/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 40px;
  padding: 0 var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background 0.15s var(--ease),
    border-color 0.15s var(--ease),
    color 0.15s var(--ease),
    opacity 0.15s var(--ease);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.btn.is-loading,
.btn[aria-busy="true"] {
  opacity: 0.88;
  cursor: wait;
  pointer-events: none;
}

.btn.is-loading::before {
  content: "";
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  border: 2px solid color-mix(in srgb, currentColor 35%, transparent);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: btn-spin 0.7s linear infinite;
}

@keyframes btn-spin {
  to {
    transform: rotate(360deg);
  }
}

.btn:focus-visible,
.chip:focus-visible,
.nav-toggle:focus-visible,
.search-toggle:focus-visible,
.link-clear:focus-visible {
  outline: var(--focus);
  outline-offset: 2px;
}

.btn-machine {
  background: var(--machine);
  color: var(--machine-ink);
  border-color: var(--machine-deep);
}

.btn-machine:hover {
  background: var(--machine-hot);
}

.btn-machine:active {
  background: var(--machine-deep);
}

.btn-cta {
  background: var(--ink);
  color: var(--machine);
  border-color: #000;
}

.btn-cta:hover {
  background: #000;
  color: var(--machine-hot);
}

.btn-cta:active {
  background: #111;
  color: var(--machine);
}

.btn-dark {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.btn-dark:hover {
  background: var(--ink-soft);
}

.btn-dark:active {
  background: #000;
}

.btn-ghost {
  background: var(--raised);
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  border-color: var(--ink);
  background: var(--surface);
}

.btn-ghost:active {
  background: var(--surface-2);
}


.btn-sm {
  min-height: 32px;
  padding: 0 12px;
  font-size: 12px;
}

.btn-lg {
  min-height: 48px;
  padding: 0 var(--space-3);
  font-size: 14px;
}

.btn-block {
  width: 100%;
  text-align: center;
}