.btn{font-weight:var(--fw-medium);transition:all var(--dur-fast) var(--ease-out);border-radius:var(--radius-md);justify-content:center;align-items:center;gap:8px;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--primary);color:var(--primary-on)}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover)}.btn-secondary{background-color:var(--bg-surface);color:var(--fg1);border:1px solid var(--border-default)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-subtle)}.btn-outline{color:var(--fg1);border:1px solid var(--border-default);background-color:#0000}.btn-outline:hover:not(:disabled){background-color:var(--bg-subtle)}.btn-ghost{color:var(--fg1);background-color:#0000}.btn-ghost:hover:not(:disabled){background-color:var(--bg-subtle)}.btn-sm{font-size:var(--fs-sm);padding:6px 12px}.btn-md{font-size:var(--fs-sm);padding:8px 16px}.btn-lg{font-size:var(--fs-base);padding:12px 24px}.btn-icon{justify-content:center;align-items:center;display:flex}