/* UI2 button primitives — visual foundation only. */

.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ui-space-2, 8px);
  min-height: 40px;
  padding: 0 var(--ui-space-4, 16px);
  border: 1px solid transparent;
  border-radius: var(--ui-radius-sm, 10px);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, box-shadow .15s ease, color .15s ease;
}

.ui-btn:focus-visible {
  outline: 2px solid var(--ui-primary, #3b82f6);
  outline-offset: 2px;
}

.ui-btn:disabled,
.ui-btn[aria-disabled="true"] {
  opacity: .55;
  cursor: not-allowed;
  pointer-events: none;
}

.ui-btn--primary {
  color: #fff;
  background: var(--ui-primary, #3b82f6);
  border-color: var(--ui-primary, #3b82f6);
  box-shadow: 0 4px 12px rgba(37, 99, 235, .16);
}

.ui-btn--primary:hover {
  background: var(--ui-primary-hover, #2563eb);
  border-color: var(--ui-primary-hover, #2563eb);
}

.ui-btn--secondary {
  color: var(--ui-text, #172033);
  background: var(--ui-surface, #fff);
  border-color: var(--ui-border, #dfe5ee);
}

.ui-btn--secondary:hover {
  background: var(--ui-surface-2, #eef2f7);
}

.ui-btn--ghost {
  color: var(--ui-text, #172033);
  background: transparent;
  border-color: transparent;
}

.ui-btn--ghost:hover {
  background: var(--ui-surface-2, #eef2f7);
}

.ui-btn--danger {
  color: #b42318;
  background: #fff;
  border-color: #f0b7b2;
}

.ui-btn--danger:hover {
  background: #fff4f2;
}

.ui-btn--sm {
  min-height: 34px;
  padding-inline: 12px;
  font-size: 13px;
}

.ui-btn--lg {
  min-height: 46px;
  padding-inline: 20px;
}