/* ==========================================================
   _buttons.css — Sistema de botões
   Compartilhado por todas as páginas da plataforma.
   ========================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  padding: 8px 16px;
  font: inherit;
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--t), border-color var(--t), box-shadow var(--t), opacity var(--t);
}

.btn:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.btn:disabled,
.btn[data-loading] {
  opacity: .55;
  cursor: not-allowed;
}

/* Variantes */
.btn-primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}
.btn-primary:not(:disabled):not([data-loading]):hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
}
.btn-primary:not(:disabled):not([data-loading]):active {
  background: var(--brand-darker);
}

.btn-out {
  background: transparent;
  color: var(--brand);
  border-color: var(--brand-border);
}
.btn-out:not(:disabled):hover {
  background: var(--brand-soft);
  border-color: var(--brand);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--line-dark);
}
.btn-ghost:not(:disabled):hover {
  background: var(--bg);
  color: var(--text);
  border-color: var(--line-dark);
}

.btn-selected {
  background: var(--brand-soft);
  color: var(--brand);
  border-color: var(--brand);
}

.btn-full { width: 100%; }

/* Spinner de loading */
.btn-spinner {
  display: none;
  width: 15px;
  height: 15px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .65s linear infinite;
  flex-shrink: 0;
}
.btn[data-loading] .btn-spinner { display: block; }

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

button.btn-sm {
    padding: 0.25em 0.5em;
}