/*
  MFP Design System — Buttons
  Production CSS for buttons component.
  Import tokens.css before this file.
*/

/* ======================================================================
   BUTTONS — 2025
   ====================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  height: 44px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  font: var(--type-button-label);
  letter-spacing: 0.25px;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  position: relative;
  outline: none;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: transparent;
  pointer-events: none;
  transition: background 150ms;
}

.btn:hover::after,
.btn.is-hover::after          { background: rgba(0, 19, 73, 0.08); }
.btn:active::after            { background: rgba(0, 19, 73, 0.16); }
.btn.is-hover                 { pointer-events: none; }
.btn--ghost--expand::after    { background: rgba(0, 19, 73, 0.08); }

.btn__icon {
  font-size: 24px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  flex-shrink: 0;
  font-variation-settings: 'FILL' 0;
  color: inherit;
}

.btn--icon-only { gap: 0; }

.btn--icon-only[data-tooltip] { position: relative; }
.btn--icon-only[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-darkest-grey);
  color: var(--color-white);
  font: var(--type-body-small);
  white-space: nowrap;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms;
  z-index: 10;
}
.btn--icon-only[data-tooltip]:hover::before { opacity: 1; }

.btn--sm { font: var(--type-button-label-sm); height: 32px; padding: 4px 8px; gap: var(--space-4); }
.btn--sm .btn__icon { font-size: 20px; width: 20px; height: 20px; }

.btn--primary     { background: var(--color-action);        color: var(--color-white); }
.btn--secondary   { background: transparent; color: var(--color-action); border: 1.5px solid var(--color-action); }
.btn--ghost       { background: transparent; color: var(--color-darkest-grey); }
.btn--destructive { background: var(--color-danger);        color: var(--color-white); }

.btn.is-disabled {
  background: var(--color-medium-grey) !important;
  color: var(--color-dark-grey) !important;
  border: none !important;
  cursor: not-allowed;
  pointer-events: none;
}
.btn.is-disabled::after { display: none; }

.btn-demo-row {
  display: flex;
  gap: var(--space-32);
  align-items: flex-end;
  padding: 40px 32px;
  background: var(--color-white);
  flex-wrap: wrap;
}

.btn-demo-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}