/* --- UI Polish & Fixes --- */

/* 1. Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: #4b5563;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: #6b7280;
}

/* 2. Header Layout Fixes */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.app-notice {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.search-controls {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
}

.workspace-search {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  min-width: 0;
  padding: 0.4rem 0.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.workspace-search-input {
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  width: 220px;
  min-width: 120px;
  font: inherit;
}

.workspace-search-input::-webkit-search-cancel-button {
  appearance: none;
}

.workspace-search-clear {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 0.2rem;
  min-height: 0;
}

.workspace-search-clear:hover {
  color: var(--text-primary);
  background: transparent;
}

/* 3. Filter Dropdown */
.filter-bar {
  position: relative;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.filter-btn.has-filters {
  background: var(--task-color-blue);
  color: var(--text-primary);
  border-color: transparent;
}

[data-theme="dark"] .filter-btn.has-filters {
  color: #fff;
}

.filter-badge {
  background: rgba(0, 0, 0, 0.2);
  color: inherit;
  font-size: 0.75rem;
  padding: 0 0.4rem;
  border-radius: 999px;
  font-weight: 600;
}

.filter-dropdown {
  position: absolute;
  top: 110%;
  right: 0;
  width: 280px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow);
  z-index: 100;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.filter-section {
  border-bottom: 1px solid var(--border-color);
}

.filter-section:last-child {
  border-bottom: none;
}

.filter-section-title {
  padding: 0.6rem 1rem 0.2rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.filter-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.9rem;
  background: var(--bg-secondary);
}

.filter-list {
  max-height: 180px;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.filter-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.filter-item:hover {
  background: var(--bg-secondary);
}

.filter-item input[type="checkbox"] {
  flex-shrink: 0;
}

.tag-text {
  font-size: 0.9rem;
}

.priority-filter-pill {
  min-width: 1.5rem;
  text-align: center;
}

.empty-filters {
  padding: 1rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.btn-text-sm {
  background: none;
  border: none;
  font-size: 0.8rem;
  color: var(--task-color-blue);
  cursor: pointer;
  padding: 0;
}

[data-theme="dark"] .btn-text-sm {
  color: #60a5fa;
}

.btn-text-sm:hover {
  text-decoration: underline;
}

/* 4. Subtask UI Improvements */
/* Override default input styles to match description text */
.subtask-input {
  background: transparent;
  border: 1px solid transparent;
  /* Transparent border to prevent jump on focus */
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.5rem;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.subtask-input:focus {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

.subtask-input.completed {
  color: var(--text-secondary);
  text-decoration: line-through;
}

/* --- Modal Column Field --- */
.required-marker {
  color: #dc2626;
  margin-left: 0.15rem;
}

.form-error {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: #dc2626;
}

.column-combobox {
  position: relative;
}

.column-combobox-input {
  width: 100%;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  outline: none;
}

.column-combobox-input:focus {
  border-color: var(--task-color-blue);
  background: var(--bg-primary);
}

.column-combobox-menu {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 0.35rem);
  max-height: 220px;
  overflow-y: auto;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  box-shadow: var(--card-shadow);
  z-index: 65;
}

.column-combobox-item {
  padding: 0.5rem 0.65rem;
  font-size: 0.86rem;
  cursor: pointer;
}

.column-combobox-item:hover,
.column-combobox-item.active {
  background: var(--bg-tertiary);
}

.column-combobox-item.is-create {
  color: #2563eb;
  font-weight: 600;
}

[data-theme="dark"] .column-combobox-item.is-create {
  color: #93c5fd;
}

.column-combobox-empty {
  padding: 0.6rem 0.7rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- Calendar Checkboxes --- */
.cal-task-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.task-checkbox,
.cal-task-checkbox,
.matrix-task-checkbox,
.filter-item input[type="checkbox"],
.subtask-checkbox {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  min-width: 16px;
  margin: 0;
  border-radius: var(--checkbox-radius);
  border: 1px solid var(--checkbox-border);
  background: var(--checkbox-bg);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.task-checkbox::before,
.cal-task-checkbox::before,
.matrix-task-checkbox::before,
.filter-item input[type="checkbox"]::before,
.subtask-checkbox::before {
  content: '';
  width: 4px;
  height: 8px;
  border-right: 2px solid var(--checkbox-check);
  border-bottom: 2px solid var(--checkbox-check);
  transform: rotate(45deg) scale(0.75);
  opacity: 0;
  margin-top: -1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.task-checkbox:hover,
.cal-task-checkbox:hover,
.matrix-task-checkbox:hover,
.filter-item input[type="checkbox"]:hover,
.subtask-checkbox:hover {
  border-color: var(--checkbox-checked-border);
}

