.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);border-radius:10px;font-weight:700;transition:background-color .15s,border-color .15s,color .15s,box-shadow .15s;border:1px solid transparent;font-family:var(--font-body)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-sm{padding:var(--space-2) var(--space-3);font-size:.875rem}.btn-md{padding:0 var(--space-5);height:46px;font-size:.95rem}.btn-lg{padding:0 var(--space-6);height:56px;font-size:1.05rem}.btn-full{width:100%}.btn-primary{background:var(--primary);color:var(--primary-foreground);border-color:var(--primary)}.btn-primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover)}.btn-secondary{background:var(--surface);color:var(--primary);border-color:var(--primary)}.btn-secondary:hover:not(:disabled){background:var(--brand-green-bg);border-color:var(--primary-hover)}.btn-danger{background:var(--danger);color:var(--primary-foreground)}.btn-danger:hover:not(:disabled){background:var(--danger-fg)}.btn-ghost{background:transparent;color:var(--muted);border-radius:var(--radius-md);font-weight:700}.btn-ghost:hover:not(:disabled){background:var(--surface-muted);color:var(--foreground)}.spinner{width:1rem;height:1rem;border-radius:50%;border:2px solid;border-right:2px solid transparent;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}