, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 0;
  border: none;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-lg);
}

.board-dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
}

.board-dialog__panel {
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 2rem);
}

.board-dialog__header,
.board-dialog__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-4);
}

.board-dialog__header {
  border-bottom: 1px solid var(--color-border);
}

.board-dialog__header h2,
.board-dialog__header h3 {
  font-size: var(--text-lg);
}

.board-dialog__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-4);
  overflow: auto;
}

.board-dialog__footer {
  border-top: 1px solid var(--color-border);
}

.board-dialog__footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-left: auto;
}

.board-form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
}

.board-fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.board-fieldset legend {
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
}

.board-label-options,
.board-check-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.board-check,
.board-check-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-weight: 500;
}

.board-check input,
.board-check-item input {
  margin-top: 0.2rem;
}

.board-check-item {
  justify-content: space-between;
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-light);
}

.board-check-item label {
  display: flex;
  flex: 1;
  gap: var(--space-2);
  min-width: 0;
  word-break: break-word;
}

.board-check-add {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.board-check-add .board-input {
  flex: 1 1 12rem;
}

.board-field-error {
  color: var(--color-error);
  font-size: var(--text-sm);
  font-weight: 600;
}

.board-popover {
  position: absolute;
  z-index: 30;
  visibility: hidden;
  width: 14rem;
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  box-shadow: var(--shadow-md);
}

.board-popover.is-placed {
  visibility: visible;
}

.board-popover p {
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
}

.board-popover button {
  display: block;
  width: 100%;
  margin-top: var(--space-1);
  padding: var(--space-2);
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text);
  font-size: var(--text-sm);
  text-align: left;
  cursor: pointer;
}

.board-popover button:hover,
.board-popover button:focus-visible {
  background: var(--color-bg-subtle);
}

.board-popover__current {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.board-drop-indicator {
  position: absolute;
  z-index: 40;
  display: block;
  pointer-events: none;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.board-ghost {
  position: absolute;
  z-index: 50;
  max-height: 70vh;
  margin: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.94;
  box-shadow: var(--shadow-lg);
}

#board-app .is-dragging {
  display: none;
}

#board-app.is-pointer-drag,
#board-app.is-pointer-drag * {
  cursor: grabbing !important;
}

#board-app.is-pointer-drag {
  user-select: none;
}

#board-app :focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (max-width: 767px) {
  #board-app .board-canvas {
    overflow-x: auto;
  }

  #board-app .board-list,
  #board-app .board-list-add {
    flex: 0 0 280px;
    width: 280px;
    min-width: 280px;
  }

  #board-app .board-heading h2 {
    font-size: var(--text-xl);
  }

  #board-app .board-field,
  #board-app .board-search {
    flex: 1 1 100%;
  }
}