.task-checkbox:checked,
.cal-task-checkbox:checked,
.matrix-task-checkbox:checked,
.filter-item input[type="checkbox"]:checked,
.subtask-checkbox:checked {
  background: var(--checkbox-checked-bg);
  border-color: var(--checkbox-checked-border);
}

.task-checkbox:checked::before,
.cal-task-checkbox:checked::before,
.matrix-task-checkbox:checked::before,
.filter-item input[type="checkbox"]:checked::before,
.subtask-checkbox:checked::before {
  opacity: 1;
  transform: rotate(45deg) scale(1);
}

.task-checkbox:focus-visible,
.cal-task-checkbox:focus-visible,
.matrix-task-checkbox:focus-visible,
.filter-item input[type="checkbox"]:focus-visible,
.subtask-checkbox:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--checkbox-focus-ring);
}

.task-checkbox:disabled,
.cal-task-checkbox:disabled,
.matrix-task-checkbox:disabled,
.filter-item input[type="checkbox"]:disabled,
.subtask-checkbox:disabled {
  opacity: 0.5;
  cursor: default;
}

.task-checkbox,
.matrix-task-checkbox {
  margin-top: 2px;
}

.cal-task-checkbox {
  width: 14px;
  height: 14px;
  min-width: 14px;
  border-radius: 5px;
  flex-shrink: 0;
}

.modal-checkbox {
  width: 20px;
  height: 20px;
  min-width: 20px;
  border-radius: 8px;
}

.subtask-checkbox {
  flex-shrink: 0;
}

.pill-title {
  display: block;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- Matrix Checkboxes and Add Buttons --- */
.quadrant-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.matrix-add-btn {
  min-width: 28px;
  min-height: 28px;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-secondary);
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.matrix-add-btn:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.matrix-task-row {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.matrix-task-checkbox {
  margin-top: 2px;
  flex-shrink: 0;
}

/* --- Phase 1 Accessibility + Feedback --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-notice {
  padding: 0.75rem;
  text-align: center;
  font-weight: 600;
  border-bottom: 1px solid transparent;
}

.app-notice-warning {
  background: #fee2e2;
  color: #b91c1c;
  border-bottom-color: #ef4444;
}

[data-theme="dark"] .app-notice-warning {
  background: #7f1d1d;
  color: #fecaca;
  border-bottom-color: #ef4444;
}

.view-toggle {
  display: inline-flex;
  gap: 0.2rem;
  margin-left: 1rem;
  padding: 0.2rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: color-mix(in srgb, var(--surface-elevated) 82%, transparent);
  box-shadow: var(--card-shadow);
}

.segmented-control button {
  border: none;
  min-height: 0;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.segmented-control button:hover {
  color: var(--text-primary);
  background: color-mix(in srgb, var(--bg-tertiary) 66%, transparent);
}

.segmented-control button.active {
  background: var(--bg-primary);
  color: var(--text-primary);
  box-shadow: var(--card-shadow);
}

.header-icon-group {
  display: flex;
  gap: 0.5rem;
  margin-right: 1rem;
}

.delete-btn {
  color: #ef4444;
}

.empty-workspace-state {
  text-align: center;
  margin-top: 5rem;
  color: var(--text-secondary);
}

.empty-state-text {
  color: var(--text-secondary);
  text-align: center;
  font-style: italic;
}

.ws-current-btn {
  border: none;
  background: transparent;
  font: inherit;
}

.ws-item-btn {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  font: inherit;
  color: inherit;
  padding: 0.75rem 1rem;
  border-radius: 0;
}

