.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border:1px solid var(--border);border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);cursor:pointer;transition:color .2s,background .2s,border-color .2s}.theme-toggle:hover{color:var(--text-primary);background:var(--bg-card);border-color:var(--border-light)}