/* D3. The #root aliases win over legacy area restyles until those areas migrate.
   Explicit .button components also work outside the app root (for example portals).
   Reply previews are content rows; the List/Board control stays DS3.1's segment. */
.button,
#root :is(.button, .primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button, .new-conversation-button, .icon-button, .am-icon-button, .um-icon-button):where(:not(.tk-reply-expand, .tk-view-toggle button)),
.composer-tool {
  --button-gap: 6px;
}
.button,
#root :is(.button, .primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button, .new-conversation-button, .icon-button, .am-icon-button, .um-icon-button):where(:not(.tk-reply-expand, .tk-view-toggle button)) {
  --button-height: 36px;
  --button-padding: 14px;
  --button-font-size: var(--text-ui);
  --button-icon: 16px;
  --button-line: 1;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--button-height);
  min-height: var(--button-height);
  padding: 0 var(--button-padding);
  gap: var(--button-gap);
  border: 1px solid var(--color-control-border);
  border-radius: var(--radius-small);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: var(--button-font-size);
  font-weight: var(--weight-semibold);
  line-height: var(--button-line);
  text-align: center;
  text-box: trim-both cap alphabetic;
  white-space: nowrap;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
}
/* A native file-picker label is still a field label, not a focusable button. */
#root label:is(.primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button) {
  font-size: var(--text-ui);
  font-weight: var(--weight-medium);
  line-height: var(--line-ui);
}
.button-sm,
#root .button-sm,
#root :where(.tk-actions.small, .tk-reply-row, .row-verb, table) :is(.primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button):where(:not(.tk-reply-expand, .tk-view-toggle button)) {
  --button-height: 28px;
  --button-padding: 10px;
  --button-font-size: var(--text-meta);
  --button-gap: 4px;
  --button-icon: 16px;
}
.button-lg,
#root .button-lg,
#root :is([role="dialog"], .setup-page, .sorting-screen) :is(.primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button),
#root:has(.setup-masthead) :is(.primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button) {
  --button-height: 44px;
  --button-padding: 18px;
  --button-font-size: var(--text-body);
  --button-gap: 8px;
  --button-icon: 20px;
}
.button :is(span, strong, small, b):not([data-ds-icon], .ui-icon, [data-ds]),
#root :is(.primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button, .new-conversation-button):where(:not(.tk-reply-expand, .tk-view-toggle button)) :is(span, strong, small, b):not([data-ds-icon], .ui-icon, [data-ds]) {
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}
.button :is(svg, img, [data-ds-icon]),
#root :is(.primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button, .new-conversation-button, .icon-button, .am-icon-button, .um-icon-button):where(:not(.tk-reply-expand, .tk-view-toggle button)) :is(svg, img, [data-ds-icon]) {
  flex: none;
  width: var(--button-icon);
  height: var(--button-icon);
  vertical-align: middle;
}
.button-primary,
#root :is(.button-primary, .primary-button, .new-conversation-button),
#root :where(.overview-needs .need-kind-decisions) .compact-button {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-primary-text);
}
.button-primary:hover,
#root :is(.button-primary, .primary-button, .new-conversation-button):hover,
#root :where(.overview-needs .need-kind-decisions) .compact-button:hover {
  border-color: var(--color-primary-hover);
  background: var(--color-primary-hover);
  color: var(--color-primary-hover-text);
}
.button-secondary,
#root :is(.button-secondary, .secondary-button:where(:not(.overview-needs .need-kind-decisions .compact-button))) {
  border-color: var(--color-control-border);
  background: var(--color-surface);
  color: var(--color-text);
}
.button-secondary:hover,
#root :is(.button-secondary, .secondary-button:where(:not(.overview-needs .need-kind-decisions .compact-button))):hover {
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
}
/* Selected toggles and portrait buttons retain the shared control geometry. */
.button-selected, #root .button-selected,
.button-selected:hover, #root .button-selected:hover {
  border-color: var(--color-selected-border);
  background: var(--color-selected-surface);
  color: var(--color-text);
}
.button > [data-ds-avatar], #root .button > [data-ds-avatar] {
