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button{cursor:pointer;width:30px;height:26px;color:var(--text-muted);transition:transform var(--duration-press) var(--ease-spring), background-color var(--duration-hover) ease-out, color var(--duration-hover) ease-out;background:0 0;border:0;border-radius:7px;place-items:center;display:grid}.theme-switch button:active{transform:scale(.92)}.theme-switch button[aria-pressed=true]{background:var(--bg-card-elevated);color:var(--text-primary);box-shadow:var(--shadow-subtle)}.topbar-right{align-items:center;gap:10px;display:flex}@media (max-width:480px){.brand-name{display:none}.topbar-right{gap:6px}.theme-switch button{width:28px}}