.ws-item-btn.active {
  font-weight: 700;
}

.ws-action-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  min-height: 0;
  padding: 0.2rem;
}

.ws-action-btn:hover {
  color: var(--text-primary);
  background: transparent;
}

.ws-actions .app-icon {
  width: 0.95rem;
  height: 0.95rem;
}

.ws-create {
  width: 100%;
  border: none;
}

.column-title-btn {
  border: none;
  background: transparent;
  font: inherit;
  text-align: left;
  padding: 0;
}

.column-menu-trigger {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 0.25rem;
  line-height: 1;
}

.column-quick-add-trigger {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 0.25rem;
  line-height: 1;
  min-height: 0;
}

.column-menu-trigger:hover {
  color: var(--text-primary);
  background: transparent;
}

.column-quick-add-trigger:hover {
  color: var(--text-primary);
  background: transparent;
}

.menu-item {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: inherit;
}

.quick-add-btn {
  border: none;
  background: transparent;
  width: 100%;
  justify-content: flex-start;
  font: inherit;
}

.completed-toggle {
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font: inherit;
}

.task-open-btn {
  border: none;
  background: transparent;
  color: inherit;
  text-align: left;
  width: 100%;
  padding: 0;
  min-height: 0;
}

.task-open-btn:hover {
  background: transparent;
}

.cal-task-pill {
  width: auto;
  max-width: 62%;
  text-align: left;
  border: none;
  border-left: 3px solid transparent;
}

.app-dialog-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.52);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1200;
}

@media (max-width: 1023px) {
  .workspace-search-input {
    width: 150px;
  }
}

@media (max-width: 768px) {
  .header-actions {
    gap: 0.35rem;
  }

  .search-controls {
    max-width: 46vw;
  }

  .workspace-search-input {
    width: 100px;
    min-width: 70px;
  }

}

.app-dialog-panel {
  width: min(440px, calc(100vw - 2rem));
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  box-shadow: var(--card-shadow-hover);
}

.app-dialog-title {
  margin: 0;
}

.app-dialog-message {
  margin: 0.65rem 0 0;
  color: var(--text-secondary);
}

.app-dialog-input-group {
  margin-top: 0.9rem;
}

.app-dialog-input {
  box-sizing: border-box;
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.app-dialog-error {
  margin-top: 0.65rem;
  color: #dc2626;
  font-size: 0.85rem;
}

.app-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
}

.btn-danger {
  background: #dc2626;
  color: #fff;
}

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

.app-toast-stack {
  position: fixed;
  top: 1rem;
  right: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1250;
  width: min(320px, calc(100vw - 2rem));
}

.app-toast {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  box-shadow: var(--card-shadow);
  padding: 0.65rem 0.75rem;
}

.app-toast-success {
  border-color: #22c55e;
}

.app-toast-error {
  border-color: #ef4444;
}

.app-toast-warning {
  border-color: #f59e0b;
}

.app-toast-info {
  border-color: #3b82f6;
}

.app-toast-message {
  font-size: 0.88rem;
}

.app-toast-dismiss {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  min-height: 0;
  padding: 0;
}

.app-toast-dismiss:hover {
  color: var(--text-primary);
  background: transparent;
}

.app-toast-dismiss .app-icon {
  width: 0.9rem;
  height: 0.9rem;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="menuitem"]:focus-visible,
[role="button"]:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

[data-theme="dark"] button:focus-visible,
[data-theme="dark"] input:focus-visible,
[data-theme="dark"] select:focus-visible,
[data-theme="dark"] textarea:focus-visible,
[data-theme="dark"] [role="menuitem"]:focus-visible,
[data-theme="dark"] [role="button"]:focus-visible {
  outline-color: #93c5fd;
}

/* 5. Date Badge Improvements */
.meta-item.due-date {
  background: var(--bg-tertiary);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.meta-item.due-date.overdue {
  background: #fee2e2;
  color: #b91c1c;
}

[data-theme="dark"] .meta-item.due-date.overdue {
  background: #7f1d1d;
  color: #fecaca;
}