  width: var(--space-6);
  height: var(--space-6);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.button [data-ds-avatar] > img, #root .button [data-ds-avatar] > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.button-ghost,
#root :is(.button-ghost, .text-button:where(:not(.tk-reply-expand)), .icon-button:where(:not(.button)), .am-icon-button, .um-icon-button) {
  border-color: var(--color-transparent);
  background: var(--color-transparent);
  color: var(--color-accent-text);
}
.button-ghost:hover,
#root :is(.button-ghost, .text-button:where(:not(.tk-reply-expand)), .icon-button:where(:not(.button)), .am-icon-button, .um-icon-button):hover {
  background: var(--color-surface-raised);
}
.button-danger,
#root :is(.button-danger, .danger-button) {
  border-color: var(--color-alert);
  background: var(--color-alert);
  color: var(--color-primary-text);
}
.button-danger-quiet,
#root :is(.button-danger-quiet, .stop-button) {
  border-color: var(--color-control-border);
  background: var(--color-surface);
  color: var(--color-alert);
}
.button-danger-quiet:hover,
#root :is(.button-danger-quiet, .stop-button):hover {
  border-color: var(--color-alert);
  background: var(--color-surface);
}
.button.icon-button,
#root :is(.icon-button, .am-icon-button, .um-icon-button) {
  width: var(--button-height);
  min-width: var(--button-height);
  padding: 0;
  flex: none;
  font-size: var(--button-icon);
  text-box: normal;
}
.button:focus-visible,
.row-button:focus-visible,
#root :is(.button, .primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button, .new-conversation-button, .icon-button, .am-icon-button, .um-icon-button):focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}
.button:is(:disabled, [aria-disabled="true"]),
#root :is(.button, .primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button, .new-conversation-button, .icon-button, .am-icon-button, .um-icon-button):is(:disabled, [aria-disabled="true"]) {
  border-color: var(--color-disabled-surface);
  background: var(--color-disabled-surface);
  color: var(--color-disabled-text);
  opacity: 1;
  cursor: not-allowed;
}
.button[aria-busy="true"] { cursor: progress; }
.row-button {
  display: block;
  box-sizing: border-box;
  width: 100%;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  text-align: left;
  text-decoration: none;
  white-space: normal;
  cursor: pointer;
}
.row-button:hover { background: var(--color-surface-hover); }
.row-button-container {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-right: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}
.row-button-primary {
  position: static;
  flex: 1;
  min-width: 0;
  width: auto;
  border: 0;
  background: var(--color-transparent);
}
.row-button-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}
.row-button-actions { position: relative; z-index: 1; }
.row-button:disabled {
  background: var(--color-disabled-surface);
  color: var(--color-disabled-text);
  cursor: not-allowed;
}
/* The legacy tabs retain their roles; DS3.1 owns the component/keyboard migration. */
#root :is(.section-nav:not(.section-nav-vertical), .agent-tabs, .inbox-tabs, .tk-state-tabs) :is(button, a) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  height: 40px;
  min-height: 40px;
  padding: 0 12px;
  gap: 6px;
  border: 0;
  background: var(--color-transparent);
  color: var(--color-text-muted);
  font-size: var(--text-ui);
  font-weight: var(--weight-medium);
  line-height: var(--line-ui);
  text-box: trim-both cap alphabetic;
  text-decoration: none;
  white-space: nowrap;
}
#root :is(.section-nav:not(.section-nav-vertical), .agent-tabs, .inbox-tabs, .tk-state-tabs) :is(button, a):is(.active, [aria-selected="true"], [aria-current="page"]) {
  color: var(--color-text);
  font-weight: var(--weight-semibold);
  box-shadow: var(--shadow-tab-active);
}
@media (pointer: coarse) {
  .button,
  #root :is(.button, .primary-button, .secondary-button, .danger-button, .stop-button, .text-button, .compact-button, .new-conversation-button, .icon-button, .am-icon-button, .um-icon-button):not(.tk-reply-expand):not(.tk-view-toggle button) { min-height: 44px; }
  .button.icon-button,
  #root :is(.icon-button, .am-icon-button, .um-icon-button) { min-width: 44px; }
  #root .conversation-header-actions .compact-button { width: 44px; padding: 0; }
  #root :is(.section-nav:not(.section-nav-vertical), .agent-tabs, .inbox-tabs, .tk-state-tabs) :is(button, a) { height: 44px; min-height: 44px; }
}