.btn{justify-content:center;align-items:center;gap:var(--space-2);border-radius:var(--radius-md);font-family:inherit;font-weight:var(--font-weight-semibold);cursor:pointer;white-space:nowrap;-webkit-user-select:none;user-select:none;transition:background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);border:1.5px solid #0000;text-decoration:none;display:inline-flex}.btn:focus-visible{box-shadow:var(--shadow-focus);outline:none}.btn:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}.btn:not(:disabled):active{transform:scale(.98)}.btn-sm{padding:0 var(--space-4);font-size:var(--font-size-sm);min-width:64px;height:36px}.btn-md{padding:0 var(--space-5);font-size:var(--font-size-sm);min-width:80px;height:44px}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary);letter-spacing:-.01em}.btn-primary:not(:disabled):hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border-color:var(--color-border-strong)}.btn-secondary:not(:disabled):hover{background:var(--color-surface-alt);border-color:var(--color-text)}.btn-ghost{color:var(--color-text-muted);background:0 0;border-color:#0000}.btn-ghost:not(:disabled):hover{background:var(--color-surface-alt);color:var(--color-text)}.btn-danger{background:var(--color-surface);color:var(--color-danger-600);border-color:var(--color-border)}.btn-danger:not(:disabled):hover{background:var(--color-danger-50);border-color:var(--color-danger-500);color:var(--color-danger-700)}.btn-loading{pointer-events:none;opacity:.6}